羧甲基淀粉浆料干法制备工艺的研究

Study of Dry Preparation of Carboxymethyl Starch Size

采用两次加碱法工艺,对经纱上浆用羧甲基淀粉干法制备工艺进行了研究。通过正交和单因素试验,考察了影响合成反应的各种因素。确定了最佳工艺条件:一氯乙酸与淀粉摩尔比为0.27,氢氧化钠与一氯乙酸摩尔比为1.3,碱化比为1.2,碱化时间30 min,碱化温度30 ℃,醚化时间60 min,醚化温度55 ℃。

Dry preparation of carboxymethyl starch for warp sizing by adding alkali twice was studied. The effects on the reaction were investigated by orthogonal and single - factor tests. The optimum conditions of the preparation were as follows: the molar ratio of chloroacetic acid to starch 0.27, the molar ratio of sodium hydrate to chloroacetic acid 1.3, the molar ratio of alkali added twice ( nl : n2 ) 1.2, alkalizing time 30 min, alkalizing temperature 30 ℃, etherifying time 60 min, and etherifying temperature 55 ℃ .