Thermoplastic elastomer alloy material for manufacturing automobile safe airbag lid

Abstract

This invention relates to thermal plastic elastomer (TPE) alloy materials used to manufacture mobile airbag cover, which is characterized by using SEBS I and SEBS II, polyolefin elastomer (POE), polypropylene (PP) rubber filling oil, high and low temperature modifier, antioxidants and other additives as the raw materials. The preparation method includes: mixing SEBS I, SEBS II, and rubber filling oil with a high-speed machine at low-speed to obtain the oil-filled SEBS, adding POE I, POE II, polypropylene, antioxidants, and other additives in the high-speed machine and mixing at high speed, adding oil-filled SEBS and mixing at high-speed, extruding, and granulating. The advantages of this invention are as follows: brittle transition temperature is below minus 40degreeC, materials are not softening at 80degreeC, the material has good heat-resistance (100degreeC, seven days aging experiments, properties dropped < 50%) and high-outdoor (UV) properties, and the material can be processed easily and color directly without paint.

Description

technical field [0001] The invention relates to a new thermoplastic elastomer alloy material, in particular to a thermoplastic elastomer alloy material used for manufacturing automobile safety air bag covers, and belongs to the technical field of alloy materials for automobiles. Background technique [0002] The polymer materials used for automobile airbag covers are divided into two categories: one is polyester copolymer polymer material (TPEE); the other is various polymer alloys (TPE) based on thermoplastic elastomers. At present, the polyester copolymer polymer material is the most used in various models abroad. However, due to the lack of good low-temperature performance of the material and the high cost, alloy-type modified materials in the foreign market are beginning to rapidly replace polyester copolymerized polymer materials. Although polymer alloys are low in cost and improve the low temperature properties of some polyester interpolymers, their high temperature p...

AI Technical Summary

Problems solved by technology

However, due to the lack of good low-temperature performance of this material and the high cost, alloy-type modified materials in foreign markets are beginning to rapidly replace polyester copolymerized polymer materials.

Although the polymer alloy is low in cost and improves the low temperature performance of some polyester interpolymers, its high temperature performance is not ideal