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Modified high impact resistant polystyrene composite and method for preparing same

A polystyrene and high-impact technology, which is applied in the field of modified low-temperature-resistant high-impact polystyrene composition and its preparation, can solve the problems of high cost, increased cost of production enterprises, and high price, and achieve low production cost. Effect

Active Publication Date: 2011-08-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In CN200510010543.2, use ethylene propylene diene monomer (hereinafter referred to as EPDM) and SBS as the modifier of HIPS low-temperature impact performance, although this method can greatly improve the low-temperature impact performance of HIPS, because the price of EPDM and SBS is very high, lead to an increase in production costs
In addition, GB1498094 uses styrene-butadiene impact copolymer to modify HIPS. In Example 14, the ratio of HIPS and styrene-butadiene impact copolymer is 60:40 (weight ratio), and its Izod normal temperature notched impact strength reaches 22.3KJ / m 2 , although this method can improve its impact performance to a certain extent, but its cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Put 100 parts of dried light calcium carbonate with a moisture content of less than 0.2% into a high-speed mixer, add 1 part of silane coupling agent when heated to 110°C, mix for 10 minutes, discharge the material, and put it in a dryer Cool to room temperature and set aside.

[0037] Replace the pressure-resistant airtight container with high-purity nitrogen, add 400 parts of cyclohexane and 60 parts of styrene, and then add 0.007 parts of butyllithium as an initiator based on the amount of monomer added as 100 parts by mass. The reaction was carried out at high temperature; after 30 minutes of reaction, a mixture of 9.4 parts of styrene and 30.6 parts of butadiene was slowly added for 70 minutes; after 10 minutes of reaction, the reaction was terminated to obtain a linear styrene-butadiene impact copolymer;

[0038]3 parts of light calcium carbonate activated by silane coupling agent, 0.2 part of antioxidant, 0.1 part of ultraviolet light stabilizer, 15 parts of styr...

Embodiment 2

[0040] Put 100 parts of dried talc powder with a water content of less than 0.2% into a high-speed mixer, add 0.5 parts of titanate coupling agent when heated to 100°C, mix for 15 minutes, discharge the material, and cool in a desiccator to room temperature, set aside.

[0041] Replace the pressure-resistant airtight container with high-purity nitrogen, add 300 parts of cyclohexane and 40 parts of styrene, and add 0.008 parts of butyllithium as an initiator based on 100 parts by mass of the monomer, and add 0.008 parts of butyllithium as an initiator. Reaction at high temperature; after 45 minutes of reaction, slowly add a mixture of 15 parts of styrene and 45 parts of butadiene for 100 minutes; after 15 minutes of reaction, terminate the reaction to obtain a linear styrene-butadiene impact copolymer;

[0042] Mix 5 parts of titanate coupling agent activated talcum powder, 0.1 part of antioxidant, 0.2 part of ultraviolet light stabilizer, 34 parts of styrene-butadiene rubber (...

Embodiment 3

[0044] Put 100 parts of dried kaolin with a water content of less than 0.2% into a high-speed mixer, and when heated to 120°C, add 0.8 parts of aluminate coupling agent, mix for 12 minutes, discharge, and cool in a desiccator to room temperature, set aside.

[0045] Replace the pressure-resistant airtight container with high-purity nitrogen, add 400 parts of cyclohexane and 40 parts of styrene, and add 0.007 parts of butyllithium as an initiator based on the amount of monomer added as 100 parts by mass. The reaction was carried out at low temperature; after 60 minutes of reaction, a mixture of 16.2 parts of styrene and 43.8 parts of butadiene was slowly added for 120 minutes; after 20 minutes of reaction, the reaction was terminated to obtain a linear styrene-butadiene impact copolymer.

[0046] 4 parts of wollastonite powder activated by aluminate coupling agent, 0.1 part of antioxidant, 0.2 part of ultraviolet light stabilizer, 34 parts of styrene-butadiene rubber (combined ...

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Abstract

The invention relates to a modified high impact resistant polystyrene composite and a method for preparing the same. The composite comprises styrene butadiene rubber, inorganic filling materials, impact resistant copolymer of tetraphene and high impact resistant polystyrene, wherein the structural formula of the impact resistant copolymer of tetraphene is St-(St-Bu); based on 100 percent mass of the impact copolymer of tetraphene, the St serving as a homopolymerisation section of styrene accounts for 40 to 60 percent; the St-Bu serving as random copolymerization sections of styrene and butadiene account for 40 to 60 percent, wherein the styrene unit content of the random copolymerization sections of styrene and butadiene is 6 to 28 percent, and the butadiene unit content of the random copolymerization sections of styrene and butadiene is 72 to 94 percent; and the impact copolymer of tetraphene adopts a linear structure or star-shaped structure. Compared with modified high impact polystyrene composites modified by other modifiers in the prior art, the blended modified high impact polystyrene composite has higher toughness, rigidity, low-temperature impact strength and low production cost.

Description

technical field [0001] The invention relates to a modified low-temperature-resistant high-impact polystyrene composition and a preparation method thereof. Background technique [0002] High-impact polystyrene (hereinafter referred to as HIPS) is actually a modified product of polystyrene, in which rubber particles are dispersed in the polystyrene continuous phase to form rubber-modified polystyrene. The production methods of HIPS include graft copolymerization and mechanical mixing. The blending method is difficult to overcome the dispersion problem due to the high melt viscosity, and the two phases are only combined by weak van der Waals force, the cohesion of the copolymer system is weak, and the performance of the modified material is far inferior to that of the grafted material. Bulk and bulk-suspension graft copolymerization processes. In the graft copolymerization method, due to the limited solubility of rubber in styrene, the mass content of rubber in HIPS after gra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/08C08L9/06C08L25/10C08K9/04B29B7/82B29B9/12B29C47/92B29C48/92
CPCB29C48/9185B29C48/04B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 郭义巩红光谢昕刘永军段宏义杨世元刘义万伟林金鼎铭梁天珍许惠芳王卓妮慕雪梅邓守军魏福庆
Owner PETROCHINA CO LTD