1. 北京交通大学, 机械与电子控制工程学院, 北京 100044
2. 固废资源化利用与节能建材国家重点实验室, 北京 100041
3. 北京金隅集团股份有限公司, 北京 100013
| 摘 要: | 本文旨在对纳米碳酸钙的制备工艺、表面改性工艺及其建材领域中的应用情况进行综述,为拓展纳米碳酸钙在相关领域中的应用提供参考和借鉴。首先,对纳米碳酸钙的制备工艺进行概述,对沉淀法、乳液法、聚合物介导法、膜过滤法、生物法等的工艺特性进行详细阐述;其次,论述纳米碳酸钙表面改性的重要性,对比干法改性和湿法改性,着重对各种改性剂如表面活性剂、不饱和有机酸、偶联剂、有机低聚物、水溶性聚合物等的改性效果进行分析,结果表明,适当的改性剂通过增加纳米碳酸钙与聚合物间界面结合力,阻碍聚合物发生应力集中与断裂,从而提高聚合物的力学性能;最后,对纳米碳酸钙在建材领域中的应用现状进行阐述,尤其对纳米碳酸钙在沥青混合料改性、水泥替代与强化、钢结构防护涂层、阻燃剂等方面取得的进展进行总结。纳米颗粒的高填充性与润湿性提升建材抗压强度与耐侵蚀性,纳米碳酸钙的低成本促进其在建材中的应用。 |
| 关 键 词: | 纳米碳酸钙; 制备; 表面改性; 建材应用 |
| DOI: | 10.57237/j.mater.2024.02.002 |
1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
2. State Key Laboratory of Solid Waste Resource Utilization and Energy-saving Building Materials, Beijing 100041, China
3. BBMG Corporation, Beijing 100013, China
| Abstract: | This paper aims to systematically evaluate the fabrication process, surface modification process, and application in the field of construction materials, providing guidance and direction for expanding the application of CCNPs in related industries. First, the preparation procedure of CCNPs is carefully summarized, and the process properties of precipitation, emulsion, polymer mediated, membrane filtration, biological methods, etc., are delineated in detail. Secondly, the mechanism and impact of surface modifiers are discussed, and dry modification and wet modification are contrasted. Emphasis is placed on examining the modification effects of various modifiers such as surfactants, unsaturated organic acids, coupling agents, organic oligomers, water soluble polymers, etc. The results show that suitable modifiers can increase the interfacial bonding force between CCNPs and polymers, hinder stress concentration and fracture of polymers, thereby enhancing the mechanical properties of polymers. Finally, the current application status of CCNPs in the field of construction materials is expounded, especially the advances made by CCNPs in asphalt mixture modification, cement substitution and reinforcement, steel structure protective coatings, flame retardants, etc., are encapsulated. The superior filling and wetting properties of nanoparticles strengthen the compressive strength and corrosion resistance of construction materials, while the economical cost of CCNPs propels its application in construction materials. |
| Keywords: | Calcium Carbonate Nanoparticles; Preparation; Surface Modification; Building Materials Applications |
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