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Foamed rubber plate and manufacturing process thereof

A foamed rubber and sheet technology, used in tracks, ballast layers, buildings, etc., can solve the problems of heavy solid rubber pads, weak shock load resistance, and low cushioning and shock absorption performance, and achieve excellent chemical resistance. Effects of chemical stability, excellent electrical insulation, and excellent water resistance

Active Publication Date: 2011-04-06
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, the solid rubber pad has heavy weight, high thermal conductivity, weak impact load resistance, and low cushioning and shock absorption performance.

Method used

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  • Foamed rubber plate and manufacturing process thereof
  • Foamed rubber plate and manufacturing process thereof
  • Foamed rubber plate and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] A foamed rubber sheet, which is prepared from the following components in a proportion by weight: EPDM: 100 parts, DCP: 1.7 parts, S: 0.5 parts, CZ: 0.5 parts, TMTD :0.3 parts, zinc oxide: 3.5 parts, stearic acid: 2.5 parts, antioxidant RD: 1 part, antioxidant 4010NA: 1 part, carbon black N220: 20 parts, carbon black N330: 25 parts, carbon black N660: 25 Parts, plasticizer paraffin oil: 55 parts, blowing agent OBSH: 2.5 parts, petrolatum: 0.5 parts.

[0101] The above-mentioned preparation method of foam rubber sheet includes the following steps:

[0102] a. Weigh each component according to the above formula and set aside;

[0103] b. Put the EPDM rubber into the internal mixing chamber for 2 minutes for mastication, the mastication temperature is 70±5℃;

[0104] c. Then put the activator into the banbury mixing chamber for 1 minute, the banbury temperature during this process is 75~80℃; then put the antioxidant, some plasticizers, and fillers into the banbury mixing chamber ...

Embodiment 2

[0115] A foamed rubber sheet, which is prepared from the following components in a proportion by weight: EPDM: 100 parts, DCP: 2 parts, S: 1 part, CZ: 1 part, TMTD :0.5 parts, zinc oxide: 4.5 parts, stearic acid: 2 parts, antioxidant RD: 1 part, antioxidant 4010NA: 1.5 parts, carbon black N220: 25 parts, carbon black N330: 30 parts, carbon black N660: 40 Parts, plasticizer paraffin oil: 65 parts, blowing agent OBSH: 3.5 parts, petrolatum: 0.8 parts.

[0116] The preparation method of the foamed rubber sheet is as described in the first embodiment.

Embodiment 3

[0118] A foamed rubber sheet, which is prepared from the following ingredients in parts by weight: EPDM: 100 parts, DCP: 2.5 parts, S: 1.5 parts, CZ: 1.5 parts, TMTD :1 part, zinc oxide: 4.5 parts, stearic acid: 2.5 parts, antioxidant RD: 1 part, antioxidant 4010NA: 1.5 parts, carbon black N220: 30 parts, carbon black N330: 40 parts, carbon black N660: 50 Parts, plasticizer paraffin oil: 70 parts, blowing agent OBSH: 4 parts, petrolatum: 1 part.

[0119] The preparation method of the foamed rubber sheet is as described in the first embodiment.

[0120] The physical and mechanical performance detection test and related data of the present invention:

[0121] We sent the foamed rubber sheet products prepared in the above embodiments to the Institute of Metal and Chemistry of the Chinese Academy of Railway Sciences for static stiffness, tensile strength, elongation at break, compression set, hot air aging, qualitative analysis of composition, Water resistance etc. were tested, and the...

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Abstract

The invention discloses a foamed rubber plate and a manufacturing process thereof. The foamed rubber plate is prepared from the following components in part by weight: 100 parts of ethylene propylene terpolymer, 3 to 6 parts of vulcanizing agent, 6 to 7 parts of activator, 1 part of anti-aging agent RD, 1 to 1.5 parts of anti-aging agent 4010NA, 70 to 120 parts of filler, 55 to 70 pars of plasticizer paraffin oil, 2.5 to 4 parts of foaming agent OBSH and 0.5 to 1 part of vaseline. The foamed rubber plate has uniform texture; the foamed rubber plate has lighter weight compared with a solid rubber tie plate; meanwhile, the foamed rubber plate has low coefficient of thermal conductivity, high impulsive load resistance and higher buffering and damping performance. By a rational foaming process, a microporous rubber tie plate with closed cell sponge structure is formed in the rubber, so that the requirement on track damping characteristic can be met by replacing the solid rubber.

Description

Technical field [0001] The invention relates to the field of polymer processing, in particular to a foamed rubber sheet and a manufacturing process thereof. Background technique [0002] With the increase of train speed, the technical requirements for track structure are getting higher and higher. Compared with ballasted track, ballastless track has better integrity, stability and durability, and is basically maintenance-free during the service life. Regardless of whether it is a ballasted track or a ballastless track, the track mechanism must maintain a certain degree of flexibility. For a ballasted track, the compactness of the ballast and the particle size of the ballast directly affect the elasticity of the ballast bed. The slab ballastless track improves the track. The elasticity of the track slab is usually filled with CA mortar as an elastic backing plate, but in some special areas, such as densely populated areas or some road-bridge, bridge-tunnel transition sections, ...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/06C08K3/22C08K5/09C08K3/04C08K5/14C08K5/47C08K5/40C08J9/10E01B1/00
Inventor 杨玉玺冉隆诗
Owner 四川宏亿复合材料工程技术有限公司
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