Synthesis and Solution Properties of Polyacrylamide Containing Sulfobetaine Groups

用丙烯酰胺(AM)、n,n-二甲基丙烯酰胺(dMAM)、[3-(甲基乙烯酰胺)丙基]二甲基-(3-磺酸)铵(dMMPPS)和[2-(甲基丙烯酰基氧基)乙基]二甲基-(3-磺酸丙基)氢氧化铵(dMAPS)单体通过氧化还原引发剂引发自由基聚合合成AM-dMMPPS、AM-dMAM-dMMPPS、AM-dMAPS和AM-dMAM-dMAPS 4种两性离子共聚物,并对两性离子聚合物进行表征和性能评价.研究结果表明,实验合成的4种共聚物AM-dMMPPS、AM-dMAMdMMPPS、AM-dMAPS和AM-dMAM-dMAPS都有增黏、抗盐、耐温的效果.在相同的反应条件下,在合成的共聚物中,AM-dMMPPS增黏、抗盐、耐温的效果最佳,其比浓黏度达36.8,dl/g.Four kinds of zwitterionic copolymers(AM-DMMPPS,AM-DMAM-DMMPPS,AM-DMAPS and AMDMAM-DMAPS) were synthesized by free radical copolymerization of acrylamide(AM), N, Ndimethylacrylamide(DMAM),[3-(methacryloylamino)propyl]dimethyl(3-sulfopropyl) ammonium hydroxide inner salt(DMMPPS)and [2-(Methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide(DMAPS).The copolymers were characterized and their solution properties were evaluated.The results show that the existence of the copolymers enhances the viscosity of the aqueous solution and the copolymers exhibit favorable salt resistant and thermal stable properties.At the same condition of copolymerization,in all synthesized copolymers,the AMDMMPPS copolymer has the most excellent properties of aqueous thickening and heat and salt resistant effect,and the highest reduced viscosity of the copolymer solution is 36.8,dL/g.国家自然科学基金资助项目(20876108

The utility model relates to a wind power propelling type spartina alterniflora mowing boat

本实用新型涉及互花米草刈割船，具体地说是一种风力推进式互花米草刈割船，包括船体及安装于船体上的水下割草刀，水下割草刀具有电源开关、轴、支架及分别安装于支架上的竖刀和横刀，支架、竖刀及横刀可相对于轴升降，竖刀在电源开关开启后沿竖直方向振动割草，横刀在电源开关开启后沿横向振动割草；还包括风力推进器、动力源及方向杆，风力推进器整体转动安装于船体上，风力推进器上固接有动力源，动力源为风力推进器产生风力为船体提供行进动力，风力推进器上或动力源上安装有方向杆。本实用新型船体稳定，螺旋桨不会因为缠绕割下的米草而难以前进，适用于涨潮期间刈割互花米草，是互花米草治理或收割所需的专业设备