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

Low-pressure variation ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil, and preparation method thereof

A technology for changing ethylene acrylate and rubber materials, which is applied in the field of low pressure changing ethylene acrylate rubber material and its preparation, can solve the problems of high oil resistance, can only reach -30--35 ℃, oil resistance is reduced, etc. The effect of good low temperature performance, reducing processing cost and improving low temperature resistance performance

Inactive Publication Date: 2015-08-19
南京金三力高分子科技有限公司
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing ethylene acrylate rubber seals are prone to failure during high and low temperature cycle tests. It is necessary to develop an ultra-low temperature resistant ethylene acrylate rubber material that can meet both the technical indicators of VW TL52329 and the above high and low temperature cycle tests.
However, although ethylene acrylate rubber has good oil resistance, high temperature resistance, and low temperature resistance, it still has a high degree of development to meet the technical indicators of VW TL52329, while taking into account the characteristics of high temperature resistance, oil resistance, low pressure change, and low temperature resistance. difficulty
In order to make the ethylene acrylate rubber material meet the technical indicators of VW TL 52329 and increase the reliability of use in low temperature environments, the glass transition temperature Tg value of the ethylene acrylate rubber material needs to be ≤ -40°C, and the existing situation The Tg value of ethylene acrylate rubber materials can only reach -30~-35°C, and it is still necessary to find a suitable solution
[0004] In addition, when making low-temperature-resistant ethylene acrylate products, the existing automotive seal industry often chooses Vamac Ultra IP as the material for making seals because DuPont’s Vamac Ultra IP raw rubber has better low-temperature resistance than other brands. , but the oil resistance of Vamac Ultra IP is slightly worse than other brands, and it is difficult to meet the high oil resistance requirements
[0005] As we all know, the commonly used softening plasticizers in ethylene acrylate rubber that can meet the requirements of high and low temperature resistance include TP95, TP759, and RS-735, but when the amount is more than 20 parts, the good low temperature resistance performance can be highlighted and the price is relatively expensive. When it exceeds 20 parts, the oil resistance performance will decrease

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
  • Low-pressure variation ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil, and preparation method thereof
  • Low-pressure variation ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil, and preparation method thereof
  • Low-pressure variation ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A low-pressure variable ethylene acrylate rubber material resistant to ultra-low temperature and high temperature oil in this embodiment, its mass ratio is as follows: 100 parts of ethylene acrylate rubber, 4,4'-bis(phenylisopropyl)diphenylamine 2 0.5 parts of processing aid 18D, 1 part of stearic acid, 1 part of processing aid VAM, 100 parts of carbon black ST1120, 12.5 parts of softening plasticizer EK-70, 11.2 parts of crosslinking aid HMDC-1,8 vulcanizing agent -2 parts of diazabicyclo[5.4.0]undec-7-ene.

[0027] Acrylate raw rubber is the Vamac GLS ethylene acrylate rubber that U.S. DuPont Company produces in the present embodiment; The supplier of carbon black ST1120 is Shanghai Eichuang Company; Stearic acid is produced by Malaysia Southern Oil Company; 4,4' bis( Phenylisopropyl)diphenylamine is anti-aging agent 445 (CAS No.: 10081-67-1) produced by Jiangsu Huada Chemical Group Co., Ltd.; processing aid VAM (CAS No.: 63231-60-7), processing aid The supplier of 1...

Embodiment 2

[0038] A low-pressure variable ethylene acrylate rubber material resistant to ultra-low temperature and high temperature oil in this embodiment, its mass ratio is as follows: 100 parts of ethylene acrylate rubber Vamac GLS, 4,4'-bis(phenylisopropyl) di 1.5 parts of aniline, 0.7 parts of processing aid 18D, 0.5 parts of stearic acid, 1.5 parts of processing aid VAM, 5 parts of carbon black ST112085 parts, softening plasticizer EK-705 parts, crosslinking aid HMDC-10.8 parts, vulcanizing agent 1 , 2.2 parts of 8-diazabicyclo[5.4.0]undec-7-ene.

[0039] The source of each component raw material of this embodiment is identical with embodiment 1.

[0040] The process of preparing low-pressure variable ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil in this embodiment is as follows:

[0041] Step 1. Master batch mixing: According to the above formula, prepare materials, and send the raw materials except the vulcanizing agent 1,8-diazabic...

Embodiment 3

[0051] A low-pressure variable ethylene acrylate rubber material resistant to ultra-low temperature and high temperature oil in this embodiment, its mass ratio is as follows: 100 parts of ethylene acrylate rubber Vamac GLS, 4,4'-bis(phenylisopropyl) di 2.5 parts of aniline, 0.3 parts of processing aid 18D, 1.5 parts of stearic acid, 0.5 parts of processing aid VAM, 15 parts of carbon black ST1120115 parts, softening plasticizer EK-7020 parts, crosslinking aid HMDC-11.6 parts, vulcanizing agent 1 , 2.4 parts of 8-diazabicyclo[5.4.0]undec-7-ene.

[0052] The source of each component raw material of this embodiment is identical with embodiment 1.

[0053] The process of preparing low-pressure variable ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil in this embodiment is as follows:

[0054] Step 1. Master batch mixing: According to the above formula, prepare materials, and send the raw materials except the vulcanizing agent 1,8-diaza...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
flash pointaaaaaaaaaa
freezing pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-pressure variation ethylene acrylate rubber material resistant to ultra-low temperature and high-temperature oil, and a preparation method thereof, and belongs to the technical field of rubber sealing pieces. The ethylene acrylate rubber material comprises 100 parts of ethylene acrylate rubber Vamac GLS, 1.5 to 2.5 parts of 4,4'-bis(phenyl isopropyl) diphenylamine, 0.3 to 0.7 part of a processing aid 18D, 0.5 to 1.5 parts of stearic acid, 0.5 to 1.5 parts of a processing aid VAM, 85 to 115 parts of carbon black ST1120, 5 to 20 parts of a softening plasticizer EK-70, 0.8 to 1.6 parts of a cross-linking aid HMDC-1 and 2 to 2.4 parts of vulcanizing agent 1,8-diazabicyclo[5.4.0]undec-7-ene. The preparation method of the ethylene acrylate rubber material comprises the steps of mixing of a master batch, post vulcanization of the master batch and vulcanization. The prepared ethylene acrylate rubber material can meet requirements of VW TL52329 technical indexes, and has the characteristics of ultra-low temperature resistance, high-temperature oil resistance, low pressure variation and low cost.

Description

technical field [0001] The invention relates to the technical field of rubber seals, more specifically, to a low-pressure variable ethylene acrylate rubber material resistant to ultra-low temperature and high temperature oil and a preparation method thereof. The rubber material of the invention not only meets the VW TL52329 standard, but also has It has the characteristics of ultra-low temperature resistance, high temperature oil resistance, low pressure change, and low cost. Background technique [0002] With the rapid development of the automobile industry and the harsh requirements of the use environment, the requirements for rubber seals are getting higher and higher, especially the low temperature resistance. Rubber seals with poor low temperature resistance tend to cause oil leakage from automobile engines due to losing their sealing ability in low temperature environments. In order to avoid engine oil leakage caused by the failure of rubber seals, automobile OEMs oft...

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): C08L23/08C08L67/00C08K13/02C08K5/18C08K5/09C08K3/04C08K5/3462C08J3/24
CPCC08L23/0869C08L67/00C08K5/18C08K5/09C08K3/04C08K5/3462
Inventor 徐海潮吴会会
Owner 南京金三力高分子科技有限公司
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