Light composite plate and preparation method thereof

Abstract

The invention discloses a light composite plate and a preparation method thereof. The preparation method comprises the following steps: Step 1, resin, a surfactant, a foaming agent and a firming agent are stirred uniformly at high speed to obtain blending resin liquid; Step 2, filling fiber is added into the blending resin liquid and the mixture is stirred uniformly to obtain blending materials; Step 3, surface layer materials are paved on a flat plate mould and the blending materials are poured into the flat plate mould; after the blending materials flow uniformly, cellular materials are paved and immersed in the blending materials; lastly, the surface layer materials are paved on the cellular materials; the cellular materials are foamed and solidified in the mould at the temperature of 70 DEG C to obtain the light composite plate. According to the composite plate prepared from the method, on one hand, the flame-retardant performance and the heat-insulating property are favorable; on the other hand, the mechanical property of the composite plate can be improved greatly.

Description

technical field [0001] The invention relates to a preparation method of a lightweight composite board material, in particular to a preparation method of a honeycomb structure material and a fiber-reinforced flame-retardant foam composite board. technical background [0002] Today's passenger transport vehicles usually require materials with energy saving, flame retardant, comfortable, and excellent sound insulation properties. This material is mainly used as the floor, wall panels, and roof panels of passenger transport vehicles. Domestic and foreign manufacturers generally use honeycomb structure materials. The material is known for its high strength and light weight. In the patent application number 200510041553, Xue Binkai prepared the core board of the honeycomb composite board by compounding the honeycomb material and the mother board material, but because the honeycomb skeleton is simply used as the middle layer, the product is prone to collapse during use and cannot b...

AI Technical Summary

Problems solved by technology

[0003] The honeycomb composite panels used in the market today are used in a high-frequency vibration environment, which may cause the risk of fracture and collapse of the core board and the mother board, and the sound insulation performance is poor