Thermoplastic polyester elastomer closed-cell micro-foaming material, preparing method thereof and vibration absorbing usage

Abstract

The present invention discloses a thermoplastic polyester elastomer closed-cell micro-foaming material, a preparing method and a vibration absorbing usage. The thermoplastic polyester elastomer closed-cell micro-foaming material is prepared by the following steps: preparing the base stock by mixing TPE, filling agent, viscosity controlling agent and antioxidant and granulating, and then after adding into foaming master batch, executing molding injection and foaming. The thermoplastic polyester elastomer closed-cell micro-foaming material of the invention has the advantages of vibration absorbing usage of product, simple formula and available raw material, low cost; simple operation of preparing method, easy control of technological condition, low operation cost, high production efficiency, excellent performance and stable quality of product. Furthermore the product can be used for manufacturing vibration absorbing washer and vibration absorbing backing plate.

Description

technical field [0001] The invention relates to a polymer modified material, in particular to a thermoplastic polyester elastomer closed-cell micro-foaming material, a preparation method thereof, and a shock-absorbing application. Background technique [0002] As a railway sleeper pad for shock absorption, it is located between the rails and the sleepers to bear the impact and extrusion load produced by each wheel of the passing train when it moves on the sleeper pad and the sleepers. The existing sleeper pads are mostly made of rubber, EVA (ethylene-ethylene- Vinyl acetate copolymer (a kind of hot melt adhesive) or TPU (an adhesive thermoplastic polyurethane resin) made of rubber has good elasticity and shock absorption performance but its service life is low; while engineering plastics have high strength but Its own flexibility and dynamic mechanical properties lead to poor shock absorption effect. With the rapid development of modern high-speed railways, the high-speed o...

AI Technical Summary

Problems solved by technology

[0002] As a railway sleeper pad for shock absorption, it is located between the rails and the sleepers to bear the impact and extrusion load produced by each wheel of the passing train when it moves on the sleeper pad and the sleepers. The existing sleeper pads are mostly made of rubber, EVA (ethylene-ethylene- Vinyl acetate copolymer (a kind of hot melt adhesive) or TPU (an adhesive thermoplastic polyurethane resin) made of rubber has good elasticity and shock absorption performance but its service life is low; while engineering plastics have high strength but Its own flexibility and dynamic mechanical properties lead to poor shock absorption effect

With the rapid development of modern high-speed railways, the high-speed operation of trains puts forward higher requirements for the shock absorption performance of high-speed railways. The original rubber pads, EVA pads, and TPU pads have been difficult to meet the shock absorption requirements of the growing high-speed railways.

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