聚丁二烯基胶乳水泥增韧剂的制备及性能评价

发布时间：2018-06-15 23:44

  本文选题：增韧剂 + 种子乳液接枝方法　； 参考：《天津大学学报(自然科学与工程技术版)》2017年03期

【摘要】：针对目前二元丁苯胶乳冻融、抗盐性差,苯丙胶乳分子链不稳定、耐热性能不好的问题,采用种子乳液接枝的方法引入2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、N,N-二甲基丙烯酰胺(DMAM)作为功能单体与苯乙烯在聚丁二烯胶乳上接枝共聚合成了四元油井水泥增韧剂FTL,并对其性能进行评价.红外测试表明合成的FTL为目标产物.冻融及抗盐实验表明,FTL具有优异的冻融及抗盐稳定性.热失重实验说明FTL具有好的热稳定性,热分解温度达到410,℃.抗压抗折强度及三轴实验表明,FTL可以显著改善油井水泥石的韧性.扫描电子显微镜(SEM)显示,胶乳颗粒与水泥微缝隙交结面之间形成一桥接膜,而纯水泥则没有这种结构.胶乳水泥的高温配伍性实验说明,FTL与降失水剂、缓凝剂具有优异的配伍性.含FTL的油井水泥综合性能实验考察发现,其还具有控失水、流动度好及低游离液含量.
[Abstract]:In view of the problems of freezing and thawing of binary butyl benzene latex, poor salt resistance, unstable molecular chain of styrene-acrylic latex and poor heat resistance, A quaternary oil well cement toughening agent FTL was prepared by seed emulsion grafting copolymerization of 2-acrylamide (2-acrylamide) -2-methylpropanesulfonic acid (AMPS) and N- (N-dimethyl-acrylamide) (DMAM) as functional monomer and styrene onto polybutadiene latex. Its performance was evaluated. The FTL is the target product. Freeze-thaw and salt tolerance experiments show that FTL has excellent freeze-thaw and salt resistance stability. The thermogravimetric test shows that FTL has good thermal stability, and the thermal decomposition temperature reaches 410 鈩，

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