Heating is performed in the phenolicaldehyde mixed liquid preparing process so as to quicken the dissolution.
在制酚醛混合液过程中加热，以加快其溶解速度。
2
Preparation of phenolicaldehyde-epoxy structural adhesive was elaborated and the factors which effect the properties of this adhesive were primarily discussed.
论述了酚醛-环氧结构胶粘剂的制备原理及工艺，讨论了影响酚醛-环氧结构胶粘剂的性能因素。
3
The invention aims to solve the problems of poor fire resistant property and strong brittleness in the prior polyurethane foam and phenolicaldehyde foam respectively.