1·The invention aims to solve the problems of poor fire resistant property and strong brittleness in the prior polyurethane foam and phenolic aldehyde foam respectively.
本发明拟解决现有聚氨酯泡沫阻燃性差，酚醛泡沫酥脆性强的问题。
2·Heating is performed in the phenolic aldehyde mixed liquid preparing process so as to quicken the dissolution.