|本期目录/Table of Contents|

[1]张虎元,张悦,张学超.钢结构防火涂料着装状态与温湿循环的关系[J].建筑科学与工程学报,2012,29(03):24-30.
　ZHANG Hu-yuan,ZHANG Yue,ZHANG Xue-chao.Relations of Fire Resistive Coating for Steel Structure and Cycles of Temperature and Humidity[J].Journal of Architecture and Civil Engineering,2012,29(03):24-30.
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钢结构防火涂料着装状态与温湿循环的关系(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
29卷
期数:
2012年03期
页码:
24-30
栏目:
出版日期:
2012-09-30

文章信息/Info

Title:
Relations of Fire Resistive Coating for Steel Structure and Cycles of Temperature and Humidity
作者:
张虎元1,2,张悦2,张学超2
1. 兰州大学 西部灾害与环境力学教育部重点实验室,甘肃 兰州 730000; 2. 兰州大学 土木工程与力学学院,甘肃 兰州 730000
Author(s):
ZHANG Hu-yuan1,2, ZHANG Yue2, ZHANG Xue-chao2
1. Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, Lanzhou University, Lanzhou 730000, Gansu, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, China
关键词:
钢结构;  防火涂料;  加速老化;  质量损失;  温湿循环;  耐久性;  涂层附着力
Keywords:
steel structure;  fire resistive coating;  accelerated aging;  mass loss;  cycle of temperature and humidity;  durability;  coating adhesion force
分类号:
TU545
DOI:
-
文献标志码:
A
摘要:
进行了钢结构防火涂料室内模拟加速老化试验,探讨了环境温湿度变化对防火涂料的物理着装状态及其耐久性的影响; 选择防火涂层厚度和温湿循环次数为变量,试验测定循环前后防火涂层外观、色差、微结构及粘结强度的变化。试验结果表明:随着温湿循环次数的增加,防火涂层发生质量损失、厚度减少、龟裂、颜色变暗泛黄及孔隙扩大现象; 防火涂料的初始涂层厚度越大,这种变化趋势越明显; 在测试的40次温湿循环范围内,防火涂层与钢板基材之间的附着力有提高的趋势,但随着循环次数的继续增加,附着力开始降低; 温湿循环相同时,薄层涂料的附着力大于厚层涂料; 与厚层防火涂层相比,薄层涂料物理着装状态受温湿循环次数影响较小,抵抗老化变形的能力较强,耐候性更高。
Abstract:
The accelerated aging test on a fire resistive coating(FRC)for steel structure was done to understand the effects of temperature and humidity variation on FRC physical properties and durability. In the laboratory aging test, FRC thickness and the cycles of temperature and humidity were controlled, and the phenomena including the surface aspect, color, microstructure and adhesion were observed. Test results indicate that FRC has a tendency in mass loss, thickness decrease, fracturing, darkening and yellowing in color, and pore enlargement after exposure to increase the cycles of temperature and humidity variations. The higher the FRC thickness is, the more obvious these phenomena are. Within the 40 cycles of temperature and humidity conducted, the adhesion between FRC coating and steel is found to be increased at the early cycles but decreased finally at the late cycles. After the exposure to same cycles of temperature and humidity, thinner FRC shows a higher adhesion compared to a thicker one. The final conclusion supported by the accelerated aging test is that a thin FRC possesses a better resistance and durability to weather variation.

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备注/Memo

备注/Memo:
收稿日期:2012-04-10
基金项目:“十一五”国家科技支撑计划项目(2010BAK67B16); 兰州大学“2010年度大学生创新创业行动计划”项目
作者简介:张虎元(1963-),男,甘肃宁县人,教授,博士研究生导师,工学博士,博士后,E-mail:zhanghuyuan@lzu.edu.cn。
更新日期/Last Update: 2012-09-20