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摘要本研究以己内酯、聚乙二醇、五氧化二磷和水为原料，通过改变投料比，改变己内酯的投料量和改变聚乙二醇的分子量来得到不同结构的产物。通过对产物进行磷含量的测定和磷酸酯的含量测定分析产物的结构，最后对产物进行分散性能的测试，尝试找到最合适的原料投料比，合成分散性能最高的超分散剂。47368
研究结果表明，当己内酯的投料量越高，聚乙二醇的分子量越高，得到产物的磷含量、磷酸单酯含量和端羧基含量在逐步减少，而磷酸含量并不是很稳定。而产物分散性能中细度和粘度基本成正比，细度增加则粘度也将上升。随着己内酯的含量的上升，浆料细度和粘度都大致成降低趋势，当聚乙二醇的分子量的增大，浆料细度将增大，这点mPEG550表现的比较明显。而mPEG350合成产物的浆料粘度和mPEG250比较相近，mPEG350合成产物的浆料粘度却显然较小。
Abstract Dispersing agent in the coating is used to reduce the viscosity of the coating and fineness, prevent coating harmful flocculation, precipitation and help prevent coating to improve the performance of coating dispersion effect. Traditional dispersants are easy to produce harmful bridging flocculation, and the limitations in non-aqueous dispersions, super dispersant can relatively easy in orientational particles on the surface, have very good dispersing effect, and super dispersant particles can form a multiple anchor points, will firmly adsorbed particles, it is not easy to produce desorption phenomenon.
This study with caprolactone, polyethylene glycol, phosphorus pentoxide and water as raw material, by changing the weight ratio, change caprolactone inventory and the molecular weight of polyethylene glycol (peg) to get the product of different structure. Through the product to determine the content of phosphorus and phosphate content analysis of product structure, the final product for dispersing performance test, try to find the most appropriate dosing raio of raw materials, synthetic dispersion performance of the highest super dispersant. The research results show that when the inventory of caprolactone is higher, the higher the molecular weight of polyethylene glycol (peg), product by the content of phosphorus, phosphoric acid monoester content and end carboxyl content in gradually reduce, and phosphoric acid content is not very stable. Scattered and product performance fineness and basic is proportional to the viscosity, degree of fineness increased viscosity will rise.
With caprolactone levels rise, slurry fineness and viscosity are to reduce the trend, roughly when the increase of the molecular weight of polyethylene glycol, slurry fineness will increase, this obvious mPEG550 performance. And mPEG350 synthetic product slurry viscosity and close mPEG250, mPEG350 composite slurry viscosity is smaller.
毕业论文关键词：超分散剂; 分子结构; 涂料; 己内酯; 聚乙二醇; 分散性能;
Keyword: The super dispersant; The molecular structure; painting; caprolactone;polyethylene glycol; dispersing performance;
目 录
目录I
摘要III
Abstract·V
1 引言·3
1.1超分散剂的定义和特性·4
1.2超分散剂的分子结构·4
1.3超分散剂在颗粒表面的吸附情况·4
1.4超分散剂的分类·5
1.5超分散剂的应用和发展前景·5
1.6涂料中的超分散剂·6
2 实验部分6
2.1实验试剂·6
2.2实验仪器·7
2.3实验方法·7
2.3.１分散剂的合成·7
2.3.2磷酸酯组成分析8
2.3.３磷含量的测定8
2.3.4核磁共振9
2.3.5涂料分散性能的测试（浆料细度测定）·9