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林业科学 ›› 2009, Vol. 12 ›› Issue (1): 131-135.doi: 10.11707/j.1001-7488.20090123

• 论文 • 上一篇    下一篇

木材胶黏剂用酸解氧化玉米淀粉乳液

时君友1,2,3 顾继友2 王垚2   

  1. (1.北华大学 吉林 132013;2.林业大学 哈尔滨 150040;3.清华大学化学工程系 北京 100084)
  • 收稿日期:2007-08-27 修回日期:1900-01-01 出版日期:2009-01-25 发布日期:2009-01-25

Acid-Thinned and Oxidized Starch Emulsion for Wood-Adhesives

Shi Junyou1,2,3,Gu Jiyou2,Wang Yao3   

  1. (1. Beihua University Jilin 132013; 2. Northeast Forestry University Harbin 150040; 3. Department of Chemical Engineering of Tsinghua University Beijing 100084)
  • Received:2007-08-27 Revised:1900-01-01 Online:2009-01-25 Published:2009-01-25

摘要:

摘 要:采用盐酸为催化剂、过硫酸铵为氧化剂,制备酸解氧化淀粉乳液。淀粉在酸解的同时进行氧化,缩短了反应时间,提高了反应效率。经单因素分析试验,确定优化工艺条件: 淀粉乳液质量百分数35%,反应时间1 h,盐酸浓度0.5 molL-1,反应温度55 ℃, 过硫酸铵用量为淀粉干基质量的2.25%。酸解氧化淀粉具有酸解淀粉与氧化淀粉的双重性质。产物具有黏度低、浓度高、抗凝沉性好特点,可用于木材胶黏剂的制造。

关键词: 关键词:玉米淀粉, 氧化, 酸解, 抗凝沉性, 高浓低黏

Abstract:

Abstract: The acid-thinned and oxidized starch latex was obtained by adopting hydrochloric acid as catalyzer and ammonium persulfate as oxidant. Starch was acid-thinned and was oxidized meanwhile, which shortens reaction time and enhances reaction velocity. The optimum technology conditions obtained by analysis experiment of single element are: 35% of starch latex concentration, 1 h of reaction time, 0.5 molL-1 of hydrochloric acid concentration, 55 ℃ of reaction temperature, 2.25% of amount for dry starch mass. Acid-thinned and oxidized starch has double properties of acid-thinned starch and oxidized starch. The reaction-product had good properties such as low viscosity, high concentration, low retrogradation and would be used to prepare for wood-adhesives.

Key words: Key words: corn starch, oxidized, acid-thinned, low retrogradation, high-concentration and low-viscosity