Phenolic resin and polyurethane prepolymer composite foam material and preparation method

Abstract

The invention provides a phenolic resin and polyurethane prepolymer composite foam material and a preparation method. The composite foam material comprises phenolic resin, a polyurethane prepolymer, hole-closed perlite, a surfactant, a foaming agent and a curing agent with the mass ratio of 1:(0.05-0.25):(0.10-0.30):(0.02-0.06):(0.05-0.15):(0.80-0.15); the preparation method comprises the following steps: mixing phenolic resin, the polyurethane prepolymer and various auxiliaries, stirring, then mixing the mixture with the hole-closed perlite, feeding the new mixture into a mould, foaming, curing and carrying out curing forming. The material is light in mass and good in toughness; compared with phenolic foam which does not contain polyurethane, the pulverization rate is reduced by 50%-70%; the heat conductivity coefficient reaches 0.030 W/m.K; the oxygen index reaches 46.5 and the combustion performance reaches the A level. The material is excellent in performance, and the cost is reduced by 20%-30%. The material can be used as a heat-insulation sound-insulation and cold insulation material.

Description

technical field [0001] The invention relates to a composite foaming insulation material of phenolic resin and polyurethane and a preparation method thereof, belonging to the field of polymer materials and building materials. Background technique [0002] With the vigorous implementation of energy-saving and emission-reduction projects in our country, thermal insulation materials have been widely used. The traditional thermal insulation materials polystyrene (PS) and polyurethane (PU) foam have good thermal insulation effect, but they are not good in flame retardancy. At the same time, the collapse produces toxic gases that are harmful to the environment and human beings, and major fires caused by flammable insulation materials have occurred frequently in recent years, causing huge losses. The phenolic foam (PF) thermal insulation material with excellent fireproof performance came into being. The foamed phenolic resin material belongs to the polymer organic rigid foam produc...

AI Technical Summary

Problems solved by technology

[Ma Chengbiao, Zhu Qing. Polyurethane compound modified phenolic foam and its preparation method: China, 101134834A[P].2008-3-5] from Beijing Zhenli High Salary Technology Co., Ltd. disclosed a poly Urethane compound modified phenolic foam and its preparation method, mixing and foaming 100 parts of composite aniline phenolic resin, 23 parts of polyurethane compound and 30 parts of curing agent to obtain phenolic foam with fine cells and high closed cell rate Insulation materials, but the amount of curing agent used in th...