Method for preparing Foam (semi) open cell Rigid Polyurethane or polyisocyanurate modified urethane FOAM; semi Rigid Polyurethane or polyisocyanurate decelda OpenModified urethane; evacuated Insulation Panel and polyisocyanate composition

摘要

The open cell foam method for making a semi-rigid polyurethane or polyisocyanate is modified according to the reaction of polyisocyanate. Under the condition of foam formation, the polyurethane reacts with isocyanate. In this case, the degree of freedom of the component is 21-30% per kilogram It includes an excess star reaction product of organic polyisocyanate and an isocyanate reaction material, including a polychlorinated diphenyl ether, with a quantity between 1000 and 10000, a rated hydroxyl function of 2 to 6, and 10 to 50% hydroxyl by weight.Irino 1. The open cell foam of semi-rigid (semi-rigid) polyurethane and polyisocyanate can be realized by this method. 1. The evacuation insulating board is composed of a filling material, which includes a rigid (semi) depolitano or polycyanate outdoor battery modified with amino ester. A polyisocyanate component that can be used in this method.