无腐蚀性酚醛泡沫的制备

Phenolic foam is a new type of thermal insulation material, and is of very broad application prospects for its light weight, heat insulation, fire-retardant and other advantages. In this paper, the phenolic foam is preparated by normal-temperature method and high-temperature method, and the results of the two different methods are compared. In order to flame retardant, the compressive strength, thermal stability of the phenolic foam preparated by high-temperature method are markedly improved. Because in the high temperature method no acid curing agent is added, the acid corrosion problem of the phenolic foam preparated by normal-temperature method is solved, so it is a kind of corrosiveless material.