论文编号:CL025  论文字数:8978,页数:19

 摘要：本文研究增稠剂的合成过程中原料使用的量和反应体系的相关因素，得出以下结论:乳化剂浓度低分散效果差，易产生凝聚而结成块状产物，乳化剂浓度高，产物平均粒径小。单体浓度增加，聚合速率加快，体系粘度增大，单体浓度达到一定程度，若继续增大，由于聚合热不易分散，反应不易控制，甚至会引起爆聚。PH低会降低乳化体系的稳定性，甚至无法乳化，最终形成水包油。随着引发剂用量增加，增稠剂黏度增大。另一方面，引发剂用量增加，反应加剧，链转移也会导致聚合物交联密度增大，从而使黏度下降。白浆打开程度在一定范围内，随TX-10的升高而减少。聚合物的增稠性能对温度的变化非常敏感。温度过低，会导致反应速率和反应活性的下降，温度过高，反应剧烈，易生成大颗粒固体并引起暴聚生成块状的粘性物质。
关键词：增稠剂；合成; 使用量；影响

Abstract: This paper presents a study of synthetic thickener used by the amount of raw materials and the response of the system and related factors of low concentration of emulsifier, easy to produce effect, condense and forming massive high concentration of emulsifier, average size small product.Monomer concentration, polymerization rate increased speed, the system viscosity, monomer concentration degree, if continue to increase due to dispersion polymerization, heat, not easy to control, and even cause explosive.PH lower will reduce the stability of the emulsion system, emulsion, eventually forming cannot even oil-in-water.With the increase of initiator, thickener viscosity.On the other hand, initiator, reaction intensified, chain transfer will result in polymer crosslinking density increases, thereby viscosity drops.White paste open degree within a certain range, TX - 10 and reduce.The thickening properties of polymer are very sensitive to changes in temperature.Temperature is too low, will cause the reaction rate and reactivity, high temperature, and reaction severe spinal into big particles, solid and cause massive cluster generate critical goo
Keywords：Thickener；Synthesis；Usage；Influence
 
目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1 概述 1
 1.2 增稠剂的增稠原理 2
1.3 增稠剂的国内外现状 3
 1.4 增稠剂的发展方向 4
2. 实验部分 6
 2.1 实验原料与仪器 6
 2.1.1 实验原料 6
 2.1.2 实验仪器 6
 2.2 实验方案 7
     2.2.1 交联剂的合成 7
     2.2.2 中和液制备 7
     2.2.3 增稠剂制备 7
     2.2.4 产物性能测试 8
3. 实验结果与讨论 9
 3.1 乳化剂用量的影响 9
 3.2 单体用量的影响 9
 3.3 PH值的影响 10
 3.4 引发剂用量对增稠性能的影响 10
 3.5 转相剂用量的影响 11
 3.6 反应温度的影响 11
4．总结与展望 13
致谢 14
参考文献 15

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