摘要
采用酸催化法,以环氧氯丙烷和聚丙二醇400为原料,通过两步法合成聚丙二醇缩水甘油醚。探究了开环反应温度、开环反应时间、闭环反应温度、闭环反应时间、催化剂用量和醇烷比对合成产物性能的影响,确定主要影响因素为醇烷比、开环反应温度和催化剂用量;设计了3因素3水平的正交试验,以产物的环氧值和产率为主要评价指标,涂料染色后的耐刷洗色牢度为辅助指标,评价其交联性能,得到最佳的合成条件为:醇烷比1∶4、催化剂用量0.2 mL、开环反应温度50℃、开环反应时间3 h、闭环反应温度50℃、闭环反应时间4 h。通过傅里叶红外光谱分析认为环氧基已成功接枝到聚醚链上。涂料染色工艺应用研究表明:当焙烘温度120℃时,耐刷洗色牢度达4级,K/S值较高,实现了低温交联的目标。
Acid catalyzed method was used to synthesize poly propylene glycol ether by two steps which based on the reaction of epoxy chloride with propylene glycol 400. The effect of ring opening reaction temperature and time, closed-loop temperature and time, catalyst dosage and the molar ratio of alcohol to alkane on the property of product were explored. The results showed that the molar ratio of alcohol to alkane, ring opening reaction temperature and catalyst dosage were main influence factors. An orthogonal experiment of three factors and three levels was designed. Epoxy value and yield of the product were main evaluating indicators and brushing fastness of pigment dyeing was used as auxiliary indicators for evaluating the performance of linking. The optimizing conditions were the molar ratio of alcohol to alkane 1：4, catalyst dosage 0.2 mL, ring opening reaction temperature 50 ℃, ring opening reaction time 3 h, closed-loop reaction temperature 50 ℃, closed-loop reaction time 4 h. FTIR spectra showed that the epoxy group was successfully grafted onto the polyether chain. The application of pigment dyeing showed that when baking temperature was 120 ℃, the brushing fastness reached to grade 4 and K/S value was high. The goal of low temperature crosslinking was achieved.
出处
《印染助剂》
CAS
北大核心
2017年第6期21-25,共5页
Textile Auxiliaries
关键词
低温交联剂
环氧类结构
环氧值
涂料染色
耐刷洗色牢度
low temperature crosslinking agent
epoxy structure
epoxy value
pigment dyeing
brushing fastness
