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PBT composite material having high heat resistance and high gloss for vehicle mirror and method for preparing same

一种复合材料、反射镜的技术，应用在PBT复合材料领域，能够解决灯体变形、影响车灯安全使用等问题，达到出色耐热性、良好表面光泽性、改善结晶性和成型加工性的效果

Active Publication Date: 2020-07-03
NANYA PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The material used to make car lights, in order to avoid the short-term temperature of the car lights exceeding 120 degrees due to frequent use, resulting in deformation of the lamp body and affecting the safe use of car lights, the existing The technology adopts PC and PC / ABS materials to manufacture car lights

Method used

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  • PBT composite material having high heat resistance and high gloss for vehicle mirror and method for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The high heat-resistant and high-gloss PBT composite material for the vehicle lamp reflector of the present embodiment is made of the following raw materials in parts by weight:

[0042] PBT 89wt%, PET 5wt%, calcium silicate 5wt%, antioxidant 0.3wt%, flow aid 0.5wt% and nucleating agent 0.2wt%.

[0043] Its preparation method is as follows:

[0044] Weigh the above-mentioned raw materials in parts by weight, mix PBT, PET, antioxidant, flow aid and nucleating agent in proportion, put them into a high-speed mixer, stir for 10 minutes, and put them into the main feed hopper of the extruder. The calcium silicate is put into the hopper on the side of the extruder, and then extruded through the twin-screw extruder for granulation. The temperature of the twin screw of the extruder is divided into five sections: the temperature of the first zone is 210°C, the temperature of the second zone is 240°C, the temperature of the third zone is 250°C, the temperature of the fourth zone...

Embodiment 2

[0046] The high heat-resistant and high-gloss PBT composite material for the vehicle lamp reflector of the present embodiment is made of the following raw materials in parts by weight:

[0047] PBT 78.8wt%, PET 10wt%, calcium silicate 10wt%, antioxidant 0.3wt%, flow aid 0.5wt% and nucleating agent 0.4wt%.

[0048] Its preparation method is as follows:

[0049] Weigh the above raw materials in parts by weight, mix PBT, PET, antioxidant, flow aid and nucleating agent in proportion, put them into a high-speed mixer, stir for 12 minutes, and put them into the main feed hopper of the extruder. The calcium silicate is put into the hopper on the side of the extruder, and then extruded through the twin-screw extruder for granulation. The temperature of the twin screw of the extruder is divided into five sections: the temperature of the first zone is 220°C, the temperature of the second zone is 245°C, the temperature of the third zone is 250°C, the temperature of the fourth zone is 25...

Embodiment 3

[0051] The high heat-resistant and high-gloss PBT composite material for the vehicle lamp reflector of the present embodiment is made of the following raw materials in parts by weight:

[0052] PBT 63.1wt%, PET 15wt%, calcium silicate 20wt%, antioxidant 0.3wt%, flow aid 1wt% and nucleating agent 0.6wt%.

[0053] Its preparation method is as follows:

[0054]Weigh the above-mentioned raw materials in parts by weight, mix PBT, PET, antioxidant, flow aid and nucleating agent in proportion, put them into a high-speed mixer, stir for 15 minutes, and put them into the main feed hopper of the extruder. The calcium silicate is put into the hopper on the side of the extruder, and then extruded through the twin-screw extruder for granulation. The twin screw of the extruder is divided into five sections: the temperature of the first zone is 230°C, the temperature of the second zone is 250°C, the temperature of the third zone is 255°C, the temperature of the fourth zone is 255°C, and the...

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Abstract

A PBT composite material having high heat resistance and high gloss for a vehicle mirror and a method for preparing the same are provided. The PBT composite material includes 57.2-88.9 wt % of PBT, 5-20 wt % of PET, 5-20 wt % of calcium silicate, 0-10 wt % of coupling agent-modified talc, 0.1-0.3 wt % of an antioxidant, 0.5-1.5 wt % of a flowing aid and 0.5-1.0 wt % of a nucleating agent. In the preparing method, the above components are placed into an extruding machine to perform a melt plasticization, and a molten material extruded by a die head of the extruding machine is water-cooled and stretched into a stripe to be granulated. The resulting PBT composite material has an excellent heat resistance and a good surface gloss and is suitable for manufacturing a high heat-resistant and highgloss vehicle mirror.

Description

technical field [0001] The invention relates to a high heat-resistant and high-gloss PBT composite material, in particular to a PBT composite material suitable for making a vehicle lamp reflector with high heat-resistant and high gloss. Background technique [0002] The headlight of a car consists of a lamp holder, a bulb, a reflector, a decorative ring and a light distribution mirror. Moreover, vehicle lights are divided into lighting (headlights, fog lights and reversing lights) and signal lights (turn signal lights, warning lights and tail lights). Different lights need to have different degrees of heat resistance, so the selection requirements for materials are also different. Among them, in order to meet the demand for the highest lighting power of headlights and fog lamps, the materials of these two lamps should have high heat resistance, and the reflector of the lamp is the plastic part with the highest heating temperature in the lamp. Must have good heat resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/04C08K9/06C08K3/34C08K5/098
CPCC08L67/02C08L2201/08C08L2205/025C08L2205/24C08L2205/03C08K2201/014C08K2201/003C08K13/06C08K9/06C08K3/34C08K5/098C08K9/04C08G63/183C08J3/12C08J3/203C08J2467/02C08J2367/02B29C48/40B29C48/875B29C48/832B29C48/03C08K5/0016C08K5/005C08K5/0083C08K9/02C08K13/02C08K3/014C08K3/013
Inventor 廖德超许汉卿雷凯智陈春来
Owner NANYA PLASTICS CORP
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