Preparation method of rigid polyurethane foam heat insulation and energy saving material

Abstract

The invention provides a preparation method of a rigid polyurethane foam heat insulation and energy saving material. The preparation method comprises the following steps of S1, preparing a black material and a white material with the weight ratio being (1.1-1.2) to 1, wherein the black material is isocyanate, and the white material is prepared by mixing the following raw materials in parts by weight: 70-95 parts of polyether polyol, 15-25 parts of deionized water, 6-9 parts of expanded vermiculite, 3-6 parts of acrylic resin, 2-3 parts of organosilicon oil foam stabilizer, 3-6 parts of rock wool fiber, 2-6 parts of bagasse fiber, 5-9 parts of nanometer calcium carbonate, 0.1-0.3 part of N,N-dimethyl cyclohexyl amine and 4-6 parts of modified tin catalyst; and S2, uniformly mixing the whitematerial in advance, then mixing the black material and the white material, foaming a mixture with a high-pressure foaming machine, injecting a foamed product into a die, and performing formation toobtain the rigid polyurethane foam heat insulation and energy saving material. The preparation method can reduce use of a chemical solvent and improves the heat insulation performance of a whole polyurethane material at the same time.

Description

Technical field [0001] The invention relates to the field of building construction, in particular to a preparation method of a polyurethane rigid foam thermal insulation and energy-saving material. Background technique [0002] Polyurethane has the advantages of good waterproof performance, good heat preservation performance, and good adhesion performance, and has excellent mechanical properties, good electrical properties, acoustic properties and chemical resistance. It is particularly remarkable that its thermal conductivity is the lowest among all organic materials. Therefore, it has a very wide range of applications, almost being applied to all sectors of the national economy. It currently covers many engineering fields such as furniture, automotive interiors, building insulation, home appliances, etc., especially in terms of building insulation, due to the world's energy shortage and energy-saving goals. In terms of construction, it is not only widely used in industrial buil...

AI Technical Summary

Problems solved by technology

[0003] However, the current polyurethane materials need to use more chemical solvents, the cost is high, and the stability is not good enough, which has a certain impact on the thermal insulation performance