- 目录
- 保温材料与建筑节能
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纤维增强泡沫玻璃陶瓷复合建筑保温材料研究
作者：仝凡1，王小山2，屠浩驰2，阮华2，李陆宝2，王智宇1
（1.浙江大学 材料科学与工程学院，浙江 杭州 310027；2.宁波荣山新型材料有限公司，浙江 宁波 315800）
摘要：在Na2O-B2O3-Al2O3-SiO2-H2O系水合玻璃溶胶中外掺短切玻璃纤维和粉煤灰，经2步热处理工艺：包含低温发泡热处理及高温去羟基化热处理，制备纤维增强低温泡沫玻璃陶瓷复合材料。试验结果表明：掺入玻璃纤维后，复合材料在去羟基化热处理后体积收缩率较未掺入玻璃纤维时降低了16.4%，抗压强度提高了5%～38%，且玻璃纤维直径越大，复合材料的体积收缩越小，增强效果越好。所制备的复合建筑保温材料体积密度为174～207 kg/m3，抗压强度为0.39～0.45 MPa，导热系数为0.061 W/（m·K），软化系数为0.87～0.89。
关键词：胶体化学法；玻璃纤维；玻璃陶瓷；复合材料；体积收缩
中图分类号：TU55+1.33 文献标识码：A 文章编号：1001-702X（2019）09-0113-04
Research of fiber reinforced foam glass ceramic composite thermal insulation building materials
TONG Fan1，WANG Xiaoshan2，TU Haochi2，RUAN Hua2，LI Lubao2，WANG Zhiyu1
（1.School of Material Science and Engineering，Zhejiang University，Hangzhou 310027，China；
2.Ningbo Rongshan Advanced Materials Co. Ltd.，Ningbo 315800，China）
Abstract：Fiber reinforced low-temperature foam glass ceramic composites were prepared by Na2O-B2O3-Al2O3-SiO2-H2O hydrated glass sol，with the addition of crystalline mineral powder fly ash and glass fiber. The two-step heat treatment process includes foaming at low temperature and getting rid of the hydroxyl at high temperature. The results show that after the introduction of glass fiber，the volume shrinkage of the material decreases by 16.4% and the compressive strength increases by 5%～38% compared with that without the introduction of glass fiber. The larger the diameter of glass fiber，the smaller the volume shrinkage and the better the reinforcement effect the material. Finally，the composite building thermal insulation materials were prepared，with density 174～207 kg/m3，compressive strength 0.39～0.45 MPa，thermal conductivity 0.061 W/（m·K） and softening coefficient 0.87～0.89.
Key words：colloidal chemistry，glass fiber，glass ceramics，composites，volume shrinkage