低温等离子体改性芳纶1414的研究Study on Para-Aromatic Polyamide Fiber Modified by Low Temperature Plasma
武昊岩,谢光银
WU Hao-yan,XIE Guang-yin
摘要(Abstract):
对芳纶1414进行低温等离子体表面改性以改善其构成复合材料时的界面黏结性能。设计正交试验,得到低温等离子体处理芳纶1414的最佳条件为放电功率100 W,处理时间300 s,放电压强20 Pa。采用电子单纤维强力机、纤维摩擦因数测定仪、纤维接触角测量仪、扫描电子显微镜和傅里叶变换红外光谱仪对改性前后的芳纶1414进行性能表征。结果表明:经过低温等离子体改性的芳纶1414的断裂强力较原样下降了6.3%,静摩擦因数上升了15.7%,表面接触角减小了36.8%,纤维表面出现微小均匀的凹槽,增大了比表面积,引入了自由基团,增大了表面反应活性,从而改善了与树脂基体复合时的黏结强度。
Low temperature plasma surface modification of aramid 1414 is used to improve the interfacial properties of composites.Orthogonal experiment was designed,and the best conditions for low temperature plasma treatment of aramid 1414 were 100 W discharge power,300 s processing time,and 20 Pa discharge voltage.The electronic single fiber tenacity tester,fiber friction coefficient tester,fiber contact angle measurer,scanning electron microscope and Fourier transform infrared spectrum were used to characterize the properties of aramid 1414 before and after modification.The results show that the aramid 1414 fiber modified by low temperature plasma has a 6.3% lower breaking strength than before,a static friction coefficient increases by 15.7%,a surface contact angle reduces by 36.8%,and small uniform grooves appear on the fiber surface,which increases the specific surface area,introduces free radical groups,and increases the surface activity,thereby improves the bonding strength when compositing with the resin matrix.
关键词(KeyWords):
芳纶1414;低温等离子体;纤维改性;正交试验
para-aromatic polyamide fiber;low temperature plasma;fiber modification;orthogonal test
基金项目(Foundation): 陕西省产业用纺织品协同创新中心科研资助项目(2015ZX—05)
作者(Author):
武昊岩,谢光银
WU Hao-yan,XIE Guang-yin
DOI: 10.16090/j.cnki.hcxw.2020.03.005
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- 芳纶1414
- 低温等离子体
- 纤维改性
- 正交试验
para-aromatic polyamide fiber - low temperature plasma
- fiber modification
- orthogonal test