A kind of polypropylene-based composite material for cladding metal and its preparation method and application

Abstract

The invention discloses a polypropylene-based composite material for cladding metal and its preparation method and application. Resin matrix composed of vinylene and specific polystyrene, non-surface-treated glass fiber, flame retardant, chain initiator, chain terminator and antioxidant; preparation: weigh each raw material according to the formula, mix and extrude it, and make it; In the extrusion process, a chain initiator and a chain terminator are added in stages; and the application of the above-mentioned composite material in the preparation of a protective cover for cladding metal; the material of the present invention has the characteristics of flame retardancy, light weight and low density, and the linear expansion coefficient and Aluminum, iron, steel and other metals commonly used in daily life are similar. They will not crack when subjected to cold and heat shocks, and will not produce cracks under long-term thermal load working conditions. After being combined with metals, they still have a long service life in complex and changeable environments.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a plastic coating material used for household appliances such as lamps and electronic components, further relates to a composite material using polypropylene as a resin matrix, and in particular relates to a polypropylene based metal coating material. Composite materials and methods for their preparation and applications. Background technique [0002] With the development of home appliances such as lighting materials, the requirements for plastic materials that need to be coated with metal iron, aluminum, and copper are gradually increasing. Plastic-coated metal can not only provide good protection against damage, but also provide good performance protection and thermal protection ( It can avoid scalding caused by metal overheating). Among them, metal-clad plastic generally needs a low thermal expansion coefficient, and at the same time has a certain thermal conducti...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new polypropylene-based composite material for cladding metals, which not only has the characteristics of flame retardancy, light weight and low density, but also has a linear expansion coefficient similar to that of the commonly used in daily life. Aluminum, iron, steel and other metals have similar linear expansion coefficients, so they can be used to cover the shell of related metals and provide protection, and they will not crack under the impact of cold and heat, and will not produce cracks under long-term thermal load working conditions. It still has a long service life in a changing environment, and solves the problem of long-term stable use of electrical device products made of polypropylene-based composite materials in long-term high-temperature and complex environments

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