Views: 1224 Author: Site Editor Publish Time: 2023-07-08 Origin: Site
Polyurethane is the abbreviation of polyurethane, the English name is polyurethane, it is a polymer material. Polyurethane is an emerging organic polymer material, known as the "fifth largest plastic", because of its excellent performance is widely used in many fields of the national economy. Product applications involve light industry, chemical, electronics, textile, medical, construction, building materials, automobile, national defense, aerospace, aviation... Polyurethane has soft foam and hard foam, soft foam is an open-cell structure, and divided into two types: crusting and non-crusking, and hard foam is a closed-cell structure; The main role of polyurethane soft foam is buffering, commonly used in car cushions, sofa furniture, toys, sound insulation inner village, etc., rigid polyurethane because of its low thermal conductivity, only 0.022 ~ 0.003W / (m*K), equivalent to half of the extruded board, is the lowest thermal conductivity of all thermal insulation materials. Therefore, it is often used in building exterior wall insulation, roof waterproof and thermal insulation integration, cold storage, pipelines, mobile houses, containers and other engineering use.
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