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Power-steering high-pressure hose and production process thereof

A high-pressure hose and power steering technology, applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of affecting service life, difficult adhesion, and affecting the performance of power steering hoses, etc., to achieve good adhesion , reasonable formula design, excellent physical and mechanical properties

Active Publication Date: 2011-05-04
QINGDAO SUNSONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fiber-reinforced power steering high-pressure pipes require good adhesion between the compounded rubber and the fiber-reinforced layer to ensure excellent comprehensive performance. However, due to the composition and structural properties of chlorinated polyethylene rubber, the compounding of this rubber The adhesion between glue and fiber is a thorny problem, and the tensile strength of the power high-pressure hose in the prior art is generally about 17.51N / cm under the test condition of ASTM413 tensile rate of 30mm / min due to the mixed rubber and fiber , affecting the performance improvement of the power steering hose and affecting its service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: A power steering high-pressure hose made of chlorinated polyethylene elastomer includes five layers from inside to outside, namely: inner rubber layer, braided layer, middle rubber layer, braided layer, and outer rubber layer.

[0046] The inner rubber and the middle rubber layer are made of raw materials with the following weight components:

[0047] Chlorinated Polyethylene Elastomer 34%

[0048] Ethylene vinyl acetate elastomer 7%

[0049] Magnesium Oxide 2.5%

[0050] Antiaging agent 1.0%

[0051] Tackifying resin 3.6%

[0052] Carbon Black N330 9.5%

[0053] Carbon Black N550 22.5%

[0054] Light Calcium 7.3%

[0055] Ester plasticizer 9.1%

[0056] Peroxide curing agent 1.8%

[0057] Accelerator 1.5%

[0058] Anti-scorch agent 0.2%

[0059] The cover is made from the following ingredients by weight:

[0060] Chlorinated Polyethylene Elastomer 25%

[0061] Ethylene vinyl acetate elastomer 5%

[0062] Magnesium Oxide 2.8%

[0063] Antiagi...

Embodiment 2

[0077] Embodiment 2: The power steering high-pressure hose made of chlorinated polyethylene elastomer includes five layers from inside to outside, namely: inner rubber layer, braided layer, middle rubber layer, braided layer, and outer rubber layer.

[0078] The inner rubber and the middle rubber layer are made of raw materials with the following weight components:

[0079] Chlorinated Polyethylene Elastomer 30.7%

[0080] Nitrile and PVC alloy 6%

[0081] Magnesium Oxide 2.8%

[0082] Antiaging agent 1.0%

[0083] Tackifying resin 3.6%

[0084] Carbon black N330 9.6%

[0085] Carbon black N550 23.4%

[0086] Light Calcium 10.3%

[0087] Ester plasticizer 9.0%

[0088] Peroxide curing agent 1.8%

[0089] Accelerator 1.6%

[0090] Anti-scorch agent 0.2%

[0091] The cover is made from the following ingredients by weight:

[0092] Chlorinated Polyethylene Elastomer 23.3%

[0093] Nitrile and PVC alloy 8%

[0094] Magnesium Oxide 2.8%

[0095] Antiaging agent 1.0% ...

Embodiment 3

[0109] Embodiment 3: The power steering high-pressure hose made of chlorinated polyethylene elastomer includes five layers from inside to outside, namely: inner rubber layer, braided layer, middle rubber layer, braided layer, and outer rubber layer.

[0110] The inner rubber and the middle rubber layer are made of raw materials with the following weight components:

[0111] Chlorinated Polyethylene Elastomer 33%

[0112] Nitrile Elastomer 8%

[0113] Magnesium Oxide 2.5%

[0114] Antiaging agent 1.0%

[0115] Tackifying resin 3.6%

[0116] Carbon Black N330 9.5%

[0117] Carbon Black N550 22.5%

[0118] Light Calcium 7.3%

[0119] Ester plasticizer 9.1%

[0120] Peroxide curing agent 1.8%

[0121] Accelerator 1.5%

[0122] Anti-scorch agent 0.2%

[0123] The cover is made from the following ingredients by weight:

[0124] Chlorinated Polyethylene Elastomer 25%

[0125] Nitrile Elastomer 5%

[0126] Magnesium Oxide 2.8%

[0127] Antiaging agent 1.0%

[0128] Tack...

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PUM

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Abstract

The invention relates to a power-steering high-pressure hose which comprises five layers, namely, an inner adhesive layer, a weaving layer, a middle adhesive layer, a weaving layer, and an outer adhesive layer which are arranged sequentially from inside to outside. The power-steering high-pressure hose is reasonable in formula design, and prepared by using chlorinated polyethylene elastomers, ethylene vinyl acetate elastomers or butyronitrile / polrvinyl chloride alloy elastomers and butadiene adhesive resins as raw materials, therefore, the excellent physical and mechanical properties of sizing materials are ensured, and a good adhesive force is obtained between chlorinated polyethylene rubbers and a reinforcing fiber layer, wherein the adhesive strength at least can reach 28N / cm under thetest condition that the ASTM413 (American society for testing material 413) extension rate is 30mm / min. In the invention, the chlorinated polyethylene rubbers are really be applied to the power-steering high-pressure hose so as to meet the demands of the current car market.

Description

technical field [0001] The invention relates to the application of chlorinated polyethylene in high-pressure hoses for power steering. Specifically, through reasonable formula design, chlorinated polyethylene elastomer is used to make power steering high-pressure hose and its production process. Background technique [0002] The existing domestic and foreign high-end power steering high-pressure hoses are made of chlorosulfonated polyethylene rubber as the main material, supplemented by carbon black, accelerators and other materials as auxiliary agents, such as mixing extrusion, weaving, vulcanization and other processes. become. As the largest supplier of chlorosulfonated polyethylene, DuPont of the United States is about to stop production, and the current supplier's production capacity cannot meet the market demand for power steering systems in the automotive industry. Therefore, it is imminent to develop materials with comparable performance to meet market demand. Chl...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08L23/08C08L9/02C08L27/06C08L33/04C08L11/00C08K13/02C08K3/22C08K3/04F16L11/08
Inventor 李锴刘杰朱德华
Owner QINGDAO SUNSONG CO LTD
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