玄武岩长丝表面低温等离子体处理及其浆丝集束性能

Low temperature plasma treatment of basalt filament surface and sizing strand integrity thereof

针对玄武岩纤维表面光滑、集束性差且呈化学惰性,纤维浸润性差导致其与浆液黏附力不足的缺陷,采用低温等离子体技术改性玄武岩长丝表面,以改善玄武岩长丝浆丝时集束性能。探讨放电功率、放电气压及放电时间对玄武岩长丝表面形态、静摩擦因数、动摩擦因数及力学性能的影响,借助扫描电子显微镜对改性玄武岩长丝的表观形貌进行表征,分析改性玄武岩长丝与纺织浆料黏附性能的关系。结果表明:低温等离子体改性后玄武岩长丝表面粗糙程度提高,比表面积增大,摩擦因数增加,玄武岩长丝与纺织浆料的黏附性增强,集束性明显改善;当放电功率为300 W,放电气压为30 Pa,放电时间为7 min时,改性玄武岩长丝上浆率高,浆丝集束性好。

In order to solve the poor adhesion between basalt fiber and sizing solution due to smooth surface,poor strand integrity,chemical inertness and low fiber wettability,low temperature plasma technology was used to modify the surface of basalt filament to improve its sizing strand integrity.The influence of discharge power,discharge pressure and discharge time on the morphology,static and dynamic friction factors and mechanical properties of basalt filament were studied,and the morphological structure of the modified basalt filament was characterized by scanning electron microscopy.Moreover,the relationship between the modified filament and the textile size adhesion performance was investigated.It was found that the low temperature plasma modification can increase the surface roughness,specific surface area and friction coefficient of the basalt filament,which leads to the higher adhesion between basalt filament and textile sizes.In addition,the modified basalt filament have good sizing adhesion and strand integrity under the optimal conditions of discharge power 300 W,pressure 30 Pa and time of 7 min.