- 目录
- 新型墙体材料
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改善玉米秸秆板材阻燃性的有效途径
作者：王建恒1，徐一飞2，张鹏宇1，刘彤1，张家钊2，毛志毅1，滕藤2
（1.天津市建筑材料科学研究院有限公司，天津 300381；2.天津市贰拾壹站检测技术有限公司，天津 300381）
摘要：以水玻璃为无机胶凝材料与玉米秸秆进行复合得到玉米秸秆板材。采用无机盐溶液对玉米秸秆碎料颗粒进行预处理，按适当比例加入超细滑石粉、超细二氧化硅等辅料，得到阻燃性能、强度优异的玉米秸秆板材。实测氧指数为41%，燃烧性能达到A（A2）级；内结合强度为0.73 MPa，优于GB/T 12626.4—2015《湿法硬质纤维板第4部分：干燥条件下使用的普通用板》标准要求。
关键词：玉米秸秆板材；水玻璃；超细滑石粉；超细二氧化硅；阻燃性
中图分类号：TU531.6；TS653 文献标识码：A 文章编号：1001-702X（2019）02-0142-03
An effective way to improve the flame retardancy of corn straw board
WANG Jianheng1，XU Yifei2，ZHANG Pengyu1，LIU Tong1，ZHANG Jiazhao2，MAO Zhiyi1，TENG Teng2
（1.Tianjin Building Materials Academy，Tianjin 300381，China；
2.The 21th Station of Quality Supervision and Inspection Bureau，Tianjin 300381，China）
Abstract：In this paper，corn stalk board was prepared by combining water glass and cornstalk. Corn stalk granules were pretreated by inorganic salt solution，and ultrafine talcum powder，superfine silica and other auxiliary materials were added in proper proportion. By this way，it's flame retardancy and internal bonding strength were improved. The measured oxygen index is 41%，the combustion performance reaches A（A2） grade，and the internal bonding strength is 0.73 MPa，which is better than the requirements of standard GB/T 12626.4—2015 "Wet Hard Fiberboard Part 4：Common Plates Used under Dry Conditions".
Key words：corn straw board，water glass，ultrafine talcum powder，superfine silica，flame retardancy