A CLOSED CELL PHENOLIC FOAM

摘要

A phenolic foam mixture for producing a substantially closed cell phenolic foam comprises a phenolic resin, a polysiloxane copolymer used as a surfactant, a blowing agent, and a catalyst (polymerization initiator), the polysiloxane copolymer having a polysiloxane content of from 25% to 35% by weight, a polyethylene oxide content of from 50% to 55% by weight and a polypropylene oxide content of from 15% to 20% by weight.