High-hardness butyronitrile rubber material for preventing scorching and preparation method thereof

A nitrile-butadiene rubber, high-hardness technology, applied in the rubber field, can solve problems such as early scorch, and achieve the effects of avoiding scorch, shortening dispersion time, and preventing scorch

Inactive Publication Date: 2018-09-04
南京金三力高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of early scorching of high-hardness nitrile rubber materials in the prior art during the preparation of rubber compounds, the present invention provides a high-hardness nitrile rubber material that does not contain an anti-scorch agent and can prevent scorching during the preparation and vulcanization of mixed rubber. Nitrile rubber material and preparation method thereof

Method used

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  • High-hardness butyronitrile rubber material for preventing scorching and preparation method thereof
  • High-hardness butyronitrile rubber material for preventing scorching and preparation method thereof
  • High-hardness butyronitrile rubber material for preventing scorching and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A kind of anti-scorch high hardness nitrile rubber material of the present embodiment comprises following components:

[0036] 100 parts of nitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 60 parts of N330 carbon black, 20 parts of aerated carbon black, 2 parts of anti-aging agent RD, 1 part of anti-aging agent ZMMBI, 2 parts of flowable dispersant WB222 , accelerator NOBS 1.2 parts, accelerator DM 1 part, sulfur powder 3.0 parts.

[0037] The high hardness nitrile rubber material process of present embodiment preparation anti-scorch is:

[0038] Step 1. Masterbatch mixing: 100 parts of nitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 20 parts of aerated carbon black, 2 parts of anti-aging agent RD, 1 part of anti-aging agent ZMMBI, flow dispersion 2 parts of agent WB222, and 0.5 parts of sulfur powder and 60 parts of N330 carbon black, which were uniformly mixed in advance, were sent to the internal mixer for banburyin...

Embodiment 2

[0043] A kind of anti-scorch high hardness nitrile rubber material of the present embodiment comprises following components:

[0044] 100 parts of nitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 40 parts of N330 carbon black, 40 parts of aerated carbon black, 2 parts of anti-aging agent RD, 1 part of anti-aging agent ZMMBI, 2 parts of mobile dispersant WB222 , 1 part of accelerator NOBS, 1 part of accelerator DM, 3.2 parts of sulfur powder.

[0045] The high hardness nitrile rubber material process of present embodiment preparation anti-scorch is:

[0046] Step 1. Masterbatch mixing: 100 parts of nitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 40 parts of aerated carbon black, 2 parts of anti-aging agent RD, 1 part of anti-aging agent ZMMBI, flow dispersion 2 parts of agent WB222, and 0.5 parts of sulfur powder and 40 parts of N330 carbon black, which were uniformly mixed in advance, were sent to the internal mixer for banbu...

Embodiment 3

[0051] A kind of anti-scorch high hardness nitrile rubber material of the present embodiment comprises following components:

[0052] 100 parts of nitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 50 parts of N330 carbon black, 30 parts of aerated carbon black, 2 parts of anti-aging agent RD, 1 part of anti-aging agent ZMMBI, 2 parts of flowable dispersant WB222 , accelerator NOBS 0.8 parts, accelerator DM 1 part, sulfur powder 3.5 parts.

[0053] The high hardness nitrile rubber material process of present embodiment preparation anti-scorch is:

[0054] Step 1. Master batch mixing: 100 parts of nitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 30 parts of aerated carbon black, 2 parts of anti-aging agent RD, 1 part of anti-aging agent ZMMBI, flow 2 parts of dispersant WB222, and pre-mixed uniformly 0.5 parts of sulfur powder and 50 parts of N330 carbon black were sent to the banbury mixer for banburying for 5 minutes. Rubber m...

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Abstract

The invention discloses a high-hardness butyronitrile rubber material for preventing scorching and a preparation method thereof, and belongs to the technical field of rubbers. The rubber material is prepared from, 100 parts of butyronitrile rubber raw rubber, 5 parts of zinc oxide, 1 part of stearic acid, 40-60 parts of N330 carbon black, 20-40 parts of gas-mixture carbon black, 2 parts of anti-aging agent RD, 1 part of antioxidant ZMMBI, 2 parts of flow dispersant WB222, 0.8-1.2 parts of accelerator NOBS, 1 part of accelerator DM and 3.0-3.5 parts of sulfur powder. Through the improvement ofa formulation and the preparation method, the scorching prevention purpose can be achieved without adding a scorching retarder in the process of preparing the high-hardness butyronitrile rubber. The high-hardness butyronitrile rubber material prepared by the method has hardness of 85 or more than 85 Shore A, elongation at break is not less than 250%, and the obtained butyronitrile rubber materialhas no scorching phenomenon and good process performance.

Description

technical field [0001] The invention belongs to the technical field of rubber, and more specifically relates to a scorching-resistant high-hardness acrylonitrile-butadiene rubber material and a preparation method thereof. Background technique [0002] In the industrial production of rubber, in order to improve production efficiency, maintain good physical properties of rubber, and shorten vulcanization time, carbon black with high reinforcing properties and a vulcanization crosslinking agent that can quickly vulcanize are often used, which will cause rubber to be processed during processing. During the process, the scorch problem of early vulcanization (crosslinking) and deterioration of fluidity and reprocessing occurs due to increased heat generation. Especially in the high-temperature, fast, and efficient processing technology with modern characteristics and the use of compounding agents that are prone to scorch (such as reinforcing resins, methane white system binders, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06
CPCC08K3/04C08K3/06C08K3/22C08K5/09C08K13/02C08K2003/2296C08K2201/014C08L9/02
Inventor 芮巧红吴会会朱自民
Owner 南京金三力高分子科技有限公司
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