Preparation method of pvc foam fireproof board

Abstract

The invention discloses a preparation method of a PVC (polyvinyl chloride) foaming fire-proof plate. The preparation method includes the steps: providing foam substrates, placing the foam substrates in a sanding machine for sanding, and then removing dust on surfaces of the foam substrates; stacking the sanded and dust removed foam substrates together; respectively coating two surfaces of each foam substrate with resin for binding, and enabling the resin to automatically dry; coating two surfaces of each foam substrate with fire-proof layers to form intermediate products; stacking a plurality of intermediate products together, and naturally pressing the intermediate products for 2-30 minutes; placing the intermediate products into a cold press machine for cold pressing for 5-6 hours; placing the cold pressed intermediate products at the room temperature to naturally solidify and derive for 2-5 days to form semi-finished products; cutting spare parts of margins of the semi-finished products, and removing burr on the surfaces of the semi-finished products to obtain the PVC foaming fire-proof plate. The method is simple in technology, and the produced fire-proof plate is excellent in fire-proof performance, stable in structure and not easy to peel.

Description

technical field [0001] The invention relates to the technical field of PVC foam fireproof boards, in particular to a preparation method of PVC foam fireproof boards. Background technique [0002] In a broad sense, fireproof materials include partition materials, ceiling materials, furniture materials, floor materials, etc. Among them, the ceiling material and compartment material are quite important, but they are often overlooked by people. Most of today's residential buildings are high-rise residential buildings. In order to reduce the load-bearing weight of high-rise buildings, the compartments are often designed with lightweight design. Most foreign countries use polystyrene boards without flame-retardant treatment. The inner layer The barbed wire layer is covered outside, and then the cement layer is sprayed on the outermost surface. [0003] Although this kind of compartment achieves the principle of light weight, the outer cement layer is prone to peeling off when ex...

AI Technical Summary

Problems solved by technology

[0003] Although this kind of compartment achieves the principle of light weight, the outer cement layer is prone to peeling off when exposed to high temperature, and then melts the inner polystyrene board that has not been treated for fire protection, making the fire resistance precarious

Although the current composite board has achieved light weight and fireproof performance, it is easy to peel off after being exposed to wind and sun, resulting in a greatly reduced performance.

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