摘要
以较高的甲醛 (F) /苯酚 (P)比 (物质的量之比 ) ,采用复合催化剂可以得到高交联密度酚醛树脂。树脂合成过程中应严格控制温度 ;F/P比在 1 6和 1 8时 ,合成反应过程平稳 ,且可以提高酚醛树脂炭化率和玻璃纤维 /酚醛树脂复合材料的抗烧蚀性能。适当的催化剂可以缩短反应时间。
Phenolic resins which had high interlace ratios were synthesized by using complex catalysts and under various ratios of formaldehyde/phenol The delicate temperature control was on disposal in the synthesis processing When the formaldehyde/phenol ratios were in 1 6～1 8,the phenolic resinsablate apparences were ameliorate and their char yields and ablate rates of the composite were relatively ideal Adequacy complex catalysts could curtail the reaction time
出处
《塑料工业》
CAS
CSCD
北大核心
2003年第2期16-18,共3页
China Plastics Industry
