CN1063187C - Process for preparing core-shell particle toughened polystyrene material - Google Patents
Process for preparing core-shell particle toughened polystyrene material Download PDFInfo
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- CN1063187C CN1063187C CN97106353A CN97106353A CN1063187C CN 1063187 C CN1063187 C CN 1063187C CN 97106353 A CN97106353 A CN 97106353A CN 97106353 A CN97106353 A CN 97106353A CN 1063187 C CN1063187 C CN 1063187C
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Abstract
The present invention relates to technique for preparing toughened and modified polystyrene material of core-shell particulates. In the technique, 1 to 20 parts by weight of core-shell copolymerized particulate whose average particle diameter is from 60 to 150 nanometers are first added in 99 to 80 parts by weight of styrene; afterwards, dibenzoyl peroxide or azodiisobutyronitrile as initiator is added; the addition of the initiator is 0.1 to 1% of that of the styrene according to a weight percentage; prepolymerization is carried out at 70 to 90 DEG C for 0.1 to 5 hours; thermal treatment is carried out at 40 to 100 DEG C for 0.1 to 5 hours. The toughened and modified material prepared by the technique has the transparence of pure polystyrene, and simultaneously, shock strength is about one time larger than that of the pure polystyrene; the toughened and modified material can be used in plastic industry.
Description
The present invention relates to core-shell particle toughened modified polystyrene material preparation method, the preparation technology of particularly core-shell particle toughened modification transparent polystyrene material.
Polystyrene is the most facile kind in the transparent plastics, but owing to himself fragility shortcoming, is very limited in the application, only is used for low grade products at present.So far, people have done a large amount of work and have been used for the toughness reinforcing of p-poly-phenyl ethene, as: the terpolymer (ABS resin) of the graft copolymerization of vinylbenzene and polyhutadiene (high-impact polystyrene), vinylbenzene and vinyl cyanide, divinyl and the blend of polystyrene and other polymkeric substance etc.But the general transparency of the material of these method gained is relatively poor.Because the composite emulsion polymerization technology can design the macromolecule emulsion microballoon from microcosmic, regulate copolymer component, the refractive index of nucleocapsid and base material is complementary, change the composite emulsion polymerization condition simultaneously and make the core-shell particle size be lower than 0.1 μ m, can not influenced the transparent polystyrene of the transparency through physical mixed.Along with going deep into that particulate blending toughening, enhancing are studied, people have been used for multiple core-shell particle the blending and modifying of plastics.Document Polym.Mater.Sci.Eng.1993,70, the A.Maazouz of France among the 13-14, what usefulness U.S. Rohm and Haas companies such as H.Sautereau provided is glue nuclear with butyl polyacrylate or polyhutadiene, is that the core-shell particle (median size 300nm) of shell has been made the research report to TOUGHENING MODIFICATION OF EPOXY RESINS with the crosslinked polymethylmethacrylaparticles.Can improve the toughness of Resins, epoxy greatly and don't reduce its thermal characteristics with this core-shell particle, toughness reinforcing degree can be regulated by the core-shell particle structure.But the particulate mean sizes is the transparency that 300nm obviously can influence base material, the transparent problem of not mentioned material still in this report.
For overcoming the shortcoming that exists in the above-mentioned document, the purpose of this invention is to provide a kind of core-shell particle toughened polystyrene material, this preparation technology makes the material that makes both have the transparency of pure polystyrene, has simultaneously than the better shock strength of pure polystyrene.
The objective of the invention is to realize: a kind of process for preparing core-shell particle toughened polystyrene material by following technical scheme; at first adding median size in vinylbenzene is the core-shell copolymerized particle of 60～150 nanometers; wherein in parts by weight; core-shell copolymerized particle: vinylbenzene is 1～20: 99～80; add initiator dibenzoyl peroxide or Diisopropyl azodicarboxylate then; the initiator add-on is 0.1～1% of vinylbenzene amount by weight percentage; pre-polymerization is 0.1～5 hour under 70～90 ℃ of conditions, again in 40～100 ℃ of following thermal treatments 0.1～5 hour.
In the technique scheme, in parts by weight, core-shell copolymerized particle: vinylbenzene is 3～10: 97～90, and the initiator add-on is 0.2～0.5% of vinylbenzene amount by weight percentage.A kind of core-shell particle comprises nuclear, shell, examines to containing alkenyl arene segment and linking agent, and shell is the segment that contains alkenyl arene, and the segment of shell links by an end and the nuclear phase of linking agent.Another kind of core-shell particle comprises nuclear, shell, and nuclear contains alkenyl arene segment, acrylate segment and linking agent, and shell is the segment that contains alkenyl arene, and the segment of shell links by an end and the nuclear phase of linking agent.
In above-mentioned two kinds of core-shell particles, alkenyl arene is vinylbenzene, alpha-methyl styrene, p-methylstyrene, and preferred version is a vinylbenzene.Linking agent is two methacryloxypropyl phenyl-propanes, polyethersulfone diene macromonomer or its mixture.Acrylate is methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate, and preferred version is a butyl acrylate.Core-shell particle particle diameter preferable range is 80～120 nanometers.
Above-mentioned cross-linked core-shell copolymerized particle is two kinds of soft nuclear duricrust particulate and stone duricrust particulates, and the weight ratio of its center and shell is 1: 1.279～1.830.Its preparation method is that soft nuclear duricrust particulate adopts the multi-step emulsion polymerization method synthetic, when the fs forms nuclear, add acrylate and alkenyl arene, with two methacryloxypropyl phenyl-propanes (BVA) or polyethersulfone diene macromonomer (BVPES) linking agent copolymerzation with cross-linking with it, subordinate phase adds vinylbenzene again and forms shell, has the cross-linker molecules chain to be associated between nuclear and the shell.The gained emulsion through breakdown of emulsion, methyl alcohol wash, drying etc. promptly gets soft nuclear duricrust particulate powder.
In the above-mentioned core-shell particle with crosslinked nuclear, double methyl methacrylate class linking agent can be two methacryloxypropyl phenyl-propanes (BVA) or polyethersulfone diene macromonomer (BVPES) consumption account for nuclear partial monosomy gross weight 0.1～20%, preferable range 1～5%.Content of butyl acrylate is 5～50% of nuclear partial monosomy weight in nuclear, preferable range 10～30%.Used initiator can be Potassium Persulphate (K
2S
2O
8), ammonium persulphate [(NH
4)
2S
2O
8] and the redox system of above-mentioned two kinds of initiators and ferrous sulfate, consumption is 0.1～1% of a monomer total amount, preferable range is 0.2～0.5%.The emulsifying agent sodium oleate divides two portions to add in the polyreaction of core-shell particle, when a part is nucleation, for 0.5～10% of monomer weight in the nuclear, decides on want size, and is generally more suitable about 1～2%; Adding sodium oleate during the polymerization of second section shell is about 1% of shell monomers total amount, splashes into simultaneously with initiator.The total amount of water is 1.5～3 times of monomer total amount in the prescription that feeds intake.
Synthesizing when the fs forms nuclear of stone duricrust core-shell particle, is nuclear with two methacryloxypropyl phenyl-propanes (BVA) or polyethersulfone diene macromonomer (BVPES) with the alkenyl arene copolymerzation with cross-linking, subordinate phase adds alkenyl arene again and forms shell, has molecular chain to be associated between nuclear and the shell.The gained emulsion through breakdown of emulsion, methyl alcohol wash, drying etc. promptly gets stone duricrust particulate powder.
In the above-mentioned core-shell particle with crosslinked nuclear, double methyl methacrylate class linking agent can be two methacryloxypropyl phenyl-propanes (BVA) or polyethersulfone diene macromonomer (BVPES) consumption account for nuclear partial monosomy gross weight 0.1～20%, preferable range is 1～5%.Used initiator can be Potassium Persulphate (K
2S
2O
8), ammonium persulphate [(NH
4)
2S
2O
8] and the redox system of above-mentioned two kinds of initiators and ferrous sulfate, consumption is 0.1～1% of a monomer total amount, preferable range 0.2～0.5%.The emulsifying agent sodium oleate divides two portions to add in the polyreaction of core-shell particle, when a part is nucleation, for 0.5～10% of monomer weight in the nuclear, decides on want size, and is generally more suitable about 1～2%; Adding sodium oleate during the polymerization of second section shell is about 1% of shell monomers total amount, splashes into simultaneously with initiator.The total amount of water is 1.5～3 times of monomer total amount in the prescription that feeds intake.
The present invention is owing to adopt the cross-linked core-shell particulate of 60～150 nanometers, with the toughness reinforcing transparent polystyrene of bulk technique on the throne, and rationally controlled the add-on of core-shell particle and initiator, and selected suitable polymerization technique, make the toughening material that makes both keep the transparency of pure polystyrene, make the material modified shock strength of polystyrene increase nearly 1 times simultaneously, obtained effect preferably.
[embodiment 1]
Sodium oleate 1 gram is put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (vinylbenzene 45 grams, butyl acrylate 5 grams, two methacryloxypropyl phenyl-propane 0.82 gram), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator K
2S
2O
8(with 20 ml deionized water dissolving, 0.16 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (65 gram), acetone (7.5ml) mixture and sodium oleate (0.5 gram), K
2S
2O
8(0.2 gram), H
2The mixture of O (25 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 60 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 2]
Sodium oleate 1 gram is put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (vinylbenzene 30 grams, butyl acrylate 20 grams, two methacryloxypropyl phenyl-propane 0.82 gram), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator (NH
4)
2S
2O
8(with 20 ml deionized water dissolving, 0.16 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (65 gram), acetone (7.5ml) mixture and sodium oleate (0.5) gram, (NH
4)
2S
2O
8(0.2 gram), H
2The mixture of O (25 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 60 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 3]
Sodium oleate 1.5 grams are put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (vinylbenzene 40 grams, methyl acrylate 5 grams, two methacryloxypropyl phenyl-propane 1.0 grams), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator K
2S
2O
8(with 20 ml deionized water dissolving, 0.16 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (70 gram), acetone (7.5ml) mixture and sodium oleate (0.5 gram), K
2S
2O
8(0.4 gram), H
2The mixture of O (20 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 70 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 4]
Sodium oleate 1.5 grams are put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (alpha-methyl styrene 40 grams, methyl acrylate 5 grams, two methacryloxypropyl phenyl-propane 0.8 gram), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator K
2S
2O
8(with 20 ml deionized water dissolving, 0.16 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (70 gram), acetone (7.5ml) mixture and sodium oleate (0.5 gram), K
2S
2O
8(0.4 gram), H
2The mixture of O (20 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 70 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 5]
Sodium oleate 1.5 grams are put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (p-methylstyrene 45 grams, butyl acrylate 7 grams, two methacryloxypropyl phenyl-propane 1.0 grams), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator K
2S
2O
8(with 20 ml deionized water dissolving, 0.20 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (70 gram), acetone (7.5ml) mixture and sodium oleate (0.5 gram), K
2S
2O
8(0.4 gram), H
2The mixture of O (20 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 70 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 6]
Sodium oleate 1.5 grams are put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (alpha-methyl styrene 40 grams, two methacryloxypropyl phenyl-propane 1.0 grams), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator K
2S
2O
8(with 20 ml deionized water dissolving, 0.18 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (75 gram), acetone (7.5ml) mixture and sodium oleate (0.5 gram), K
2S
2O
8(0.4 gram), H
2The mixture of O (20 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 70 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 7]
Sodium oleate 1.5 grams are put into there-necked flask, add 1 gram sodium bicarbonate and letting nitrogen in and deoxidizing.Add 140 gram deionized water dissolving and turn on agitator, treat that emulsifying agent sodium oleate and sodium bicarbonate dissolve the back (about 20 minutes) that is uniformly dispersed, add first monomer mixture (vinylbenzene 40 grams, two methacryloxypropyl phenyl-propane 1.5 grams), after continuing to stir 20 minutes abundant dispersions, move in 95 ℃ of water-baths, add initiator K
2S
2O
8(with 20 ml deionized water dissolving, 0.2 gram) reaction 1 hour, this moment, system was blue look, was cooled to 80 ℃.Suction filtration is removed condensation product, adds 0.1 gram sodium oleate again, simultaneously drip styrene (70 gram), acetone (7.5ml) mixture and sodium oleate (0.5 gram), K
2S
2O
8(0.4 gram), H
2The mixture of O (20 gram) continues reaction 2～2.5 hours, stops promptly to get the cross-linked core-shell copolymerized particle emulsion.
Above-mentioned emulsion is diluted to solid content about 5% through methyl alcohol, with 5% salt naphtenic acid, adds about 580 milliliters altogether, heating is changed 10～20 minutes with fixed attention, and precipitation is through methanol wash centrifugal settling, prior to 70 ℃ of forced air dryings, in 40 ℃ of vacuum-dryings 24 hours, promptly get fine-particle powder again.
[embodiment 8]
Get new steaming vinylbenzene 90 grams and add the core-shell copolymerized particle that 10 gram embodiment 3 make, particle size 129nm.Adding dibenzoyl peroxide 0.3 restrains in heating in water bath dissolves, letting nitrogen in and deoxidizing, 80 ℃ of pre-polymerizations are cooled to 40 ℃ and pour into mould to certain viscosity, in 45 ℃ 5 hours, 50 ℃ 4 hours, 60 ℃ 3 hours, 70 ℃ 2 hours, 80 ℃ were heating and curing in 1 hour, again in 95 ℃ 0.5 hour, 100 ℃ of further thermal treatments in 1 hour.Cooling and demolding promptly gets modification transparent polystyrene material.Through machining is test bars, records light transmission 87.5% (wavelength 700nm), and shock strength is 6.05KJ/m
2, be pure polystyrene shock strength 3.14KJ/m
21.9 times.
[embodiment 9]
Get new steaming vinylbenzene 95 grams and add the core-shell copolymerized particle that 5 gram embodiment 4 make, particle size 129nm.Adding dibenzoyl peroxide 0.5 restrains in heating in water bath dissolves, letting nitrogen in and deoxidizing, 80 ℃ of pre-polymerizations are cooled to 40 ℃ and pour into mould to certain viscosity, in 45 ℃ 5 hours, 50 ℃ 4 hours, 60 ℃ 3 hours, 70 ℃ 2 hours, 80 ℃ were heating and curing in 1 hour, again in 95 ℃ 0.5 hour, 100 ℃ of further thermal treatments in 1 hour.Cooling and demolding promptly gets modification transparent polystyrene material.Through processing batten test light transmission 88% (wavelength 700nm), shock strength is 6.03KJ/m
2, be pure polystyrene shock strength 3.14KJ/m
2Nearly 2 times.
[embodiment 10]
Get new steaming vinylbenzene 97 grams and add the core-shell copolymerized particle that 3 gram embodiment 5 make, particle size 105nm.Adding Diisopropyl azodicarboxylate 0.5 restrains in heating in water bath and dissolves, letting nitrogen in and deoxidizing, 80 ℃ of pre-polymerizations are cooled to 40 ℃ and pour into mould to certain viscosity, in 45 ℃ 5 hours, 50 ℃ 4 hours, 60 ℃ 3 hours, 70 ℃ 2 hours, 80 ℃ were heating and curing in 1 hour, again in 95 ℃ 0.5 hour, 100 ℃ of further thermal treatments in 1 hour.Cooling and demolding promptly gets modification transparent polystyrene material.Through processing batten test light transmission 88.5% (wavelength 700nm), shock strength is 5.85KJ/m
2, be pure polystyrene shock strength 3.14KJ/m
21.8 times.
[embodiment 11]
Get new steaming vinylbenzene 98 grams and add the core-shell copolymerized particle that 2 gram embodiment 6 make, particle size 90nm.Add Diisopropyl azodicarboxylate 0.6 and restrain in the heating in water bath dissolving, letting nitrogen in and deoxidizing, 80 ℃ of pre-polymerizations are cooled to 40 ℃ and pour into mould to certain viscosity, in 45 ℃ 5 hours, 50 ℃ 4 hours, 60 ℃ 3 hours, 70 ℃ 2 hours, 80 ℃ were heating and curing in 1 hour, again in 100 ℃ of further thermal treatments in 1.5 hours.Cooling and demolding promptly gets modification transparent polystyrene material.Through processing batten test light transmission 88% (wavelength 700nm), shock strength is 6.38KJ/m
2, be pure polystyrene shock strength 3.14KJ/m
22.03 times.
[embodiment 12]
Get new steaming vinylbenzene 92 grams and add the core-shell copolymerized particle that 8 gram embodiment 7 make, particle size 129nm.Add BPO0.4 and restrain in the heating in water bath dissolving, letting nitrogen in and deoxidizing, 80 ℃ of pre-polymerizations are cooled to 40 ℃ and pour into mould to certain viscosity, in 45 ℃ 5 hours, 50 ℃ 4 hours, 60 ℃ 3 hours, 70 ℃ 2 hours, 80 ℃ were heating and curing in 1 hour, again in 100 ℃ of further thermal treatments in 2 hours.Cooling and demolding promptly gets modification transparent polystyrene material.Through processing batten test light transmission 89% (wavelength 700nm), shock strength is 6.40KJ/m
2, be pure polystyrene shock strength 3.14KJ/m
22.04 times.
[comparative example]
Behind pure polystyrene processing batten, measuring its light transmission is 88～89% (wavelength 700nm), and shock strength is 3.14KJ/m
2
Claims (9)
1. process for preparing core-shell particle toughened polystyrene material; it is characterized in that at first adding median size in vinylbenzene is the core-shell copolymerized particle of 60～150 nanometers; wherein core-shell particle comprises nuclear; shell; nuclear is for containing alkenyl arene segment and linking agent; shell is the segment that contains alkenyl arene; the segment of shell links by an end and the nuclear phase of linking agent; nuclear is 1: 1.279～1.830 with the weight ratio of shell; in parts by weight; core-shell copolymerized particle: vinylbenzene is 1～20: 99～80; add initiator dibenzoyl peroxide or Diisopropyl azodicarboxylate then; the initiator add-on is 0.1～1% of vinylbenzene amount by weight percentage; pre-polymerization is 0.1～5 hour under 70～90 ℃ of conditions, again in 40～100 ℃ of following thermal treatments 0.1～5 hour.
2. according to the described process for preparing core-shell particle toughened polystyrene material of claim 1, it is characterized in that in parts by weight core-shell copolymerized particle: vinylbenzene is 3～10: 97～90.
3. according to the described process for preparing core-shell particle toughened polystyrene material of claim 1, it is characterized in that by weight percentage that the initiator add-on is 0.2～0.5% of a vinylbenzene amount.
4. according to the described process for preparing core-shell particle toughened polystyrene material of claim 1, it is characterized in that core-shell particle comprises nuclear, shell, nuclear contains alkenyl arene segment, acrylate segment and linking agent, shell is the segment that contains alkenyl arene, and the segment of shell links by an end and the nuclear phase of linking agent.
5. according to claim 1 or 4 described process for preparing core-shell particle toughened polystyrene material, it is characterized in that alkenyl arene is vinylbenzene, alpha-methyl styrene, p-methylstyrene.
6. according to the described process for preparing core-shell particle toughened polystyrene material of claim 5, it is characterized in that alkenyl arene is a vinylbenzene.
7. according to claim 1 or 4 described process for preparing core-shell particle toughened polystyrene material, it is characterized in that linking agent is two methacryloxypropyl phenyl-propanes, polyethersulfone diene macromonomer or its mixture.
8. according to the described process for preparing core-shell particle toughened polystyrene material of claim 4, it is characterized in that acrylate is methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate.
9. described according to Claim 8 process for preparing core-shell particle toughened polystyrene material is characterized in that acrylate is a butyl acrylate.
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| CN97106353A CN1063187C (en) | 1997-04-03 | 1997-04-03 | Process for preparing core-shell particle toughened polystyrene material |
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| EP1314752A4 (en) | 2000-08-22 | 2004-08-18 | China Petroleum & Chemical | Tenacity plastic and its preparation method |
| CN100491461C (en) * | 2006-01-23 | 2009-05-27 | 中国石油化工股份有限公司 | Toughened polystyrene composition and its preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681915A (en) * | 1985-12-20 | 1987-07-21 | General Electric Company | Impact modified polyphenylene ether-polyamide compositions |
| EP0300212A2 (en) * | 1987-07-21 | 1989-01-25 | General Electric Company | Impact modified poly(alkenyl aromatic) resin compostions |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681915A (en) * | 1985-12-20 | 1987-07-21 | General Electric Company | Impact modified polyphenylene ether-polyamide compositions |
| EP0300212A2 (en) * | 1987-07-21 | 1989-01-25 | General Electric Company | Impact modified poly(alkenyl aromatic) resin compostions |
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