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Toughening modifying method for polyphenyl ether/nylon 6 alloy

A technology of toughening modification and polyphenylene ether, which is applied in the field of toughening modification of polyphenylene ether/nylon 6 alloy, which can solve the problems of poor mechanical properties and impact resistance, and achieve improved compatibility and excellent compatibilization effect Effect

Inactive Publication Date: 2008-07-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The present invention aims at the problems of severe phase separation of polyphenylene ether / nylon 6 and poor mechanical properties, especially poor impact resistance, and adopts polyphenylene ether grafted maleic anhydride as a compatibilizer, styrene-(ethylene-butylene)-styrene A melt blend of block copolymer grafted with maleic anhydride and polyamide-based elastomer was used as a toughening agent, and a polyphenylene ether / nylon 6 alloy modified material with excellent toughness was prepared by melt extrusion process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0019] 1. Mix 100 parts of polyphenylene ether, 2 parts of maleic anhydride and 0.2 parts of cumene peroxide evenly at 60°C, and then add them into a twin-screw extruder for melt grafting reaction at a temperature of 180-280°C , the screw speed is 150 rpm, and the obtained polyphenylene ether is grafted with maleic anhydride.

[0020] 2. Mix 75 parts of styrene-(ethylene-butylene)-styrene block copolymer grafted maleic anhydride and 25 parts of polyamide elastomers evenly and add them into the twin-screw extruder at a temperature of 160-220 ℃, the screw speed is 100 rev / min, and the melt blend of styrene-(ethylene-butylene)-styrene block copolymer grafted with maleic anhydride and polyamide elastomer is obtained.

[0021] 3. according to table 1 formula with polyphenylene ether graft maleic anhydride, styrene-(ethylene-butylene)-styrene block copolymer graft maleic anhydride and polyamide elastomer melt blend, polyphenylene ether Ether, nylon 6, and nylon 6 are pre-dried at 8...

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Abstract

The invention discloses a toughening modifying method of polyphenylether / nylon 6 alloy. The polyphenylether grafted maleic anhydride is taken as the compatibilizer, which is made by melting grafted method. The mixture of the segmented copolymer of styrene- (ethylene-butylene)-styrene grafted maleic anhydride and the daiamidelastic body is taken as the toughener. The two above are mixed with the polyphenylether and nylon 6 in melting state and the polyphenylether / nylon 6 alloy can be obtained. The notch impact strength of the modified material can reach 1065 J / m, the elongation at break can reach 177 percent, the tensile strength can reach 43 MPa, the bending strength can reach 66.1 MPa and the flexural modulus can reach 1641 MPa.

Description

technical field [0001] The invention relates to a toughening modification method of a polymer alloy, in particular to a toughening modification method of a polyphenylene ether / nylon 6 alloy. Background technique [0002] Since A.S.Hay first used the oxidative coupling method in 1957 to obtain high-yield, high-molecular-weight poly(2,6-dimethyl-1,4-phenylene ether), that is, polyphenylene ether, the polyphenylene ether industry has developed rapidly. . In particular, GE successfully developed the first generation of polyphenylene ether modified products in 1966, and the trade name was Nory1, which greatly accelerated the application and research of polyphenylene ether. So far, polyphenylene ether and modified polyphenylene ether have become the fourth largest thermoplastic engineering plastics after polyamide, polycarbonate and polyoxymethylene. Unmodified polyphenylene ether has good mechanical properties and electrical insulation properties; excellent heat resistance (Tg ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/08C08F283/08C08F287/00
Inventor 李波吉继亮苏妤万超瑛张勇张隐西
Owner SHANGHAI JIAO TONG UNIV
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