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Elastomer-bonded sheet material and process for its production

A technology for elastomers, vulcanized elastomers, used in chemical instruments and methods, other chemical processes, other household appliances, etc., and can solve problems such as material hardening

Inactive Publication Date: 2005-02-02
KLINGER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For gaskets, this is also due to the hardening of the material due to the above effects

Method used

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  • Elastomer-bonded sheet material and process for its production
  • Elastomer-bonded sheet material and process for its production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Composition 1 with sole R rubber as matrix

[0023] A homogeneous mass of vulcanizate powder was prepared by mixing the following raw materials in a tubular mixer.

[0024] 13-17 parts of R rubber, which is nitrile rubber at this time

[0025] 38-45 parts kaolin

[0026] 3-8 parts of precipitated silica

[0027] 5-9 parts of para-aramid fiber

[0028] 25-30 parts glass fiber

[0029] 2 to 3 parts of sulfur-based vulcanization additives, including sulfur, accelerators, activators, co-activators and processing aids.

[0030] During mixing, 28-33 parts (based on total dry matter) of toluene were used to dissolve the NBR.

Embodiment 2

[0031] Example 2: Composition 2 with a blend of R and M rubbers or a partially hydrogenated R rubber as a matrix

[0032] A homogeneous mass of vulcanizate powder was prepared by mixing the following raw materials in a tubular mixer.

[0033] 6.8 to 8.5 parts of R rubber; nitrile rubber

[0034] 6.8-8.5 parts of M rubber or rubber with double bond content <7%, which is partially hydrogenated nitrile rubber (34±1% ACN, residual double bond 3-5%)

[0035] 38-45 parts kaolin

[0036] 3-8 parts of precipitated silica

[0037] 5-9 parts of para-aramid fiber

[0038] 25-30 parts glass fiber

[0039] 2 to 3 parts of sulfur-based vulcanization additives, including sulfur, accelerators, activators, co-activators and processing aids.

[0040] During mixing, 28-33 parts (based on total dry matter) of toluene were used to dissolve the two elastomers.

Embodiment 3

[0041] Example 3: Composition 3 with sole M rubber or partially hydrogenated R rubber as matrix

[0042] A homogeneous mass of vulcanizate powder was prepared by mixing the following raw materials in a tubular mixer.

[0043] 13-17 parts of M rubber or rubber with double bond content <7%, which is partially hydrogenated nitrile rubber (34±1% ACN, residual double bond 3-5%)

[0044] 38-45 parts kaolin

[0045] 3-8 parts of precipitated silica

[0046] 5-9 parts of para-aramid fiber

[0047] 25-30 parts glass fiber

[0048] 2 to 3 parts of sulfur-based vulcanization additives, including sulfur, accelerators, activators, co-activators and processing aids. During mixing, 28-33 parts (based on total dry matter) of toluene were used to dissolve the HNBR.

[0049] Example of manufacturing sample sheet

[0050] use figure 2 A two-roll vertical calender was used to fabricate sample sheets.

[0051] Use high-pressure water to heat the surface temperature of the roller 6 to 180±...

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Abstract

AThe invention relates to an elastomer-bonded sheet material encompassin g vulcanized elastomer content and content composed of at least one filler bonded therein, where the vulcanized elastomer content encompasses, based on the entire elastomer content, from about 25 to 70% by weight, preferably from about 40 to 60% by weight, of at least one vulcanized elastomer which in the unvulcanized state has not more than 10%, preferably not more than 7%, of unsaturated carbon double bonds in the main chain.

Description

technical field [0001] The present invention relates to an elastomer bonded sheet which is particularly suitable for sealing. The invention also relates to methods of making such elastomeric bonded sheets. Background technique [0002] It is well known that fiber reinforced elastomer gaskets are prone to irreversible aging. At first, this problem was masked by the very high asbestos content of up to 80% by weight, so that even as the elastomer ages, the material retains its stability. After people realize that asbestos is dangerous to health, just begin to try to replace asbestos fiber with other fiber, especially replace asbestos fiber with synthetic fiber such as p-aramid fiber, glass fiber or carbon fiber. However, the high cost of these fibers, and the manufacturing problems of each using specific fibers, means that their content must be significantly reduced and replaced with low cost powdered fillers such as kaolin, silica, graphite, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18B32B25/02B32B27/00C08L21/00C09K3/10
CPCC09K2200/0607C09K2200/0612C09K2200/0247B32B25/02C09K3/1028C09K2200/026Y10T428/261Y10T428/256Y10T428/252Y10T428/258Y10T428/259Y10T428/31551Y10T428/31609Y10T428/249933Y10T428/249921C08K3/013B29C43/24B32B27/20C08K7/04C08J2321/00B32B2581/00B32B2250/40B32B37/156B32B2038/0076B32B2305/72
Inventor 乌尔里克·拉斯特迈耶乔尔格·拉特斯蒂芬·皮林格
Owner KLINGER AG
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