摘要
超细玻璃纤维棉毡具有优异的隔热、吸音和过滤性能以及A级不燃特性,高温热处理对其性能有显著影响。采用离心喷吹法制备超细玻璃纤维棉毡,然后在100~500℃及大气气压下进行热处理。通过金相显微镜、电子万能材料试验机和耐驰导热系数测试仪分别对棉毡的显微结构、力学性能和隔热性能进行测试。结果表明,随着处理温度上升,超细玻璃棉毡的纤维直径增大,棉毡孔隙直径减小,质量损失增加,并在400℃以后变化幅度显著提升;超细玻璃棉毡的抗撕裂强度逐渐下降,并在处理温度为300℃以上时下降非常迅速;导热系数逐渐升高,在400℃前上升平缓,400℃以后上升速率增加明显。
Ultrafine glass wool felt has excellent performance in heat insulation,sound absorption and filtration as well as A-level fire-retardant property,while high-temperature treatment has a great influence on its performance.In this paper,ultrafine glass wool felt is prepared by centrifugation and subsequently is heated in the temperature rang of 100—550 ℃.The microstructure,mechanical properties and thermal conductivity are characterized by metallurgical microscopy,universal materials tester and Netch thermal conductivity analyzer.The results show that,with the treatment temperature increasing,the diameter of the fiber and the mass loss increase while the pore diameter decreases,especially at 400℃ or higher temperature.The tensile strength decreases gradually,also obviously above 300℃.The thermal conductivity increases gradually,which rises gently below 400℃ but accelerates greatly after that.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2017年第4期580-585,共6页
Journal of Nanjing University of Aeronautics & Astronautics
基金
江苏高校优势学科建设工程(PAPD)资助项目
关键词
超细玻璃纤维棉毡
高温处理
显微结构
力学性能
隔热性能
ultrafine glass wool felt
high-temperature treatment
microstructure
mechanical property
thermal conductivity