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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

Active Publication Date: 2019-11-15
深圳市高科塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many patent documents mention the use of flat glass fiber to solve the problem of low warpage of materials. Polyester modification also mentions the use of low crystallization PET and flat glass fiber to solve low warpage, but the price of flat glass fiber is too high. high production cost

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The following raw materials are selected in parts by weight: 30 parts of PET resin, 20 parts of PBT resin (KH2083), 2 parts of toughening agent AX8900, 13 parts of flame retardant, 0.4 part of antioxidant, 0.6 part of lubricant, filling 3 parts of the agent, 1 part of the nucleating agent, mixed in a medium-speed mixer for 5 minutes, 30 parts of glass fiber T635B (added at the glass fiber port), extruded through a twin-screw extruder with a melting temperature of 240-270 ° C, and pelletized. Among them, the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 270°C, the temperature of the fourth zone is 270°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 260°C, and the temperature of the seventh zone is 260°C. The temperature in zone 250°C, the temperature in zone 8 is 240°C, the temperature...

Embodiment 2

[0040] Select the following raw materials in parts by weight: 25 parts of PET resin, 25 parts of PBT resin (KH2083), 2 parts of toughening agent AX8900, 13 parts of flame retardant, 0.4 part of antioxidant, 0.6 part of lubricant, and fill 3 parts of the agent, 1 part of the nucleating agent, mixed in a medium-speed mixer for 5 minutes, 30 parts of glass fiber T635B (added at the glass fiber port), extruded through a twin-screw extruder with a melting temperature of 240-270 ° C, and pelletized. Among them, the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 270°C, the temperature of the fourth zone is 270°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 260°C, and the temperature of the seventh zone is 260°C. The temperature in zone 250°C, the temperature in zone 8 is 240°C, the temperature in z...

Embodiment 3

[0042] Select the following raw materials in parts by weight: 20 parts of PET resin, 30 parts of PBT resin (KH2083), 2 parts of toughening agent AX8900, 13 parts of flame retardant, 0.4 part of antioxidant, 0.6 part of lubricant, and fill 3 parts of the agent, 1 part of the nucleating agent, mixed in a medium-speed mixer for 5 minutes, 30 parts of glass fiber T635B (added at the glass fiber port), extruded through a twin-screw extruder with a melting temperature of 240-270 ° C, and pelletized. Among them, the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 270°C, the temperature of the fourth zone is 270°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 260°C, and the temperature of the seventh zone is 260°C. The temperature in zone 250°C, the temperature in zone 8 is 240°C, the temperature in z...

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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.

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

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Application Information

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IPC IPC(8): C08L67/02C08L23/08C08L63/00C08L83/04C08K7/14C08K3/24C08K5/20C08K5/526C08K3/34C08K3/30C08K13/04
CPCC08K2003/3045C08L67/02C08L2201/02C08L2201/08C08L2205/025C08L2205/035C08L2205/24C08L23/0869C08L63/00C08L83/04C08K7/14C08K3/24C08K5/20C08K5/526C08K3/34C08K3/30C08K13/04
Inventor 苏健新苏志军周乾桃廖乾明郭丽
Owner 深圳市高科塑化有限公司
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