Polyurethane system materials are mainly divided into two components: isocyanate and combined polyether, which are commonly known as black materials and white materials. So what kind of materials are they and where can they be used? Next, Xiaoheng will briefly talk to you about polyurethane system materials.
The black material in the polyurethane system material is a mixture of isocyanate and diphenylmethane diisocyanate containing a certain amount of higher functionality, and it is a brown liquid at room temperature. Due to its unique composition, it has good foam fluidity, and is also suitable for the manufacture of products with strict requirements for the fluidity of foamed stock solution, and is one of the main raw materials for the formation of polyurethane rigid foam. It can be widely used in the manufacture of polyurethane rigid foam insulation materials; It can also be used in coatings, adhesives, impermeable plugging, structural foams, microporous integral skin foams, automobile bumpers, interior parts, high-resilience foams, synthetic wood and other fields.
Of course, polyurethane system material polyether is also known as white material. Polyurethane system material is a polymerization reaction after mixing black and white materials in proportion to generate polyurethane rigid foam with independent closed-cell structure, which is an ideal organic low-temperature thermal insulation material: it has the advantages of small thermal conductivity, excellent thermal insulation, heat preservation and waterproof performance, light weight, low load, energy saving and shockproof, strong adaptability, etc., and can be prefabricated or sprayed on site. It can be used for thermal insulation and cold insulation of refrigerated trucks, storage tanks, pipelines, cold storage, beer fermentation tanks, fresh-keeping barrels, thermal insulation and waterproofing of housing construction, and is also suitable for prefabricated polyurethane sheets, tube shells, curved plates, etc.
