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A kind of acrylonitrile-butadiene rubber that adopts paste system foaming and preparation method

A nitrile rubber and system technology, applied in the field of polymer material preparation, can solve the problems of difficult effective matching of foaming and crosslinking processes, low energy consumption, etc., achieve good environmental friendliness, save raw material costs, and small cell size Effect

Active Publication Date: 2020-07-14
江苏盾王科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the problem that it is difficult to effectively match the foaming and crosslinking process in the foaming process of the traditional method. At the same time, it foams in a non-melted state, with uniform foaming and low energy consumption.

Method used

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  • A kind of acrylonitrile-butadiene rubber that adopts paste system foaming and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of acrylonitrile-butadiene rubber that adopts pasty system foaming and preparation method, its concrete process of preparing foamed acrylonitrile-butadiene rubber is as follows:

[0032] Grind 10kg of semi-vulcanized nitrile rubber (acrylonitrile content is 25-30%, vulcanization degree is 30-40%) to make 100-200 mesh powder, then add 0.5kg cyclopentane, 0.3kg polybutylene Diene, stirred at a speed of 100r / min for 20min to make it evenly mixed to obtain a paste; then add 0.02kg of sulfur, 0.1kg of accelerator D, 1kg of calcium silicate, and 0.5kg of stearic acid into the paste , 0.1kg anti-aging agent RD and 0.05kg salicylic acid, stir evenly, introduce into the mold, make it foam at 50-60°C, wait for the mold to be filled, heat up to 120-130°C to solidify, and demould to obtain foamed Nitrile rubber.

[0033] The foamed nitrile rubber obtained in Example 1 was tested for its density and mechanical properties, and the obtained data are shown in Table 1.

[0034]...

Embodiment 2

[0036] A kind of acrylonitrile-butadiene rubber that adopts pasty system foaming and preparation method, its concrete process of preparing foamed acrylonitrile-butadiene rubber is as follows:

[0037]Grind 12kg of semi-vulcanized nitrile rubber (acrylonitrile content is 25-30%, vulcanization degree is 30-40%) to make 100-200 mesh powder, then add 0.0.6kg cyclopentane, 0.4kg poly Butadiene was stirred at a speed of 100r / min for 30min to make it evenly mixed to obtain a paste; then add 0.024kg sulfur, 0.12kg accelerator TMTD, 1.2kg white carbon black, 0.6kg hard Fatty acid, 0.12kg anti-aging agent D and 0.06kg phthalic anhydride, stir evenly, introduce into the mold, make it foam at 50-60°C, wait for the mold to be filled, heat up to 120-130°C for curing, and release the mold. A foamed nitrile rubber is obtained.

[0038] The foamed nitrile rubber obtained in Example 2 was tested for its density and mechanical properties, and the obtained data are shown in Table 1.

[0039] As...

Embodiment 3

[0041] A kind of acrylonitrile-butadiene rubber that adopts pasty system foaming and preparation method, its concrete process of preparing foamed acrylonitrile-butadiene rubber is as follows:

[0042] Grind 15kg of semi-vulcanized nitrile rubber (the acrylonitrile content is 25-30%, and the degree of vulcanization is 30-40%) to make a powder with a particle size of 100-200 mesh, and then add 0.75kg cyclopentane and 0.5kg polybutylene Diene, stirred at a speed of 90r / min for 20min to make it evenly mixed to obtain a paste; then add 0.03kg of sulfur, 0.15kg of accelerator D, 1.5kg of calcium silicate, 0.8kg of hard Fatty acid, 0.15kg anti-aging agent RD and 0.07kg salicylic acid are mixed evenly and then introduced into the mold to make it foam at 50-60°C. Bubble nitrile rubber.

[0043] The foamed nitrile rubber obtained in Example 3 was tested for its density and mechanical properties, and the obtained data are shown in Table 1.

[0044] As can be seen from the data in Table...

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Abstract

The invention belongs to the technical field of preparation of high-molecular foaming materials and provides butyronitrile rubber foamed by adopting a pasty system and a preparation method. The preparation method comprises the following steps of: preparing the butyronitrile rubber powder into viscous paste by utilizing cyclopentane and polybutadiene, foaming the paste into a foam body with uniform micropores under low temperature, and further vulcanizing at a high temperature to connect the foamed butyronitrile rubber into good-strength foam body in a crosslinking manner. The butyronitrile rubber and the preparation method provided by the invention have the advantages that by in-advance low-temperature foaming, the defect that uniform and stable foaming holes are difficultly formed while foaming and crosslinking under high-temperature melting is overcome, and an excellent technical means is provided for foaming of elastic materials such as rubber and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and provides a nitrile rubber foamed by a paste system and a preparation method thereof. Background technique [0002] Foaming material is also called foaming agent. Foaming agent refers to the foaming substance that gasifies and generates bubbles inside the substance to make it a porous substance, such as making foamed plastics, foamed rubber, foamed resin, foamed food, steamed buns, buns, and bread. , cakes, etc. [0003] There are three common classifications of foaming materials: (1) According to the hardness classification, it can be divided into three categories: soft, hard and semi-hard. (2) According to the density classification, it can be divided into low foaming foam, medium foaming foam and high foaming foam. (3) According to the classification of cell structure, it can be divided into open cell foam material and closed cell foam material. Foams containing most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/14C08L9/02C08L9/00C08K13/02C08K5/09C08K3/06C08K3/36C08K3/34
CPCC08J9/0023C08J9/0061C08J9/0066C08J9/141C08J2203/14C08J2309/02C08J2409/00C08L9/02C08L2203/14C08L2205/02C08L2312/00C08L9/00C08K13/02C08K3/06C08K3/34C08K5/09C08K3/36
Inventor 陈庆昝航
Owner 江苏盾王科技集团有限公司
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