High-strength building wallboard

Abstract

The invention discloses a high-strength building wallboard, which comprises an upper layer, a middle layer and a lower layer, the middle layer is a reinforcement layer; the thickness of the reinforcement layer is 20% to 40% of the high-strength building wallboard, and the reinforcement layer is Metal plate; the upper layer and the lower layer are covering layers, the covering layer is made of wood-plastic material, and the covering layer and the reinforcing layer are bonded by adhesive. The product obtained by the invention can give full play to the high-strength characteristics of engineering plastic nylon, and the mechanical properties such as bending strength and bending elastic modulus are significantly improved. At the same time, the building wallboard of the present invention is used in combination with a thinner metal layer and a wood-plastic material layer, and has higher strength.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a high-strength building wallboard. Background technique [0002] The wall panel is a house structure composed of walls and floors as a load-bearing system. The wall is not only a load-bearing member, but also a room partition. It is the most commonly used and economical structural form in residential buildings. The disadvantage is that the flexibility of the indoor layout is poor. In order to overcome this disadvantage, it is currently developing in the direction of large bays. The wall panel structure is mostly used in houses, apartments, and public buildings such as office buildings and schools. Load-bearing walls of panel construction can be made of bricks, blocks, precast or cast-in-place concrete. Prefabricated reinforced concrete or prestressed concrete hollow slab, channel slab, solid slab for the floor; prefabricated and cast-in-place composite floor; fully ca...

AI Technical Summary

Problems solved by technology

Traditional wood-plastic composite materials use PVC, PE, and PP three general-purpose plastics as base materials, and their strength is not high, so they can only be used in places with low performance requirements. Generally, the bending strength does not exceed 50MPa, so they cannot be used as structural materials.

[0004] Many researchers have studied the use of nylon as a base material to produce wood-plastic composites, but because the melting point of nylon generally exceeds 220°C, and wood fibers contain high-temperature-resistant cellulose (the thermal degradation initiation temperature exceeds 250°C), there are also Contains hemicellulose and lignin whose thermal degradation initiation temperature is lower than 200°C, the processing temperature does not match, and the degradation is serious. Therefore, nylon and cellulose or nanocellulose are generally mixed for extrusion or injection molding, and the production cost is high, and Preparation of cellulose or nanocellulose requires more energy and pollutes the environment