Manufacturing technique of PU heat preservation dense plate

Abstract

The invention relates to a manufacturing technique of a PU heat preservation dense plate. A polyurethane foaming heat preservation plate is an ideal heat preservation material enabling wall heat preservation and equipment heat preservation to be corrosion-resistant perpetually, and the heat preservation material is lightest and more convenient to construct. According to the manufacturing technique, high-function polyether polyhydric alcohols and repeated methyl polyphenyl isocyanate are used as main raw materials, under the effects of a catalyst, a foaming agent, a surface active agent and thelike, and the PU heat preservation dense plate is formed through chemical reaction foaming. A polyurethane product has the excellent beneficial effects of light capacity, high strength, heat isolation, sound isolation, inflaming retarding, cold resistance, corrosion prevention, water absorption avoiding, easy, convenient and quick construction and the like, the combustion performance is B1 stage,and the PU heat preservation dense plate has been an indispensable material for industrial sector heat isolation heat preservation, waterproof leakage prevention, sealing and the like of building, transportation, petroleum, chemical engineering, power, cold storage and the like. Heat preservation, heat isolation, load bearing and waterproofing are integrated. The manufacturing technique has the beneficial effects that the unit weight is small, the heat isolation and preservation performance is high, use is flexible, the fireproofing performance is good, environmental protection is achieved, and the bearing capacity is high.

Description

technical field [0001] The invention relates to a production process of a PU thermal insulation dense board. Background technique [0002] The traditional wall insulation board and insulation floor use rock wool board as the core material. Rock wool is widely used in building construction because of its excellent mechanical properties and fire resistance. [0003] However, the rock wool sandwich panel has a porous structure, and moisture can easily penetrate into the core material, resulting in damage and deformation of the core panel; in addition, the rock wool sandwich panel has a low compressive strength, and is easily deformed or even damaged during transportation and use; The thermal conductivity of rock wool sandwich panels is not low, and the heat insulation effect is not good when used as wall panels. Contents of the invention [0004] The object of the present invention is to overcome above-mentioned deficiency, provide a kind of production process of PU thermal ...

AI Technical Summary

Problems solved by technology

[0003] However, the rock wool sandwich panel has a porous structure, and moisture can easily penetrate into the core material, resulting in damage and deformation of the core panel; in addition, the rock wool sandwich panel has a low compressive strength, and is easily deformed or even damaged during transportation and use; The thermal conductivity of the rock wool sandwich panel is not low, and the heat insulation effect is not good when used as a wall panel