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Compound rubber modified styrene series resin composition and preparation method thereof

A styrene resin and rubber modification technology, which is applied in the field of ultrafine powder rubber and cis-butadiene rubber modified styrene resin composition and its preparation field, can solve the problems of particle size control and complex polymerization process, and achieve good The effect of drop impact strength, low hygroscopicity and simple preparation method

Inactive Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, in order to form rubber particles of different particle sizes in the polymer, the particle size control and polymerization process are relatively complicated.

Method used

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  • Compound rubber modified styrene series resin composition and preparation method thereof
  • Compound rubber modified styrene series resin composition and preparation method thereof
  • Compound rubber modified styrene series resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of styrene-butadiene rubber powder:

[0035] Commercially available styrene-butadiene latex (produced by Yanshan Petrochemical, brand: XSBRL-54B1) with a solid content of 50wt% was placed in a container, and 75 g of acrylic acid isooctanoic acid was added dropwise under stirring. The cobalt source was irradiated with a dose of 2.5Mrad and a dose rate of 50Gy / min. The irradiated latex is spray-dried by a spray dryer, the inlet temperature of the spray dryer is 140°C to 160°C, and the outlet temperature is 40°C to 60°C, and the dried carboxylated styrene-butadiene rubber powder is collected in a cyclone separator to obtain Free flowing fully vulcanized styrene butadiene rubber powder. The measured average particle diameter of the powdered rubber is about 150nm, the gel content is 92.6%, and the swelling index is 7.6.

[0036] 2. Preparation of polystyrene composition:

[0037] 11.7g of the styrene-butadiene rubber powder obtained above, low-cis polybutad...

Embodiment 2

[0042] Add mineral oil (63#, produced by Yanshan Petrochemical) to the styrene-butadiene rubber powder prepared in Example 1 according to the ratio of mineral oil: powder rubber = 0.2: 1, stir evenly with a mixer, leave it for 24 hours to fully absorb, take the oil-extended After the rubber 14.6g, other conditions are identical with embodiment 1. The physical property analysis of the obtained final composition is listed in Table 1.

Embodiment 3

[0044] Add mineral oil (63#, produced by Yanshan Petrochemical) to the styrene-butadiene rubber powder prepared in Example 1 according to the ratio of mineral oil: powder rubber = 0.5: 1, stir evenly with a mixer, leave it for 24 hours to fully absorb, take the oil-extended After the rubber 17.6g, other conditions are identical with embodiment 1. The physical property analysis of the obtained final composition is listed in Table 1.

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Abstract

The invention discloses a rubber modified styrene series resin composition. The total content of rubber is 1 to 40 weight percent, and the rubber consists of superfine powder rubber and polybutadiene rubber. The composition is prepared by the following method of: adding styrene series polymer monomer or styrene series polymer monomer and unsaturated monomer, the superfine powder rubber and the polybutadiene rubber into a reaction kettle, stirring the mixture uniformly, and then performing polymerization. The prepared compound rubber modified styrene series composition has the advantages of insulation, easiness in forming and processing, low moisture absorption and the like, and has good tensile strength, cracking resistance and breakdown resistance.

Description

technical field [0001] The present invention relates to a composite rubber modified styrene resin composition and its preparation method, more specifically, the present invention relates to a superfine powder rubber and butadiene rubber modified styrene resin composition and its preparation method. Background technique [0002] Polystyrene (PS) has a wide range of applications in various fields of industry and civil use because of its abundant raw materials, cheap price, easy molding process, low hygroscopicity and good transparency. It is a general-purpose plastic with a large amount of consumption. However, due to the internal structure of polystyrene molecular chains, its mechanical properties are lacking, such as insufficient strength, poor toughness, etc., especially showing brittle behavior. This largely limits its scope of application. [0003] The traditional rubber-toughened polystyrene method mostly adopts butadiene rubber to be dissolved in styrene monomer to ca...

Claims

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Application Information

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IPC IPC(8): C08F279/02C08F2/02C08F2/06
Inventor 王洪涛史新波斯维张晓尘
Owner CHINA PETROLEUM & CHEM CORP
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