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

Nitrile rubber composition and foaming material thereof

A technology for nitrile-butadiene rubber and a composition is applied in the field of materials, can solve the problems of low production efficiency, insufficient cross-linking density, long vulcanization time, etc., achieves low closed cell rate, improved anti-aging and flame-retardant properties, and a preparation method. Simple and easy effects

Active Publication Date: 2019-06-14
EAST CHINA UNIV OF SCI & TECH
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crosslinking density of this vulcanization system is not enough, although the resilience is good, but the strength is not enough, and the vulcanization time is long, the actual production efficiency is not high

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
  • Nitrile rubber composition and foaming material thereof
  • Nitrile rubber composition and foaming material thereof
  • Nitrile rubber composition and foaming material thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment and

[0042] Embodiment and comparative example:

[0043] Prepare various raw materials of foam materials according to the formula shown in Table 2; mix polyvinyl chloride and stabilizer thoroughly, add plasticizer, place in an oven at 80°C for 4 hours, and stir once every half hour to make polyvinyl chloride The plasticizer is fully absorbed, and the polyvinyl chloride fully absorbed by the plasticizer is fluffy but has no damp feeling. Cut the nitrile rubber into small pieces and put them into the internal mixer, the mixing temperature is 130°C and the speed is 100r / min, after masticating for 3 minutes, add the plasticized polyvinyl chloride, anti-aging modifier, anti-aging agent, and then knead After 5 minutes, the material was discharged to obtain a mixed rubber material.

[0044] Further, prepare the vulcanizing agent, vulcanization activator, vulcanization accelerator, and foaming agent according to the formula shown in Table 3-4. On the open mill at room temperature, add ac...

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
decomposition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention provides a nitrile rubber composition, and the composition is mainly prepared from the following raw materials in parts by weight: 200 parts of nitrile rubber; 10-40 parts of phenolic resin; 10-30 parts of polyvinyl butyral; and 30-40 parts of modifier. The invention uses phenolic resin as a vulcanizing agent to overcome the problem that sulfur corrodes pipes and causes the pipes toturn black when the material is taken as an insulation layer of metal pipes, especially copper pipes and zinc-coated steel pipes and the like; and no corrosion or blackening will occur in contact or indirect contact with electronic circuit boards or other metal products with a copper or silver cladding. Adding a variety of anti-aging modifiers can maintain the elasticity for a long time without cracking. The foaming materials made from the material can be used in packaging, construction, building materials, electronics, transportation, agriculture and other fields.

Description

technical field [0001] The invention relates to the field of materials, in particular to a nitrile rubber composition. Background technique [0002] At present, rubber and plastic foam materials have been widely used in the fields of air conditioners, refrigerators and other household appliances and outdoor pipe insulation and electronic instruments. Most of the existing rubber and plastic foam materials are sulfur vulcanized. In actual use, metal pipes are often corroded and blackened, which not only affects the appearance but also shortens the service life. [0003] At the same time, the existing rubber and plastic foam materials are prone to aging at high temperatures, thereby losing elasticity or even cracking, resulting in a decrease in thermal insulation performance and affecting the use effect. Moreover, the existing foam materials have poor flame retardancy and are difficult to apply to some special places or working conditions. [0004] The invention patent with t...

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): C08L9/02C08L61/06C08L29/14C08L27/06C08L23/28C08L91/06C08K13/02C08K5/098C08K3/22C08K5/21C08J9/10
Inventor 汪大贤陆冲
Owner EAST CHINA UNIV OF SCI & TECH
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