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题名	松香衍生物分散剂的合成及应用
作者	胡耀刚
学位类别	硕士
答辩日期	2007-06-06
授予单位	中国科学院过程工程研究所
授予地点	过程工程研究所
导师	任天瑞
关键词	松香 分散剂 合成 农药
其他题名	Synthesis and Application of a Rosin Derivate Dispersant
学位专业	应用化学
中文摘要	松香是一种丰富、廉价的天然资源。利用松香这种可再生的资源来部分代替化石资源已成为日益重要的研究课题。水分散粒剂(WG)是20世纪80年代正式投产的新农药剂型，分散剂是WG中非常重要的助剂，是影响WG性能的重要因素。目前，我国的分散剂品种单一，产量低。利用松香特有的粘结性能，经过改性研究可以合成出粘结性能好、耐冲刷的新型分散剂，基于此点做了一些探索性的工作。 1. 合成了苯乙烯磺酸钠-丙烯酸-甲基丙烯酸羟乙酯共聚物分散剂。该分散剂采用苯乙烯磺酸钠、丙烯酸和甲基丙烯酸羟乙酯为原料，以过硫酸铵和亚硫酸氢钠为引发剂，通过水溶液共聚的方法制得。通过正交实验优化反应条件，研究了单体物质的量之比、引发剂浓度、反应温度、反应时间这四个因素对产品分散性能的影响。得到最佳反应条件为：得到最佳反应条件为：苯乙烯磺酸钠、丙烯酸、甲基丙烯酸羟乙酯的物质的量之比为1.0﹕3.0﹕0.8，过硫酸铵的用量为单体总质量的12%，反应为温度为80℃，反应时间为2小时。在此条件下得到的共聚物分散剂分散硫酸钡的悬浮率为83.86%。研究了此类分散剂在六种农药水分散粒剂中的应用，测得这六种农药水分散粒剂的悬浮率均在75%以上。 2. 合成了一种新型的松香衍生物分散剂（已通过专利查新）。这种分散剂以松香衍生物、苯乙烯磺酸钠和丙烯酸为原料，以过硫酸铵和亚硫酸氢钠为引发剂，以N, N-二甲基甲酰胺和水为溶剂聚合而成。通过正交实验优化反应条件，研究了单体物质的量之比、引发剂浓度、反应温度、反应时间这四个因素对产品分散性能的影响。得到最佳反应条件为：苯乙烯磺酸钠、丙烯酸、甲基丙烯酸羟乙酯的物质的量之比为1.0﹕3.5﹕0.2，过硫酸铵的用量为单体总质量的8%，反应为温度为80℃，反应时间为2小时。在此条件下得到的共聚物分散剂分散硫酸钡的悬浮率为91.26%。研究了此类分散剂在六种农药水分散粒剂中的应用，测得这六种农药水分散粒剂的悬浮率均在85%以上。 3. 通过两种分散剂分散硫酸钡和制成的农药水分散粒剂的性能比较，发现松香衍生物分散剂的分散性能更好，而且制成的农药水分散粒剂的最大持留量更大，说明松香衍生物分散剂能够提高农药抗雨水冲刷的能力。
英文摘要	Rosin is a rich and cheap natural renewable resource. How to use this natural renewable resource to replace the petrochemical resources has become an increasingly important part of the research topics. Water dispersible granule (WG), a new type of pesticide dosage form, was put into formal production in the 1980s of the 20th century. It was considered as one of the most promising dosage form. Dispersant, a very important component of the WG, is the most important factor affecting the performance of the WG. Rosin has the special cohesive action. After modification, a new kind of dispersant which has good cohesive action and abrasion resistance can be synthesized. It can be described from the following aspects. 1. A series copolymer dispersant based on monomers of sodium styrene sulfonate (SSS), acrylic acid (AA), and 2-hydroxyethyl methacrylate (HEMA) were prepared by solution copolymerization using ammonium persulfate (APS) as initiator. The influences of factors on the dispersing properties of this copolymer dispersant were studied, such as molar ratio of the monomers, initiator concentration, reaction temperature and reaction time. The best reaction condition was found through orthogonal experiment. When the molar ratio of SSS(mol)﹕AA(mol)﹕HEMA(mol) is 1.0﹕3.0﹕0.8 , the mass fraction of initiator in total monomers is 12% by weight, the reaction time is 2 hours and the reaction temperature is 80℃, this copolymer dispersant has the best performance in dispersing barium sulfate. This copolymer dispersant was used in six different pesticides of water dispersible granule (WG) and suspension percentages of the water dispersible granule are more than 75%. 2. A new kind of rosin derivate dispersant was synthesized with sodium styrene sulfonate (SSS), acrylic acid (AA) and a rosin derivate (MPAHEMA) as monomers. The influences of factors on the dispersing properties of this copolymer dispersant were studied, such as molar ratio of the monomers, initiator concentration, reaction temperature and reaction time. The best reaction condition was found through orthogonal experiment. When the molar ratio of SSS(mol)﹕AA(mol)﹕MPAHEMA(mol) is 1.0﹕3.5﹕0.2 , the mass fraction of initiator in total monomers is 8% by weight, the reaction time is 2 hours and the reaction temperature is 80℃, this copolymer dispersant has the best performance in dispersing barium sulfate. This copolymer dispersant was used in six different pesticides of water dispersible granule (WG) and suspension percentages of the water dispersible granule are more than 85%. 3. Through the comparison of the two kinds of dispersant, we found that the rosin derivate dispersant has better dispersing performance and maximum retention . It is proved that the rosin derivate dispersant can enhance the abrasion resistance of the pesticide.
语种	中文
公开日期	2013-09-13
页码	77
内容类型	学位论文
源URL	[http://ir.ipe.ac.cn/handle/122111/1135]
专题	过程工程研究所_研究所（批量导入）
推荐引用方式 GB/T 7714	胡耀刚. 松香衍生物分散剂的合成及应用[D]. 过程工程研究所. 中国科学院过程工程研究所. 2007.

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