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

A technology of foaming rubber and composition, applied in the field of foaming rubber, can solve the problems of poor low temperature resistance and the like

Active Publication Date: 2022-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the problem of poor low temperature resistance caused by the almost closed cells of the foamed material in the prior art, to provide a foamed rubber composition and vulcanized rubber and its preparation method and application

Method used

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

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Embodiment approach

[0048] According to a preferred embodiment of the present invention, the mixing method includes performing one-stage mixing of other components in the rubber composition except foaming agent, auxiliary foaming agent, vulcanizing agent and vulcanization accelerator , and then carry out the second-stage mixing of the first-stage mixing masterbatch and other additives, so that the obtained mixed rubber will not appear scorching and early foaming, which is conducive to later processing and molding, and subsequent processing The product obtained after vulcanization and foaming has better performance in use.

[0049] Preferably, the mixing includes one-stage mixing and two-stage mixing; the one-stage mixing includes activating nitrile rubber, polyvinyl chloride, halogenated butyl rubber, filler, and vulcanization in the foamed rubber composition. Mixing agent, anti-aging agent, plasticizer and heat stabilizer at 60-80°C for 3-5 minutes to prepare masterbatch;

[0050] The two-stage...

Embodiment 1

[0076]The formula of each component involved in the method of the present embodiment is as shown in Table 2 (wherein numerical value is the weight part that obtains on the basis of 100 weight parts of the total amount of nitrile rubber and polyvinyl chloride). The preparation method of the vulcanized rubber S1 of the present embodiment is specifically as follows:

[0077] The first stage of mixing:

[0078] 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, vulcanization activator, 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.

[0079] The second stage of mixing:

[0080] Set the initial temperature of the internal mixer to 50°C, and the rotor speed to 60r / min, add a section of masterba...

Embodiment 2

[0085] The formula of each component involved in the method of the present embodiment is as shown in Table 2 (wherein numerical value is the weight part that obtains on the basis of 100 weight parts of the total amount of nitrile rubber and polyvinyl chloride). The preparation method of the vulcanized rubber S2 of the present embodiment is specifically as follows:

[0086] The first stage of mixing:

[0087] 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, vulcanization activator, anti-aging Mixing agent, plasticizer and heat stabilizer continued for 4.5 minutes, deglue, and parked for 4 hours to obtain a section of masterbatch.

[0088] The second stage of mixing:

[0089] Set the initial temperature of the internal mixer to 50°C, and the rotor speed to 60r / min, add a section of masterbatch, ...

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Abstract

The invention relates to the field of foamed rubber, and discloses foamed rubber compositions and vulcanized rubber as well as their preparation methods and applications. The composition includes a rubber matrix, a filler, a vulcanizing agent, a vulcanization accelerator, a vulcanization activator, a foaming agent and an auxiliary foaming agent, and is characterized in that the rubber matrix contains nitrile rubber, polyvinyl chloride and halogenated butyl rubber. , relative to 100 parts by weight of the nitrile rubber and polyvinyl chloride, the addition amount of halogenated butyl rubber is 25-45 parts by weight. The foamed rubber material made from the above raw materials has a high porosity, good low temperature resistance and shock absorption and sound insulation effect.

Description

technical field [0001] The invention relates to the field of foamed rubber, in particular to a foamed rubber composition, to a vulcanized rubber, and to a preparation method and application of the vulcanized rubber. Background technique [0002] The blending of nitrile rubber and polyvinyl chloride (NBR / PVC) rubber and plastic has been used since the 1950s, and the molding process 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; the general application of NBR / PVC rubber and plastic foaming materials In the packaging of electrical appliances, shock absorption and sound insulation, shoe soles, sports handles, pipeline insulation performance, etc. When rubber is used as a base material alone, the foaming material has a large shrinkage rate but good elasticity. When resin is used as a base ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L27/06C08L15/02C08L45/02C08K13/02C08K3/04C08K3/22C08K5/09C08K5/12C08K5/39C08J9/10C08J9/08
CPCC08J9/103C08J9/08C08J9/0023C08J9/0061C08J9/0066C08J9/0028C08J9/0033C08J2309/02C08J2427/06C08J2415/02C08J2445/02C08J2203/04C08J2203/02C08K13/02C08K3/04C08K2003/2296C08K5/09C08K5/12C08K5/39
Inventor 郑方远刘苹李绍宁段海东乔勋昌刘翠云
Owner CHINA PETROLEUM & CHEM CORP
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