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Foam rubber composition, vulcanized rubber and preparation method and application thereof

A technology of foamed rubber and composition, applied in the field of rubber, which can solve problems such as difficult control and complicated process, and achieve the effects of uniform cells, remarkable low temperature resistance, and low density

Active Publication Date: 2019-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a new foamed rubber composition and vulcanized rubber and its preparation in order to overcome the problems that the prior art method for preparing the foamed material formed by acrylonitrile-butadiene rubber and polyvinyl chloride has a complex process and is difficult to control. Methods and Applications

Method used

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  • Foam rubber composition, vulcanized rubber and preparation method and application thereof
  • Foam rubber composition, vulcanized rubber and preparation method and application thereof
  • Foam rubber composition, vulcanized rubber and preparation method and application thereof

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Embodiment approach

[0047] The present invention has no particular limitation on the mixing method, each component in the foam rubber composition can be mixed at the same time, or several components can be mixed first, and then Add remaining ingredients and continue mixing. According to a preferred embodiment of the present invention, the mixing method includes removing vulcanization agent, vulcanization accelerator, foaming agent, optional foaming aid and optional vulcanization activator from the foamed rubber composition Other components except for one-stage mixing, and then the masterbatch and vulcanizing agent, vulcanization accelerator, foaming agent, optional foaming aid and optional vulcanization activator obtained by one-stage mixing are subjected to two-stage mixing kneading. This can make the composition of the obtained mixed rubber more uniform, and the vulcanized rubber obtained after subsequent vulcanization has better mechanical properties.

[0048] In the present invention, "opti...

Embodiment 1

[0078] The formulations of the components involved in the method of this embodiment are shown in Table 2 (wherein the numerical values ​​are parts by weight relative to 100 parts by weight of the rubber matrix). The preparation method of the vulcanized rubber S1 of the present embodiment is specifically as follows:

[0079] The first stage of mixing:

[0080] Set the initial temperature of the internal mixer to 70°C, and the rotor speed to 70r / min, add nitrile rubber, polyvinyl chloride and brominated butyl rubber into the internal mixer and masticate for 0.5min, then put in carbon black, stearic acid, anti-aging Adding agent, plasticizer and heat stabilizer to continue mixing for 3 minutes, deglue, and park for 4 hours to obtain a section of masterbatch.

[0081] The second stage of mixing:

[0082] Set the initial temperature of the internal mixer to 50°C, and the rotor speed to 60r / min, mix a section of masterbatch, sulfur, accelerator, zinc oxide, foaming agent and foami...

Embodiment 2

[0086] The formulations of the components involved in the method of this embodiment are shown in Table 2 (wherein the numerical values ​​are parts by weight relative to 100 parts by weight of the rubber matrix). The preparation method of the vulcanized rubber S2 of the present embodiment is specifically as follows:

[0087] The first stage of mixing:

[0088] Set the initial temperature of the internal mixer to 60°C, and the rotor speed to 70r / min, add nitrile rubber, polyvinyl chloride and brominated butyl rubber into the internal mixer and masticate for 0.5min, then put in carbon black, stearic acid, anti-aging Adding agent, plasticizer and heat stabilizer to continue mixing for 4.5min, deglue, and park for 4h to obtain a section of masterbatch.

[0089] The second stage of mixing:

[0090] Set the initial temperature of the internal mixer to 50°C, and the rotor speed to 60r / min, mix a section of masterbatch, sulfur, accelerator, zinc oxide, foaming agent and foaming aids ...

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Abstract

The invention relates to the field of rubber and discloses a foam rubber composition, vulcanized rubber and a preparation method and application thereof. The foam rubber composition contains a rubbermatrix, a reinforcing agent, a vulcanizing agent, a vulcanization accelerator, a vulcanization activator and a foaming agent, wherein the rubber matrix contains nitrile-butadiene rubber, polyvinyl chloride and halogenated butyl rubber, and every 100 parts of rubber matrix contains 3-20 parts of halogenated butyl rubber. The preparation method of the vulcanized rubber includes: mixing various components in the foam rubber composition, and vulcanizing the obtained mixed rubber. The vulcanized rubber is low in density, uniform in foam pores and evident in low-temperature resistance while the mechanical performance is guaranteed.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a foamed rubber composition, a vulcanized rubber and a preparation method and application thereof. Background technique [0002] Since the 1950s, the molding process of blending nitrile rubber and polyvinyl chloride (NBR / PVC) rubber and plastic has been developed and perfected. The combination of NBR / PVC rubber and plastic blends can not only reflect the excellent elasticity and oil resistance of NBR, but also combine the excellent ozone resistance and chemical resistance of PVC. [0003] In general, when rubber is used alone as the main frame material, the foam material has a large shrinkage rate but good elasticity; when resin is used alone as the main frame material, the foam material has poor elasticity but small shrinkage rate. The foamed material prepared by rubber-plastic blending has properties such as flexibility and lightness, which are better than those prepared by a single poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L27/06C08L23/28C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09C08J9/10C08J9/08
Inventor 郑方远解希铭刘翠云刘苹王雷雷李绍宁
Owner CHINA PETROLEUM & CHEM CORP
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