Unlock instant, AI-driven research and patent intelligence for your innovation.

Ethylene propylene diene monomer and ethylene-vinyl acetate blending composite and application

A technology of EPDM rubber and vinyl acetate, applied in rigid pipes, mechanical equipment, pipes/pipe joints/fittings, etc. The effect of improving delamination problems, improving adhesive strength, and excellent heat resistance

Inactive Publication Date: 2012-08-01
TIANJIN PENGYI GRP CO LTD
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of air-conditioning rubber hose, although EPDM is used for the outer rubber layer to meet the low temperature resistance of -40°C and the high temperature of 150°C, its bonding strength with polyester thread is very low, and it is prone to delamination. The rubber hose after the layer is not easy to be buckled in assembly,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ethylene propylene diene monomer and ethylene-vinyl acetate blending composite and application
  • Ethylene propylene diene monomer and ethylene-vinyl acetate blending composite and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The formulation of the blend composition of EPDM and EVM according to the present invention is described in the following table, and the ratio of the components of the formulation is in parts by mass.

[0025]

[0026]

[0027] Through the data analysis of the above examples, it can be seen that by blending EVM in EPDM, the heat resistance of the blended composition is significantly improved compared with that of the EPDM composition, and the rate of change in tensile strength and elongation at break are both smaller and more It is remarkable that the bonding strength between the outer rubber layer and the polyester thread made of the blend composition is significantly higher than that of EPDM used alone, thus solving the problem of poor bonding strength between the outer rubber layer of the air-conditioning hose made by EPDM and the polyester thread Problems causing hose delamination.

[0028] It can be seen from the above examples that with the blending of diffe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an ethylene propylene diene monomer (EPDM) and ethylene-vinyl acetate (EVM) blending composite, which contains components of ethylene propylene diene monomers, ethylene-vinyl acetates, fast extruding furnace black, paraffin oil, magnesium oxide, poly(1,2-dihydro-2,2,4-trimethylquinoline), triallyl cyanurate and 1,4-bis(tert-butyldioxyisopropyl)benzene. By adopting blending of EPDM and EVM, thermal aging property of rubber composites and adhesive strength of polyester lines are obviously improved, and therefore air-conditioning rubber hose external rubber layers with high and low temperature resistance and high adhesive strength with the polyester lines can be manufactured by adjusting blending proportion of EPDM and EVM.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a blend composition of ethylene-propylene diene monomer (EPDM) and ethylene-vinyl acetate rubber (EVM) for preparing an outer rubber layer of an air-conditioning rubber hose and its application. Background technique [0002] With the rapid development of the automobile industry, automotive air-conditioning hoses, like fuel hoses, are the fastest-growing automotive hose products. Air-conditioning hoses must withstand continuous vibration and strong corrosion by HFC-134a refrigerant during use. It can not only be used in a low temperature environment of -40°C, but also withstand high temperatures above 100°C for a long time. To solve the problem of penetration and corrosion of HFC-134a refrigerant, polyamide materials (such as nylon 6, nylon alloy ZYTEL, etc.) with excellent resistance to HFC-134a penetration are generally selected as the inner lining layer, so the structure of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/16C08L23/08C08L31/04C08K13/02C08K3/04C08K3/22C08K5/3437C08K5/3492C08K5/14F16L9/12
Inventor 张洪起万桂玲
Owner TIANJIN PENGYI GRP CO LTD