Low-warpage good-appearance high-heat resistance polyester composite material and preparation method thereof

A polyester composite material, high heat resistance technology, applied in the field of polymer material modification, can solve the problems of high price and high production cost of flat glass fiber, and achieve the effect of good appearance, low water absorption, good low warpage
CN110452502AActive Publication Date: 2019-11-15深圳市高科塑化有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
深圳市高科塑化有限公司
Publication Date
2019-11-15

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Abstract

The invention relates to the technical field of polymer material modification, in particular to a low-warpage good-appearance high-heat resistance polyester composite material and a preparation methodthereof. The polyester composite material is composed of the following raw materials: PET resin, PBT resin, glass Fiber, a toughening agent, a heat stabilizer, a lubricant, a nucleating agent, a flame retardant and filler, wherein the nucleating agent is a mixture of LCP, modified montmorillonite, silica and sodium polyacrylate. The low-warpage good-appearance high-heat resistance polyester composite material has a stable shrinkage rate and good processability of injection molding, and has a lower water absorption rate than nylon at the same time, heat aging resistance is achieved, and the composite material has toughness comparable to PA66, chemical corrosion resistance comparable to PPS, can replace expensive PA66 or PPS, has better heat resistance than PBT and PA6, good appearance andlow warpage, and is mainly applied to precision-structure appearance parts and heat-resistant parts of electronic appliances, automobiles and new energy industries.
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Description

technical field

[0001] The invention relates to the technical field of polymer material modification, in particular to a polyester composite material with low warpage, good appearance and high heat resistance and a preparation method thereof. Background technique

[0002] Polyester is one of the five major engineering plastics, including PBT, PET, PCT, PTT and PEN. At present, PET and PBT occupy the main market. Other types of polyester are expensive due to the synthesis of monomers and route technology. Small, and the domestic technical level is limited. PET is a crystalline polymer with high melting temperature (Tm) and glass transition temperature (Tg), which can maintain excellent physical and mechanical properties in a wide temperature range. Its fatigue resistance, Excellent friction resistance, excellent aging resistance, outstanding electrical insulation, stable to most organic solvents and inorganic acids, and low production energy consumption, good processability,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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