State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
Molecules. 2022 Oct 11;27(20):6808. doi: 10.3390/molecules27206808.
In 2014, a new type of the fire-resistant paper based on ultralong hydroxyapatite (HAP) nanowires was reported by the author's research group, which had superior properties and promising applications in various fields, such as high-temperature resistance, fire retardance, heat insulation, electrical insulation, energy, environmental protection, and biomedicine. The wet end chemical properties of the fire-resistant paper pulp are very important for papermaking and mechanical performance of the paper, which play a guiding role in the practical production of the fire-resistant paper. In this paper, the wet end chemical properties of a new kind of fire-resistant paper pulp based on ultralong HAP nanowires are studied for the first time by focusing on the wet end chemical parameters, the effects of these parameters on the properties such as flocculation, retention, draining, and white water circulation of the fire-resistant paper pulp, and their effects on the properties of the as-prepared fire-resistant paper. The experimental results indicated that the wet end chemical properties of the new kind of fire-resistant paper pulp based on ultralong HAP nanowires were unique and entirely different from those of the traditional paper pulp based on plant fibers. The wet end chemical properties of the fire-resistant paper pulp were significantly influenced by the inorganic adhesive and its content, which affected the runnability of the paper machine and the properties of the as-prepared fire-resistant paper. The flocculation properties of the fire-resistant paper pulp based on ultralong HAP nanowires were affected by the conductivity and Zeta potential. The addition of the inorganic adhesive in the fire-resistant paper pulp based on ultralong HAP nanowires could significantly increase the conductivity of the fire-resistant paper pulp, reduce the particle size of paper pulp floccules, and increase the tensile strength of the fire-resistant paper. In addition, the fire-resistant paper pulp based on ultralong HAP nanowires in the presence of inorganic adhesive exhibited excellent antibacterial performance. This work will contribute to and accelerate the commercialization process and applications of the new type of the fire-resistant paper based on ultralong HAP nanowires.
2014 年，作者研究小组报道了一种基于超长羟基磷灰石（HAP）纳米线的新型防火纸，该防火纸具有优异的性能，在高温抗性、阻燃性、隔热、电绝缘、能源、环境保护和生物医学等各个领域都具有广阔的应用前景。防火纸浆的湿端化学性质对造纸和纸张的机械性能非常重要，对防火纸的实际生产具有指导作用。本文首次研究了一种基于超长 HAP 纳米线的新型防火纸浆的湿端化学性质，重点研究了湿端化学参数对防火纸浆絮聚、保留、排水和白水循环等性能的影响，以及它们对所制备防火纸性能的影响。实验结果表明，基于超长 HAP 纳米线的新型防火纸浆的湿端化学性质是独特的，与传统的基于植物纤维的纸浆完全不同。防火纸浆的湿端化学性质受无机胶黏剂及其含量的显著影响，这会影响造纸机的运行性能和所制备防火纸的性能。基于超长 HAP 纳米线的防火纸浆的絮聚性质受电导率和 Zeta 电位的影响。在基于超长 HAP 纳米线的防火纸浆中添加无机胶黏剂可以显著提高防火纸浆的电导率，减小纸浆絮聚体的粒径，并提高防火纸的拉伸强度。此外，在存在无机胶黏剂的情况下，基于超长 HAP 纳米线的防火纸浆表现出优异的抗菌性能。这项工作将有助于并加速基于超长 HAP 纳米线的新型防火纸的商业化进程和应用。
