CN114426648A - Raw material composition and method for preparing impact-resistant polystyrene material - Google Patents
Raw material composition and method for preparing impact-resistant polystyrene material Download PDFInfo
- Publication number
- CN114426648A CN114426648A CN202011186032.7A CN202011186032A CN114426648A CN 114426648 A CN114426648 A CN 114426648A CN 202011186032 A CN202011186032 A CN 202011186032A CN 114426648 A CN114426648 A CN 114426648A
- Authority
- CN
- China
- Prior art keywords
- mixed material
- polymerization reaction
- temperature
- styrene
- prepolymerization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 115
- 239000004793 Polystyrene Substances 0.000 title claims abstract description 43
- 229920002223 polystyrene Polymers 0.000 title claims abstract description 41
- 239000002994 raw material Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000203 mixture Substances 0.000 title claims abstract description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 26
- 229920001971 elastomer Polymers 0.000 claims abstract description 24
- 239000005060 rubber Substances 0.000 claims abstract description 24
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 22
- 239000005064 Low cis polybutadiene Substances 0.000 claims abstract description 20
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 abstract description 16
- 239000003999 initiator Substances 0.000 abstract description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 7
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The invention provides a method for preparing an impact-resistant polystyrene material, which comprises the following steps of a) 60-99% of styrene by mass fraction; b) 1% -40% of ethylbenzene; c) initiator 100-800 ppm; d) 1 to 15 percent of toughened rubber; wherein the toughened rubber is prepared from a raw material composition comprising 88-92% of low cis-polybutadiene and 8-12% of styrene butadiene rubber in percentage by mass by adopting the processes of preheating, twice prepolymerization and twice polymerization. The preparation method can prepare the impact-resistant polystyrene material with higher impact strength and higher heat distortion temperature.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a raw material composition and a method for preparing an impact-resistant polystyrene material.
Background
Household appliances are various in types and can be divided into the following according to the purposes: kitchen appliances, household appliances, audio-visual appliances, air-conditioning appliances, medical fitness appliances and other household appliances. In the materials of the household appliance shell, most of the materials are thermoplastic plastics, and the rest are thermosetting plastics; among the thermoplastics, the general-purpose plastics are predominant; thermosets typically include phenolics, aminoplasts, epoxies, and the like. At present, in the use of the housing material for home appliances, two types of materials, acrylonitrile-butadiene-styrene copolymer and high impact polystyrene resin, are widely used.
Polystyrene (PS) has excellent electrical insulation, colorability and processing fluidity, good water resistance, light resistance, chemical corrosion resistance, good rigidity and certain mechanical property, is widely applied to the industries of instrument packaging, buildings, medicines, automobiles, household appliances and the like, and is one of five common plastics. Polystyrene (PS) is widely applied in the fields of household appliances, automobiles and the like, but the PS is brittle, has poor environmental stress cracking resistance and solvent resistance, and has low load deformation temperature and impact strength, so that the application range of the PS is limited. In the prior art, it is known that the impact strength of polystyrene can be greatly improved by dispersing the added rubbery particles throughout the polystyrene resin. However, most of the traditional preparation methods only have one prepolymerization reactor, the rubber particles are not uniformly distributed and are larger, and the impact strength and the heat distortion temperature of the material are limited.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a raw material composition for preparing an impact polystyrene material, by which a polystyrene material having high impact strength and heat distortion temperature can be prepared.
The second purpose of the invention is to provide a preparation method of the impact-resistant polystyrene material corresponding to the first purpose.
It is a further object of the present invention to provide an impact resistant polystyrene material corresponding to the above object.
In order to achieve one of the purposes, the technical scheme adopted by the invention is as follows:
a raw material composition for preparing an impact polystyrene material comprises the following components in percentage by mass:
wherein the toughened rubber comprises 88-92% of low cis-polybutadiene and 8-12% of styrene butadiene rubber in mass fraction.
The inventor of the present application has found that a raw material composition comprising a toughening rubber comprising 88 to 92% of low-cis polybutadiene and 8 to 12% of styrene-butadiene rubber as a toughening agent and having the contents of the respective components limited within the above ranges can produce a polystyrene material having high impact resistance and heat distortion temperature.
According to some embodiments of the invention, the mass fraction of styrene is between 80% and 98%.
According to some embodiments of the invention, the mass fraction of ethylbenzene is between 2% and 20%.
According to some embodiments of the invention, the mass fraction of the initiator is between 150ppm and 750 ppm.
According to some embodiments of the invention, the mass fraction of the toughened rubber is between 2% and 10%.
According to some embodiments of the invention, the toughening rubber comprises 89% to 91% by mass of low cis-polybutadiene.
According to some embodiments of the invention, the toughened rubber comprises 9% to 11% by mass of styrene butadiene rubber.
According to some embodiments of the invention, the toughening rubber comprises 90% low cis-polybutadiene and 10% styrene-butadiene rubber in mass fraction.
In some preferred embodiments of the present invention, the Mooney viscosity of the low-cis polybutadiene is 45 to 55.
In some preferred embodiments of the present invention, the low-cis polybutadiene has a 5% styrene solution viscosity of 150 to 190.
In some preferred embodiments of the present invention, the styrene-butadiene rubber has a content of structural units derived from styrene of 60 mol% to 85 mol%.
According to some embodiments of the present invention, the term "styrene-butadiene rubber" refers to a polymerization product formed from butadiene and styrene.
According to some embodiments of the present invention, the styrene-butadiene rubber has a content of structural units derived from styrene of 75 mol% to 85 mol%.
According to some embodiments of the invention, the initiator is dicumyl peroxide.
In order to achieve the second purpose, the invention adopts the following technical scheme:
a preparation method of an impact polystyrene material comprises the following steps:
s1, carrying out preheating treatment on the raw material composition to obtain a first mixed material;
s2, carrying out a first pre-polymerization reaction on the first mixed material to obtain a second mixed material;
s3, carrying out a second pre-polymerization reaction on the second mixed material to obtain a third mixed material;
s4, carrying out a first polymerization reaction on the third mixed material to obtain a fourth mixed material;
s5, carrying out a second polymerization reaction on the fourth mixed material to obtain a fifth mixed material containing a polystyrene material; and
optionally, S6, performing devolatilization treatment on the fifth mixed material to obtain the polystyrene material.
In some preferred embodiments of the present invention, the temperature of the preheating treatment in step S1 is 60 to 80 ℃, preferably 65 to 75 ℃.
In some preferred embodiments of the present invention, in step S1, the time of the preheating treatment is 1min to 45min, preferably 15min to 25 min.
In some preferred embodiments of the present invention, the temperature of the first prepolymerization reaction in step S2 is 75 to 85 ℃, preferably 77 to 83 ℃.
In some preferred embodiments of the present invention, in step S2, the time for the first prepolymerization reaction is 1min to 45min, preferably 15min to 25 min.
In some preferred embodiments of the present invention, in step S2, the first pre-polymerization reaction is performed under stirring at a speed of 200r/min to 250 r/min.
In some preferred embodiments of the present invention, the temperature of the second prepolymerization reaction in step S3 is 85 ℃ to 95 ℃, preferably 87 ℃ to 93 ℃.
In some preferred embodiments of the present invention, in step S3, the time for the second prepolymerization reaction is 1min to 45min, preferably 15min to 25 min.
In some preferred embodiments of the present invention, in step S3, the second pre-polymerization reaction is performed under stirring at a speed of 100r/min to 150 r/min.
In some preferred embodiments of the present invention, the temperature of the first polymerization reaction in step S4 is 120 to 130 ℃, preferably 122 to 128 ℃.
In some preferred embodiments of the present invention, in step S4, the time of the first polymerization reaction is 10min to 80min, preferably 50min to 70 min.
In some preferred embodiments of the present invention, in step S4, the first polymerization reaction is performed under stirring at a speed of 50r/min to 100 r/min.
In some preferred embodiments of the present invention, in step S5, the temperature of the second polymerization reaction is 130 ℃ to 140 ℃, preferably 132 ℃ to 138 ℃.
In some preferred embodiments of the present invention, in step S5, the time for the second polymerization reaction is 10min to 80min, preferably 50min to 70 min.
In some preferred embodiments of the present invention, in step S5, the second polymerization reaction is performed under stirring at a speed of 30r/min to 70 r/min.
In some preferred embodiments of the present invention, the pressure of the devolatilization process in step S6 is between-10 KPa and 0KPa, preferably between-8 KPa and-2 KPa.
In some preferred embodiments of the present invention, the temperature of the devolatilization process in step S6 is 230 ℃ to 250 ℃, preferably 235 ℃ to 245 ℃.
In some preferred embodiments of the present invention, the devolatilization process time in step S6 is 10min to 90min, preferably 70min to 85 min.
In order to achieve the third purpose, the technical scheme adopted by the invention is as follows:
an impact polystyrene material is prepared by taking the raw material composition as a raw material or according to the preparation method.
The invention further provides an application of the impact-resistant polystyrene material as a raw material for preparing a household appliance shell.
According to some embodiments of the present invention, the impact polystyrene material provided by the present invention has high impact strength and heat distortion temperature, and is particularly suitable for being used as a raw material for preparing a housing of a household appliance.
The invention has the beneficial effects that: according to the impact-resistant polystyrene material provided by the invention, as the optimal process production conditions and the appropriate toughening rubber are adopted in the production process, the obtained polystyrene material has good thermal deformation temperature and impact strength, can be directly used for manufacturing a shell of a household appliance, reduces intermediate links, saves the cost and has strong practicability.
Detailed Description
The present invention will be described in detail below with reference to examples, but the scope of the present invention is not limited to the following description.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available from commercial sources.
In the following embodiments:
the cantilever beam impact strength is measured according to the standard ISO 180;
tensile strength is determined with reference to the standard ASTM-638;
heat distortion temperature is measured according to the standard ASTM-1525;
flexural modulus is determined with reference to the standard ASTM-790.
In the following embodiments, unless otherwise specified, dicumyl peroxide is used as the initiator, and a mixture of 90 wt% low-cis polybutadiene with a Mooney viscosity of 53 and a 5% styrene solution viscosity of 164 and 10 wt% styrene-butadiene rubber is used as the toughening rubber; the styrene-butadiene rubber contained a structural unit derived from styrene in an amount of 70 mol%.
Example 1
The method comprises the following steps: raw material materials comprising styrene, ethylbenzene, an initiator and toughened rubber (wherein the content of the ethylbenzene is 15%, the content of the initiator is 500ppm, the content of the toughened rubber is 8%, and the balance is styrene) are introduced into a preheater at a flow rate of 20t/h, the temperature of the preheater is controlled to be 70 ℃, the retention time of the raw material materials in the preheater is controlled to be about 20min, and a first mixed material is obtained from an outlet of the preheater.
Step two: and (3) introducing the first mixed material obtained in the step (I) into a first prepolymerization reactor, controlling the temperature of the first prepolymerization reactor to be 80 ℃, the stirring speed to be 225r/min and the residence time of the first mixed material in the first prepolymerization reactor to be about 20min, and obtaining a second mixed material from the outlet of the first prepolymerization reactor.
Step three: and (3) introducing the second mixed material obtained in the step (II) into a second prepolymerization reactor, controlling the temperature of the second prepolymerization reactor to be 90 ℃, the stirring speed to be 125r/min and the residence time of the second mixed material in the second prepolymerization reactor to be about 20min, and obtaining a third mixed material from the outlet of the second prepolymerization reactor.
Step four: and (3) introducing the third mixed material obtained in the step (three) into the first reactor, controlling the temperature of the first reactor to be 125 ℃, the stirring speed to be 70r/min and the residence time of the third mixed material in the first reactor to be about 60min, and obtaining a fourth mixed material from the outlet of the first reactor.
Step five: and (3) introducing the fourth mixed material obtained in the step four into a second reactor, controlling the temperature of the second reactor to be 135 ℃, the stirring speed to be 50r/min and the retention time of the fourth mixed material in the second reactor to be about 60min, and obtaining a fifth mixed material from the outlet of the second reactor.
Step six: and (4) introducing the fifth mixed material obtained in the step five into a recovering device to remove unreacted raw materials, and then extruding and granulating to obtain the high-gloss impact-resistant polystyrene material, wherein the pressure of the recovering device is controlled to be-5 KPa, the temperature is controlled to be 240 ℃, and the retention time of the fifth mixed material in the recovering device is about 80 min.
The prepared high-gloss impact-resistant polystyrene material was tested, and the Izod impact strength, tensile strength, heat distortion temperature and flexural modulus thereof are shown in Table 1.
Example 2
The method comprises the following steps: raw material materials comprising styrene, ethylbenzene, an initiator and toughened rubber (wherein the content of the ethylbenzene is 12%, the content of the initiator is 550ppm, the content of the toughened rubber is 10%, and the balance is styrene) are introduced into a preheater at a flow rate of 20t/h, the temperature of the preheater is controlled to be 72 ℃, the retention time of the raw material materials in the preheater is controlled to be about 18min, and a first mixed material is obtained from an outlet of the preheater.
Step two: and (3) introducing the first mixed material obtained in the step (I) into a first prepolymerization reactor, controlling the temperature of the first prepolymerization reactor to be 78 ℃, the stirring speed to be 230r/min and the residence time of the first mixed material in the first prepolymerization reactor to be about 18min, and obtaining a second mixed material from the outlet of the first prepolymerization reactor.
Step three: and (3) introducing the second mixed material obtained in the step (II) into a second prepolymerization reactor, controlling the temperature of the second prepolymerization reactor to be 92 ℃, the stirring speed to be 120r/min and the residence time of the second mixed material in the second prepolymerization reactor to be about 22min, and obtaining a third mixed material from the outlet of the second prepolymerization reactor.
Step four: and (3) introducing the third mixed material obtained in the step (three) into the first reactor, controlling the temperature of the first reactor to be 125 ℃, the stirring speed to be 75r/min and the residence time of the third mixed material in the first reactor to be about 60min, and obtaining a fourth mixed material from the outlet of the first reactor.
Step five: and (3) introducing the fourth mixed material obtained in the step four into a second reactor, controlling the temperature of the second reactor to be 135 ℃, the stirring speed to be 55r/min and the retention time of the fourth mixed material in the second reactor to be about 58min, and obtaining a fifth mixed material from the outlet of the second reactor.
Step six: and (4) introducing the fifth mixed material obtained in the step five into a recovering device to remove unreacted raw materials, and then extruding and granulating to obtain the high-gloss impact-resistant polystyrene material, wherein the pressure of the recovering device is controlled to be-6 KPa, the temperature is controlled to be 238 ℃, and the residence time of the fifth mixed material in the recovering device is about 83 min.
The prepared high-gloss impact-resistant polystyrene material was tested, and the Izod impact strength, tensile strength, heat distortion temperature and flexural modulus thereof are shown in Table 1.
Example 3
The method comprises the following steps: raw material materials comprising styrene, ethylbenzene, an initiator and toughened rubber (wherein the content of the ethylbenzene is 10%, the content of the initiator is 450ppm, the content of the toughened rubber is 9%, and the balance is styrene) are introduced into a preheater at a flow rate of 20t/h, the temperature of the preheater is controlled to be 68 ℃, the retention time of the raw material materials in the preheater is controlled to be about 22min, and a first mixed material is obtained from an outlet of the preheater.
Step two: and (3) introducing the first mixed material obtained in the step (I) into a first prepolymerization reactor, controlling the temperature of the first prepolymerization reactor to be 80 ℃, the stirring speed to be 220r/min and the residence time of the first mixed material in the first prepolymerization reactor to be about 25min, and obtaining a second mixed material from the outlet of the first prepolymerization reactor.
Step three: and (3) introducing the second mixed material obtained in the step (II) into a second prepolymerization reactor, controlling the temperature of the second prepolymerization reactor to be 90 ℃, the stirring speed to be 120r/min and the residence time of the second mixed material in the second prepolymerization reactor to be about 18min, and obtaining a third mixed material from the outlet of the second prepolymerization reactor.
Step four: and (3) introducing the third mixed material obtained in the step (three) into the first reactor, controlling the temperature of the first reactor to be 123 ℃, the stirring speed to be 67r/min and the residence time of the third mixed material in the first reactor to be about 65min, and obtaining a fourth mixed material from the outlet of the first reactor.
Step five: and (3) introducing the fourth mixed material obtained in the step four into a second reactor, controlling the temperature of the second reactor to be 135 ℃, the stirring speed to be 43r/min and the retention time of the fourth mixed material in the second reactor to be about 60min, and obtaining a fifth mixed material from the outlet of the second reactor.
Step six: and (4) introducing the fifth mixed material obtained in the step five into a recovering device to remove unreacted raw materials, and then extruding and granulating to obtain the high-glossiness impact-resistant polystyrene material, wherein the pressure of the recovering device is controlled to be-4 KPa, the temperature is controlled to be 244 ℃, and the residence time of the fifth mixed material in the recovering device is about 76 min.
The prepared high-gloss impact-resistant polystyrene material was tested, and the Izod impact strength, tensile strength, heat distortion temperature and flexural modulus thereof are shown in Table 1.
Example 4
Example 4 was set up essentially the same as example 1, except that the toughening rubber used consisted of 88 wt% low-cis polybutadiene and 12 wt% styrene-butadiene rubber (the type of low-cis polybutadiene and styrene-butadiene rubber were the same as in example 1).
The resulting polystyrene material was tested and the results are shown in table 1.
Example 5
Example 5 was set up essentially the same as example 1, except that the toughening rubber used consisted of 92 wt% low-cis polybutadiene and 8 wt% styrene-butadiene rubber (the type of low-cis polybutadiene and styrene-butadiene rubber were the same as in example 1).
The resulting polystyrene material was tested and the results are shown in table 1.
Example 6
Example 6 was set up essentially the same as example 1, except that example 6 did not perform step three of example 1, i.e., example 6 underwent only one prepolymerization and two polymerizations.
The resulting polystyrene material was tested and the results are shown in table 1.
Example 7
Example 7 was set up essentially the same as example 1, except that example 7 did not perform step three and step five of example 1, i.e., example 7 underwent only one prepolymerization and one polymerization.
The resulting polystyrene material was tested and the results are shown in table 1.
Comparative example 1
Comparative example 1 was set up to be substantially the same as example 1 except that the toughening rubber used was composed of 85 wt% of low-cis polybutadiene and 20 wt% of styrene-butadiene rubber (the kind of low-cis polybutadiene and styrene-butadiene rubber were the same as in example 1).
The resulting polystyrene material was tested and the results are shown in table 1.
Comparative example 2
Comparative example 2 was set up to be substantially the same as example 1 except that the toughening rubber used was composed of 95 wt% of low-cis polybutadiene and 5 wt% of styrene-butadiene rubber (the kind of low-cis polybutadiene and styrene-butadiene rubber were the same as in example 1).
The resulting polystyrene material was tested and the results are shown in table 1.
Comparative example 3
Comparative example 3 is set up essentially the same as example 1, except that the toughening rubber used consists of 100 wt% low-cis polybutadiene (the type of low-cis polybutadiene is the same as example 1).
The resulting polystyrene material was tested and the results are shown in table 1.
Comparative example 4
Comparative example 4 was set to be substantially the same as example 1 except that the toughened rubber used was composed of 100 wt% of styrene-butadiene rubber (the kind of styrene-butadiene rubber was the same as example 1).
The resulting polystyrene material was tested and the results are shown in table 1.
TABLE 1
It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not constitute any limitation to the present invention. The present invention has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. The invention can be modified, as prescribed, within the scope of the claims and without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.
Claims (10)
1. A raw material composition for preparing an impact polystyrene material comprises the following components in percentage by mass:
wherein the toughened rubber comprises 88-92% of low cis-polybutadiene and 8-12% of styrene butadiene rubber in mass fraction.
2. The feedstock composition of claim 1, wherein the low-cis polybutadiene has a mooney viscosity of 45 to 55, and/or a 5% styrene solution viscosity of 150 to 190; and/or the styrene-butadiene rubber contains structural units derived from styrene in an amount of 60 to 85 mol%.
3. A preparation method of an impact polystyrene material comprises the following steps:
s1, carrying out preheating treatment on the raw material composition of claim 1 or 2 to obtain a first mixed material;
s2, carrying out a first pre-polymerization reaction on the first mixed material to obtain a second mixed material;
s3, carrying out a second pre-polymerization reaction on the second mixed material to obtain a third mixed material;
s4, carrying out a first polymerization reaction on the third mixed material to obtain a fourth mixed material;
s5, carrying out a second polymerization reaction on the fourth mixed material to obtain a fifth mixed material containing a polystyrene material; and
optionally, S6, performing devolatilization treatment on the fifth mixed material to obtain the polystyrene material.
4. The method according to claim 3, wherein the temperature of the preheating treatment in step S1 is 60 ℃ to 80 ℃, preferably 65 ℃ to 75 ℃; and/or the time of the preheating treatment is 1min to 45min, preferably 15min to 25 min.
5. The method according to claim 3 or 4, wherein the temperature of the first prepolymerization reaction in step S2 is 75-85 ℃, preferably 77-83 ℃; and/or the time of the first prepolymerization reaction is 1-45 min, preferably 15-25 min; preferably, the first prepolymerization reaction is carried out under the condition of stirring, and the stirring speed is 200 r/min-250 r/min.
6. The method according to any one of claims 3 to 5, wherein the temperature of the second prepolymerization reaction in step S3 is 85 ℃ to 95 ℃, preferably 87 ℃ to 93 ℃; and/or the time of the second prepolymerization reaction is 1-45 min, preferably 15-25 min; preferably, the second prepolymerization reaction is carried out under the condition of stirring, and the stirring speed is 100 r/min-150 r/min.
7. The method according to any one of claims 3 to 6, wherein the temperature of the first polymerization reaction in step S4 is 120 ℃ to 130 ℃, preferably 122 ℃ to 128 ℃; and/or the time of the first polymerization reaction is 10min to 80min, preferably 50min to 70 min; preferably, the first polymerization reaction is carried out under the condition of stirring, and the stirring speed is 50 r/min-100 r/min.
8. The method according to any one of claims 3 to 7, wherein the temperature of the second polymerization reaction is 130 ℃ to 140 ℃, preferably 132 ℃ to 138 ℃ in step S5; and/or the time of the second polymerization reaction is 10min to 80min, preferably 50min to 70 min; preferably, the second polymerization reaction is carried out under the condition of stirring, and the stirring speed is 30 r/min-70 r/min.
9. The production method according to any one of claims 3 to 8, wherein in step S6, the pressure of the devolatilization process is from-10 KPa to 0KPa, preferably from-8 KPa to-2 KPa; and/or the temperature of the devolatilization treatment is 230 ℃ to 250 ℃, preferably 235 ℃ to 245 ℃; and/or the time of the devolatilization treatment is from 10min to 90min, preferably from 70min to 85 min.
10. An impact polystyrene material prepared starting from the starting composition according to claim 1 or 2 or prepared according to the preparation process according to any one of claims 3 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011186032.7A CN114426648A (en) | 2020-10-29 | 2020-10-29 | Raw material composition and method for preparing impact-resistant polystyrene material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011186032.7A CN114426648A (en) | 2020-10-29 | 2020-10-29 | Raw material composition and method for preparing impact-resistant polystyrene material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114426648A true CN114426648A (en) | 2022-05-03 |
Family
ID=81309064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011186032.7A Pending CN114426648A (en) | 2020-10-29 | 2020-10-29 | Raw material composition and method for preparing impact-resistant polystyrene material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114426648A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050030004A (en) * | 2003-09-24 | 2005-03-29 | 제일모직주식회사 | Continous polymerization process of rubber-modified styrenic resin with super high impact property |
| CN101613440A (en) * | 2009-08-06 | 2009-12-30 | 上海赛科石油化工有限责任公司 | A kind of high impact high gloss bimodal polystyrene material and preparation method thereof |
| CN110746544A (en) * | 2019-11-20 | 2020-02-04 | 上海赛科石油化工有限责任公司 | High-gloss high-impact polystyrene material and preparation method thereof |
-
2020
- 2020-10-29 CN CN202011186032.7A patent/CN114426648A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050030004A (en) * | 2003-09-24 | 2005-03-29 | 제일모직주식회사 | Continous polymerization process of rubber-modified styrenic resin with super high impact property |
| CN101613440A (en) * | 2009-08-06 | 2009-12-30 | 上海赛科石油化工有限责任公司 | A kind of high impact high gloss bimodal polystyrene material and preparation method thereof |
| CN110746544A (en) * | 2019-11-20 | 2020-02-04 | 上海赛科石油化工有限责任公司 | High-gloss high-impact polystyrene material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4774287A (en) | Heat-resistant copolymer of alpha-methylstyrene and acrylonitrile, process for preparing the same, and thermoplastic resin composition containing the same | |
| EP1740632B1 (en) | Improved mass polymerized rubber-modified monovinylidene aromatic copolymer composition | |
| EP1943306B1 (en) | Low temperature initiators for improving the rubber phase volume of hips formulations | |
| CN110746544B (en) | High-gloss high-impact polystyrene material and preparation method thereof | |
| CN112794952A (en) | High-gloss high-impact-resistance low-residue monomeric polystyrene and preparation method thereof | |
| EP1244721A1 (en) | Monovinylidene aromatic polymers with improved properties and a process for their preparation | |
| CN114426648A (en) | Raw material composition and method for preparing impact-resistant polystyrene material | |
| AU2001259683B2 (en) | Monovinylidene aromatic polymers with improved toughness and rigidity and a process for their preparation | |
| CN114426647A (en) | Production process of high-glossiness impact-resistant polystyrene material | |
| AU2001259683A1 (en) | Monovinylidene aromatic polymers with improved toughness and rigidity and a process for their preparation | |
| JP2006528713A (en) | Styrenic resin composition and articles produced therefrom | |
| WO2021122694A1 (en) | Dual initiator grafting process of polybutadiene latex by styrene/acrylonitrile | |
| US20060142487A1 (en) | Process for the production of a transparent rubber-modified monovinylidene aromatic resin | |
| US5432219A (en) | Styrenic resin composition for extrusion | |
| JP3939036B2 (en) | Novel rubbery polymer composition and impact-resistant styrenic resin composition | |
| JPH05331245A (en) | Production of rubber-modified copolymer resin and rubber-modified copolymer resin composition | |
| CN101367902B (en) | High heat-resistant crushing-resistant copolymerization composition and continuous preparation method | |
| JPS62290707A (en) | Production of polystyrene | |
| KR20030051990A (en) | Styrenic Thermoplastic Resin Composition with High Melt Strength | |
| CN109320890B (en) | Rubber-modified styrene resin composition, process for producing the same, and molded article | |
| JPH10158347A (en) | Rubber-modified aromatic vinyl-based resin composition | |
| CN116082572A (en) | High impact polystyrene resin and preparation method and application thereof | |
| CN106867127B (en) | Thermoplastic resin composition suitable for vacuum forming and formed product thereof | |
| JP2004339357A (en) | Transparent rubber-modified polystyrene resin | |
| KR100763954B1 (en) | Continuous Polymerization Process of High Impact Polystyrene Resin with High Environmental Stress Crack Resistant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |