摘要
采用涂覆有机-无机杂化涂层的方法对高硅氧纤维(HSGF)进行表面改性。涂覆前后的纤维表面特性采用XPS和AFM进行表征;采用浸泡法腐蚀实验研究了涂层对HSGF耐酸腐蚀能力的影响;通过测试界面剪切强度(IFSS)评价了复合材料的界面粘结性能,并测试了涂层前后HSGF及其增强磷酸盐基复合材料力学性能。结果表明,聚甲基苯基硅氧烷(PSI)涂层可有效地保护高硅氧纤维,阻碍磷酸盐基体/高硅氧纤维之间的界面反应,降低磷酸对其的腐蚀速率,调节界面结合程度,使复合材料弯曲强度比未处理试样提高32%。
Organic-inorganic hybrid coating was used to modify the surface of HSGF. Surface characteristics of fiber before and after coated were confirmed by X-ray photo electron spectroscopy （XPS） and atomic force microscopy（AFM）, respectively. The effect of coating on acid-resistance of fiber was investigated by using immersion method. The interface bonding of composites was evaluated by interfaeial shear strength test. The variety of mechanical properties of fiber and composites were measured using electronic universaltesting machine. Result shows that poly（methylphenylsiloxane） coating can effectively protect high silica glass fiber by preventing the harmful interface reaction and decreasing corrosion rate of phosphate to fiber. The flexural strength value of the composites with modified sizing is 32% higher than that of the untreated ones.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2009年第4期85-89,共5页
Journal of Aeronautical Materials
基金
航天创新科技基金资助项目(24409035)
