摘要
传统的K 2O·n SiO2基复合防火玻璃由于模数(n约为3.4左右)较低,在使用过程中易受环境限制,耐低温性能较差。针对该缺陷,利用具有核壳结构、高固含、低粘度的K 2O·n SiO2基防火液作为防火中间层的基材,通过对模数、抗冷凝剂用量的研究,结合DSC测试对防火层材料的分析,发现自由水对复合防火玻璃耐低温性能具有重要影响,结果表明:当复合防火玻璃模数为4.0~4.3时,添加8%的抗冷凝剂,在确保防火层具有良好的耐候性能的同时,有效的降低了体系中自由水含量,解决了防火中间层材料耐低温性能差的缺点,保证复合防火玻璃在-20℃的低温下正常使用。
The traditional composite fire-resistant glass based on K2O·n SiO2 is easy to be restricted by environment and has poor low temperature resistance because of its low modulus(about 3.4).Against this defect,the K2O·n SiO2 solution with the core-shell structure was used as the base material of fire-retardant intermediate layer,which has the high solid content and low viscosity.Through the study of modulus and anti-condensation agent,combined with DSC test analysis of fire-retardant layer materials,it was found that free water had an important influence on the low-temperature resistance of composite fire-resistant glass.The results show that when the composite fire-resistant glass module is 4.0-4.3 with 8%anti-condensing agent added,while ensuring excellent weather resistance of the fire-retardant layer,the free water content in the system reduces effectively.The multi-laminated fire-resistant glass overcome the shortcoming of the low-temperature resistance of the fire-resistant intermediate layer material,and satisfies the normal use at a low temperature of -20℃.
作者
户云婷
臧曙光
穆元春
HU Yun-ting;ZANG Shu-guang;MU Yuan-chun(China Building Materials Academy,Beijing 100024,China)
出处
《硅酸盐通报》
CAS
北大核心
2019年第9期2979-2984,2991,共7页
Bulletin of the Chinese Ceramic Society
关键词
复合防火玻璃
模数
耐低温性能
耐辐射性能
multi-laminated fire-resistant glass
modulus
low temperature resistance
anti-ultraviolet irradiation performance
