Heat-aging-resistant shading polypropylene material and preparation method thereof

Abstract

The invention discloses a heat-aging-resistant shading polypropylene material and a preparation method thereof, and belongs to the field of macromolecules. According to the material disclosed by the invention, a flame-retardant component system is formed by the composite flame-retardant synergist of the metal hypophosphite and the polymersome and the brominated flame retardant with an excellent flame-retardant effect, and the system does not generate free radicals and other impurities which are easy to cause degradation of the material at high temperature, so that the flame-retardant property of the material can be effectively guaranteed; meanwhile, a thioether antioxidant and a hindered phenol antioxidant are preferably matched to serve as a heat-aging-resistant component system, so that the degradation effect of the flame-retardant component system can be inhibited, and the material has excellent and long-acting heat aging resistance and can be effectively applied to the field of the lighting industry. The invention further discloses a preparation method of the heat-aging-resistant shading polypropylene material and application of the heat-aging-resistant shading polypropylene material in preparation of household illuminating lamps.

Description

technical field [0001] The invention relates to the field of materials, in particular to a heat-aging-resistant light-shielding polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene material is currently the most widely used general-purpose plastic. In recent years, with the increasing popularity of domestic polypropylene materials, the proportion of polypropylene materials engineering is getting higher and higher. At present, polypropylene materials are widely used in the fields of automobiles, home appliances, electric tools, and electronics, bringing huge cost advantages to the entire industry. [0003] However, the shortcomings of the existing polypropylene material itself are also obvious. Since the molecular chain of polypropylene is composed of short chains such as methylene, the flame retardancy is very poor. During use, especially in electrical and electronic industries, etc. During the processing and use of parts, fla...

AI Technical Summary

Problems solved by technology

[0003] However, the shortcomings of the existing polypropylene material itself are also obvious. Since the molecular chain of polypropylene is composed of short chains such as methylene, the flame retardancy is very poor. During use, especially in electrical and electronic industries, etc. During the processing and use of parts, flame retardant modification of polypropylene materials is required; in addition, most electronic and electrical related parts are processed and used in high temperature environments, and whether they can be used in high temperature environments for a long time is also a big challenge, and polypropylene itself The thermal stability is acceptable, usually adding antioxidants can greatly improve the anti-oxidation performance, but the above-mentioned flame retardant modification (usually adding flame retardants) will greatly deteriorate the anti-oxidation performance of the material, and how to balance thermal aging resistance and flame retardant Performance is a big problem in the existing industry

[0004] In recent years, modified polypropylene materials have been applied in the lighting industry, and light-shielding polypropylene materials have emerged as the times require. However, most of the light-shielding polypropylene materials are flame-retardant HB grades, which have a very low safety rating and a high risk of fire. Large, and some modified shading polypropylene materials with flame retardancy will also lose flame retardancy due to thermal aging in high-temperature environments for lighting applications

Images