等离子体射流载气流量大小对玻璃纤维改性效果影响的研究

通过大气压等离子体射流在玻璃纤维（GF）表面沉积氧化硅（SiO_x）纳米颗粒的方法改善玻璃纤维增强聚丙烯（GFRP）复合材料的界面结合性能，利用扫描电子显微镜、原子力显微镜和X射线光电子能谱等表征分析了改性纤维的表面形貌、化学成分、润湿性能和复合材料的界面结合性能，并考察了等离子体射流载气流量大小对GF改性效果的影响。结果表明，当载气流量为40 mL/min时，GF的改性效果最好，且此时GF的表面能相比对照组提高了43.18 %，GFRP复合材料的层间剪切强度提高了30.79 %；经过等离子体处理后，GF的表面粗糙度增大，极性官能团增多，复合材料的界面结合性能提升。

Influence of gas flow of plasma jet carrier on modification effect for glass fiber

In this study， a cold atmospheric pressure plasma jet was conducted to modify glass fiber. To improve the interfacial bonding properties of glass?fiber?reinforced polypropylene composites， SiO_x nanoparticles were polymerized on the fiber surfaces. The properties of the modified fibers and composites， including surface morphology， chemical composition， wettability and interfacial bonding properties， were studied systematically to understand the influence of gas flow rate of the carrier on the modification effect of glass fiber. The optimal parameter was determined to be a gas flow rate of 40 mL/min. The results indicated that after plasma treatment， the fibers achieved an improvement in the surface energy by 43.18 % compared to that of the control samples. The interlaminar shear strength of glass?fiber?reinforced polypropylene composites was improved by 30.79 % when compared to the control. The high surface roughness and the content of oxygen?containing polarity functional groups in the glass fiber after the plasma treatment promoted an enhancement in interlaminar shear strength.