Heat-insulating polyurethane material

Abstract

A heat-insulating polyurethane material comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1 to 1.05-1.2; the component A comprises the following raw materials in parts by weight: 60-80 parts of polyether polyol, 20-30 parts of organosilicone modified epoxy resin, 20-30 parts of a cyclopentane foaming agent, 2-4 parts of polysiloxane, 1-3 parts of triethylene diamine, 1-3 parts of water, 2-4 parts of a silane coupling agent, 25-35 parts of calcium sulfate whiskers and 5-7 parts of cellulose whiskers; the component B is polyisocyanate. Theflame retardance, the mechanical properties and the high temperature resistance of polyurethane are significantly enhanced; through the addition of a filler, the price of the heat-insulating polyurethane material is reduced to a certain extent, so that the utilization rate of the heat-insulating polyurethane material can be increased.

Description

Technical field [0001] The invention belongs to the technical field of thermal insulation materials, and specifically relates to a polyurethane thermal insulation material. Background technique [0002] Insulation materials commonly used in air conditioning insulation systems mainly include inorganic insulation materials represented by glass wool, rock wool, and perlite, and organic insulation materials represented by polystyrene, polyethylene, and polyurethane materials. Although organic insulation materials have poor flame retardancy, they It has better thermal insulation performance than inorganic thermal insulation materials. With the gradual shortage of energy resources, organic thermal insulation materials with better energy-saving effects are more and more widely used. [0003] Polyurethane insulation material is a kind of foamed plastic produced by multifunctional organic isocyanate and polyether polyol as raw materials under the action of catalysts and other raw materials....

AI Technical Summary

Problems solved by technology

[0003] Polyurethane thermal insulation material is a kind of foam plastic produced by multifunctional organic isocyanate and polyether polyol under the action of catalyst and other raw materials. It is the material with the best thermal insulation performance at present, and its thermal conductivity can be as low as 0.016-0.028w / mk, and has good moisture-proof and hydrophobic properties, long service life, and relatively high safety performance. However, the utilization rate of polyurethane insulation materials in my country is not high, only about 10%. First, it is compared with other organic insulation materials. Compared with inorganic insulation materials, its cost is relatively high. Second, compared with inorganic insulation materials, its flame retardancy, strength and high temperature resistance are poor.