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以三聚氰胺、尿素和甲醛为主要原料,制备了MUF(三聚氰胺-尿素-甲醛共缩聚树脂)。三聚氰胺的引入可赋予MUF相对较优的性能;通过考察不同条件下MUF的热分解过程,可综合评价其耐热性能。研究结果表明:在N2气氛中,无固化剂时液态MUF的600℃残炭率高于固态MUF;当m(MUF)∶m(氯化铵)=100∶1时,液态MUF和固态MUF的热分解过程不尽相同,储存时间对液态MUF的耐热性影响不大,但其最终残炭率随储存时间延长而略有增加。
With melamine, urea and formaldehyde as the main raw material, MUF (melamine - urea - formaldehyde co-condensation resin) was prepared. The introduction of melamine can give better relative performance of MUF. The thermal decomposition performance of MUF under different conditions can be evaluated comprehensively. The results show that the carbon residue ratio of liquid MUF at 600 ℃ is higher than that of solid MUF in the absence of curing agent under N2 atmosphere. When MUF (MUF) = 100:1, the liquid MUF and solid MUF The thermal decomposition process is not the same, storage time on the thermal resistance of liquid MUF little effect, but the final carbon rate of carbon residue increased slightly with the storage time.