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

Ethylene propylene diene terpolymer sponge rubber and preparation method thereof

A technology of EPDM rubber and sponge rubber, which is applied in the field of EPDM sponge rubber and its preparation, to achieve the effect of uniform cells, low density, and simple and easy preparation method

Active Publication Date: 2012-01-25
JINGDONG RUBBER
View PDF3 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional sponge rubber sealing strips do not have this function

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 terpolymer sponge rubber and preparation method thereof
  • Ethylene propylene diene terpolymer sponge rubber and preparation method thereof
  • Ethylene propylene diene terpolymer sponge rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The EPDM sponge rubber described in this embodiment is composed of an EPDM rubber matrix, a foaming agent, a filling reinforcing agent, related vulcanizing agents and vulcanization assistants. As the filling and reinforcing agent, molecular sieve powder is used instead of talc powder and active calcium as the filling and reinforcing system, and the porous structure of molecular sieve powder is used to distribute the cells of the sponge rubber evenly, and to make the sponge rubber product described in this embodiment have a hygroscopic function.

[0031] In this example, the vulcanization system is composed of sulfur, M, TMTD, PZ, BZ, and DPTT, the filler is composed of carbon black and molecular sieve, and the foaming system is composed of foaming agent OBSH. The specific formula is shown in Table 1.

[0032] Table 1

[0033] name Content / phr name Content / phr EPDM 100 TMTD 1 stearic acid 3 M 0.8 Calcium Oxide 5 PZ 0.5 Zinc...

Embodiment 2

[0040] In this example, the difference from Example 1 is that the content of the accelerator has changed, and the specific formula is shown in Table 2.

[0041] Table 2

[0042] name Content / phr name Content / phr EPDM 100 TMTD 0.5 stearic acid 3 M 0.8 Calcium Oxide 5 PZ 1 Zinc oxide 5 BZ 1.5 Si-69 2 DPTT 1 polyethylene glycol 5 EZ 0.5 solid paraffin 2 Blowing agent OBSH 6 Paraffin oil 65 Carbon black N550 20 sulfur 1.2 Molecular sieve powder 115 Antiaging agent 4010NA 1.5 Antiaging agent 2246 0.5

[0043] The performance test results of the EPDM sponge rubber obtained in this embodiment are shown in Table 16.

Embodiment 3

[0045] In this example, the difference from Example 1 is that the content of the accelerator has changed, and the specific formula is shown in Table 3.

[0046] table 3

[0047] name Content / phr name Content / phr EPDM 100 TMTD 1 stearic acid 3 M 0.8 Calcium Oxide 5 PZ 1 Zinc oxide 5 BZ 1.5 Si-69 2 DPTT 1 polyethylene glycol 5 EZ 1 solid paraffin 2 Blowing agent OBSH 6 Paraffin oil 65 Carbon black N550 20 sulfur 1.2 Molecular sieve powder 115 Antiaging agent 4010NA 1.5 Antiaging agent 2246 0.5

[0048] The performance test results of the EPDM sponge rubber obtained in this embodiment are shown in Table 16.

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 provides an ethylene propylene diene terpolymer sponge rubber and a preparation method thereof, relating to a rubber and a preparation method thereof. The ethylene propylene diene terpolymer sponge rubber is prepared from ethylene propylene diene terpolymer, a foaming agent, a filling enhancer, a plasticizer, molecular sieve powder with a hygroscopic effect, a vulcanizing agent and a vulcanizing aid. The ethylene propylene diene terpolymer sponge rubber is characterized in that the molecular sieve powder is used for replacing traditional talc powder or calcium carbonate to be used as a filling agent, a foaming agent azobisformamide (AC) and a foaming agent 4,4'-oxy bis(benzenesulfonyl hydrazide) (OBSH) are combined and matched with an accelerant, and the decomposing rate of the foaming agent and the vulcanizing rate of the ethylene propylene diene terpolymer are matched, thus a microporous sponge rubber sealing product with a hygroscopic function is prepared under die pressing vulcanization conditions. The tensile strength, elongation percentage, stress at definite elongation, compression set and other indexes of the ethylene propylene diene terpolymer sponge rubber can meet the use performance requirements of sponge sealing strips; and at the same time, the sponge rubber has uniform foam pores, small density and hygroscopic function.

Description

technical field [0001] The invention relates to a rubber and a preparation method thereof, in particular to a EPDM sponge rubber and a preparation method thereof. Background technique [0002] The production of microporous elastomer materials includes the use of latex liquid mixture to make sponge foam materials and the use of organic foaming agents to thermally decompose to make sponge foam materials. US Patent No. 3300421 (US Patent 3300421, 1967) discloses a polymer material with a microporous structure that can be used to make padding materials and packaging materials with high resilience. The microporous structure material described in this invention patent is obtained from latex foam or elastic polyurethane foam as raw materials. Japanese Patent Application Laid-Open No. 2002-179825 discloses a method for making sponge rubber. This invention patent produces EPDM foam rubber by adding a foaming agent to the rubber material, making it foam and crosslinking it with an o...

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): C08L23/16C08K13/02C08K5/14C08K3/04C08K3/22C08J9/10
Inventor 王重刘晓博毕文军张佳樑明长城蒋洪敏方庆红张秀斌王娜杨凤韩文驰
Owner JINGDONG RUBBER
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