摘要
在ＰＶＡ与甲醛反应凝胶之前终止反应，可取得较大缩醛度，并降低了胶冻的温度，提高了高浓度ＰＶＡ缩甲醛胶液的耐低温性。
Reactiom of PVA With formal endedyprior to gelating, greater acetalation could be obtained and gelatum temperature was reduced resulting in improving cryogenic properties of high concentration PVF sol.
出处
《化学建材》
1996年第4期159-160,共2页
Chemical Materials for Construction
关键词
PVA
甲醛
胶粘剂
低温
凝胶时间
Polyvinyl alcohol
modification
cryogenic properties
gelati+ng time
