Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement
Styrene–butadiene rubber (SBR) has been extensively applied to enhance the toughness of hardened cement. The instability of existing liquid latex leads to difficulties in storage and transportation, and even performance regression. Thus, the well-dispersed carboxylated butylbenzene (SISBR) latex pow...
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| Online Access: | https://www.mdpi.com/1996-1944/15/23/8345 |
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| author | Yubing Xing Miaomiao Hu Chengzhang Cao Jiayu Yu Jiaqi Zhao Hongbing Zheng Jintang Guo |
| author_facet | Yubing Xing Miaomiao Hu Chengzhang Cao Jiayu Yu Jiaqi Zhao Hongbing Zheng Jintang Guo |
| author_sort | Yubing Xing |
| collection | DOAJ |
| description | Styrene–butadiene rubber (SBR) has been extensively applied to enhance the toughness of hardened cement. The instability of existing liquid latex leads to difficulties in storage and transportation, and even performance regression. Thus, the well-dispersed carboxylated butylbenzene (SISBR) latex powders were fabricated through the seed emulsion polymerization of liquid polybutadiene (LPB), styrene (St), itaconic acid (IA), and sodium p-styrenesulfonate (SSS) to overcome the difficulties. The dispersion performance of latex powders with various IA amounts was quantitatively evaluated using particle size distribution, zeta potential, and ultraviolet–visible spectrophotometry. Results showed that the carboxylic ionic (COO-) from IA enhanced the dispersing abilities of SISBR latex powders, which ensured the uniform distribution in water. Based on this, the influence of latex powder on cement was assessed mainly by fluidity, isothermal heat flow calorimetry, X-ray diffraction (XRD), and triaxial mechanical testing. Results showed the fluidity and dispersion performance of cement were improved with more IA in latex, while the hydration of cement was retarded due to excessive adsorption of carboxyl (-COOH) groups in IA. Triaxial mechanical testing showed that cement with SISBR-3 (latex containing 3% IA) exhibited the minimal elastic modulus of 3.16 GPa, which was lower than that of plain cement (8.34 GPa). |
| first_indexed | 2024-03-09T17:43:02Z |
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| id | doaj.art-dee7dad5a3ae4c0d9619ce95bbb15427 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T17:43:02Z |
| publishDate | 2022-11-01 |
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| spelling | doaj.art-dee7dad5a3ae4c0d9619ce95bbb154272023-11-24T11:26:41ZengMDPI AGMaterials1996-19442022-11-011523834510.3390/ma15238345Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well CementYubing Xing0Miaomiao Hu1Chengzhang Cao2Jiayu Yu3Jiaqi Zhao4Hongbing Zheng5Jintang Guo6Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, ChinaDepartment of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, ChinaDrilling Technology Research Institute, Sinopec Shengli Oilfield Service Corporation, Dongying 257000, ChinaZhejiang Shaoxing Institute of Tianjin University, Shaoxing 312300, ChinaDepartment of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, ChinaShandong Chambroad Sinopoly New Materials Co., Ltd., Binzhou 256600, ChinaDepartment of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, ChinaStyrene–butadiene rubber (SBR) has been extensively applied to enhance the toughness of hardened cement. The instability of existing liquid latex leads to difficulties in storage and transportation, and even performance regression. Thus, the well-dispersed carboxylated butylbenzene (SISBR) latex powders were fabricated through the seed emulsion polymerization of liquid polybutadiene (LPB), styrene (St), itaconic acid (IA), and sodium p-styrenesulfonate (SSS) to overcome the difficulties. The dispersion performance of latex powders with various IA amounts was quantitatively evaluated using particle size distribution, zeta potential, and ultraviolet–visible spectrophotometry. Results showed that the carboxylic ionic (COO-) from IA enhanced the dispersing abilities of SISBR latex powders, which ensured the uniform distribution in water. Based on this, the influence of latex powder on cement was assessed mainly by fluidity, isothermal heat flow calorimetry, X-ray diffraction (XRD), and triaxial mechanical testing. Results showed the fluidity and dispersion performance of cement were improved with more IA in latex, while the hydration of cement was retarded due to excessive adsorption of carboxyl (-COOH) groups in IA. Triaxial mechanical testing showed that cement with SISBR-3 (latex containing 3% IA) exhibited the minimal elastic modulus of 3.16 GPa, which was lower than that of plain cement (8.34 GPa).https://www.mdpi.com/1996-1944/15/23/8345SBR latex powderdispersion statecement hydrationretardationtoughness |
| spellingShingle | Yubing Xing Miaomiao Hu Chengzhang Cao Jiayu Yu Jiaqi Zhao Hongbing Zheng Jintang Guo Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement Materials SBR latex powder dispersion state cement hydration retardation toughness |
| title | Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement |
| title_full | Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement |
| title_fullStr | Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement |
| title_full_unstemmed | Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement |
| title_short | Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement |
| title_sort | dispersion mechanism of styrene butadiene rubber powder modified by itaconic acid and its toughening effect on oil well cement |
| topic | SBR latex powder dispersion state cement hydration retardation toughness |
| url | https://www.mdpi.com/1996-1944/15/23/8345 |
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