Rubber-plastic blending foam material and preparation method thereof

Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a rubber-plastic blending foam material and a preparation method thereof. The rubber-plastic blending foam material is prepared from components in parts by weight as follows: 25-35 parts of a rubber-plastic blending material, 5-8 parts of a foaming agent, 0.05-0.3 parts of a vulcanizing agent, 1.5-1.8 parts of an accelerant, 25-35 parts of filler, 5-8 parts of carbon black, 0.5-1 part of paraffin, 15-20 parts of chlorinated paraffin, 0.1-0.2 parts of stearic acid, 1-2 parts of epoxy soybean oil,0.3-0.5 parts of zinc oxide, 0.5-1 part of polyethylene glycol and 0.1-0.5 parts of an anti-aging agent. By means of proportion optimization selection of the components, content of chlorine ions in the obtained rubber-plastic blending foam material is lower than 400 ppm, and after a copper pipe is wrapped with the material and used for 240 h at the temperature of 60 DEG C and humidity of 95% plusor minus 3%, the color of the copper pipe can be close to that of a copper tube which is not wrapped with the rubber-plastic blending foam material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a rubber-plastic blended foam material and a preparation method thereof. Background technique [0002] Rubber foam materials have excellent properties such as light weight, low material consumption, sound insulation, shock absorption, and high specific strength. Compared with non-foamed base materials, all aspects of performance have been greatly improved, such as impact strength. 6-7 times, the toughness can be increased by 4 times, and the fatigue life can be extended by 5 times, and rubber foam materials with different special properties can be prepared by modifying them such as blending, filling, and reinforcement to meet various purposes. demand. [0003] Nitrile rubber is a synthetic rubber produced by emulsion polymerization of butadiene and acrylonitrile, referred to as NBR. Nitrile rubber is mainly produced by low-temperature emulsion polymerizati...

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Problems solved by technology

[0006] However, the nitrile rubber microporous foam material provided in the above-mentioned patent documents will have chloride ions to separate out during use. When used in the technical field of heat preservation and cold preservation, it is often wrapped on the outside of copper pipes for heat preservation and cold preservation. After a period of time, the copper pipe will be corroded and blackened, which will affect the service life of the pipeline

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