Catalytic complex for preparing isocyanurate foam from bagasse ployol

Abstract

The invention relates to a catalytic complex for preparing isocyanurate foam from bagasse ployol comprising the constituents (by mass ratio) of solvent 100 parts, foaming catalyst 0-20 parts, chain growth catalyst 1-15 parts and foam stabilizer 15-60 parts. The catalytic compound is suitable for the water foaming system of cane trash polyhydric alcohols, the reaction speed can be regulated well.

Description

technical field

[0001] The invention relates to a catalytic composite, in particular to a catalytic composite for preparing polyurethane foam from bagasse polyol. Background technique

[0002] There are three main types of reactions in the synthesis of polyurethane foams, namely, chain growth reactions, cross-chain reactions, and gas generation reactions. The molecular chains generated by the chain growth reaction form a polymer with a network structure through the cross-chain reaction, which becomes the meridians and skeleton of the foam, while the cells generated by the foaming reaction are distributed among them. If the three types of reactions are coordinated, the foam can be formed. The body provides good elasticity, strength and density, otherwise, the foam will be hollow or even collapsed. In the absence of a catalyst, the chain growth reaction and the foaming reaction are dominant in the foaming process, and the speed of the cross-chain reaction is quite different f...