Polyphenyl ether / polystyrene blending alloy material and preparation method thereof

Abstract

Belonging to the technical field of high-molecular material, the invention discloses a polyphenyl ether / polystyrene blending alloy material and a preparation method thereof. The alloy material comprises the following components by weight: 20-45 parts of polyphenylene ether, 25-40 parts of polystyrene, 10-30 parts of glass fiber, 10-30 parts of an inorganic filler, 0.3-1 part of a coupling agent, 0.1-0.3 part of a light stabilizer, 0.2-0.8 part of a lubricant, 0.2-0.5 part of an antioxidant and 1-8 part of a compatibilizer. The preparation method is as below: weighing 20-45 parts of polyphenylene ether, 25-40 parts of polystyrene, 10-30 parts of glass fiber, 10-30 parts of the inorganic filler, 0.3-1 part of the coupling agent, 0.1-0.3 part of the light stabilizer, 0.2-0.8 part of the lubricant, 0.2-0.5 part of the antioxidant and 1-8 part of the compatibilizer; mixing the materials uniformly with high speed by a high-speed mixer; adding the mixture into a screw extruder; and extruding, drawing and dicing the mixture by the screw extruder to obtain the product. The product obtained by the invention has the characteristics of excellent extrusion performance and low thermal expansion coefficient value, can be applied to section bar extrusion, and can reduce cost, save energy and realize substitution of aluminium by plastic.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a low thermal expansion coefficient polyphenylene ether / polystyrene (PPO / PS) blended alloy material and a preparation method thereof. Background technique [0002] Polyphenylene oxide (PPO) is a thermoplastic engineering plastic with excellent performance, because it has the following advantages: (1) excellent physical and mechanical properties; (2) excellent heat resistance. The glass transition temperature (Tg) is the highest among thermoplastics, about 210°C, and the melting point is about 260°C. It can work continuously in the range of 160-190°C; (3) Excellent electrical properties. Its dielectric constant and dielectric loss tangent are the smallest among engineering plastics, and are hardly affected by temperature, humidity and frequency; (4) It is flame retardant and self-extinguishing. Its oxygen index is 29%, and its flame retardancy is good; (5) Excellent acid ...

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Problems solved by technology

[0004] In view of the defects such as high thermal expansion coefficient and poor light resistance of PPO / PS alloy, the purpose of the present invention is to provide a low thermal expansion coefficient polyphenylene ether / polystyrene blend alloy material that can be used for extrusion molding. The product has excellent performance, stable size, and the coefficient of thermal expansion is the same as that of aluminum alloy (1.881×10 -5 ~2.360×10 -5 K -1 ) quite advantages such as

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