A kind of nitrile rubber composition and its foaming material

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: 2021-07-16
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • A kind of nitrile rubber composition and its foaming material
  • A kind of nitrile rubber composition and its foaming material
  • A kind of nitrile rubber composition and its foaming material

Examples

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Embodiment and

[0042] Examples and contrast:

[0043] The various raw materials of the foam material are prepared according to Table 2; the polyvinyl chloride is well mixed with the stabilizer, adding a plasticizer, placed in an oven at 80 ° C, stirred once every half an hour, allowing polyvinyl chloride The plasticizer is fully absorbed, and the polyvinyl chloride of the plasticizer is fully absorbed by the plasticizer but there is no humidity. Cut the nitrile rubber into small pieces into a small piece, the mixing temperature is 130 ° C to 100R / min, after 3 minutes, add plasticized polyvinyl chloride, anti-aging modifier, anti-aging agent, and then mix 5 min is removed to give a mixed rubber.

[0044] Further, a vulcanizing agent, a vulcanizing active agent, a vulcanization accelerator, a foaming agent is prepared according to the formulation shown in Table 3-4. On the normal temperature open mill, the accelerator, active agent, sulfurization agent is sequentially added after the mixing rubb...

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Abstract

The invention provides a nitrile rubber composition, which mainly contains the following raw materials: 100 parts by weight of nitrile rubber; 10-40 parts by weight of phenolic resin; 10-30 parts by weight of polyvinyl butyral; 30-50 parts by weight of modifier parts by weight. The present invention adopts phenolic resin as vulcanizing agent, overcomes the problem that sulfur corrodes the pipeline when the material is used as the insulation layer of metal pipelines, especially copper pipes, galvanized steel pipes and the like, and causes the pipelines to turn black; When the electronic circuit board or other metal products are in contact or indirect contact, there will be no corrosion and blackening. Adding a variety of anti-aging modifiers can maintain its elasticity for a long time without cracking. The foamed material made of it can be used in packaging, construction, building materials, electronics, transportation, agriculture and other fields.

Description

Technical field [0001] The present invention relates to the field of materials, and more particularly to a nitrile rubber composition. Background technique [0002] At present, the rubber-plastic foaming materials have been widely used in air conditioning, refrigerators and other home appliances and outdoor pipelines and electronic instruments. The existing rubber-plastic foaming material is mostly sulfur sulfur, often in the actual use, there is often a phenomenon that the metal pipe is corroded, which affects the aesthetics and shortened service life. [0003] At the same time, the existing rubber-plastic foaming material is easy to age at high temperatures, thereby losing elasticity and even cracking, causing a decrease in incubation performance, affecting the use. And the existing foam flame retardant performance is poor, it is difficult to apply to some special places or working conditions. [0004] Patent Application No. CN201810562140.6 discloses a low density soft polyvin...

Claims

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Application Information

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Patent Type & Authority Patents(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
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