聚羧酸盐侧链长度对水煤浆分散性能的影响及其作用机理

doi:10.11949/j.issn.0438-1157.20141817

化工学报 ›› 2015, Vol. 66 ›› Issue (10): 4202-4210.DOI: 10.11949/j.issn.0438-1157.20141817

聚羧酸盐侧链长度对水煤浆分散性能的影响及其作用机理

朱军峰, 李元博, 张光华, 王睿

陕西科技大学化学与化工学院, 教育部轻化工助剂化学与技术重点实验室, 陕西西安 710021

收稿日期:2014-12-09 修回日期:2015-05-06 出版日期:2015-10-05 发布日期:2015-10-05
通讯作者: 张光华
基金资助:
国家自然科学基金项目(21176148,21303098);陕西省科技厅自然科学基金项目(2014JM2040);陕西省教育厅专项科研项目(14JK1095)。

Action mechanism and effect of side chain length of polycarboxylatedispersant on dispersion of coal-water slurries

ZHU Junfeng, LI Yuanbo, ZHANG Guanghua, WANG Rui

Key Laboratory of Additives of Chemistry &Technology for Chemical Industry, Ministry of Education;College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, Shaanxi, China

Received:2014-12-09 Revised:2015-05-06 Online:2015-10-05 Published:2015-10-05
Supported by:
supported by the National Natural Science Foundation of China (21176148, 21303098), the Natural Science Foundation of Shaanxi Province (2014JM2040) and the Scientific Subject Foundation of the Education Department of Shaanxi Provincial Government (14JK1095).

摘要/Abstract

摘要：

合成了一系列具有不同侧链长度的梳型聚羧酸盐(PC),研究了PC侧链长度对水煤浆的分散和流变性能的影响,使用X射线光电子能谱(XPS)分析了PC在煤水界面的吸附,并结合水煤浆Zeta电位及PC对煤颗粒的润湿性探讨了PC的分散作用机理,为设计制得高效的聚羧酸盐水煤浆分散剂提供依据。结果表明:长主链、短侧链和高阴离子基团含量的PC500(侧链聚合度)具有优良的分散性,所制水煤浆属假塑性流体。PC在煤表面呈单分子层吸附,其中PC500的吸附密度和吸附厚度均最大,分别为0.638 mg·m^-2和4.20 nm,其对煤粒润湿性也较好,所制水煤浆Zeta电位绝对值最高。侧链长度适中的PC500通过平衡吸附层厚度与Zeta电位发挥空间位阻和静电斥力作用分散水煤浆,其可有效地降低水煤浆Gibbs能,使煤粒间“团聚”减弱,浆体分散性提高。

关键词: 梳型聚羧酸盐, 侧链长度, 流变, 吸附, 分散, 水煤浆

Abstract:

Comb-like polycarboxylate dispersants (PC) with different side chain lengths ranging from 8—23 nm were synthesized using esterifiedmacromer of methoxypolyethyleneglycol (MPEG)-acrylic acid (AA), AA and styrene sulfonic sodium (SSS). The molecular structure of PC was analyzed by testing its anionic group content and relative molecular. Experiments were performed to study the influence of the length of PC side chain on dispersion and rheological properties of coal water slurry (CWS). The adsorption behaviors of PC on coal/water interface were analyzed by X-Ray photoelectron spectroscopy (XPS), which was combined with the Zeta potential and the wettability of PC on coal to investigate the action mechanism of PC dispersions in order to provide the basis for designing more efficient polycarboxylate dispersants. The results showed that the dispersibility of PC500 (n=11) was the best due to its structure of long main chain, short side chains and high anionic group content. The CWS using comb-like PC was represented as pseudoplastic fluid, which was best matched with Herschel-Bulkley model. The monolayer adsorption of PC500 on the coal surface possessed the highest adsorption density (0.638 mg·m^-2) as well as the maximum thickness (4.20 nm) with better wettability and the highest Zeta potential on coal. PC500 wearing the proper length of the side chain played the steric hindrance and electrostatic repulsion to disperse CWS by balancing adsorption thickness and Zeta potential. PC500 with the right length of the side chain can reduce Gibbs of CWS to weaken “reunion” among the coal particles while improving dispersibility of CWS.

Key words: comb-like polycarboxylatepolycarboxylate polycarboxylate, side chain length, rheology, adsorption, dispersion, coal-water slurry

中图分类号:

TQ536.9

朱军峰, 李元博, 张光华, 王睿. 聚羧酸盐侧链长度对水煤浆分散性能的影响及其作用机理[J]. 化工学报, 2015, 66(10): 4202-4210.

ZHU Junfeng, LI Yuanbo, ZHANG Guanghua, WANG Rui. Action mechanism and effect of side chain length of polycarboxylatedispersant on dispersion of coal-water slurries[J]. CIESC Journal, 2015, 66(10): 4202-4210.

参考文献 20

[1]	Zhou Mingsong (周明松), Qiu Xueqing (邱学青),Wang Weixing (王卫星). Advance in the dispersants of coal water slurry [J]. Chemical Industry and Engineering Progress (化工进展), 2004, 23 (8): 846-851.
[2]	Zhu Junfeng, Zhang Guanghua, Miao Zhuo, et al. Synthesis and performance of a comblike amphoteric polycarboxylate dispersant for coal-water slurry [J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2012, 41 (2): 101-107.
[3]	Zhang Guanghua (张光华), Qu Qianqian (屈倩倩), Zhu Junfeng (朱军峰), Wang Peng (王鹏), Fu Xiaolong (付小龙),Wei Yingfei (卫颖菲). Synthesis and performance of SAS/MAA/MPEGMAA polycarboxylate dispersants [J].CIESC Journal (化工学报), 2014, 65 (8): 3290-3297.
[4]	Li Rong (李荣).The dynamic adsorption behavior and regulation of lignosulfonate at the interfaces [D]. Guangzhou: South China University of Technology, 2012.
[5]	Zhu Junfeng, Zhang Guanghua, Li Junguo, Zhao Fang. Synthesis adsorption and dispersion of a dispersant based on starch for coal-water slurry [J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2013, 42 (2): 165-171.
[6]	Zhu Junfeng (朱军峰), Li Yuanbo (李元博), Wang Zhuoni (王卓妮), Chang Xing (常兴), Zhang Guanghua (张光华). Study on application performance of polycarboxylate in different coal-water slurries [J]. Journal of Shaanxi University of Science & Technology (陕西科技大学学报), 2014, 32 (3): 84-88.
[7]	Hu Wenli (胡文莉). Study on adsorption performance of lignosulfonates on surface of solid particle [D]. Guangzhou: South China University of Technology, 2010.
[8]	Wu Gang (吴刚). Material Characterization and Application (材料结构表征及应用) [M]. Beijing: Chemical Industry Press, 2002: 356-357.
[9]	Zhou Mingsong (周明松),Qiu Xueqing (邱学青), Yang Dongjie (杨东杰). Adsorption property of lignin and naphthalene dispersants on coal-water interface [J]. Chemical Journal of Chinese Universities (高等学校化学学报), 2008, 29 (5): 987-992.
[10]	Qiu Xueqing (邱学青), Zhou Mingsong (周明松), Wang Weixing (王卫星). Dispersion of coal particles by sodium lignosulphonate with different molecular weights [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2005, 33 (2): 179-183.
[11]	Yang Dongjie (杨东杰), Guo Wenyuan (郭闻源), Li Xuzhao (李旭昭), Wang Yue (王玥), Qiu Xueqing (邱学青). Effects of molecular weight of grafted sulfonated ligninon its dispersion and adsorption properties as a dispersant for coal water slurries [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2013, 41 (1): 20-25.
[12]	Yu Yujie (虞育杰), Liu Jianzhong (刘建忠),Zhang Chuanming (张传名), Zhao Weidong (赵卫东), Zhou Junhu (周俊虎), Cen Kefa (岑可法). Slurrying characteristics of low-volatile coal and the rheological characteristics of coal water slurry [J]. Journal of Zhejiang University: Engineering Science (浙江大学学报: 工学版), 2011, 45 (2): 335-339.
[13]	Zhang Guanghua (张光华), Wei Hui (魏辉), Fei Fei (费菲). Research progress in synthesis of acrylic acid CWS additive [J]. Leather and Chemicals (皮革与化工), 2010, 27 (4): 35-38.
[14]	Sato T, Ruch R J. Stabilization of Colloidal Dispersions by Polymer Adsorption [M]. Marcel Dekker, Inc, 1980:1-2.
[15]	Xiong Weifeng (熊卫锋), Wang Dongmin (王栋民), Zuo Yanfeng (左彦峰), Wu Zengli (武增礼), Wang Zhenhua (王振华). Influence of side chain structure on dispersion adsorption properties of polycarboxylate superplasticizer [J]. New Building Materials (新型建筑材料), 2008, (6): 35-38.
[16]	Mi Xiaohui (米小慧), Li Xiaorui (李小瑞), Li Peizhi (李培枝), Wang Chen (王晨). IA/AA/AMPS coal-water slurry preparation and characterization of dispersant [J]. Journal of Functional Materials (功能材料), 2012, 43 (23): 3261-3264.
[17]	Zhao Fang (赵方), Zhang Guanghua (张光华), Zhu Junfeng (朱军峰). Preparation and performance study of starch coal-water mixtures dispersant [J]. Journal of China Coal Society (煤炭学报), 2012, 37 (2): 456-461.
[18]	Zou Lizhuang (邹立壮), Zhu Shuquan (朱书全), Wang Xiaoling (王晓玲), Guo Xiangkun (郭相坤), Cui Guangwen (崔广文). Study on the interaction between different CWS dispersants and coals (Ⅺ): Interface properties of dispersant-modified coal particle and its effect on the properties of CWS [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2006, 34 (2): 160-165.
[19]	Li Songlin (李松林), Zhou Yaping (周亚平), Liu Junji (刘俊吉). Physical Chemistry (物理化学) [M]. 5th ed. Beijing: Higher Education Press, 2009: 466.
[20]	Ran Qianping (冉千平), Miao Changwen (缪昌文), Liu Jiaping (刘加平), Shang Yan (尚燕), Mao Yonglin (毛永琳). Action mechanism and effect of side chain length of comb-like copolymer dispersant on dispersion of cement paste [J]. Journal of The Chinese Ceramic Society (硅酸盐学报), 2009, 37 (7): 1153-1159.

聚羧酸盐侧链长度对水煤浆分散性能的影响及其作用机理

Action mechanism and effect of side chain length of polycarboxylatedispersant on dispersion of coal-water slurries

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