摘要
通过酸洗、化学接枝的方法对短切聚酰亚胺纤维进行表面改性,并对不同配比的短切聚酰亚胺纤维增强混凝土进行了相关性能研究。结果表明,硅烷偶联剂成功接枝到聚酰亚胺纤维表面,并且改性后的聚酰亚胺纤维能够提高纤维在混凝土内的分散性,并对混凝土性能有较为明显的提升作用,w(改性聚酰亚胺纤维)=0.8%,混凝土的综合性能达到最优值。
Short-cut polyimide fiber was modified by pickling and chemical grafting,and the properties of short-cut polyimide fiber reinforced concrete with different proportions were studied.The results show that the silane coupling agent is successfully grafted onto the surface of polyimide fiber,and the modified polyimide fiber can improve the dispersion of fiber in concrete,and has a more obvious effect on the performance of concrete.When the added fiber mass fraction is 0.8%,the comprehensive performance of concrete reaches the optimal value.
作者
李特
田启超
LI Te;TIAN Qichao(Yangling Vocational and Technical College,Yangling 712100,China;PowerChina Beijing Engineering Corporation Limited,Beijing 100024,China)
出处
《化工科技》
CAS
2023年第2期5-9,共5页
Science & Technology in Chemical Industry
基金
国家自然科学基金项目(51479164)
杨凌职业技术学院基金项目(ZK21-13)。
关键词
聚酰亚胺
纤维增强
混凝土
性能
Polyimide
Fiber reinforced
Concrete
Performance
