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材料导报  2026, Vol. 40 Issue (10): 25040033-8    https://doi.org/10.11896/cldb.25040033
  高分子与聚合物基复合材料 |
氧化石墨烯接枝聚羧酸减水剂在水泥基材料中的性能与作用机理
周冰洁1, 刘晓1,*, 刘爽1,2, 李时雨3, 李润丰1,2, 王琴4, 张鹏宇2,5
1 北京工业大学材料科学与工程学院,材料循环低碳再生全国重点实验室,北京 100124
2 北京市建筑材料科学研究总院,北京 100041
3 中煤科工生态环境科技有限公司,北京 100013
4 北京建筑大学建筑结构与环境修复功能材料北京市重点实验室,北京 100044
5 天津市建筑材料科学研究院有限公司,天津 300381
Performance and Working Mechanism of Graphene Oxide Grafted Polycarboxylate Superplasticizer Applied in Cement-based Materials
ZHOU Bingjie1, LIU Xiao1,*, LIU Shuang1,2, LI Shiyu3, LI Runfeng1,2, WANG Qin4, ZHANG Pengyu2,5
1 State Key Laboratory of Materials Low-Carbon Recycling, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
2 Beijing Building Materials Academy of Sciences Research, Beijing 100041, China
3 CCTEG Ecological Environment Technology Co., Ltd., Beijing 100013, China
4 Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
5 Tianjin Building Materials Science Research Academy Co.,Ltd., Tianjin 300381, China
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摘要 当前,氧化石墨烯(GO)在水泥基材料中的应用已引起广泛关注。然而,GO的掺入会对水泥浆体产生显著的增稠增粘效应,从而限制其实际应用。本工作首先通过丙烯酸(AA)与GO反应制得丙烯酸改性氧化石墨烯(AA-GO),再将其与丙烯酸(AA)、异戊烯醇聚氧乙烯醚(TPEG)共聚,合成丙烯酸改性氧化石墨烯聚羧酸减水剂(AA-GO-PCE)。通过红外光谱(IR)、热重分析(TG)和X射线光电子能谱表征了AA-GO-PCE的分子结构,测试了掺AA-GO-PCE水泥浆体的流动度、流变性能和力学性能,并揭示了其作用机理。结果表明:更高的Zeta电位和更小的粒径赋予水泥颗粒优异分散性,AA-GO-PCE可使水泥浆体流动度较GO提升95.2%;掺AA-GO-PCE的砂浆28 d抗折强度和抗压强度较空白组分别提高26.41%和17.57%,表明其仍保持增强增韧效果。此外,AA-GO-PCE通过促进水化反应、细化氢氧化钙尺寸及改变晶体形貌来提升力学性能,这与GO的作用机理存在本质差异。
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周冰洁
刘晓
刘爽
李时雨
李润丰
王琴
张鹏宇
关键词:  氧化石墨烯  聚羧酸减水剂  接枝改性  水泥基材料    
Abstract: Nowadays, the application of graphene oxide (GO) in cement-based materials has attracted significant attention. However, GO addition exhibits a pronounced thickening and viscosifying effect on cement paste, limiting its practical application. In this work, GO was grafted with acrylic acid (AA) to yield AA-GO, then copolymerized with AA and methallyl poly (ethylene glycol) ether (TPEG) to synthesize acrylic acid-mo-dified graphene oxide polycarboxylate superplasticizer (AA-GO-PCE). The molecular structure of AA-GO-PCE was confirmed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The fluidity, rheology and mechanical properties of cement pastes containing AA-GO-PCE were evaluated. Furthermore, the working mechanism of AA-GO-PCE in cement-based materials was revealed. Results demonstrated that AA-GO-PCE significantly improves the cement paste fluidity by 95.2% compared to GO, because of its higher Zeta potential and smaller particle size resulting in better dispersibility. The mortar containing AA-GO-PCE gets a 26.41% and 17.57% increase in flexural strength and compressive strength at 28 d curing, respectively, compared to the blank (reference group containing PCE), indicating that it still maintains strengthening and toughening effects. In addition, the mechanism of AA-GO-PCE to improve the mechanical properties is achieved by promoting hydration, refining the size of calcium hydroxide (CH) and changing the crystal morphology, which is different from the mechanism of GO.
Key words:  graphene oxide    polycarboxylate superplasticizer    graft modification    cement-based materials
发布日期:  2026-06-03
ZTFLH:  TQ172  
基金资助: 北京市教委-市自然基金委联合资助项目(KZ20231000510)
引用本文:    
周冰洁, 刘晓, 刘爽, 李时雨, 李润丰, 王琴, 张鹏宇

. 氧化石墨烯接枝聚羧酸减水剂在水泥基材料中的性能与作用机理[J]. 材料导报, 2026, 40(10): 25040033-8.
ZHOU Bingjie, LIU Xiao, LIU Shuang, LI Shiyu, LI Runfeng, WANG Qin, ZHANG Pengyu. Performance and Working Mechanism of Graphene Oxide Grafted Polycarboxylate Superplasticizer Applied in Cement-based Materials. Materials Reports, 2026, 40(10): 25040033-8.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.25040033  或          https://www.mater-rep.com/CN/Y2026/V40/I10/25040033
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