Elastic body material for refrigerator sealing strips and preparation method thereof

Abstract

The invention discloses an elastic body material for refrigerator sealing strips and preparation method thereof. The elastic body material for refrigerator sealing strips consists of hydrogenation styrene resin, rubber filling oil, polypropylene, mineral filler, weather resistant agent, compatibilizer and processing aids. The elastic body material for refrigerator sealing strips is manufactured by extrusion graining with counter-rotating twin-screw extruder after the raw material is mixed in high-speed mixer. Halogen material and o-benzene plasticizer which is harmful to human health will not be introduced in practical production process of the elastic body material for refrigerator sealing strips. The thermoplastic elastomer material produced in the invention has the advantages of light weight, high resilience, high welding strength, easy colorizing and good low-temperature resistance. There is no need for the treatment of high temperature sulfidation when extrusion moulding is operated with the above material. Decomposion of toxic gas and corrosion of production equipments will not happen during the process of extrusion moulding, and scraps can be recovered and re-used.

Description

technical field [0001] The invention relates to the field of thermoplastic elastomer materials, in particular to an elastomer material for refrigerator sealing strips and a preparation method thereof. Background technique [0002] Sealing strip products can only play a sealing role under the premise of elasticity, so various sealing strip products have been using elastic rubber materials for a long time. The first generation of rubber materials has the defects of difficult coloring, complicated processing procedures, and non-recyclability. Soon the rubber material was replaced by the second-generation PVC sealing material. PVC sealing material has the advantages of cheap price, simple production process, and high-efficiency continuous production. It has become the mainstream material used for refrigerator sealing strips. However, as consumers have higher and higher requirements for quality, the environmental protection of PVC sealing strips, the harmfulness of the processi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the elastomeric material used for refrigerator sealing strips in the prior art, and provide an elastomeric material for refrigerator sealing strips, which has good mechanical properties, good resilience, high welding strength, and low temperature resistance. The characteristics of excellent, high weather resistance and high cost performance, on the one hand, overcome the shortcomings of PVC sealing strips, and on the other hand, effectively solve the problems of low welding strength and insufficient weather resistance of current TPS sealing strips