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Exhausting auxiliary formula for rubber and preparation method thereof

A technology of additives and formulations, applied in the field of rubber additives, can solve problems such as poor exhaust effect and easy loss

Active Publication Date: 2016-01-27
温州市伟诚橡塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, if the lubricant is used alone, the temperature is high during the vulcanization process, and the lubricant is in a fluid state, which is easily lost during the vulcanization process, resulting in poor exhaust effect

Method used

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  • Exhausting auxiliary formula for rubber and preparation method thereof

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Embodiment Construction

[0039] In terms of the main substances that enhance the fluidity of rubber, polyethylene wax and calcium stearate are selected in the present invention. Polyethylene wax is a common lubricant, especially in improving the internal lubrication performance of rubber. The effect of the rubber, while the molecular weight is small, even if the gap between the rubber molecules is small, it can also promote its fluidity. As a commonly used external lubricant, calcium stearate can maintain the external lubricity of rubber.

[0040] In the lubricant carrier, styrene butadiene rubber, also known as polystyrene butadiene copolymer, is used. Its comprehensive performance and chemical stability are good. Because SBR not only has good compatibility with polyethylene wax, but also has good compatibility with calcium stearate. The three-dimensional network structure formed by vulcanization of styrene-butadiene rubber has benzene rings in the entire chain structure. Therefore, there are gaps in ...

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Abstract

The invention discloses an exhausting auxiliary formula for rubber and a preparation method thereof. Auxiliary master batches are prepared by adding calcium stearate, polyethylene wax, sulfur compounds, fatty acid and nano calcium carbonate in butadiene styrene rubber; the butadiene styrene rubber has the better fluidity at high temperature, the auxiliary is prepared and added in the vulcanizing process of rubber products, the butadiene styrene rubber carries the polyethylene wax and the calcium stearate to serve as a macromolecular lubricating agent among rubber molecules to promote motion among the rubber molecules, and therefore air in the rubber molecules can be exhausted in the vulcanizing process; meanwhile, the polyethylene wax with the lubricating effect can also be adsorbed in the butadiene styrene rubber to play a lubricating role in portions of the rubber products along with flowing of the butadiene styrene rubber; accordingly, the exhausting property of the rubber products in the vulcanizing process can be improved.

Description

Technical field [0001] The invention relates to a rubber auxiliary agent, more specifically, it relates to a rubber exhaust auxiliary agent formula and a manufacturing method thereof. Background technique [0002] The process in which rubber macromolecules react with the crosslinking agent sulfur under heating to form a three-dimensional network structure. The vulcanized rubber is called vulcanized rubber. Vulcanization is the last step in rubber processing, and can get shaped rubber products with practical value. In the rubber network structure, the density of sulfur cross-links determines the degree of vulcanization of the rubber. The latter is judged by the macroscopic physical and mechanical properties of the rubber compound or the change of rubber viscosity in the process practice. [0003] During the vulcanization process, the rubber molecule itself contains air. The vulcanization is carried out at a high temperature. The air inside the rubber molecule will expand to form ...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L23/06C08L91/02C08K5/09C08K3/26C08K5/098B29C47/92B29C48/92
Inventor 章兴武
Owner 温州市伟诚橡塑新材料有限公司