Light high-strength flame-retardant weather-resistant continuous fiber reinforced thermoplastic composite plate and preparation method thereof

Abstract

The invention provides a light high-strength flame-retardant weather-resistant continuous fiber reinforced thermoplastic composite plate and a preparation method thereof. The composite plate comprisesa surface layer, a core layer, a bottom layer as well as a first weather-resistant coated layer and a second weather-resistant coated layer, wherein the surface layer, the core layer and the bottom layer are sequentially arranged; both the surface layer and the bottom layer are made of a flame-retardant continuous fiber reinforcing thermoplastic resin prepreg tape roll; the core layer is made ofa flame-retardant foamed material; both the first weather-resistant coated layer and the second weather-resistant coated layer are made of a weather-resistant coating. The preparation method of the composite plate comprises the following steps: putting the surface layer, the bottom layer and the core layer into a double-steel belt press for hot pressing combination, further carrying out cold pressing combination, spraying the weather-resistant coating to form the first weather-resistant coated layer and the second weather-resistant coated layer, and cutting, thereby obtaining the product. Theproduct provided by the invention has the characteristics of light weight, high strength, heat preservation, flame retardancy, weather resistance, thermal insulation, sound insulation, and the like, and then can be widely applied to fields such as door plates and top plates of bullet trains, high-speed trains and passenger cars, side wall plates and top plates of refrigerators, and heat preservation plates of refrigeration houses.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a light-weight, high-strength, flame-retardant and weather-resistant continuous fiber-reinforced thermoplastic composite plate and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of science and technology, the demand for composite sandwich panels in fields such as construction, transportation, and prefabricated houses is increasing, and various types of composite sandwich panels have emerged as the times require. Not only is the structure and panel style ingenious, but also the function has undergone earth-shaking changes. People not only require smooth and beautiful appearance and reliable quality, but also require light weight, high strength, flame retardancy, heat preservation, heat insulation, sound insulation, corrosion resistance and other properties. [0003] At present, the composite sandwich...

AI Technical Summary

Problems solved by technology

However, metal plates have high density, poor corrosion resistance, and poor heat insulation effect; wooden plates are flammable and easy to absorb water and damage; glass steel plates have high density, high pollution, and cannot be recycled

Recently, continuous fiber-reinforced thermoplastic composite sandwich panels have become an application trend in the market. Existing thermoplastic composite sandwich panels are generally bonded with adhesives, but this process is cumbersome, polluting, and prone to degumming during use. Delamination affects service life

Patent CN204451342U discloses a continuous fiber-reinforced composite sheet. The surface layer is made of longitudinally continuous fiber-reinforced thermoplastic composite material tape and weft-direction continuous fiber-reinforced thermoplastic composite material tape through warp and weft weaving. low quality

Patent CN104175612B discloses a continuous glass fiber reinforced polypropylene thermoplastic honeycomb sheet and its preparation method. The surface layer is made of modified PP film and thermoplastic glass fiber fabric layer. The impregnation effect of this method is not good, and the product quality is poor

Moreover, the existing continuous fiber-reinforced thermoplastic composite sandwich panels have poor weather resistance. After 2-3 years of outdoor use, serious color differences appear on the surface, and even fiber exposure occurs, which affects the service life.

Images