A kind of heat aging resistant polypropylene composite material and preparation method thereof

Abstract

The invention provides an antioxidant, which comprises modified montmorillonite and antioxidant units containing hindered phenol and alkyl quaternary ammonium salt groups, and the modified montmorillonite is obtained by ion exchange Alkyl ammonium salts containing carbon-carbon double bonds are introduced into the interlayers of montmorillonite. The present invention also provides a heat-resistant aging polypropylene composite material, which is prepared from the following raw materials in parts by weight: 50-100 parts of polypropylene, 0-30 parts of polyolefin elastomer, 0-40 parts of inorganic filler, the above-mentioned 0.1-0.5 parts of antioxidant, 0-0.25 parts of secondary antioxidant, 0.1-0.5 parts of lubricant. The antioxidant overcomes the disadvantages of small-molecule antioxidants such as low thermal stability and easy precipitation, has good antioxidant performance, and has good compatibility with polypropylene. The heat-aging-resistant polypropylene composite material has good heat-aging resistance, is environmentally friendly, and can be widely used in material industries such as automobiles, home appliances, electronics, medical equipment, and packaging.

Description

A kind of heat aging polypropylene composite material and preparation method thereof technical field The invention belongs to polymer composite material technical field, be specifically related to a kind of heat-resistant aging polypropylene composite material and its preparation method. Background technique Because of its excellent performance, polypropylene is widely used in household electronic appliances, automobiles, medical equipment and packaging, etc. industry. At the same time, with the continuous development of science and technology and the continuous improvement of people's living standards, it is necessary to replace steel with plastic. The requirements have become more and more stringent, so polypropylene is usually modified and processed to obtain composite materials with excellent comprehensive properties. and make it meet the normal use requirements. However, due to the variability of the environment, inevitable contact with oxygen in the air, and ...

AI Technical Summary

Problems solved by technology

However, most traditional antioxidants are small molecular compounds. Due to their small molecular weight, they have disadvantages such as low thermal stability, intolerance to solvent extraction, and poor compatibility with polymers, making them susceptible to heat during use. Volatilization, migration to the surface of the material or migration out of the matrix with the increase of use time or contact with solvents will greatly reduce the performance and service life of the material, and even cause environmental pollution

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