摘要
使用马来酸酐(MAH)对芳纶纤维(AFs)进行刻蚀处理,以期改善其与尼龙6(PA6)的界面相容性,进而提高AFs/PA6复合材料的力学性能。将不同时间梯度处理后的AFs与PA6经均匀共混、注塑制成AFs/PA6复合材料标准试样。采用FE-SEM、XPS、XRD和DSC研究了AFs表面形貌和元素含量以及AFs/PA6复合材料的冲击断面形貌、晶型、晶粒和结晶度。结果表明:经过3h的刻蚀,AFs表面粗糙程度最大且表面含氧量最高。刻蚀AFs的加入有利于PA6晶粒细化并且形成α晶型。相对于纯PA6,AFs/PA6复合材料试样的内部更易形成α晶型,同时结晶度也得到提高。加入经表面处理的AFs有利于提高AFs/PA6复合材料的拉伸强度和弯曲强度,当加入刻蚀时间为3h的AFs时,AFs/PA6复合材料的力学性能达到最佳。
Maleic anhydride（MAH）was used to corrode aramid fibers（AFs）in order to improve the interfacial compatibility between AFs and polyamide 6（PA6）and increase the mechanical properties of AFs/PA6 composites.PA6was mixed with AFs treated with different time gradients uniformly and the standard samples of AFs/PA6 composites were injection molded.FE-SEM,XPS,XRD and DSC were used to study the surface morphologies and element contents of AFs and the impact fracture surface morphologies,crystal form,grain and crystallinities of AFs/PA6 composites.The results show that surface roughness and surface oxygen content of AFs reach the maximum after corrosion for 3h.The introduction of corroded AFs is beneficial for PA6 to refine grains and formαcrystal.The inner of AFs/PA6 composite samples tend to formαcrystal easily and the crystallinity has been improved compared with PA6.AFs/PA6 composites have higher tensile strength and bending strength after the addition of surface treated AFs,and mechanical properties of AFs/PA6 composites achieve maximum value when AFs are corroded for 3h.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2016年第8期1638-1644,共7页
Acta Materiae Compositae Sinica
基金
福建省科技计划引导性项目(2015H0016)
福州市科技计划(2014-G-72
2013-G-92)
关键词
马来酸酐
刻蚀
芳纶纤维
尼龙6
界面
力学性能
maleic anhydride
corrosion
aramid fibre
nylon 6
interface
mechanical properties
