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Composite rubber mat for pot bearing, and production method thereof

A technology for compounding rubber and rubber pads, which is applied in rubber layered products, chemical instruments and methods, and layered products, etc., can solve the problems of shear damage of rubber pads, prone to internal defects, and wear of rubber surface layers, so as to solve the problems of wear and tear. , Improve the compactness and vulcanization quality of the adhesive layer, and the effect of good wear resistance

Inactive Publication Date: 2018-11-06
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing rubber pads for pot bearings are of pure rubber structure, which are large and thick products, and are prone to internal defects during the vulcanization molding process; in addition, during use or assembly, the rubber pads are sheared and damaged by the sealing ring or from the seal. Hidden dangers affecting product life and engineering safety such as bulging and rubber surface wear

Method used

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  • Composite rubber mat for pot bearing, and production method thereof

Examples

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Effect test

Embodiment 1

[0029] A kind of composite rubber pad for basin bearing of the present invention, its structure is as figure 1 As shown, it includes the rubber pad body and the ply layer located on the upper layer of the rubber pad body, and the ply layer is composed of ply and rubber.

[0030] The preparation method of the composite rubber pad for the pot bearing of the present embodiment comprises the following steps:

[0031] (1) Preparation of rubber compound: Weigh the weight of each raw material: 90 parts of NR90, 10 parts of SBR, 3 parts of zinc oxide, 5 parts of stearic acid, 65 parts of carbon black, 10 parts of plasticizer DOP, 1.5 parts of accelerator CZ , 2 parts of sulfur, 2 parts of anti-aging agent 4010NA, mixed by the one-stage process of internal mixer, and mixed with raw rubber and other additives except vulcanization system (sulfur and accelerator CZ) at a speed of 40r / min 5min, then adjust the rotation speed to 30r / min, add sulfur and accelerator CZ, control the temperatu...

Embodiment 2

[0037] A composite rubber pad for pot bearings according to the present invention comprises a rubber pad body and cord layers located on the upper and lower surfaces of the rubber pad body, and the cord layer is compounded by cord cloth and rubber.

[0038] The preparation method of the composite rubber pad for the pot bearing of the present embodiment comprises the following steps:

[0039] (1) Preparation of rubber compound: Weigh the weight of each raw material: 90 parts of NR90, 10 parts of SBR, 3 parts of zinc oxide, 5 parts of stearic acid, 65 parts of carbon black, 10 parts of plasticizer DOP, 1.5 parts of accelerator CZ , 2 parts of sulfur, 2 parts of anti-aging agent 4010NA, mixed by the one-stage process of internal mixer, and mixed with raw rubber and other additives except vulcanization system (sulfur and accelerator CZ) at a speed of 40r / min 5min, then adjust the rotation speed to 30r / min, add sulfur and accelerator CZ, control the temperature below 135°C, and dis...

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Abstract

The invention discloses a composite rubber mat for a pot bearing. The composite rubber mat comprises a rubber mat body and a cord fabric layer positioned on the upper layer of the rubber mat body, andthe cord fabric layer is formed by compounding a cord fabric with rubber. A production method of the composite rubber mat comprises the following steps: (1) preparing a rubber compound; (2) processing the rubber compound to form a preformed rubber block; (3) frictioning a cord fabric with the rubber compound to make the thickness of rubber adhered to the surface of the cord fabric be 1-2 mm in order to obtain a frictioned cord fabric; and (4) placing the frictioned cord fabric on the upper surface of the pre-formed rubber block, stitching the frictioned cord fabric and the pre-formed rubber block, and carrying out pre-heating and vulcanization molding to obtain the composite rubber mat for the pot bearing. The composite rubber mat for the pot bearing adopts NR and SBR as main rubbers, socomposite rubber mat has good elasticity and good wear resistance; and the surface of the composite rubber mat is compounded with the cord fabric, and the characteristics of good wear resistance and small deformation of amount of the fiber material of the cord fabric are used, so product damages caused by swinging and extruding in the use process are avoided, and the problems of wearing and extruding bloating of conventional rubber mats are solved.

Description

technical field [0001] The invention belongs to the field of rubber materials, in particular to a composite rubber pad for a pot bearing and a preparation method thereof. Background technique [0002] The rapid development of high-speed rail and its speed is getting faster and faster, so higher requirements are placed on the shock absorption capacity of bridge construction. Rubber materials have excellent elasticity, and their characteristics in terms of shock absorption and isolation have attracted everyone's attention. In the aspect of bridge shock absorption and isolation, the basin bearing design is a relatively general method. The basin bearing has a good effect by adding rubber pads and has been verified in the project. The existing pot bearing mainly includes an upper bearing plate, a lower bearing plate, an intermediate steel liner, a slide plate, a rubber pad, a sealing ring and other auxiliary structures, wherein the rubber pad plays a major role in shock absorpti...

Claims

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Application Information

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IPC IPC(8): B32B25/04B32B25/10B32B5/02C08L7/00C08L9/06C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06B29B7/00B29C35/02
Inventor 王雪飞张保生
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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