Rigid foam polyurethane material with integration of heat preservation, water resistance and thermal insulation

Abstract

The invention discloses a rigid foam polyurethane material with integration of heat preservation, water resistance and thermal insulation. The rigid foam polyurethane material with integration of heat preservation, water resistance and thermal insulation is prepared from, by weight, 70-90 parts of polyaryl polymethylene isocyanate, 20-30 parts of diphenylmethane diisocyanate, 30-50 parts of polyether polyol, 1-3 parts of antioxygen, 2-4 parts of ultraviolet light absorber, 0.8-1 part of catalyst, 1-2 parts of fire retardant, 0.6-1 part of foaming agent, 4-6 parts of dimethylsilicone fluid and 12-18 parts of deionized water. The rigid foam polyurethane material with the integration of heat preservation, water resistance and thermal insulation can be applied to multiple fields of water resistance, heat preservation and thermal insulation of high-floor buildings or accessible roofs or roof gardens, repair and transformation of old buildings, and waterproof and heat-preservation engineering of various buildings of pools, swimming pools and the like, has the advantages of high strength, low weight, water resistance, heat preservation, a good thermal insulation effect, good wear resistance and corrosion prevention and the like, and further has an efficient fire retardant ability; moreover, a chlorofluorocarbon (CFC) foaming agent is not used, so that the material saves energy and is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a hard foam polyurethane thermal insulation integrated material. Background technique [0002] Ordinary polyurethane insulation materials generally use polyether polyols with high functionality and high hydroxyl value to react with polyisocyanates to form cross-linked polymers. At present, polyurethane is used as thermal insulation, waterproof, heat insulation and other materials, and its production volume is increasing. As an excellent thermal insulation and energy-saving material, polyurethane rigid foam has great development potential in building energy conservation, and its thermal conductivity is low, only 0.018 -0.024(w / m*k), equivalent to half of EPS, is currently the lowest thermal conductivity of all insulation materials, and has good thermal performance, aging resistance, good chemical stability, excellent moisture and water resistance, and temperature resistance. It...

AI Technical Summary

Problems solved by technology

However, the existing sprayed polyurethane materials only have the function of thermal insulation. During roof construction, in addition to the thermal insulation layer, an additional waterproof layer and thermal insulation layer are required.