Polybutylece terephthalate (PBT) composite material for exterior decoration parts of automobiles

A composite material, PBT resin technology, applied in the field of PBT composite materials for automotive exteriors, can solve the problems of poor impact resistance, unable to meet the needs of automotive exterior decoration in cold areas, etc., to improve impact resistance, high tensile strength, The effect of high heat resistance

Inactive Publication Date: 2016-04-13
西安艾菲尔德复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a PBT composite material for automobile exterior decoration, which solves the technical problem in the prior art that the PBT composite material has poor impact resistance at low temperature and cannot meet the needs of automobile exterior decoration in cold regions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 100 kg of PBT resin, 1 kg of coupling agent, 2 kg of compatibilizer, 5 kg of heat-resistant agent, 2 kg of toughening agent, and 1 kg of antistatic agent in a high-speed mixing machine, and then add the above mixture to the twin-screw Extrude in the extruder, the extrusion temperature is 245°C, the screw speed is 500r / min, and at the same time, 20 kg of glass fiber and 10 kg of polyimide fiber are fed from the side feed port of the extruder, and extruded After granulation, PBT composite materials for automobile exterior decoration are obtained.

Embodiment 2

[0024] Mix 100 kg of PBT resin, 3 kg of coupling agent, 0.5 kg of compatibilizer, 3 kg of heat-resistant agent, 6 kg of toughening agent, and 2 kg of antistatic agent in a high-speed mixing machine, and then add the above mixture to the twin-screw Extrude in the extruder, the extrusion temperature is 250°C, the screw speed is 400r / min, and at the same time, 25 kg of glass fiber and 5 kg of polyimide fiber are fed from the side feed port of the extruder, and extruded After granulation, PBT composite materials for automobile exterior decoration are obtained.

Embodiment 3

[0026] Mix 100 kg of PBT resin, 5 kg of coupling agent, 1.5 kg of compatibilizer, 1 kg of heat-resistant agent, 4 kg of toughening agent, and 0.5 kg of antistatic agent in a high-speed mixing machine, and then add the above mixture to the twin-screw Extrude in the extruder, the extrusion temperature is 260°C, the screw speed is 600r / min, and at the same time, 30 kg of glass fiber and 8 kg of polyimide fiber are fed from the side feed port of the extruder, and extruded After granulation, PBT composite materials for automobile exterior decoration are obtained.

[0027] The impact strength of the PBT composites prepared in the above examples is greater than or equal to 65kJ / m at -15°C 2 , The measuring instrument is IZOD low temperature pendulum impact testing machine.

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Abstract

The invention provides a polybutylece terephthalate (PBT) composite material for exterior decoration parts of automobiles. The PBT composite material is prepared from the following components in parts by weight: 100 parts of PBT resin, 20-30 parts of glass fibers, 5-10 parts of polyimide fibers, 1-5 parts of a coupling agent, 0.5-2 parts of a compatilizer, 1-5 parts of a heat resistant agent, 2-6 parts of flexibilizer and 0.5-2 parts of an antistatic agent. An enhancing material is compounded from glass fibers and polyimide fibers and is used in the PBT composite material; while high heat resistance, high tensile strength, weather resistance, chemical corrosion resistance and other excellent properties of the PBT composite material are maintained, the impact resistance of the PBT composite material can be effectively improved, and the impact resistance of the PBT composite material at low temperature can be especially improved by using the polyimide fibers; and the PBT composite material with excellent comprehensive performance can be economically and effectively prepared due to the large using amount of glass fibers and small using amount of polyimide fibers, and the requirement for long-term application of exterior decoration parts of automobiles in cold regions can be met.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a PBT composite material for automobile exterior decoration. Background technique [0002] As a crystalline saturated polyester, butylene terephthalate (PBT) crystallizes quickly and is easy to form; the melting point is as high as 225°C and has good heat resistance; low water absorption and good dimensional stability; low friction coefficient and Abrasion resistance; good resistance to chemicals, solvents, and weather; good bending and creep properties; high flame retardant level. Among the varieties, the development and application of PBT engineering plastics in automobiles has always been the focus of the automobile industry and the plastics industry. It is widely used in door lock systems, car mirrors, door handles, car light frames, bumpers, wipers, Fuse boxes, connectors, ignition systems, lamp sockets, etc. PBT materials for automotive interiors should have out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L79/08C08K13/04C08K7/14
Inventor 齐海港
Owner 西安艾菲尔德复合材料科技有限公司
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