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Grafted polypheylene ether resin and preparation method thereof

A technology of polyphenylene ether resin and mixed resin, applied in the field of polyphenylene ether resin, can solve the problems of poor mechanical properties and easy cross-linking of polyphenylene ether resin, achieve improved tensile strength, uniform concentration distribution, and avoid monomer uniformity. The effect of poly and polyphenylene ether crosslinking reaction

Active Publication Date: 2012-06-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the molecular chains of polyphenylene ether resins are easy to cross-link, monomers are prone to homopolymerization and the mechanical properties of grafted polyphenylene ether resins are poor, a grafted polyphenylene ether resin and its Preparation

Method used

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  • Grafted polypheylene ether resin and preparation method thereof

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Embodiment 1

[0029] (1) Be the poly-2,6-dimethyl-1,4-phenylene ether that intrinsic viscosity is 38ml / g, under air atmosphere, carry out pre-irradiation with β ray on electron accelerator device, pre-irradiation dose is 10kGy to obtain pre-irradiated poly 2,6-dimethyl-1,4-phenylene ether;

[0030] (2) 85 parts by mass of the poly-2,6-dimethyl-1,4-phenylene ether resin obtained in step (1) and poly-2,6-dimethyl-1,4-phenylene ether 15 parts of resin mass parts are added in the high-speed mixer together, mix, obtain mixed resin;

[0031] (3) The mixed resin obtained in step (2) is added in the main hopper of the Haake reaction type twin-screw extruder, and the mass parts are 10 parts of acrylic acid and 2 parts of p-benzoquinone through the Haake reaction type twin-screw extruder The liquid feeding port of machine is injected, carries out reactive extruding grafting, and the screw rod diameter of described Haake reactive type twin-screw extruder is 24mm, and length-to-diameter ratio is 40, a...

Embodiment 2

[0039] (1) The poly 2,6-dimethyl-1,4-phenylene ether resin that intrinsic viscosity is 42ml / g, under air atmosphere, carries out pre-irradiation with β ray on electron accelerator device, pre-irradiation dose 40kGy to obtain pre-irradiated poly-2,6-dimethyl-1,4-phenylene ether;

[0040] (2) 65 parts by mass of the poly-2,6-dimethyl-1,4-phenylene ether resin obtained in step (1) and poly-2,6-dimethyl-1,4-phenylene ether 35 parts of resin mass parts are added in the high-speed mixer together, mix, obtain mixed resin;

[0041](3) Add the mixed resin obtained in step (2) into the main hopper of the SHJ-30 reactive twin-screw extruder, and the temperature of each section from the feeding port to the die is 200, 220, 240, 260, 270, 280, 280, 285, 285, 290, 280°C, speed 75 rpm, inject 0.5 parts by mass of acrylic acid and 0.05 parts of triphenyl phosphate through the liquid feeding port of SHJ-30 reactive twin-screw extruder , carry out reactive extrusion grafting, and the reaction...

Embodiment 3

[0046] (1) Poly 2,6-dimethyl-1,4-phenylene ether resin with an intrinsic viscosity of 40ml / g is pre-irradiated with β-rays on an electron accelerator device under an air atmosphere, and the pre-irradiation The dose is 30kGy to obtain pre-irradiated poly-2,6-dimethyl-1,4-phenylene ether;

[0047] (2) 75 parts by mass of the pre-irradiated poly-2,6-dimethyl-1,4-phenylene ether resin obtained in step (1) and poly-2,6-dimethyl-1,4-phenylene ether resin 25 parts by mass are added together in a high-speed mixer and mixed to obtain a mixed resin;

[0048] (3) Add the mixed resin obtained in step (2) into the main hopper of the SHJ-30 reactive twin-screw extruder, and the temperature of each section from the feeding port to the die is 200, 230, 250, 270, 270, 280, 285, 285, 285, 290, 280°C, speed 120 rev / min, put 5 parts by mass of acrylic acid and 1 part by mass of triphenyl phosphate through the liquid of SHJ-30 reactive twin-screw extruder The feeding port is injected to carry ou...

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Abstract

The invention relates to a grafted polyphenylene ether resin and a preparation method thereof, and belongs to the field of a polyphenylene ether resin. In the prior art, the chains of the polyphenylene ether molecules are easy to cross-link, the monomer is easily subjected to homopolymerization, and the mechanical property of the grafted polyphenylene ether resin is poor. The purpose of the present invention is to solve the problems in the prior art. The preparation method comprises: adopting beta rays or gamma rays to carry out pre-irradiation on the polyphenylene ether resin; mixing the pre-irradiated polyphenylene ether resin and the polyphenylene ether resin, and adding the resulting mixture to a reaction type double screw extruder; adding a graft monomer and an electron donor from a liquid feeding port of the reaction type double screw extruder to carry out reactive extrusion grafting to obtain the grafted polyphenylene ether resin. The water contact angle of the grafted polyphenylene ether resin prepared by the method is in the range of 50.6-82.6 DEG C, and the tensile strength of the grafted polyphenylene ether resin / polyamide 6 blending alloy can be 71.4 Mpa.

Description

technical field [0001] The invention belongs to the field of polyphenylene ether resins, in particular to a grafted polyphenylene ether resin and a preparation method thereof. Background technique [0002] Polyphenylene ether is a thermoplastic engineering plastic with excellent comprehensive properties. Because of its excellent high and low temperature resistance, good mechanical properties, fatigue resistance, low water absorption, good dimensional stability, and high creep resistance, it is used Wide temperature range, outstanding water and steam resistance, good flame retardancy and other advantages are widely used in electrical and electronic, automotive, office equipment and other fields. However, because polyphenylene ether products are prone to stress cracking, and the melt fluidity is poor, molding processing is difficult, and the price is high, all of which greatly limit the application range of polyphenylene ether. [0003] In order to overcome the above shortcom...

Claims

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Application Information

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IPC IPC(8): C08F283/08C08F220/06C08F2/46C08L51/08C08L71/12C08L77/02
Inventor 姚占海李文斐谢磊孟玥袁悦
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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