CN105177788A - Polyester cord yarn, preparation method of polyester cord yarn, and application of prepared polyester cord yarn in diagonal tires - Google Patents
Polyester cord yarn, preparation method of polyester cord yarn, and application of prepared polyester cord yarn in diagonal tires Download PDFInfo
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- CN105177788A CN105177788A CN201510683244.9A CN201510683244A CN105177788A CN 105177788 A CN105177788 A CN 105177788A CN 201510683244 A CN201510683244 A CN 201510683244A CN 105177788 A CN105177788 A CN 105177788A
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Abstract
The invention provides a preparation method for polyester cord yarn. The preparation method is characterized by comprising the following steps: (1) spinning process flow; (2) impregnation process flow. The preparation method can effectively improve the breaking strength and the breaking elongation of the conventional polyester cord yarn, thereby improving the impact resistance of the polyester cord yarn. The invention further provides the polyester cord yarn prepared by adopting the method; the breaking strength of the polyester cord yarn is greater than or equal to 6.5 cN/dtex, the breaking elongation rate reaches 19-25%, the breaking work is far higher than that of the conventional polyester cord yarn, and the dimensional stability (DSI) is greatly improved compared with that of nylon cord yarn. The invention further provides application of the prepared polyester cord yarn in diagonal tires.
Description
Technical field
The invention belongs to tire manufacturing techniques field, especially relate to a kind of terylene tyre cord, its preparation method and the application in cross-ply thereof.
Background technology
At present, in tire, the synthetic fiber that use as carcass reinforcing material more, wherein uses the most extensive with terylene, nylon, artificial silk and aramid fiber; And in the cross-plies such as motorcycle, bicycle, all-terrain vehicle and agricultural vehicle, carcass reinforcing material is substantially based on nylon curtain line, the using area of its reason mainly motorcycle, bicycle and agricultural vehicle etc. is that road conditions are poor mostly, be main mainly with country road, hill path etc., require that tire has good shock resistance.But the shortcomings such as easily water suction, in advance shrinkage factor are high, poor dimensional stability that nylon curtain line exists, and nylon strengthens the defect that flat spot easily appears in tire.Terylene tyre cord has the features such as water absorption rate is low, good stability of the dimension, is therefore used for the carcass material of meridian tyres for passenger cars.
Nylon curtain line is in effect---the good impact resistance of the oblique vehicle tyres such as motorcycle, bicycle, all-terrain vehicle and agricultural vehicle, impact resistance can be weighed with the energy of rupture of tire, find through research, linear approximate relationship is there is, as shown in Figure 1 between the work to break of nylon 6 cord fabric thread and the energy of rupture of tire.The work to break computational methods of cord fabric thread, as shown in Figure 2.When the work to break of cord fabric thread increases, the energy of rupture making tire with this cord fabric thread also increases, and the impact resistance of tire strengthens, and the work to break therefore by improving cord fabric thread improves tire impact resistance.The work to break of cord fabric thread calculates by formula (1):
W＝∫F*dL…………………………………………………………(1)
W-work to break, J;
F-ultimate strength, N;
Elongation under the effect of L-ultimate strength, m.
As can be seen here, the ultimate strength of cord fabric thread is higher longer with the elongation under ultimate strength effect, and the work to break of cord fabric thread is larger.
The intensity of cord fabric thread is the business of ultimate strength divided by the nominal fiber number of cord fabric thread of cord fabric thread, calculates by formula (2):
UTS＝BS/LD……………………………………………………………(2)
The intensity of UTS-cord fabric thread, cN/dtex;
The ultimate strength of BS-cord fabric thread, N;
The nominal fiber number of LD-cord fabric thread, dtex.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of terylene tyre cord, this preparation method can improve ultimate strength and the elongation at break of conventional polyester cord fabric thread effectively, thus improves the impact resistance of terylene tyre cord; Present invention also offers the terylene tyre cord adopting this preparation method to obtain, this terylene tyre cord not only remains the advantage of conventional polyester cord fabric thread, and its work to break and fatigue performance also tool improve a lot; The present invention still further provides the application of this terylene tyre cord in cross-ply, has given full play to the advantage of terylene tyre cord, and the advantage of good impact resistance in conjunction with nylon curtain line, keep away its shortcoming.
The technical solution used in the present invention is:
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, obtains precursor;
Its technological parameter is: spinning speed: 4800-5200mpm; Annealer temperature: 230-365 DEG C; Draw ratio: 1.95-2.23 and inherent viscosity: 0.98-1.06g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord.
The preparation method of terylene tyre cord of the present invention, wherein, the gum dipping process flow process described in step (2), its technological parameter is: first district's baking temperature 160 DEG C and dry tension force 520-700g; Draft temperature 230 DEG C and tensile stress 1150-1300g, second district's baking temperature 160 DEG C and dry tension force 520-700g, setting temperature 230 DEG C and sizing tension force 110 ~ 250g.
Present invention also offers a kind of terylene tyre cord adopting above-mentioned preparation method to obtain.
Fracture strength >=the 6.5cN/dtex of the described terylene tyre cord that the present invention obtains, elongation at break reaches 19 ~ 25%.
The present invention still further provides the obtained application of described terylene tyre cord in cross-ply.
Beneficial effect of the present invention:
The preparation method of terylene tyre cord of the present invention, can improve ultimate strength and the extension at break of conventional polyester cord fabric thread effectively, thus improves the impact resistance of terylene tyre cord.
The described terylene tyre cord that the present invention obtains, except remaining the advantage of conventional polyester cord fabric thread, as good stability of the dimension, outside the low and price of water absorption rate is low, its work to break and fatigue performance tool improve a lot, fracture strength >=the 6.5cN/dtex of described terylene tyre cord, elongation at break reaches 19 ~ 25%, employing precursor fiber number is work to break difference >=3.5J (specification is 1000DX2) and >=4.7J (specification is 1300DX2) of the terylene tyre cord that 1000 DENIER and 1300 DENIER obtain, its work to break respectively far above adopt identical fiber number obtain conventional polyester cord fabric thread 2.7J (specification is 1000DX2) and 3.9J (specification is 1300DX2), its DIMENSIONAL STABILITY (DSI) is compared with the DIMENSIONAL STABILITY (DSI) of nylon curtain line, tool improves a lot, precursor fiber number is that the DIMENSIONAL STABILITY (DSI) of the nylon curtain line of 1260 DENIER and 840 DENIER reaches 15% (specification is 1260DX2) and 16.4% (specification is 840DX2) respectively, employing precursor fiber number is that the DSI of the terylene tyre cord of the present invention that 1000 DENIER and 1300 DENIER obtain then is less than 11% (specification is 1300DX2) and 9.5% (specification is 1000DX2) respectively, can compare favourably with nylon curtain line.In addition, the described terylene tyre cord that the present invention obtains, its processing curing temperature can improve more than 10 DEG C, the cure time of at least minimizing 25% on the curing temperature of original nylon 6 cord fabric thread, and rear inflation operation can realize the dimensionally stable of tire; Can greatly improve the flat spot defect of nylon curtain line tire, simultaneously the resistance to rolling of its tire reduces 7% than nylon curtain line tire, and the riding and handling test result of its tire is also better than nylon curtain line tire; Under the cross-ply apparatus for production line not increasing the enhancing of existing nylon curtain line and condition production technology not being done to large adjustment, industrialization can be realized and produces.
The application of described terylene tyre cord in cross-ply that the present invention obtains, in the cross-plies such as motorcycle, bicycle, all-terrain vehicle and agricultural vehicle, give full play to the advantage of terylene tyre cord, in conjunction with the advantage of the good impact resistance of nylon curtain line, keep away its shortcoming.
Accompanying drawing explanation
Fig. 1 is the work to break of nylon 6 cord fabric thread and the graph of a relation of tire energy of rupture in prior art;
Fig. 2 is that the work to break of cord fabric thread in prior art calculates schematic diagram;
In Fig. 3,1 is the stress strain curve figure of conventional polyester cord fabric thread (specification is 1000DX2); The stress strain curve figure of 2 terylene tyre cords obtained for embodiment 8 (specification is 1000DX2); 3 is the stress strain curve figure of nylon66 fiber cord fabric thread (specification is 840DX2); 4 is the stress strain curve figure of nylon 6 cord fabric thread (specification is 840DX2);
In Fig. 4,1 is the stress strain curve figure of conventional polyester cord fabric thread (specification is 1300DX2); 2 is the stress strain curve figure of nylon 6 cord fabric thread (specification is 1260DX2); 3 is the stress strain curve figure of nylon66 fiber cord fabric thread (specification is 1260DX2); The stress strain curve figure of 4 terylene tyre cords obtained for embodiment 3 (specification is 1300DX2);
In Fig. 5,1 is the compression endurance test result figure of the terylene tyre cord (specification is 1300DX2) that embodiment 3 obtains; 2 is the compression endurance test result figure of nylon 6 cord fabric thread (specification is 1260DX2); 3 is the compression endurance test result figure of conventional polyester cord fabric thread (specification is 1300DX2);
In Fig. 6,1 is powder x-ray diffraction (XRD) figure of conventional polyester cord fabric thread; Powder x-ray diffraction (XRD) figure of 2 terylene tyre cords obtained for embodiment 8;
Fig. 7 is the terylene tyre cord that obtains of embodiment 8 and nylon 6 cord fabric thread (specification is 1260DX2) bias tire performance comparison figure before and after the examination of road.
Below in conjunction with specific embodiments and the drawings, the invention will be further described.
Detailed description of the invention
The physical property of cord fabric thread in the terylene tyre cord and comparative example 1-4 obtained according to embodiment 1-10 is measured by method below:
1) according to standard A STM-D885, draw speed: 254mm/min, clamp distance: 254mm; Adopt universal material puller system Instron3367, fixture: 2714-006, measure brute force, intensity, elongation at break and the continuous rating elongation rate (EASL) of precursor and cord fabric thread.
2) according to the method for testing of shrinkage factor in standard A STM-D4974: 177 DEG C, 2min, 0.05g/D; The shrinkage tester Mk6 that testing equipment adopts Testrite company to produce, records the shrinkage factor of precursor and cord fabric thread.
3) X ' PertPRO Multi-functional X ray diffractometer is adopted, divergent slit 1/2 °; Antiscatter slits 5mm; Easel mask 15mm; Receiver X ' Celerator; Sweep limits 2 θ=5-60 °; Sweep speed 0.196603 °/Sec; Scanning step 0.0167113Sec; Specimen holder adopts the specimen holder in patent ZL201220475618.X, records the XRD figure of cord fabric thread.
4) conventional disk endurance (DISC) method of testing is adopted: the rubber strip making 76mm (length) X12.7 (wide) mmX11.2mm (height) in temperature 168 DEG C and pressure 11 tons of sulfurations for 15 minutes, the disc fatigue tester produced in B.F.Goodrich company runs 24 hours with 2500 revs/min, records the conventional fatigue durability of cord fabric thread.
5) disk endurance (DISC) method of testing of compression is adopted: the rubber strip making 76mm (length) X12.7 (wide) mmX11.2mm (height) in temperature 168 DEG C and pressure 11 tons of sulfurations for 15 minutes, the disc fatigue tester produced in B.F.Goodrich company runs more than 7 hours with 2000 revs/min, records the compression fatigue durability of cord fabric thread.
6) DIMENSIONAL STABILITY (DSI) is the summation of continuous rating elongation rate (EASL) and the shrinkage factor recorded by said method.
Raw material sources used in the present embodiment 1-10 and comparative example 1-4 are as follows:
Specification is respectively the nylon66 fiber cord fabric thread of 840DX2 and 1260DX2, originates from China Shenma Group Co., Ltd; Specification is respectively nylon 6 cord fabric thread of 840DX2 and 1260DX2, originates from Jiangsu Co., Ltd of courser group; The conventional polyester cord fabric that specification is respectively 1000DX2 and 1300DX2 is our company's self-control, adopts self-produced polyester industrial yarn (DSP) as the raw material of the terylene tyre cord of synthesis the present embodiment 1-10.
Embodiment 1
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 4800mpm; Annealer temperature: 335 DEG C; Draw ratio: 2.13 and inherent viscosity: 1.06g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 700g in the firstth district; Draft temperature 230 DEG C and tensile stress 1300g, second district's baking temperature 160 DEG C and the dry tension force 700g in the secondth district, setting temperature 230 DEG C and sizing tension force 180g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 2
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, obtains precursor; , obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 4800mpm; Annealer temperature: 260 DEG C; Draw ratio: 2.08 and inherent viscosity: 1.02g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 700g in the firstth district; Draft temperature 230 DEG C and tensile stress 1300g, second district's baking temperature 160 DEG C and the dry tension force 700g in the secondth district, setting temperature 230 DEG C and sizing tension force 250g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 3
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 4800mpm; Annealer temperature: 230 DEG C; Draw ratio: 2.09 and inherent viscosity: 1.00g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 700g in the firstth district; Draft temperature 230 DEG C and tensile stress 1300g, second district's baking temperature 160 DEG C and the dry tension force 700g in the secondth district, setting temperature 230 DEG C and sizing tension force 140g.
As shown in Figure 4, the terylene tyre cord (specification is 1300DX2) that the present embodiment obtains, brute force is 201N, and elongation at break is 22.5%, and work to break is 5.17J.
Fig. 5 is the stress strain curve figure of terylene tyre cord, conventional polyester cord fabric thread (specification is 1300DX2) and nylon 6 cord fabric thread (specification is 1260DX2) that the present embodiment adopting the DISC method of testing of compression to record obtains, as shown in Figure 5, the compression fatigue performance of the present embodiment terylene tyre cord is obviously better than conventional polyester cord fabric thread, and can compare favourably with the compression fatigue performance of nylon 6 cord fabric thread; The endurance test result of the terylene tyre cord that the present embodiment that the DISC method of testing that table 3 is employing routine records obtains, as shown in Table 3, the fatigue performance of terylene tyre cord that the present embodiment obtains obviously is better than nylon 6 cord fabric thread that conventional polyester cord fabric thread that specification is 1300DX2 and specification are 1260DX2.
Other performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 4
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 5000mpm; Annealer temperature: 365 DEG C; Draw ratio: 1.95 and inherent viscosity: 1.04g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 700g in the firstth district; Draft temperature 230 DEG C and tensile stress 1300g, second district's baking temperature 160 DEG C and the dry tension force 700g in the secondth district, setting temperature 230 DEG C and sizing tension force 110g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 5
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 5200mpm; Annealer temperature: 280 DEG C; Draw ratio: 2.09 and inherent viscosity: 1.02g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 520g in the firstth district; Draft temperature 230 DEG C and tensile stress 1150g, second district's baking temperature 160 DEG C and the dry tension force 520g in the secondth district, setting temperature 230 DEG C and sizing tension force 110g.
Embodiment 6
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 4900mpm; Annealer temperature: 340 DEG C; Draw ratio: 2.23 and inherent viscosity: 1.04g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 520g in the firstth district; Draft temperature 230 DEG C and tensile stress 1150g, second district's baking temperature 160 DEG C and the dry tension force 520g in the secondth district, setting temperature 230 DEG C and sizing tension force 200g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 7
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 5000mpm; Annealer temperature: 360 DEG C; Draw ratio: 1.98 and inherent viscosity: 1.06g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 520g in the firstth district; Draft temperature 230 DEG C and tensile stress 1150g, second district's baking temperature 160 DEG C and the dry tension force 520g in the secondth district, setting temperature 230 DEG C and sizing tension force 160g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 8
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 5000mpm; Annealer temperature: 360 DEG C; Draw ratio: 2.08 and inherent viscosity: 1.04g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and the dry tension force 520g in the firstth district; Draft temperature 230 DEG C and tensile stress 1150g, second district's baking temperature 160 DEG C and the dry tension force 520g in the secondth district, setting temperature 230 DEG C and sizing tension force 140g.
As shown in Figure 3, the terylene tyre cord (specification is 1000DX2) that the present embodiment obtains, brute force is 155N, and elongation at break is 21.0%, and work to break is 3.94J.
As shown in Figure 6, the XRD of the terylene tyre cord (specification is 1000DX2) of the present embodiment figure compares with conventional polyester cord fabric thread (specification is 1000DX2), and to be the size in 73%, three faces be respectively for the degree of crystallinity of the terylene tyre cord of the present embodiment
with
and the size that the degree of crystallinity of conventional polyester cord fabric thread (specification is 1000DX2) is 75%, three faces is respectively
with
therefore the terylene tyre cord (specification is 1000DX2) of the present embodiment has lower degree of crystallinity and larger crystalline size, thus under the superiority condition playing conventional polyester cord fabric thread, improve intensity and the elongation at break of this terylene tyre cord, thus improve the riding of cross-ply and handling.
As shown in Figure 7, the test result display of the motorcycle tyre adopting the present embodiment terylene tyre cord to make bias tire cord fabric thread before and after road examination 24000Km, the performance of the present embodiment terylene tyre cord is better than the performance of nylon 6 cord fabric thread 1260DX2, and have passed the road examination test of 40000Km, as shown in table 5.
Adopt the tire 2.75-184PR that the present embodiment terylene tyre cord is made, 45P, respectively at 172 DEG C, saturated vapour pressure 0.93Mpa, inner saturated vapour pressure 1.35Mpa, cure time 11 minutes and 185 DEG C, saturated vapour pressure 0.93Mpa, inner saturated vapour pressure 1.35Mpa, sulfuration processing under the cure time condition of 8 minutes, pass through Tire testing, result is as shown in table 4, and in table, data show, curing temperature improves 13 DEG C, cure time shortens 27%, does not significantly affect the performance of tire.
Other performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 9
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 5000mpm; Annealer temperature: 305 DEG C; Draw ratio: 2.09 and inherent viscosity: 0.98g/dl.
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and dry tension force 520g; Draft temperature 230 DEG C and tensile stress 1150g, second district's baking temperature 160 DEG C and dry tension force 520g, setting temperature 230 DEG C and sizing tension force 250g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Embodiment 10
A preparation method for terylene tyre cord, comprises the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, and obtain precursor, the performance of described precursor is as shown in table 1;
Its technological parameter is: spinning speed: 5100mpm; Annealer temperature: 330 DEG C; Draw ratio: 2.04 and inherent viscosity: 1.00g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord, described terylene tyre cord performance is as shown in table 2;
Its technological parameter is: first district's baking temperature 160 DEG C and dry tension force 520g; Draft temperature 230 DEG C and tensile stress 1150g, second district's baking temperature 160 DEG C and dry tension force 520g, setting temperature 230 DEG C and sizing tension force 220g.
The performance of the precursor that the present embodiment obtains and terylene tyre cord respectively as shown in Table 1 and Table 2.
Comparative example 1
Adopt above-mentioned drawing process, the precursor fiber number that the method for testing of shrinkage factor records is that the performance of the nylon 6 (specification is 1260DX2) of 1260 DENIER is as shown in table 2.
Comparative example 2
Adopt above-mentioned drawing process, the precursor fiber number that the method for testing of shrinkage factor records is that the performance of the conventional polyester cord fabric thread (specification is 1300DX2) of 1300 DENIER is as shown in table 2.
Comparative example 3
Adopt above-mentioned drawing process, the precursor fiber number that the method for testing of shrinkage factor records is that the performance of the nylon 6 (specification is 840DX2) of 840 DENIER is as shown in table 2.
Comparative example 4
Adopt above-mentioned drawing process, the precursor fiber number that the method for testing of shrinkage factor records is that the performance of the conventional polyester cord fabric thread (specification is 1000DX2) of 1000 DENIER is as shown in table 2.
Table 1 precursor performance table
Table 2 cord fabric thread performance table
From table 1 and table 2, fracture strength >=the 6.5cN/dtex of the terylene tyre cord that the present embodiment 1-10 obtains, elongation at break reaches 19 ~ 25%, adopt precursor fiber number to be work to break difference >=3.5J (specification is 1000DX2) and >=4.7J (specification is 1300DX2) of the terylene tyre cord that 1000 DENIER and 1300 DENIER obtain, its work to break respectively far above the identical fiber number of employing obtain conventional polyester cord fabric thread 2.7J (specification is 1000DX2) and 3.9J (specification is 1300DX2); Its DIMENSIONAL STABILITY (DSI) is compared with the DIMENSIONAL STABILITY (DSI) of nylon curtain line, tool improves a lot, precursor fiber number is that the DIMENSIONAL STABILITY (DSI) of the nylon curtain line of 1260 DENIER and 840 DENIER reaches 15% (specification is 1260DX2) and 16.4% (specification is 840DX2) respectively, employing precursor fiber number is that the DSI of the terylene tyre cord of the present invention that 1000 DENIER and 1300 DENIER obtain then is less than 11% (specification is 1300DX2) and 9.5% (specification is 1000DX2) respectively, can compare favourably with nylon curtain line.
Table 3 conventional DISC endurance test result
The tyre performance table of terylene tyre cord under different conditions of vulcanization of table 4 embodiment 8
Riding and the handling test result of table 5 tire
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (5)
1. a preparation method for terylene tyre cord, is characterized in that: comprise the following steps:
(1) spinning technique flow process: distributing pipe-spinning manifold-filament spinning component-annealer-ring quenching-oil section-drying-Screw Extrusion-melt-drawing-off-winding, obtains precursor;
Its technological parameter is: spinning speed: 4800-5200mpm; Annealer temperature: 230-365 DEG C; Draw ratio: 1.95-2.23 and inherent viscosity: 0.98-1.06g/dl;
(2) gum dipping process flow process: to lead out-front storage cloth holder-first bath impregnation dipping-aspirate first the-the first district dry--two-bath gum dipping dipping-secondary that stretches aspirates-the second district's drying-sizing-breaking cutter-store up afterwards cloth holder-batch; Obtain terylene tyre cord.
2. the preparation method of terylene tyre cord according to claim 1, is characterized in that: the gum dipping process flow process described in step (2), and its technological parameter is: first district's baking temperature 160 DEG C and dry tension force 520-700g; Draft temperature 230 DEG C and tensile stress 1150-1300g, second district's baking temperature 160 DEG C and dry tension force 520-700g, setting temperature 230 DEG C and sizing tension force 110 ~ 250g.
3. adopt the terylene tyre cord that the preparation method of the terylene tyre cord described in claim 1 or 2 obtains.
4. the described terylene tyre cord obtained according to claim 3, is characterized in that: the fracture strength >=6.5cN/dtex of described terylene tyre cord, elongation at break reaches 19 ~ 25%.
5. the application of terylene tyre cord described in claim 3 or 4 in cross-ply.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106192121A (en) * | 2016-09-27 | 2016-12-07 | 联新（开平）高性能纤维有限公司 | High intensity high-dimensional stability polyester cord warp thread and its preparation method and application |
| CN107574670A (en) * | 2017-09-13 | 2018-01-12 | 联新（开平）高性能纤维有限公司 | Cord fabric warp thread dipping solution and the cord fabric warp thread prepared and preparation method and application |
| JP2019525859A (en) * | 2016-07-01 | 2019-09-12 | コルドサ・テクニク・テクスティル・アノニム・シルケティＫｏｒｄｓａ Ｔｅｋｎｉｋ Ｔｅｋｓｔｉｌ Ａｎｏｎｉｍ Ｓｉｒｋｅｔｉ | New bi-elastic polyester tire cord as cap ply |
| CN112281272A (en) * | 2020-10-15 | 2021-01-29 | 联新（开平）高性能纤维有限公司 | Polyester cord fabric warp with ultrahigh strength and dimensional stability as well as preparation method and application thereof |
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