Structure type flame-proof ricinus oil based polylol and uses in polyurethane foam

Abstract

The invention relates to a structural type flame retardant castor oil base polylol and the application thereof in urethane foam. The structural type flame retardant castor oil base polylol is brominated castor oil prepared by the reaction between the castor oil and bromine, or is obtained by ester exchange reaction between the brominated castor oil and low molecular alcohol. The rigid polyurethane foam prepared by adopting the two structural type flame retardant castor oil base polylols has the advantages of obviously improved flame retardance as well as dropping no liquid, keeping the shape and being low in smoke density when in combustion, etc. The invention can be used for producing the products such as polyurethane thermal insulating material, damping material, sealing material, etc.

Description

technical field

[0001] The invention relates to a structural flame-retardant castor oil-based polyol and its application in polyurethane foam. More specifically, it uses the double bond in the castor oil molecule to add bromine to form a polyol with good flame-retardant performance. Castor oil based polyol and used as polyol component in polyurethane foam. Background technique

[0002] Polyurethane is a kind of high polymer containing carbamate group (-NHCOO-) in its molecular chain. With the different raw materials, additives and process conditions during synthesis, products with different properties can be synthesized, such as foam plastics, rubber, coatings, adhesives, elastic fibers, etc.

[0003] In the past 20 years, my country's polyurethane industry has developed rapidly. Because the product has very low thermal conductivity and water vapor permeability, light weight, high specific strength, and it has strong adhesion to paper, metal, wood, cement board, brick wall...