摘要
以烯丙氧基聚乙氧基硫酸铵(APES)、马来酸酐(MA)、马来酸酐-丙烯酸共聚物(MA-AA)为原料,水为溶剂,使APES和MA、APES和MA-AA在水溶液中同时进行自由基共聚和接枝共聚,合成了APES接枝MA-AA的APES-MA聚醚型无磷的共聚物阻垢剂,用红外光谱和核磁共振氢谱对共聚物结构进行了表征。探讨了单体配比、温度和用量、黏均分子量对共聚物阻垢性能的影响,结果表明该阻垢剂既具有优异的阻Ca3(PO4)2性能,又有良好的阻CaCO3特性。温度80℃时,阻垢剂用量5 mg.L-1,阻Ca3(PO4)2率为98.89%;温度50℃时,用量5 mg.L-1,阻Ca3(PO4)2率为100.0%,用量25 mg.L-1,阻CaCO3率为97.97%。且CaCO3形成易被清除的松垢,该阻垢剂适用于工业循环冷却水系统。
Water was used as solvent and allyloxy polyethoxy sulfate （APES）, maleic anhydride （MA）, polymer of maleie anhydride and acrylic acid （MA-AA） were used as monomers to synthesize phosphorfree scale inhibitor and the copolymer＇s structure was characterized by means of FT-IR and ^1H NMR. Free radical polymerization of APES with MA and graft polymerization of APES with MA-AA happened simultaneously. APES-eo-MA was the main product while （ MA-AA ） -g-APES was the minor product. The influence of monomer ratio, dosage and temperature, viscosity-average molecular weight on the copolymer＇s scale inhibition performance was discussed, and the results showed that the copolymer not only had excellent phosphate inhibition capability but also had good carbonate inhibition capability. Its phosphor inhibition reached 98. 89% when dosage was 5 mg · L^-1 and temperature was 80℃, and reached 100% when dosage was 5 mg ·L^-1 and temperature was 50℃. Carbonate inhibition reached 97.97% when dosage was 25 mg· L^-1 and temperature was 50℃. The calcium carbonate was easy to get rid of, because it became fluffy. The copolymer is suitable for general industrial cooling water system.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第1期249-255,共7页
CIESC Journal
基金
江苏省六大人才高峰(06-A-033)
教育部新世纪优秀人才支持计划(NCET-04-0482)
国家自然科学基金项目(50377005)~~
关键词
烯丙氧基聚乙氧基硫酸铵
自由基共聚
接枝共聚
allyloxy polyethoxy sulfate
free radical polymerization
graft polymerization
