Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ethylene propylene diene monomer (EPDM) composition for low-hardness glue injection

A technology of EPDM and EPDM rubber, which is applied in the field of rubber, can solve problems such as product installation and use difficulties, and achieve the effects of improving bad appearance, reducing costs, and increasing plasticity and toughness

Inactive Publication Date: 2013-03-27
TIANJIN PENGYI GRP CO LTD
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the high hardness of rubber, the hardness will increase to a certain extent in winter in low temperature environments, which will eventually lead to difficulties in product installation and use. It is precisely because of this that low hardness automotive intake and exhaust system hoses and hoses used in low temperature environments have been developed. Connecting pipe is very necessary

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 (EPDM) composition for low-hardness glue injection
  • Ethylene propylene diene monomer (EPDM) composition for low-hardness glue injection
  • Ethylene propylene diene monomer (EPDM) composition for low-hardness glue injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] An embodiment of a low-hardness EPDM composition formulation for glue injection:

[0021] In parts by mass

[0022]

[0023]

[0024] The raw materials in the formulations listed in the implementation are made into films for testing. The performance comparison of a low-hardness EPDM composition formulation for glue injection is as follows:

[0025]

[0026] From the data in the above table, it can be concluded that a low-hardness EPDM composition formulation for automotive rubber injection molding not only has a lower original hardness of only about 50 degrees, but also higher tensile strength and 100% tensile stress. At the same time, the performance after heat-resistant air aging is also more excellent, the performance after heat resistance is small, the compression set is also low, and the cold resistance and low temperature brittleness are excellent. It can be used in low temperature environments in different regions in winter. The lowest temperature can be It reaches min...

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) composition for low-hardness glue injection. The composition comprises the following ingredients: EPDM rubber, activated zinc oxide, stearic acid, polyethylene glycol, 2,2,4-trimethyl-1,2-dihydroisoquinoline polymer, carbon black N330, carbon black N550, silicon dioxide hydrate, paraffin oil, coupling agent Si-69, accelerator DM, zinc diethyl dithiocarbamate, tetramethyl thiuram disulfide, bis(pentamethylene)thiuram tetrasulfide, and sulphur. According to the formula of the composition, the original hardness is low and is only about 50 degrees, the tensile strength and 100% stress at definite elongation are high, thermal air aging resistance property, the coldness resistance and low-temperature crispness are all excellent to meet the use requirement under low-temperature environment of different regions in winter, the lowest temperature can reach minus 45 degrees, glue injection technique is adopted to be capable of saving labor time and manual work. The composition formula can meet the requirements of RCF-510 grade material in MES MN300 standard.

Description

Technical field [0001] The invention relates to the technical field of rubber, in particular to a low-temperature resistant EPDM composition for low-hardness rubber injection. Background technique [0002] The main chain of EPDM (Ethylene Propylene Rubber) is composed of chemically stable saturated hydrocarbons and only contains unsaturated double bonds in the side chain, so it is basically a saturated rubber. Since there are no polar substituents in the molecular structure and the cohesive energy between molecules is low, the molecular chain can maintain flexibility in a wide temperature range. The chemical structure of ethylene propylene rubber gives its vulcanized products unique properties. [0003] EPDM (ethylene propylene diene monomer rubber), as a kind of rubber with good elasticity, abrasion resistance, heat resistance, weather resistance, ozone resistance, resistance to fresh water and sea water, has been widely used in rubber products for automobiles. Used in door and ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08L71/08C08K13/02C08K5/5415C08K3/22C08K5/09C08K5/3437C08K3/04C08K3/36C08K5/372C08K5/40C08K3/06
Inventor 张洪起李智
Owner TIANJIN PENGYI GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com