丙烯酸/烯丙基壬基酚聚醚硫酸铵无磷阻垢剂制备及性能  

Synthesis and performance of a non-phosphorus antiscalant of acrylic acid/ammonium allylnonylphenol polyether sulphate

作　　者：符嫦娥[1,2] 周钰明[1] 谢洪涛[1] 吴文导 孙伟 

机构地区：[1]东南大学化学化工学院,南京211189 [2]南京化工职业技术学院,南京210048 [3]江苏江海化工集团有限公司,常州213116

出　　处：《环境工程学报》2010年第12期2673-2678,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50873026);江苏省常州市产学研合作科技项目(CV20090002)

摘　　要：以过硫酸铵为引发剂,丙烯酸(AA)和烯丙基壬基酚聚醚硫酸铵(TS-10,10为乙烯基重复单元数)为单体合成了TS-10/AA聚合物阻垢剂。利用红外光谱对共聚物结构进行了表征。采用静态阻垢方法探讨了单体配比、阻垢剂用量以及溶液中Fe2+、Ca2+、PO43-、杀生剂和溶液pH值对共聚物阻磷酸钙垢性能的影响,结果表明单体TS-10与AA质量比为3∶1合成的TS-10/AA阻垢剂阻磷酸钙效果最佳。阻垢剂TS-10/AA在高Fe2+、高Ca2+、高pH值条件下具有优异的阻磷酸钙垢性能,与异噻唑啉酮杀生剂有很好的配伍性。阻垢剂TS-10/AA用量存在临界值效应,在8 mg/L时,阻磷酸钙垢为99.3%。扫描电镜表明,阻垢剂TS-10/AA改变磷酸钙的晶型和松散度。TS-10/AA的高效阻磷酸钙垢性能是源于其侧链上含有强亲水性的聚醚结构以及大量的—COO-离子且易与循环水系统中存在的钙离子发生作用。实验结果表明,TS-10/AA是一种性能优异的循环冷却水用阻垢剂。Ammonium allylnonylphenol polyether sulphate/acrylic acid（TS-10/AA）,a non-phosphorus antiscalant for calcium phosphate,was synthesized by using AA and TS-10（10 is the number of repeating unit of ethylene oxygen） as monomers and ammonium persulfate as initiator.The product was characterized by FT-IR.The performance on calcium phosphate inhibition was evaluated by the static scale-inhibiting method.The influence of monomer ratio, TS-10/AA dose and biocide on calcium phosphate inhibition was investigated.Calcium phosphate inhibition as a function of solution pH value,Ca2＋,Fe2＋,PO3-4 concentration was also investigated.The study indicated that TS-10/AA had superior ability to inhibit the precipitation of calcium phosphate when m（TS-10）∶m（AA） was 3∶1.TS-10/AA had still superior ability to inhibit calcium phosphate precipitation under the condition of high Ca2＋,Fe2＋ concentration and high solution pH value and it had excellent compatibility with the biocide of different thiazolidinone.There was threshold dosage and approximately 99.3% inhibition on calcium phosphate when the dosage was 8 mg/L.Scanning electron microscope showed a disordered calcium phosphate crystal in the presence of TS-10/AA.Inhibition mechanism was proposed that,ethylene oxygen segments increased solubility of TS-10/AA,the interactions between all kinds of calcium ions in systems and carboxyl groups on side chains were the fundamental impetus to restrain the formation of calcium phosphate scale.The study indicated TS-10/AA would be a superior non-phosphorus antiscalant in cooling water systems.

关 键 词：无磷阻垢剂 磷酸钙 烯丙基壬基酚聚醚硫酸铵 

分 类 号：TG174[金属学及工艺—金属表面处理]