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Low-thermal-expansion and high-ozone-resistance ethylene propylene terpolymer hose

A technology of EPDM rubber and EPDM hoses, which is applied in the direction of hoses, pipes, pipes/pipe joints/fittings, etc., and can solve the problems that cannot meet the low thermal expansion coefficient of EPDM hoses, high temperature resistance and atmospheric aging resistance. , to achieve the effects of low thermal expansion coefficient, low dynamic heat generation and good low temperature compliance

Active Publication Date: 2012-08-22
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formula of EPDM hose used in the past adopts a single protection system and filling reinforcement system, which can no longer meet the requirements of low thermal expansion coefficient, high ozone resistance, high temperature resistance and atmospheric aging resistance of EPDM hose, so the low Thermal expansion and high ozone resistance EPDM hose came into being

Method used

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  • Low-thermal-expansion and high-ozone-resistance ethylene propylene terpolymer hose
  • Low-thermal-expansion and high-ozone-resistance ethylene propylene terpolymer hose
  • Low-thermal-expansion and high-ozone-resistance ethylene propylene terpolymer hose

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Implementation mode of low thermal expansion and high ozone resistance EPDM hose formulation:

[0017] In parts by mass

[0018]

[0019]

[0020] The raw materials in the formulations listed in the implementation list are made into films for testing and testing. The performance comparison with the single protection system and single filling and reinforcing system formula is as follows:

[0021]

[0022]

[0023] From the data in the above table, it can be concluded that the formula of low thermal expansion coefficient and high ozone resistance EPDM hose not only has higher strength and elongation than the formula of single protection system and reinforcement system, but also has high temperature resistance and ozone resistance. The performance is more excellent, the compression set and impact elasticity, the water absorption performance and the abrasion are better, especially the low thermal expansion coefficient and the smaller deformation, which can better meet the requirem...

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PUM

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Abstract

The invention relates to the technical field of automobile hoses, in particular to a low-thermal-expansion and high-ozone-resistance ethylene propylene terpolymer hose. Raw materials of the hose include ethylene propylene terpolymer, rubber powder, zinc oxide, polyethylene glycol, stearic acid, an anti-aging agent AW, an anti-aging agent IPPD, fast extruding furnace black N550, silicon powder treated by a vinyl silane coupling agent, paraffin oil, silicon Si-69, a cross linking agent BIBP and an assistant crosslinker. The low-thermal-expansion-coefficient and high-ozone-resistance ethylene propylene terpolymer hose has higher intensity and elongation rate than those in the formulas of a single protective system and a reinforcing system, higher high temperature aging resistance and ozone resistance, better impact elasticity, water absorption and abrasion value, particularly low thermal expansion coefficient and small compression permanent deformation, and can be taken as a cooling circulating system hose and a gas delivery hose used in an environment with high requirements on assembly size accuracy and high ozone concentration.

Description

Technical field [0001] The invention relates to a rubber hose, in particular to a EPDM hose with low thermal expansion and high ozone resistance. Background technique [0002] The phenomenon of thermal expansion and contraction is widespread in nature, and it has a wide range of impacts on human daily life and scientific research and production. The thermal expansion properties of various materials vary greatly, especially the thermal expansion properties of rubber products. In all projects, it is inevitable to use different materials in combination, which must consider the possible stresses between components according to the expansion coefficients of different materials, so as to determine the allowable tolerances of various components. Generally, the lower the thermal expansion coefficient of the material, the smaller the deformation of the product produced, and the higher the accuracy of the product produced. [0003] At the same time, polyolefin polymer materials such as rub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L21/00C08L71/08C08K13/06C08K3/22C08K3/34C08K5/18C08K5/14F16L11/04
Inventor 张洪起李智
Owner TIANJIN PENGYI GRP CO LTD