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Low temperature resistant and oil proof nitrile butadiene rubber-modified butadiene rubber (BR) blend material and preparation method thereof

A technology of nitrile rubber and butadiene rubber, which is applied in the field of rubber to achieve the effect of improving compatibility, good mechanical properties and prolonging service life

Inactive Publication Date: 2015-09-09
JILIN ELECTRIC POWER RES INST LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different polarity of the two, according to the principle of similar compatibility, the compatibility of the two is not good, so the mechanical properties of the glue used together are reduced.

Method used

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  • Low temperature resistant and oil proof nitrile butadiene rubber-modified butadiene rubber (BR) blend material and preparation method thereof
  • Low temperature resistant and oil proof nitrile butadiene rubber-modified butadiene rubber (BR) blend material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0025] Weigh each component according to the formula, masticate the nitrile rubber on the double-roller mill, add maleic anhydride grafted butadiene rubber according to the formula ratio, and after the two are blended and covered with rolls, add zinc oxide and stearic acid in turn , anti-aging agent, 1 / 2 carbon black, accelerator, 1 / 2 carbon black, plasticizer, sulfur, temperature 45°C-55°C, after mixing evenly, thin-pass 6 times of filming, park at room temperature for 24 hours, and place on a plate Vulcanize on a vulcanizing machine at a temperature of 160°C for 20 minutes and a pressure of 10Mpa.

[0026] The formula of the present invention will be further described below in conjunction with specific examples:

Embodiment 1

[0029] The preparation process of Example 1 is as follows: masticating nitrile rubber on a double-roller mill, and adding maleic anhydride grafted butadiene rubber after rolling, and adding zinc oxide, hard Fatty acid, anti-aging agent, 1 / 2 carbon black, accelerator, 1 / 2 carbon black, plasticizer, sulfur, the temperature of the front roll is 45°C, and the temperature of the back roll is 55°C. Park at room temperature for 24 hours, and vulcanize on a flat vulcanizing machine at a temperature of 160°C for 20 minutes and a pressure of 10Mpa.

[0030] Example 2

Embodiment 2

[0032] Example 3

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Abstract

Belonging to the technical field of rubber, the invention provides a low temperature resistant and oil proof rubber seal material and a preparation method thereof. The rubber seal material includes nitrile butadiene rubber, modified butadiene rubber, zinc oxide, stearic acid, an antioxidant, carbon black, sulfur, an accelerator, and a plasticizer, wherein the sum of nitrile butadiene rubber and modified butadiene rubber is 100 parts. The preparation method of the material consists of: subjecting nitrile butadiene rubber to plastication on an open mill, then adding modified butadiene rubber to conduct mixing, then adding 1 / 2 carbon black, zinc oxide, stearic acid, the antioxidant, 1 / 2 carbon black, the plasticizer and a curing agent in order, carrying out tight milling and sheet extrusion, conducting standing for 24h, and vulcanizing the rubber sheet. While guaranteeing oil proofness and ageing resistance, the rubber seal material provided by the invention also significantly improves the low temperature resistance of the seal material and can be used as the seal material for field equipment in cold regions.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a low-temperature and oil-resistant rubber sealing material and a preparation method thereof. Background technique [0002] With the development of modern machinery industry, the demand for rubber sealing products continues to increase. The lowest temperature in winter in Northeast and Northwest my country is below -40°C. In these areas, the winter is cold for a long time and the temperature difference between day and night is large. There are a lot of power, petroleum, chemical and other equipment exposed to the natural environment. Sunshine, compared with southern China, has to withstand the test of severe cold. In these devices, there are a large number of rubber seals. Although the seals are small, they play a decisive role in the normal operation of the equipment. Rubber parts in these areas are prone to failure due to low temperature brittleness and failure in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L51/04C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06C08K5/14C08K5/47C08K5/40C08K5/3437C08K5/18
CPCC08L9/02B29C35/02
Inventor 董添程桂茹冷传东李桂娟
Owner JILIN ELECTRIC POWER RES INST LTD
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