A kind of preparation method and application of EPDM graft copolymer

A technology of EPDM rubber and graft copolymer is applied in the field of preparation of graft copolymer to achieve the effects of improving the conversion rate of monomers, stabilizing the polymerization reaction process and improving compatibility.

Active Publication Date: 2011-12-14
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, EPDM-g-MAN is prepared by graft copolymerization of EPDM, MMA and AN, and it is blended with SAN resin to prepare high-impact engineering plastic AEMS such as weathering and yellowing resistance.

Method used

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  • A kind of preparation method and application of EPDM graft copolymer
  • A kind of preparation method and application of EPDM graft copolymer
  • A kind of preparation method and application of EPDM graft copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 provides the impact of the different ratios of AN / MMA on the CR, GR and GE of the product EPDM-g-MAN and the impact strength of the AEMS notch, wherein the reaction formula is as shown in Table 1, the reaction product EPDM-g-MAN and The performance of AEMS is shown in Table 2.

Embodiment 2

[0036] Embodiment 2 provides the impact of the different mass ratios of EPDM and graft monomer (MMA-AN) on the CR, GR and GE of product EPDM-g-MAN and the impact strength of AEMS notch, wherein the reaction formula is as shown in table 3, The properties of the reaction products EPDM-g-MAN and AEMS are shown in Table 4.

Embodiment 3

[0037] Embodiment 3 provides the impact of the different dosages of BPO on the CR, GR and GE of the product EPDM-g-MAN and the notched impact strength of AEMS, wherein the reaction formula is as shown in Table 5, and the performance of the reaction product EPDM-g-MAN and AEMS As shown in Table 6.

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Abstract

The invention discloses a preparation method of EPDM graft copolymer and its application in preparing engineering plastics. In the method, EPDM rubber is used as a graft base, and methyl methacrylate and acrylonitrile are used as The grafted monomer is prepared by the suspension method of graft copolymerization to prepare the ethylene-propylene rubber graft copolymer. The graft copolymer is melt-blended with the SAN resin to prepare a weather-aging and yellowing resistance with excellent performance and high gloss. High impact engineering plastics. The present invention adopts the continuous stirring suspension graft copolymerization method, so that the whole polymerization reaction system is a stable aqueous phase suspension polymerization system, so as to form a uniformly distributed graft chain on the EPDM molecular chain. The invention has less solvent consumption, high monomer concentration, and monomer conversion rate as high as 90-99.0%, the product does not need to be recovered by methanol or ethanol precipitation, and the organic solvent and residual monomer are easy to be recovered and recycled, thereby simplifying the post-processing procedure, and significantly Reduce investment and production costs for post-processing equipment for products and solvents.

Description

technical field [0001] The invention relates to a preparation method of a graft copolymer, in particular to a preparation method of a EPDM graft copolymer and an application thereof. Background technique [0002] AES is a new type of modified engineering plastic that has appeared in recent years. It is a graft copolymer (EPDM-g-SAN) of ethylene-propylene-diene rubber (EPDM), styrene and acrylonitrile (St-AN) and SAN resin (styrene and A blend of acrylonitrile copolymer), due to the low content of double bonds in the molecular chain of EPDM, AES has excellent ozone aging resistance, weather aging resistance and aging yellowing resistance, and is suitable for the manufacture of automobiles, motorcycle parts, doors and windows and Simple housing superstructure, etc., consumption is increasing. [0003] Since St is a non-polar monomer and acrylonitrile (AN) is a polar monomer, it is necessary to increase the amount of AN in the St-AN comonomer in order to obtain a good compatib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/06C08F2/20
Inventor 王炼石刘伟涛蔡彤旻张安强曾祥斌付锦锋朱勇平吴敌
Owner KINGFA SCI & TECH CO LTD
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