改性豌豆淀粉用于改进玻纤浸润剂的性能

Modified Pea Starch Used for Improvement of Glass Fibre Sizing

以豌豆淀粉为原料,先用异淀粉酶处理,再将酶化的淀粉进行醚化反应,研究淀粉成膜剂的制备条件.考察酶解时间、环氧丙烷用量、醚化时间、反应温度和氢氧化钠用量对成膜剂的性能影响.通过正交试验得到制备淀粉成膜剂的最优条件:酶解时间12 h,环氧丙烷用量4 g,醚化时间16 h,反应温度45℃,氢氧化钠用量0.4 g.拉丝实验结果表明,改性淀粉作为成膜剂用于玻璃纤维浸润剂,可保证拉丝工艺顺利完成.

Pea starch was used as raw material to produce film forming agent in this study.The starch was processed by isoamylase firstly,and then the obtained product was subjected to hydroxypropylation.We studied the effects of enzyme reaction time,the dosage of propylene oxide,etherification time,reaction temperature and the dosage of sodium hydroxide on the performance of film forming agent.The reaction conditions were optimized via orthogonal test as follows： enzyme reaction time was 12 h,propylene oxide 4 g,reaction time 16 h,reaction temperature 45 ℃,sodium hydroxide 0.4 g.The results show that the modified product as the film-forming agent in glass fibre sizing could ensure the successful drawing process.