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Preparation of high impact resistance polystyrene from waste rubber fine rubber powder by in situ polymerization

A technology of polystyrene and high impact resistance, which is applied in the field of preparing impact-resistant polystyrene, can solve the problems of poor impact resistance, achieve stable performance, increase the percentage content, and improve the effect of initiation efficiency

Inactive Publication Date: 2009-08-05
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rigid structure of polystyrene determines that it has the characteristics of poor impact resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of modified rubber powder A:

[0018] Wrap the 120 mesh rubber powder with a filter cloth and place it in a quick extractor. Use a 1:1 mixed solvent of benzene and isopropanol to extract at 100°C for 12 hours. Take out the rubber of the filter cloth. Drying the powder; irradiate the dried rubber powder with 450W microwave for 5 minutes, add styrene containing 0.01% benzoyl peroxide by mass equal to the rubber powder, and soak the rubber powder for 4 hours to complete the styrene Penetrate into the rubber powder to obtain modified rubber powder A.

Embodiment 2

[0020] Preparation of modified rubber powder B:

[0021] Wrap the 120 mesh rubber powder with a filter cloth and place it in a quick extractor. Use a 1:1 mixed solvent of benzene and isopropanol to extract at 100°C for 12 hours. Take out the rubber of the filter cloth. Dry powder; irradiate the dried rubber powder with 450W microwave for 5 minutes, add styrene with a mass ratio of 0.01% benzoyl peroxide to the rubber powder with a mass ratio of 1.5:1, and soak the rubber powder for 4 hours. The styrene is completely penetrated into the rubber powder, and the modified rubber powder B is obtained.

Embodiment 3

[0023] Preparation of modified rubber powder C:

[0024] Wrap 100 mesh rubber powder with a filter cloth and place it in a rapid extraction device. Use a 1:1 mixed solvent of benzene and isopropanol to extract at 100°C for 12 hours. Take out the rubber of the filter cloth. Drying the powder; irradiate the dried rubber powder with 700W microwave for 3 minutes, add styrene with 0.01% benzoyl peroxide by mass equal to the rubber powder, soak the rubber powder for 4 hours to make the styrene completely Penetrate into the rubber powder to obtain modified rubber powder C.

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Abstract

The invention provides a high impact resistant polystyrene made of fine rubber powder of waste rubber by the method of in-situ polymerization. The high impact resistant polystyrene contains 67.5-40.5 percent of polystyrene by weight and 27.1-54.1 percent of modified waste rubber fine rubber powder. The invention has simple preparation technology, low cost, good impact resistant property of over 71.1J / m and good tensile property of over 21.2MPa..

Description

Technical field: [0001] The invention relates to a technology for preparing impact-resistant polystyrene by using waste rubber fine rubber powder. That is, the waste rubber fine rubber powder / polystyrene material with high impact resistance is prepared by the in-situ polymerization method. Background technique: [0002] Polystyrene (PS) is a general-purpose thermoplastic resin with the characteristics of rigidity, good rigidity, dimensional stability, and good electrical insulation. It is widely used in packaging materials, building materials, electrical appliances, furniture, toys and other fields. However, the rigid structure of polystyrene determines its poor impact resistance. In order to improve the brittleness of polystyrene, as early as the 1950s, there was a method of using rubber to produce modified polystyrene, that is, using the flexibility of rubber to reduce the brittleness of polystyrene, increase its toughness, and improve its impact strength. . The rubber modifica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/02C08F112/08
Inventor 马斐夏峥嵘陈红祥曾丹林陈昌青
Owner CHINA NAT OFFSHORE OIL CORP
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