Polyurethane reinforced composite material and preparation method thereof

Abstract

The invention belongs to the technical field of building decoration materials, and relates to a polyurethane reinforced composite material and a preparation method thereof. The preparation method comprises the following steps: preparing a polyurethane coating; soaking glass fiber cloth with the prepared polyurethane coating, covering the upper surface of obtained foamed PU cloth with glass fiber cloth after treatment is completed, and drying and molding to form a glass fiber PU composite layer; diluting the prepared polyurethane coating, coating the diluted polyurethane coating on the upper surface of the glass fiber PU composite layer to form a polyurethane coating layer, drying to obtain a pre-finished product, and carrying out composite material post-treating. According to the preparation method, thermosetting PU and thermoplastic PU are used for preparing composite veneer materials for the first time, the obtained product is a novel composite material, and the polyurethane reinforced composite material has good hardness and appearance, high wear resistance and low thickness on the basis that the mechanical strength and tensile strength of the polyurethane material are reserved.

Description

technical field [0001] The invention belongs to the technical field of building decoration materials, and relates to a polyurethane reinforced composite material and a preparation method thereof. Background technique [0002] GEMP stands for Ground Environment Multifunctional Plastics. It is based on a compound system of a variety of elastomer-toughened resins and polymers, and fiber fabrics are used as reinforcement materials to produce molded ground environment multifunctional materials. As a multi-layer composite material, it is mostly used for floors in places with traffic flow and large flow of people. Such composite materials mostly use epoxy resin and PVC, such as the Chinese invention patent [CN201010593665.X] epoxy and PVC composite flexible veneer material and preparation method that the inventor previously applied for. This patent utilizes the superior physical and chemical properties of epoxy resin , and the excellent flexibility of PVC coating is used as the bo...

AI Technical Summary

Problems solved by technology

However, polyurethane materials such as PU cloth are soft and have low hardness, and the wear resistance is difficult to meet the standard for floor use. At the same time, the bonding degree of epoxy materials and PU cloth is poor, so it is still blank to use polyurethane as the main raw material to prepare multi-layer composite materials.

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