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Low pressure power steering tube rubber composition with chlorinated polyethylene rubber as main component

A technology of rubber composition and chlorinated polyethylene, applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of poor control of extrusion size, high material and processing costs, and fewer manufacturers. Achieve the effect of low price, high mechanical performance and simple production process

Inactive Publication Date: 2012-04-18
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing process of this material is difficult to control, and the extrusion size is not easy to control, which leads to fewer manufacturers of this product and lower output, which cannot meet the increasing demand of the market, and its material and processing costs are also higher.

Method used

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  • Low pressure power steering tube rubber composition with chlorinated polyethylene rubber as main component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Chlorinated polyethylene rubber 100 parts,

[0030] Quickly squeeze out 40 parts of carbon black,

[0031] 20 parts of medium particle thermal cracking carbon black,

[0032] Calcium Hydroxide 10 parts,

[0033] 20 parts of dioctyl esters,

[0034] 7 parts of magnesium oxide,

[0035] 3 parts epoxy resin,

[0036] Anti-aging agent NBC 1 part,

[0037] Diallyl phthalate 6 parts,

[0038] 6 parts of 1,4-bis-tert-butylperoxycumene.

[0039] Performance of Example 1: hardness 72.5, tensile strength 12.9MPa, elongation 273%; 100°C×72h resistant to 1# oil volume change rate at -4.9%; 100°C×72h compression set 50.2%.

Embodiment 2

[0041] Chlorinated polyethylene rubber 100 parts,

[0042] Quickly squeeze out 45 parts of carbon black,

[0043] Medium particle thermal cracking carbon black 15 parts,

[0044] Calcium Hydroxide 10 parts,

[0045] 30 parts of dioctyl esters,

[0046] 11 parts of magnesium oxide,

[0047] 5 parts of epoxy resin,

[0048] Anti-aging agent NBC 1 part,

[0049] Diallyl phthalate 8 parts,

[0050] 7.5 parts of 1,4-bis-tert-butylperoxycumene.

[0051] Performance of Example 2: hardness 69.5, tensile strength 16.3MPa, elongation 302%; 100°C×72h resistance to 1# oil volume change rate at -3.4%; 100°C×72h compression set 51.3%.

Embodiment 3

[0053] Chlorinated polyethylene rubber 100 parts,

[0054] Quickly squeeze out 50 parts of carbon black,

[0055] 10 parts of medium particle thermal carbon black,

[0056] Calcium Hydroxide 10 parts,

[0057] 20 parts of dioctyl esters,

[0058] 9 parts of magnesium oxide,

[0059] 4 parts epoxy resin,

[0060] Anti-aging agent NBC 1 part,

[0061] Diallyl phthalate 7 parts,

[0062] 6.5 parts of 1,4-bis-tert-butylperoxycumene.

[0063] Performance of Example 3: hardness 74.3, tensile strength 14.7MPa, elongation 281%; 100°C×72h resistant to 1# oil volume change rate at -5.1%; 100°C×72h compression set 52.1%.

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Abstract

The invention relates to a rubber composition for low pressure power steering tubes. The rubber composition comprises the following components by mass: chlorinated polyethylene rubber 100 parts, fast extruding carbon black 40 to 60 parts, medium thermal carbon black 0 to 20 parts, calcium hydrate 10 parts, dioctyl ester 20 to 30 parts, magnesium oxide 7 to 15 parts, epoxy resin 3 to 5 parts, the antioxidant NBC 1 part, diallyl phthalate 6 to 10 parts, and 1,4-bis(tert-butylperoxyisopropyl)benzene 6 to 8 parts. According to the invention, chlorinated polyethylene is utilized to substitute chlorosulfonated polyethylene in the low pressure power steering tubes, which guarantees heat resistance and oil resistance of the low pressure power steering tubes and enables a low price to be obtained;a production process for the rubber composition is simple, and the product of the rubber composition has widely available sources and better practical application.

Description

technical field [0001] The invention relates to the technical field of rubber hoses, in particular to a low-pressure power steering hose made of a chlorinated polyethylene rubber (CM) composition. Background technique [0002] At present, the low-pressure power steering tubes used in the automotive industry basically use chlorosulfonated polyethylene rubber (CSM) as the main material. This material has high strength and good oil resistance. However, the processing process of this material is difficult to control, and the extrusion size is not easy to control. This leads to fewer manufacturers of this product and lower output, which cannot meet the increasing demand of the market, and its material and processing costs are also higher. [0003] Chlorinated polyethylene rubber (CM) is a rubber material with a molecular structure similar to CSM. Its heat resistance and oil resistance are equivalent to those of chlorosulfonated polyethylene rubber (CSM), although its strength is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L63/00C08K13/02C08K3/04C08K3/22C08K5/12C08K5/14F16L11/04
Inventor 张洪起万桂玲
Owner TIANJIN PENGYI GRP CO LTD
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