CN103937236A - High-temperature-resistant graphite-nylon gasket material and preparation method thereof - Google Patents
High-temperature-resistant graphite-nylon gasket material and preparation method thereof Download PDFInfo
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- CN103937236A CN103937236A CN201410199065.3A CN201410199065A CN103937236A CN 103937236 A CN103937236 A CN 103937236A CN 201410199065 A CN201410199065 A CN 201410199065A CN 103937236 A CN103937236 A CN 103937236A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a high-temperature-resistant graphite-nylon gasket material which is prepared from the following components in parts by weight: 50-60 parts of nylon 66, 10-15 parts of graphite, 8-10 parts of polytetrafluoroethylene, 1.5-3 parts of diamine, 0.5-2 parts of maleic anhydride grafted polyphenylether, 0.15-0.17 part of carbon fiber, 5-8 parts of aluminium bronze powder, 1.2-1.3 parts of methyl p-hydroxybenzoate, 1.5-2.5 parts of flame-retardant red phosphorus, 4-6 parts of activator, 3-5 parts of coupling agent, 5-8 parts of flame retardant and 0.8-1.2 parts of temperature-resistant antiaging agent. The nylon 66 used as the raw material enhances the comprehensive mechanical properties of the material; the polytetrafluoroethylene enhances the weather resistance and wear resistance; the graphite can enhance the weather resistance and perform a self-lubricating function; the diamine is utilized to modify the graphite, thereby enhancing the interface interaction between the graphite oxide and nylon and obviously enhancing the high temperature resistance; and the production technique is simple and has the advantages of stable quality and no environmental pollution.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to a kind of high temperature resistant graphite nylon washer material and preparation method thereof.
Background technology
Packing ring is two mechanical seals between object, because machining surface can not be perfect, uses packing ring can fill up its irregularity.Packing ring is normally made up of flaky material, as rubber, metal, cork, felt, glass fibre or plastic polymer etc.Along with scientific and technological development, packing ring is more and more extensive, meanwhile, also more and more higher to the performance requriements of packing ring for the application on electron device, such as shockproof, waterproof, ventilative, corrosion-resistant, weather-resistant, resistance to elevated temperatures.
Nylon is a kind of common engineering plastics, is widely used in the fields such as electric, household electrical appliance, mechanotronics, car electrics.At present, useful nylon 66 filled glass fibers, nylon 66 filled polytetrafluoroethylenes, nylon 66 are filled the packing ring of carbon fibre, but above-mentioned materials can not have the premium properties of each component simultaneously, over-all properties is bad, exist mechanical property bad, tensile strength, ultimate compression strength are not high, the problem that resilience is poor, wear-resisting, high thermal resistance is poor.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide one to there is rub resistance, weather-resistant, self-lubricating, high anti-tensile, resistance to elevated temperatures graphite nylon washer material and preparation method thereof simultaneously.
The present invention adopts following technical scheme to achieve these goals:
A kind of high temperature resistant graphite nylon washer material, is made up of the component of following weight part: nylon 6650-60 part, graphite 10-15 part, tetrafluoroethylene 8-10 part, diamine 1.5-3 part, maleic anhydride graft polyphenylene oxide 0.5-2 part, carbon fibre 0.15-0.17 part, xantal powder 5-8 part, nipagin esters 1.2-1.3 part, fire-retardant red phosphorus 1.5-2.5 part, activator 4-6 part, coupling agent 3-5 part, fire retardant 5-8 part, heatproof antiaging agent 0.8-1.2 part.
Described diamine is one or more in butanediamine, hexanediamine, octamethylenediamine, dodecyl diamine.
Described activator is selected from acylated lactams, Toluene-2,4-diisocyanate, one or more in 4-vulcabond, acyl chlorides.
Described coupling agent is sec.-propyl triethoxyl silane.
Described fire retardant is TDE.
Described heatproof antiaging agent is one or more in Hinered phenols antioxidant, phosphite ester kind antioxidant and alkali metal halide.
The preparation method of described high temperature resistant graphite nylon washer material, comprises following preparation process:
(1) graphite and diamine are joined in alcohol solvent, ultrasonic dispersion 0.5-1 hour, is warming up to 70-80 DEG C, and nitrogen protection, mixed after 1-2 hour, obtained modified graphite suspension liquid;
(2) nylon 66 is ground, obtain 80-100 object nylon 66 powders;
(3) nylon 66 powders of being prepared by step (2) are slowly added in the modified graphite suspension liquid of step (1); after mixing at 80-100 DEG C underpressure distillation 1-2 hour; then add other remaining components to shake up fast, pour at once in 150-180 DEG C of preheated mould and obtain product.
Compared with the prior art, beneficial effect of the present invention is as follows:
The present invention adopts nylon 66 for main raw material(s), improve the comprehensive mechanical property of material, tetrafluoroethylene can improve weathering resistance and wear resistance as weighting material, graphite can improve weathering resistance, an and self-lubricating function, adopt diamine modified graphite, in graphite, introduce like this amido, not only can with activator isocyanate reaction, can also form hydrogen bond by the amide group in nylon molecule, strengthen like this interface interaction of graphite oxide and nylon, comprehensively improve the mechanical property of material, significantly improve resistance to elevated temperatures, when material of the present invention has kept the good mechanical property of material monolithic, resistance to elevated temperatures is remarkable, and production technique is simple, steady quality, environmentally safe.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1:
A kind of high temperature resistant graphite nylon washer material, is made up of the component of following weight part: 6650 parts of nylon, 10 parts, graphite, 8 parts of tetrafluoroethylene, 1 part of butanediamine, 0.5 part of hexanediamine, 1 part of maleic anhydride graft polyphenylene oxide, 0.15 part of carbon fibre, 5 parts, xantal powder, 1.2 parts of nipagin esters, 1.5 parts, fire-retardant red phosphorus, 4 parts of acylated lactams, 3 parts of sec.-propyl triethoxyl silanes, 5 parts of TDE, polymerization hinder 0.8 part, phenol more.
Preparation method:
(1) graphite and diamine are joined in alcohol solvent, ultrasonic dispersion 1 hour, is warming up to 70 DEG C, and nitrogen protection, mixed after 1 hour, obtained modified graphite suspension liquid;
(2) nylon 66 is ground, obtain 80 object nylon 66 powders;
(3) nylon 66 powders of being prepared by step (2) are slowly added in the modified graphite suspension liquid of step (1); underpressure distillation 2 hours at 80 DEG C after mixing; then add other remaining components to shake up fast, pour at once in 150 DEG C of preheated moulds and obtain product.
High temperature resistant graphite nylon washer Tensile strength prepared by the present embodiment 1 reaches 125-135MPa, and slip resistance can reach 75-80MPa, and wear resisting property, flame retardant properties excellence, have self-lubricating function, can adapt to the Working environment of 100 DEG C.
Embodiment 2:
A kind of high temperature resistant graphite nylon washer material, component by following weight part forms: 6655 parts of nylon, 13 parts, graphite, 9 parts of tetrafluoroethylene, 2 parts of octamethylenediamines, 1.5 parts of maleic anhydride graft polyphenylene oxide, 0.16 part of carbon fibre, 7 parts, xantal powder, 1.3 parts of nipagin esters, 2.2 parts, fire-retardant red phosphorus, Toluene-2,4-diisocyanate, 45 parts of 4-vulcabond, 4 parts of sec.-propyl triethoxyl silanes, 6 parts of TDE, 1 part of tricresyl phosphite monooctyl ester.
Preparation method:
(1) graphite and diamine are joined in alcohol solvent, ultrasonic dispersion 1 hour, is warming up to 80 DEG C, and nitrogen protection, mixed after 1 hour, obtained modified graphite suspension liquid;
(2) nylon 66 is ground, obtain 100 object nylon 66 powders;
(3) nylon 66 powders of being prepared by step (2) are slowly added in the modified graphite suspension liquid of step (1); after mixing at 100 DEG C underpressure distillation 1-2 hour; then add other remaining components to shake up fast, pour at once in 160 DEG C of preheated moulds and obtain product.
High temperature resistant graphite nylon washer Tensile strength prepared by the present embodiment 1 reaches 130-140MPa, and slip resistance can reach 82-90MPa, and wear resisting property, flame retardant properties excellence, have self-lubricating function, can adapt to the Working environment of 120 DEG C.
Embodiment 3:
A kind of high temperature resistant graphite nylon washer material, is made up of the component of following weight part: 6660 parts of nylon, 15 parts, graphite, 10 parts of tetrafluoroethylene, 3 parts of dodecyl diamines, 2 parts of maleic anhydride graft polyphenylene oxide, 0.17 part of carbon fibre, 8 parts, xantal powder, nipagin esters .3 part, 2.5 parts, fire-retardant red phosphorus, 6 parts of acyl chlorides, 5 parts of sec.-propyl triethoxyl silanes, 8 parts of TDE, 1.2 parts, calcium chloride.
Preparation method:
(1) graphite and diamine are joined in alcohol solvent, ultrasonic dispersion 1 hour, is warming up to 80 DEG C, and nitrogen protection, mixed after 2 hours, obtained modified graphite suspension liquid;
(2) nylon 66 is ground, obtain 100 object nylon 66 powders;
(3) nylon 66 powders of being prepared by step (2) are slowly added in the modified graphite suspension liquid of step (1); underpressure distillation 2 hours at 100 DEG C after mixing; then add other remaining components to shake up fast, pour at once in 180 DEG C of preheated moulds and obtain product.
High temperature resistant graphite nylon washer Tensile strength prepared by the present embodiment 1 reaches 128-136MPa, and slip resistance can reach 80-85MPa, and wear resisting property, flame retardant properties excellence, have self-lubricating function, can adapt to the Working environment of 110 DEG C.
Claims (7)
1. a high temperature resistant graphite nylon washer material, is characterized in that: the component by following weight part forms: nylon 6650-60 part, graphite 10-15 part, tetrafluoroethylene 8-10 part, diamine 1.5-3 part, maleic anhydride graft polyphenylene oxide 0.5-2 part, carbon fibre 0.15-0.17 part, xantal powder 5-8 part, nipagin esters 1.2-1.3 part, fire-retardant red phosphorus 1.5-2.5 part, activator 4-6 part, coupling agent 3-5 part, fire retardant 5-8 part, heatproof antiaging agent 0.8-1.2 part.
2. high temperature resistant graphite nylon washer material according to claim 1, is characterized in that: described diamine is one or more in butanediamine, hexanediamine, octamethylenediamine, dodecyl diamine.
3. high temperature resistant graphite nylon washer material according to claim 1, is characterized in that: described activator is selected from acylated lactams, Toluene-2,4-diisocyanate one or more in 4-vulcabond, acyl chlorides.
4. high temperature resistant graphite nylon washer material according to claim 1, is characterized in that: described coupling agent is sec.-propyl triethoxyl silane.
5. high temperature resistant graphite nylon washer material according to claim 1, is characterized in that: described fire retardant is TDE.
6. high temperature resistant graphite nylon washer material according to claim 1, is characterized in that: described heatproof antiaging agent is one or more in Hinered phenols antioxidant, phosphite ester kind antioxidant and alkali metal halide.
7. a preparation method for high temperature resistant graphite nylon washer material as claimed in claim 1, is characterized in that: comprise following preparation process:
(1) graphite and diamine are joined in alcohol solvent, ultrasonic dispersion 0.5-1 hour, is warming up to 70-80 DEG C, and nitrogen protection, mixed after 1-2 hour, obtained modified graphite suspension liquid;
(2) nylon 66 is ground, obtain 80-100 object nylon 66 powders;
(3) nylon 66 powders of being prepared by step (2) are slowly added in the modified graphite suspension liquid of step (1); after mixing at 80-100 DEG C underpressure distillation 1-2 hour; then add other remaining components to shake up fast, pour at once in 150-180 DEG C of preheated mould and obtain product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199065.3A CN103937236B (en) | 2014-05-12 | 2014-05-12 | A kind of high temperature resistant graphite nylon washer material and preparation method thereof |
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| CN201410199065.3A CN103937236B (en) | 2014-05-12 | 2014-05-12 | A kind of high temperature resistant graphite nylon washer material and preparation method thereof |
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| CN103937236A true CN103937236A (en) | 2014-07-23 |
| CN103937236B CN103937236B (en) | 2016-05-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589931A (en) * | 2016-11-16 | 2017-04-26 | 马鞍山市华能电力线路器材有限责任公司 | High-toughness flame-retardant nylon composite for electric power fitting and preparation method of nylon composite |
| CN109027231A (en) * | 2018-09-21 | 2018-12-18 | 瑞安市三和金属制品有限公司 | A kind of composite-gasket production technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050250885A1 (en) * | 2004-05-04 | 2005-11-10 | General Electric Company | Halogen-free flame retardant polyamide composition with improved electrical properties |
| CN103756300A (en) * | 2013-12-20 | 2014-04-30 | 铜陵市金利电子有限公司 | Flame-retarding and high-transmittance nylon gasket material |
| CN103756308A (en) * | 2013-12-27 | 2014-04-30 | 吴江市东泰电力特种开关有限公司 | Inflaming retarding wear-resisting nylon composite material and preparation method thereof |
-
2014
- 2014-05-12 CN CN201410199065.3A patent/CN103937236B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050250885A1 (en) * | 2004-05-04 | 2005-11-10 | General Electric Company | Halogen-free flame retardant polyamide composition with improved electrical properties |
| CN103756300A (en) * | 2013-12-20 | 2014-04-30 | 铜陵市金利电子有限公司 | Flame-retarding and high-transmittance nylon gasket material |
| CN103756308A (en) * | 2013-12-27 | 2014-04-30 | 吴江市东泰电力特种开关有限公司 | Inflaming retarding wear-resisting nylon composite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589931A (en) * | 2016-11-16 | 2017-04-26 | 马鞍山市华能电力线路器材有限责任公司 | High-toughness flame-retardant nylon composite for electric power fitting and preparation method of nylon composite |
| CN109027231A (en) * | 2018-09-21 | 2018-12-18 | 瑞安市三和金属制品有限公司 | A kind of composite-gasket production technology |
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| CN103937236B (en) | 2016-05-11 |
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