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Method for preparing ABS resin used for PVC soft sheet material

A technology of ABS resin and sheet, which is applied in the field of ABS resin preparation, can solve the problems of low opacity, failure to meet the requirements, and insufficient heat resistance, etc., so as to improve heat resistance and good mold release Effect of Stiffness and Pattern Retention

Active Publication Date: 2008-02-20
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the toughness of the resulting composition is not enough to meet the requirements of producing a flexible sheet that withstands severe stress and when blended with PVC and plasticizers to improve the heat resistance and stiffness of the blend
[0007] CN02818199.9 adopts the combination of at least two special graft rubbers produced by emulsion polymerization and at least one graft polymer produced by solution, bulk or suspension polymerization to obtain very good toughness, good processability, adjustable Products with comprehensive properties such as surface gloss, good inherent color and low opacity, but still cannot meet the requirements of the automotive industry for PVC / ABS soft sheets

Method used

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  • Method for preparing ABS resin used for PVC soft sheet material
  • Method for preparing ABS resin used for PVC soft sheet material
  • Method for preparing ABS resin used for PVC soft sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Synthesis of Rubber Latex A

[0044] Weigh 300 parts by weight of emulsifier, 1 part by weight of molecular weight modifier, 32 parts by weight of initiator solution, and 100 parts by weight of butadiene monomer in the reaction kettle, seal the reaction kettle and heat it up to 65 °C, and react for 18 hours , heated up to 70°C, reacted for 2 hours, after the reaction was complete, lowered the temperature and added 1 part by weight of a terminator, and discharged to obtain rubber latex A. The solid content is 30%, the average particle size is 70nm, and the distribution is bimodal.

[0045] Synthesis of Rubber Latex B

[0046] Weigh 150 parts by weight of emulsifier, 1 part by weight of molecular weight regulator, 32 parts by weight of initiator solution, and 100 parts by weight of butadiene monomer in the reaction kettle, and the temperature of the reaction kettle is raised to 65 ° C. After 14 hours of reaction, the temperature is raised to 69°C, react for 8 hours, the...

Embodiment 2

[0055] Except that the ratio of the rubber latex A and B used for grafting is 50 / 50, all other are the same as embodiment 1.

Embodiment 3

[0057] Except that the ratio of the rubber latex A and B used for grafting is 40 / 60, all other are the same as embodiment 1.

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Abstract

The invention provides a preparation method of ABS resin of PVC flexible sheet relating to a preparation method of the ABS resin that is used in the PVC flexible sheet and can promote the heat resistance and shape enduring performance thereof. The invention is prepared after graft polymerization of polybutadiene rubber latex and acrylonitrile monomer and goes through emulsion breaking, dehydration and drying by a coacervation technique. The polybutadiene rubber latex consists of polybutadiene rubber latex A and polybutadiene rubber latex B based on a proportioning rate by weight of 20 / 80-70 / 30, wherein, the average grain diameter of the polybutadiene rubber latex A is 50-200nm and the average grain diameter of the polybutadiene rubber latex B is 250-400nm, at least one of the polybutadiene rubber latex A and the polybutadiene rubber latex B has two-humped or triple-humped grain fineness distribution, a ratio by weight of 40 / 60-60 / 40 of the polybutadiene rubber latex A and the polybutadiene rubber latex B is firstly preferred, the gel content of the rubber latex A is 70 percent -98 percent and the gel content of the rubber latex B is 50 percent -90 percent. The heat resistance and shape enduring performance of the mixing flexible sheet is promoted and good demould shape enduring performance and decorative design retentivity of the products are achieved after the prepared ABS graft polymer is mixed with the PVC and plasticizer in traditional mixing equipment.

Description

technical field [0001] The invention relates to an improved preparation method of ABS resin, in particular to a preparation method of ABS resin which is used for PVC soft sheet and can improve the heat resistance and stiffness of PVC soft sheet. Background technique [0002] ABS resin is a large variety of engineering plastics with excellent comprehensive properties. It has the advantages of impact resistance, high rigidity, chemical corrosion resistance, excellent mechanical strength and electrical properties, easy molding and coloring, dimensional stability and surface gloss. , are widely used in machinery, automobiles, electronics, household appliances, instrumentation and construction industries. [0003] Non-specific ABS products with higher toughness and higher surface gloss can be produced using traditional emulsion ABS with a large amount of rubber, or ABS products with lower surface gloss, such as by using solution or bulk polymerization. It is impossible for these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/04C08L27/06
Inventor 张明耀刘立红王硕刘哲徐弘高延成盛光胡慧林李金鹰郭阳张春英
Owner BC P INC CHINA NAT PETROLEUM CORP
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