何福善,高诚辉,郑开魁,林有希,杨发伟

• 1:福州大学材料科学与工程学院
• 2:福州大学机械工程及自动化学院

摘要(Abstract)：

天然竹纤维在增强树脂基复合材料的应用中存在与憎水性的树脂界面相容性差等问题。通过对竹纤维进行不同工艺蒸汽爆破处理,探索其对增强复合摩阻材料界面和性能影响。结果表明,竹纤维蒸爆处理使复合材料冲击强度提高10%以上,其中压力变化影响较小,而保压时间延长使材料冲击强度增大;蒸爆处理可改善材料高温摩擦系数,提高材料制动稳定性、抗热衰退性能和耐磨性。竹纤维在蒸爆压力2 MPa时保压240 s,摩阻材料具有较佳摩擦学性能。经蒸爆处理后竹纤维外表呈棉絮状,具有更明显的细小沟壑,比表面积增大,有利于提高竹纤维与树脂基体界面结合能力。未处理样磨损表面的竹纤维在高温时炭化烧蚀严重,基体在外力作用下被撕裂剥落,而蒸爆样表面仍有大量竹纤维存留并起增强作用,周围形成较稳定摩擦表面膜,保证了材料在高温下的摩擦学性能。

关键词(KeyWords)： 竹纤维;蒸汽爆破处理;摩阻材料;摩擦学性能

Abstract:

Keywords:

基金项目(Foundation): 国家教育部博士生导师基金(20113514110006);; 国家自然科学基金(51075074)

作者(Author): 何福善,高诚辉,郑开魁,林有希,杨发伟

DOI: 10.13289/j.issn.1009-6264.2014.10.002

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