Synthesis and Performance Evaluation of Salt-Resistant Fluid Loss Additive AMPS/DMAA/IA

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Abstract

Fluid loss additives (FLAs) have the feature of high viscosity, thus increasing the consistence of cement slurry. Moreover, some FLAs exhibit poor salt-tolerant ability. Aimed at above problems, a new fluid loss additive (FLA) AMPS/DMAA/IA was synthesized through free radical aqueous solution copolymerization with the monomers of 2-acrylamido-2-methyl-propane sulphonic acid (AMPS), N,N-dimethyl-acrylamide (DMAA) and itaconic acid. The structure of the copolymer was identified by FTIR analysis. The thermogravimetry analysis showed that the terpolymer was stable when temperature was below 320℃. The polymer exhibits excellent fluid loss control ability and can be available in saturated brine. The undesired phenomenon such as "abnormal gel" or "false set" was not observed in the thickening test. What's more, the dosage of the terpolymer exerts little effect on the compressive strength of cement stone at low temperature. The far delayed solidification was not presented. It is established that the terpolymer AMPS/DMAA/IA possesses good integrated performance in sea-water cement slurry system.

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	Articles by authors
	Yu Wenjuan
	Guo Jintang
	Guo Chun
	Wang Meiyu
	Fan Jinjie
	Tian Jing

Keywords： fluid loss additive； salt-resistance； sea water； cement slurry； compressive strength

Received 2016-03-23;

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Cite this article:

Yu Wenjuan, Guo Jintang, Guo Chun, Wang Meiyu, Fan Jinjie, Tian Jing.Synthesis and Performance Evaluation of Salt-Resistant Fluid Loss Additive AMPS/DMAA/IA[J] Chemcial Industry and Engineering, 2018,V35(1): 45-50

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