Novel rubber packing plate and production technique thereof

The invention relates to a technology of rubber backing plate and manufacturing process, which is applied in the directions of rails, buildings, fixed rails, etc., and can solve the problems that polyurethane foam cannot meet the elastic coefficient, the uniform dispersion of the backing plate load is poor, and the foam is easy to trap air, etc. Achieve the effect of reducing maintenance frequency, improving weather resistance and saving maintenance costs

Inactive Publication Date: 2008-07-16
四川宏亿复合材料工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still the following problems: 1. The polyurethane foam formed by using a reactive foaming agent cannot meet the comprehensive requirements of low elastic coefficient, good compression characteristics, and high mechanical strength; 2. The diameter of the cells is inconsistent, so that the backing plate Poor load uniformity and dispersion; 3. Air is easy to stay on the foam, resulting in low manufacturing efficiency and low product qualification rate; 4. It has a bad impact on environmental sanitation

Method used

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  • Novel rubber packing plate and production technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Ingredients by mass ratio: EPDM rubber, 80-85; hexadiene, 20-15; sulfur, 2.5; dicumyl peroxide, 0.5; 2-mercaptobenzothiazole, 0.8; Tetramethylthiuram sulfide, 1.2; 4010NA, 2; Paraffin, 1; HAF N330+ISAF N220, 35; SRF N754+FEF N539, 44; Clay, 30; Calcium carbonate, 20; Naphthenic oil, 36.

[0048] The physical properties of the new rubber backing plate produced by selecting the above materials according to the above manufacturing process: hardness, 85 Shore A; tensile strength, 11.8MPa; elongation at break, 237%; compression set, 23% ; Static stiffness, 44KN / mm.

Embodiment 2

[0050] Ingredients by mass ratio: EPDM rubber, 78-85; ethylidene norbornene, 22-15; sulfur, 2.5; dicumyl peroxide, 0.5; 2-mercaptobenzothiazole, 1.2; tetramethylthiuram disulfide, 0.8; 4010NA, 2; paraffin, 1; HAF N330+HAF-LS N326, 40; SRF N754+GPF N660, 37; clay, 30; calcium carbonate, 20; paraffin oil , 38.

[0051] The physical properties of the new rubber backing plate produced by selecting the above materials according to the above manufacturing process: hardness 86 Shore A; tensile strength 11.6MPa; elongation at break 238%; compression set 22%; static stiffness 43KN / mm.

Embodiment 3

[0053] Ingredients by mass ratio: EPDM rubber, 85-90; ethylidene norbornene, 15-10; sulfur, 2; dicumyl peroxide, 1; 2-mercaptobenzothiazole, 0.5; tetramethylthiuram disulfide, 1.5; 4010NA, 2; paraffin, 1; HAF N330+HAF-HS N339, 45; SRF N754+SRF N774, 30; clay, 30; calcium carbonate, 20; naphthene oil, 40.

[0054] The physical properties of the new rubber backing plate produced by selecting the above materials according to the above manufacturing process: hardness 86 Shore A; tensile strength 11.8MPa; elongation at break 256%; compression set 22%; static stiffness 43KN / mm.

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Abstract

The invention relates to a novel rubber pad, the parts by weight of components of which are: 80-95 portions of ethylene propylene diene monomer rubber, 5-20 portions of elastomer, 0.6-2.5 portions of sulfur, 0.5-2.0 portions of dicumyl peroxide, 0.5-1.5 portions of 2-Mercaptobenzothiazole, 0.8-1.6 portions of tetramethylthiuram disulfide, 2 portions of p-Phenylenediamine or naphthylamine antioxidant, 60-90 portions of carbon black, 15-45 portions of argil, 15-50 portions of calcium carbonate and 35-45 portions of operation oil. Production technique of the pad is according to the processes of mixing - plasticizing - banburying - refining - adding sulfidizer - preparing material - diefilling and sufidizing - finishing - inspecting packages and putting in storage. The invention has the advantages that: the rigidity, the vibration and the noise of railway are reduced; the service life and compression deforming quality of the pad are enhanced; elasticity loss of the pad and line maintenance expense are reduced; the invention also has the advantages of sufficient raw materials, low cost, innocuity and no pollution.

Description

technical field [0001] The invention belongs to the field of accessory processing for industries such as railways, subways or light rails, and in particular relates to a novel rubber backing plate and a manufacturing process thereof. Background technique [0002] Backing plates for railways are often used as anti-vibration materials for railway tracks to reduce vibration and noise generated when vehicles are running. Such a backing plate for railways includes a track backing plate inserted between rails and crossties, a backing plate for crossties laid under the crossties, a vibration-proof material for a track flat plate laid under guide rails of a sheet-type track, and the like. Requirements for the constituent materials of such a railway backing plate: 1. Show good anti-vibration performance and cushioning performance, have a relatively low elastic coefficient suitable for use conditions, and have a static stiffness range of 30-75KN / mm; 2. Have good compression Character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02B29B7/00B29B7/72B29B7/28B29C35/02E01B9/68C08K3/06C08K5/14C08K5/47C08K5/40C08K5/18C08K3/04C08K3/34C08K3/26C08K5/01
Inventor 杨玉玺罗金润王会超冉隆诗
Owner 四川宏亿复合材料工程技术有限公司
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