College of Light-Industry and Textile Engineering, Qiqihar University, Qiqihar 161006, China.
College of Architecture and Civil Engineering, Qiqihar University, Qiqihar 161006, China.
Molecules. 2022 Jan 25;27(3):796. doi: 10.3390/molecules27030796.
Geopolymers have high early strength, fast hardening speed and wide sources of raw materials, and have good durability properties such as high temperature resistance and corrosion resistance. On the other hand, there are abundant sources of plant or cellulose fibers, and it has the advantages of having a low cost, a light weight, strong adhesion and biodegradability. In this context, the geopolymer sector is considering cellulose fibers as a sustainable reinforcement for developing composites. Cellulosic-fiber-reinforced geopolymer composites have broad development prospects. This paper presents a review of the literature research on the durability of cellulosic-fiber-reinforced geopolymer composites in recent years. In this paper, the typical properties of cellulose fibers are summarized, and the polymerization mechanism of geopolymers is briefly discussed. The factors influencing the durability of cellulosic-fiber-reinforced geopolymer composites were summarized and analyzed, including the degradation of fibers in a geopolymer matrix, the toughness of fiber against matrix cracking, the acid resistance, and resistance to chloride ion penetration, high temperature resistance, etc. Finally, the influence of nanomaterials on the properties of geopolymer composites and the chemical modification of fibers are analyzed, and the research on cellulosic-fiber-reinforced geopolymer composites is summarized.
地质聚合物具有早期强度高、硬化速度快、原料来源广泛的特点，具有耐高温、耐腐蚀等优良的耐久性。另一方面，植物或纤维素纤维的来源丰富，具有成本低、重量轻、附着力强和可生物降解等优点。在此背景下，地质聚合物领域正在考虑将纤维素纤维作为开发复合材料的可持续增强材料。纤维素纤维增强地质聚合物复合材料具有广阔的发展前景。本文对近年来纤维素纤维增强地质聚合物复合材料耐久性的文献研究进行了综述。本文总结了纤维素纤维的典型性能，并简要讨论了地质聚合物的聚合机理。总结和分析了影响纤维素纤维增强地质聚合物复合材料耐久性的因素，包括纤维在地质聚合物基体中的降解、纤维对基体开裂的韧性、耐酸、抗氯离子渗透、耐高温等。最后，分析了纳米材料对地质聚合物复合材料性能的影响以及纤维的化学改性，并对纤维素纤维增强地质聚合物复合材料的研究进行了总结。
