玻纤浸润用羟丙基玉米淀粉的制备

Preparation of the hydroxypropyl corn starch for glass fibre sizing agent

摘要:

以玉米淀粉为原料，酶解处理后，与环氧丙烷进行醚化反应，制备玻纤用淀粉成膜剂。考察了环氧丙烷用量、硫酸钠用量、氢氧化钠用量、醚化时间及醚化温度对成膜剂性能影响。通过正交试验，得到最佳反应条件：醚化时间12h，醚化温度50℃,环氧丙烷4g，氢氧化钠0.24g，无水硫酸钠4.8g。拉丝实验结果表明，该方法制备的改性淀粉能满足玻璃纤维浸润成膜剂的要求。

Abstract:

Corn starch was used as raw material to produce film-forming agent for glass fiber sizing in this study. The starch was modified with isoamylase firstly, and then reacted with epoxypropane. The optimum conditions were obtained via orthogonal text, emphasizing the effects of the dosage of propylene oxide, sodium sulfate and sodium hydroxide, the temperature and the time of etherification. The optimum reaction conditions were obtained: etherification time etherification time 12 h，etherification temperature 50℃, propylene oxide 4g, sodium sulfate 0.24g, sodium hydroxide 4.8g. The results show the scenario could ensure the glass fibre forming process smoothly.