电泳沉积海藻酸钠/碳纳米管修饰高模碳纤维表面

被引：3
|
作者：
田艳红
魏旭峰
张学军
机构：
[1] 北京化工大学材料科学与工程学院
来源：
北京化工大学学报(自然科学版) | 2022年 / 49卷 / 03期
关键词：
高模碳纤维; 表面改性; 碳纳米管; 海藻酸钠; 电泳沉积;
D O I：
10.13543/j.bhxbzr.2022.03.003
中图分类号：
TB332 [非金属复合材料]; TQ342.742 [];
学科分类号：
摘要：
采用纳米材料增加碳纤维(CF)的表面粗糙度及活性官能团，不仅可以改善CF增强复合材料的界面结合状态，而且不会对CF本体造成损伤，是一种极具发展潜力的新型CF表面改性手段。使用电泳沉积技术(EPD)将碳纳米管(CNTs)沉积在高模CF表面，然后与环氧树脂(EP)复合，制备了单向纤维增强层压板(CF/EP复合材料)。使用万能拉力机测试CF/EP复合材料的层间剪切强度(ILSS),结果表明，在电压为6 V时制备的CF/EP复合材料的ILSS为58.9 MPa,与未经EPD处理的CF/EP复合材料(ILSS=52.2 MPa)相比提高了12.8%。同时，通过EPD制备了海藻酸钠与CNTs共沉积修饰的高模CF,海藻酸钠的加入增加了CNTs与CF表面的黏附性及氧含量，提高了纤维表面对树脂基体的浸润性。当CNTs的质量浓度为0.3 mg/mL、海藻酸钠的质量浓度为1 mg/mL、EPD电压为8 V时，所制备的CF/EP复合材料的ILSS可达68.3 MPa,与未经EPD处理的CF/EP复合材料相比提高了30.8%。
引用
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页码：16 / 21
页数：6
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