核壳型丁苯胶乳对水泥基复合材料力学性能的影响及其作用机制
|
摘要
针对地层、水泥环、套管三者之间形变不协调而导致的三者层间封隔失效等问题,采用种子乳液聚合的方法,将功能单体2-丙烯酰胺基-2-甲基丙磺酸与苯乙烯接枝到低分子量液体聚丁二烯上,合成了一种稳定性良好的丁苯胶乳增韧剂TEL-100L胶乳。TEL-100L胶乳的结构及性能评价表明:TEL-100L胶乳具有良好的热稳定性和明显的核壳结构。水泥石的力学性能评价表明:TEL-100L胶乳可明显降低水泥石的脆度系数和弹性模量,提高水泥石的韧性及力学形变能力。对TEL-100L胶乳增韧机制的研究表明:TEL-100L胶乳不仅可以通过静电吸引作用吸附到水泥颗粒表面,而且可以通过Ca2+的桥接作用与水泥水化体系交错连接,形成致密的三维网状结构,从而提高水泥基复合材料的韧性和力学形变能力。
The deformation of cement sheath is often inconsistent with that of casing and formation,which leads to the failures of zonal isolation.In order to solve the problems,a kind of styrene butadiene rubber latex possessing good stability was synthesized by grafting 2-acrylamido-2-methyl-propane sulfonic acid and styrene to the liquid polybutadiene with low molecular weight via seed-emulsion polymerization.The structure and properties characteristics indicate that TEL-100 Llatex possesses good thermal stability and perfect core-shell structure.For oil well cement stone,the evaluations of mechanical property show that TEL-100 Llatex can significantly reduce the brittleness coefficient and elasticity modulus of cement stone,and improve its toughness and deformation ability.The exploration of toughening mechanism finds that TEL-100 Llatex can not only be adsorbed onto the cement grains surface by electrostatic attraction,but also can be cross connected with cement hydration system through the complexation with Ca2+,which leads to the formation of compact three-dimensional net structure and the improvement of toughness and deformation ability.
The deformation of cement sheath is often inconsistent with that of casing and formation,which leads to the failures of zonal isolation.In order to solve the problems,a kind of styrene butadiene rubber latex possessing good stability was synthesized by grafting 2-acrylamido-2-methyl-propane sulfonic acid and styrene to the liquid polybutadiene with low molecular weight via seed-emulsion polymerization.The structure and properties characteristics indicate that TEL-100 Llatex possesses good thermal stability and perfect core-shell structure.For oil well cement stone,the evaluations of mechanical property show that TEL-100 Llatex can significantly reduce the brittleness coefficient and elasticity modulus of cement stone,and improve its toughness and deformation ability.The exploration of toughening mechanism finds that TEL-100 Llatex can not only be adsorbed onto the cement grains surface by electrostatic attraction,but also can be cross connected with cement hydration system through the complexation with Ca2+,which leads to the formation of compact three-dimensional net structure and the improvement of toughness and deformation ability.
引文
[1]刘仍光,周仕明,陶谦,等.掺橡胶乳液和弹性粒子柔性油井水泥石的微结构[J].硅酸盐学报,2015,43(10):1475-1482.LIU Rengguang,ZHOU Shiming,TAO Qian,et al.Microstructure of flexible oil-well cement stone mixed with latex and elastic particle[J].Journal of the Chinese Ceramic Society,2015,43(10):1475-1482(in Chinese).
[2]郭锦棠,张振光,于永金,等.聚丁二烯基胶乳水泥增韧剂的制备及性能评价[J].天津大学学报(自然科学与工程技术版),2017,50(3):262-267.GUO Jintang,ZHANG Zhenguang,YU Yongjin,et al.Preparation and properties evaluation of polybutadiene-based latex cement toughener[J].Journal of Tianjin University(Science and Technology),2017,50(3):262-267(in Chinese).
[3] ZHANG Y,KONG X.Influences of superplasticizer,polymer latexes and asphalt emulsions on the pore structure and impermeability of hardened cementitious materials[J].Construction&Building Materials,2014,53(4):392-402.
[4]齐奔,付家文,孙勤亮,等.一种抗盐抗高温非离子型防窜丁苯胶乳[J].钻井液与完井液,2016,33(2):79-83.QI Ben,FU Jiawen,SUN Qinliang,et al.High temperature salt resistant nonionic anti-channeling styrene butadiene latex[J].Drilling Fluid&Completion Fluid,2016,33(2):79-83(in Chinese).
[5]何英,徐依吉,熊生春,等.丁苯胶乳的研制及其水泥浆性能评价[J].中国石油大学学报:自然科学版,2008,32(5):121-125.HE Ying,XU Yiji,XIONG Shengchun,et al.Preparation of styrene-butadiene latex and evaluation of cement slurry performance[J].Journal of China University of Petroleum:Edition of Natural Science,2008,32(5):121-125(in Chinese).
[6]潘文杰,郭锦棠,樊金杰,等.接枝改性聚丁二烯胶乳的制备及其在水泥基复合材料中的应用[J].复合材料学报,2018,35(4):973-979.PAN Wenjie,GUO Jintang,FAN Jinjie,et al.Preparation of graft-modified polybutadiene latex and its applied in cement based composites[J]. Acta Materiae Compositae Sinica,2018,35(4):973-979(in Chinese).
[7] WANG M,WANG R,YAO H,et al.Research on the mechanism of polymer latex modified cement[J].Construction&Building Materials,2016,111:710-718.
[8]严增涛,赵小龙,胡迈声.丁苯胶乳在油气田固井中的应用展望及粒子设计[J].石化技术与应用,2001,19(5):325-327.YAN Zengtao,ZHAO Xiaolong,HU Maisheng.Application of styrene-butadiene latex for cementing in oil-gas field and its particles design[J].Petrochemical Technology&Application,2001,19(5):325-327(in Chinese).
[9]王中华.近期国内AMPS聚合物研究进展[J].精细与专用化学品,2011,19(8):42-47.WANG Zhonghua.The recent advances in study of AMPS polymer in China[J].Fine and Specialty Chemicals,2011,19(8):42-47(in Chinese).
[10]邱海霞,王志鹏,郭锦棠,等.油井水泥增韧剂的无皂乳液合成及性能评价[J].天津大学学报:自然科学与工程技术版,2015,48(9):779-783.QIU Haixia,WANG Zhipeng,GUO Jintang,et al.Soapfree emulsion synthesis and performance research of oil well cement toughener[J].Journal of Tianjin University:Science and Technology,2015,48(9):779-783(in Chinese).
[11] BARLUENGA G,HERNANDEZ-OLIVARES F.SBR latex modified mortar rheology and mechanical behavior[J].Cement&Concrete Research,2004,34(3):527-535.
[12] WANG R,WANG P M,LI X G.Physical and mechanical properties of styrene-butadiene rubber emulsion modified cement mortars[J].Cement&Concrete Research,2005,35(5):900-906.
[13]齐奉忠,刘硕琼,沈吉云,等.油井水泥石性能试验方法:SY/T 6466—2016[S].北京:中石油集团钻井工程技术研究院,2016.QI Fengzhong,LIU Shuoqiong,SHEN Jiyun,et al.Testing of set oil well cement:SY/T 6466—2016[S].Beijing:Drilling Research Institute of CNPC,2016.
[14]李早阳,郭小阳,韩林,等.胶乳对水泥石三轴力学形变能力的作用[J].石油学报,2007,28(7):126-129.LI Zaoyuang,GUO Xiaoyang,HAN Lin,et al.Improvement of latex on mechanical deformation capability of cement sheath under triaxiai loading condition[J].Acta Petrolei Sinica,2007,28(7):126-129(in Chinese).
[15] YANG Z,SHI X,CREIGHTON A T,et al.Effect of styrene-butadiene rubber latex on the chloride permeability and microstructure of Portland cement mortar[J].Construction&Building Materials,2009,23(6):2283-2290.
[16] BAUEREGGER S,PERELLO M,PLANK J.Impact of carboxylated styrene-butadiene copolymer on the hydration kinetics of OPC and OPC/CAC/AH:The effect of Ca2+,sequestration from pore solution[J].Cement&Concrete Research,2015,73:184-189.
[17] EREN F,GODEK E,KESKINATES M,et al.Effects of latex modification on fresh state consistency,short term strength and long term transport properties of cement mortars[J].Construction&Building Materials,2017,133:226-233.
[18] BAUEREGGER S,PERELLO M,PLANK J.Influence of carboxylated styrene-butadiene latex copolymer on Portland cement hydration[J]. Cement&Concrete Composites,2015,63:42-50.
[19] LU Z,KONG X,ZHANG Q,et al.Influences of styreneacrylate latexes on cement hydration in oil well cement system at different temperatures[J].Colloids&Surfaces A:Physicochemical&Engineering Aspects,2016,507:46-57.
[20] RUI F P P,VALENTE A J M,BURROWS H D.The interaction of long chain sodium carboxylates and sodium dodecylsulfate with lead(II)ions in aqueous solutions[J].Journal of Colloid&Interface Science,2014,414(414C):66-72.
[21] ZHANG Y R,KONG X M,LU Z C,et al.Influence of triethanolamine on the hydration product of portlandite in cement paste and the mechanism[J].Cement&Concrete Research,2016,87:64-76.
[22] KONG X,EMMERLING S,PAKUSCH J,et al.Retardation effect of styrene-acrylate copolymer latexes on cement hydration[J].Cement&Concrete Research,2015,75:23-41.
[23]施韬,杨泽平,郑立炜.碳纳米管改性水泥基复合材料早龄期水化反应的傅里叶红外光谱[J].复合材料学报,2017,34(3):653-660.SHI Tao,YANG Zeping,DENG Liwei.FTIR spectra for early age hydration of cement-based composites incorporated with CNTs[J].Acta Materiae Compositae Sinica,2017,34(3):653-660(in Chinese).
[2]郭锦棠,张振光,于永金,等.聚丁二烯基胶乳水泥增韧剂的制备及性能评价[J].天津大学学报(自然科学与工程技术版),2017,50(3):262-267.GUO Jintang,ZHANG Zhenguang,YU Yongjin,et al.Preparation and properties evaluation of polybutadiene-based latex cement toughener[J].Journal of Tianjin University(Science and Technology),2017,50(3):262-267(in Chinese).
[3] ZHANG Y,KONG X.Influences of superplasticizer,polymer latexes and asphalt emulsions on the pore structure and impermeability of hardened cementitious materials[J].Construction&Building Materials,2014,53(4):392-402.
[4]齐奔,付家文,孙勤亮,等.一种抗盐抗高温非离子型防窜丁苯胶乳[J].钻井液与完井液,2016,33(2):79-83.QI Ben,FU Jiawen,SUN Qinliang,et al.High temperature salt resistant nonionic anti-channeling styrene butadiene latex[J].Drilling Fluid&Completion Fluid,2016,33(2):79-83(in Chinese).
[5]何英,徐依吉,熊生春,等.丁苯胶乳的研制及其水泥浆性能评价[J].中国石油大学学报:自然科学版,2008,32(5):121-125.HE Ying,XU Yiji,XIONG Shengchun,et al.Preparation of styrene-butadiene latex and evaluation of cement slurry performance[J].Journal of China University of Petroleum:Edition of Natural Science,2008,32(5):121-125(in Chinese).
[6]潘文杰,郭锦棠,樊金杰,等.接枝改性聚丁二烯胶乳的制备及其在水泥基复合材料中的应用[J].复合材料学报,2018,35(4):973-979.PAN Wenjie,GUO Jintang,FAN Jinjie,et al.Preparation of graft-modified polybutadiene latex and its applied in cement based composites[J]. Acta Materiae Compositae Sinica,2018,35(4):973-979(in Chinese).
[7] WANG M,WANG R,YAO H,et al.Research on the mechanism of polymer latex modified cement[J].Construction&Building Materials,2016,111:710-718.
[8]严增涛,赵小龙,胡迈声.丁苯胶乳在油气田固井中的应用展望及粒子设计[J].石化技术与应用,2001,19(5):325-327.YAN Zengtao,ZHAO Xiaolong,HU Maisheng.Application of styrene-butadiene latex for cementing in oil-gas field and its particles design[J].Petrochemical Technology&Application,2001,19(5):325-327(in Chinese).
[9]王中华.近期国内AMPS聚合物研究进展[J].精细与专用化学品,2011,19(8):42-47.WANG Zhonghua.The recent advances in study of AMPS polymer in China[J].Fine and Specialty Chemicals,2011,19(8):42-47(in Chinese).
[10]邱海霞,王志鹏,郭锦棠,等.油井水泥增韧剂的无皂乳液合成及性能评价[J].天津大学学报:自然科学与工程技术版,2015,48(9):779-783.QIU Haixia,WANG Zhipeng,GUO Jintang,et al.Soapfree emulsion synthesis and performance research of oil well cement toughener[J].Journal of Tianjin University:Science and Technology,2015,48(9):779-783(in Chinese).
[11] BARLUENGA G,HERNANDEZ-OLIVARES F.SBR latex modified mortar rheology and mechanical behavior[J].Cement&Concrete Research,2004,34(3):527-535.
[12] WANG R,WANG P M,LI X G.Physical and mechanical properties of styrene-butadiene rubber emulsion modified cement mortars[J].Cement&Concrete Research,2005,35(5):900-906.
[13]齐奉忠,刘硕琼,沈吉云,等.油井水泥石性能试验方法:SY/T 6466—2016[S].北京:中石油集团钻井工程技术研究院,2016.QI Fengzhong,LIU Shuoqiong,SHEN Jiyun,et al.Testing of set oil well cement:SY/T 6466—2016[S].Beijing:Drilling Research Institute of CNPC,2016.
[14]李早阳,郭小阳,韩林,等.胶乳对水泥石三轴力学形变能力的作用[J].石油学报,2007,28(7):126-129.LI Zaoyuang,GUO Xiaoyang,HAN Lin,et al.Improvement of latex on mechanical deformation capability of cement sheath under triaxiai loading condition[J].Acta Petrolei Sinica,2007,28(7):126-129(in Chinese).
[15] YANG Z,SHI X,CREIGHTON A T,et al.Effect of styrene-butadiene rubber latex on the chloride permeability and microstructure of Portland cement mortar[J].Construction&Building Materials,2009,23(6):2283-2290.
[16] BAUEREGGER S,PERELLO M,PLANK J.Impact of carboxylated styrene-butadiene copolymer on the hydration kinetics of OPC and OPC/CAC/AH:The effect of Ca2+,sequestration from pore solution[J].Cement&Concrete Research,2015,73:184-189.
[17] EREN F,GODEK E,KESKINATES M,et al.Effects of latex modification on fresh state consistency,short term strength and long term transport properties of cement mortars[J].Construction&Building Materials,2017,133:226-233.
[18] BAUEREGGER S,PERELLO M,PLANK J.Influence of carboxylated styrene-butadiene latex copolymer on Portland cement hydration[J]. Cement&Concrete Composites,2015,63:42-50.
[19] LU Z,KONG X,ZHANG Q,et al.Influences of styreneacrylate latexes on cement hydration in oil well cement system at different temperatures[J].Colloids&Surfaces A:Physicochemical&Engineering Aspects,2016,507:46-57.
[20] RUI F P P,VALENTE A J M,BURROWS H D.The interaction of long chain sodium carboxylates and sodium dodecylsulfate with lead(II)ions in aqueous solutions[J].Journal of Colloid&Interface Science,2014,414(414C):66-72.
[21] ZHANG Y R,KONG X M,LU Z C,et al.Influence of triethanolamine on the hydration product of portlandite in cement paste and the mechanism[J].Cement&Concrete Research,2016,87:64-76.
[22] KONG X,EMMERLING S,PAKUSCH J,et al.Retardation effect of styrene-acrylate copolymer latexes on cement hydration[J].Cement&Concrete Research,2015,75:23-41.
[23]施韬,杨泽平,郑立炜.碳纳米管改性水泥基复合材料早龄期水化反应的傅里叶红外光谱[J].复合材料学报,2017,34(3):653-660.SHI Tao,YANG Zeping,DENG Liwei.FTIR spectra for early age hydration of cement-based composites incorporated with CNTs[J].Acta Materiae Compositae Sinica,2017,34(3):653-660(in Chinese).