Polyurethane insulation material

Abstract

The invention discloses a polyurethane insulation material, prepared from, by weight, 60-80 parts of diphenylmethane diisocyanate, 40-60 parts of plant fiber-based polyether polyol, 30-50 parts of plant oil-based polyether polyol, 1-3 parts of a catalyst, 1-3 parts of an organic flame retardant, 0.5-1 part of a foaming agent, 1-3 parts of silicone oil, and 6-8 parts of deionized water. The polyurethane insulation material has the advantages of high strength, light weight, low heat conductivity, good size stability, good thermal insulation, and good wear resistance and corrosion resistance; the polyurethane insulation material also has efficient flame retardancy and is energy-efficient and environment-friendly due to the absence of chlorofluorocarbon (CFC) foaming agent; in addition, a preparation method is simple, the cost is low, equipment requirements are low, and the production process is environment-friendly.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a polyurethane thermal insulation 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 insulation material, and its production volume is increasing. It has the advantages of high hardness, high compressive strength, good dimensional stability, light weight, low thermal conductivity, closed cell rate of more than 95%, and good anti-corrosion and wear resistance. It has a wide range of uses, and compared with other foam plastics, it also has the characteristics of non-toxic, odor-free, and temperature-resistant. At the same time, it has strong adhesion to metal, concrete, brick, stone, wood, glass, etc. [0003] In polyurethane rigid foam, the commonly use...

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Problems solved by technology

[0003] In polyurethane rigid foam, the commonly used blowing agent is chlorofluorocarbon (CFC) blowing agent, but because chlorofluorocarbon (CFC) blowing agent has a destructive effect on the atmospheric ozone layer, in order to maintain the ecological environment, international conventions have already made it Strict restrictions and regulations have been imposed on the production and use of

Today, ordinary rigid polyurethane foam (PUF) can no longer meet the requirements of life in terms of dimensional stability, sound insulation and heat insulation performance.

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