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Preparation method of a double-layer structure train outer windshield rubber material

A technology of rubber material and double-layer structure, applied in rubber layered products, chemical instruments and methods, layered products, etc., can solve the problems of insufficient aging crack resistance, poor sealing performance, and poor appearance, etc. Achieve excellent flex crack resistance, good ozone resistance, and the effect of increasing cross-linking points

Active Publication Date: 2019-11-15
CHUZHOU YONGTONG TRAFFIC EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the operation of the rubber windshield: poor sealing, insufficient aging and crack resistance, and unattractive appearance, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A method for preparing a double-layer structure train outer windshield rubber material. The rubber material is prepared by using an anti-aging rubber layer and an elastic rubber layer through a calender to form a double-layer structure, and then jointly vulcanized.

[0019] Wherein, the anti-aging rubber layer formula includes the following raw materials in parts by weight: 100 parts of EPDM rubber, 10 parts of nano-calcium carbonate, 7 parts of kaolin, 2 parts of anti-aging agent RD, 5 parts of chlorinated paraffin, 6 parts of polyethylene wax 2 parts, 2 parts of sulfur, 8 parts of nano-titanium dioxide.

[0020] Wherein, the elastic rubber layer formula includes the following raw materials in parts by weight: 150 parts of EPDM rubber, 4 parts of antioxidant RD, 6 parts of zinc oxide, 7 parts of stearic acid, 8 parts of polyethylene wax, 5 parts of sulfur, 70 parts of modified attapulgite.

[0021] Wherein, the preparation of the modified attapulgite is as follows: ac...

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Abstract

The invention discloses a preparation method of a bilayer-structured train outer windshield rubber material. The rubber material is prepared by compounding and shaping an anti-aging rubber layer and an elastic rubber layer as a bilayer structure through a calender and vulcanizing the bilayer structure. In the prepared bilayer-structured train outer windshield rubber material, the outer layer is the anti-aging rubber layer, so that an outer windshield achieves excellent flex cracking resistance, ozone resistance and sun-baked weather aging resistance; and the inner layer is the elastic rubber layer, so that the effect support can be achieved in a windshield capsule, the instant overall compression resilience of the windshield capsule is effectively improved, and the sealing effect of the windshield is improved.

Description

technical field [0001] The invention relates to the technical field of production and processing of train components, in particular to a method for preparing a double-layer structure train outer windshield rubber material. Background technique [0002] The windshield of the high-speed EMU is divided into two parts: the outer windshield and the inner windshield, which jointly bear the extrusion and relative movement between the vehicles, and the inner windshield is mainly used as a passenger safety passage, and the outer windshield is used to reduce the noise generated by the vehicle when it is running. Make the arc connection between the two vehicles smooth and consistent, so as to reduce the air resistance when the high-speed EMU is running. However, there are still some problems in the operation of the rubber windshield: poor sealing, insufficient aging and crack resistance, and unattractive appearance. [0003] Attapulgite is a layer chain structure of hydrous magnesium-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C43/24B29C35/02B29B7/74C08L23/16C08L23/06C08K13/02C08K3/26C08K3/34C08K3/22C08K13/06C08K9/06B32B25/04
Inventor 张文勇王林夏广志
Owner CHUZHOU YONGTONG TRAFFIC EQUIP