Polyurethane shock absorber and preparation method thereof

A technology of shock absorber and polyurethane, which is applied in the field of rail transit, can solve the problems of failure to achieve the purpose of use, failure of glue opening, poor shock isolation effect, etc., and achieve the effect of not being easy to fail on the bonding surface, taking into account tight assembly, and taking into account the effect of shock absorption Effect
CN113153944AActive Publication Date: 2021-07-23ZHUZHOU TIMES NEW MATERIALS TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUZHOU TIMES NEW MATERIALS TECH
Publication Date
2021-07-23

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Abstract

The invention discloses a polyurethane shock absorber and a preparation method thereof. The polyurethane shock absorber comprises more than two polyurethane elastomer material layers, the hardness degrees of the adjacent polyurethane elastomer material layers are different, and the hardness value set of all the polyurethane elastomer material layers at least comprises two different hardness values. Every two adjacent polyurethane elastomer material layers are formed by being cast in sequence, a binder is brushed or sprayed on the polyurethane elastomer material layer which is formed firstly, and then the other polyurethane elastomer material layer is formed on the surface of the polyurethane elastomer material layer by being cast. By using the multi-layer polyurethane structure with different hardness degrees, the shock absorption effect of different vibration frequency intervals can be achieved, the shock absorption performance is greatly improved, and the glue failure problem of metal and high polymer materials can be effectively avoided.
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Description

technical field

[0001] The invention belongs to the field of rail transportation, and in particular relates to a polyurethane shock absorber and a preparation method thereof. Background technique

[0002] Vehicles will vibrate at different frequencies during operation. In order to improve ride comfort or protect components in the vehicle body, shock absorbers made of polymer materials are required for shock absorption.

[0003] Existing shock absorbers use a single-formulation single-layer polymer material. Due to the differences in the corresponding material performance parameters in different vibration frequency ranges during vehicle operation (the vibration frequency range during vehicle operation is 10-2000 Hz), the vibration range Due to the large difference in isolation efficiency in different frequency bands and the resonance amplification, the overall isolation effect is not good, and the best use purpose cannot be achieved.

[0004] In addition, ball joint products...

Claims

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