Preparation of (AA-AM-C18DMAAC-St) Quaternary Copolymerization Temperature Sensing Gel Microspheres by Antiphase Micro Emulsion Polymerization
ZHANG Dingjun1, HAN Xiao1,2, ZHU Jinlong1,2, YANG Shiyuan2, ZHAO Wenjin1
1 School of Material Science and Engineering, State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China 2 Lanzhou Petrochemical Research Center, PetroChina, Lanzhou 730060, China
Abstract: HWSP, as a new quaternary copolymer temperature sensing gel microsphere, was synthesized through antiphase micro emulsion polymerization by using acrylamide (AM), acrylic acid (AA), octadecyl dimethylallyl ammonium chloride (C18DMAAC) and styrene (St) as material. The morphology and structure of the HWSP were characterized by scanning electron microscopy (SEM) and fourier transform infrared spectrometer (FTIR), and the water absorption and temporary plugging properties of the HWSP were studied under different preparation conditions. Results show that the requirement, adjusting but not blocking, blocking but not dying, of temperature sensitive temporary plugging agent HWSP could be realized under the simulated formation environment conditions; what's more, the HWSP shows the best water absorption performance, as well as certain salt tolerance and thermal stability under the condition of m(C18DMAAC)∶m(AA+AM)∶m(St) of 1∶5∶0.55.
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2022, Vol. 36 
