摘要
讨论了电子布开纤效果的评价方法,将其归纳为布面测试法、截面测试法、透气性测试法、浸润性测试法4类。在现有评价方法的基础上,提出部分改良方法。基于图像分割的孔隙率自动测量法,将电子布正面图像通过二值化阈值处理得到黑白图像,通过计算孔隙像素点占总像素点的百分比,以孔隙率在开纤前后的变化评价开纤效果。结果表明,开纤布孔隙率的降幅达35%~58%。通过对布样截面中纱线屈曲波高的测量发现,经纬纱的屈曲波高在开纤后下降了5%~11%。通过对比树脂混合液在电子布上的接触角发现,接触角在开纤后下降了12%~27%。根据不同布种和需求,结合多种方法综合评价电子布的开纤效果,可以帮助电子布和覆铜板企业在5G时代满足对开纤布更高的要求。
This paper discusses the evaluation methods for the effects of spreading strands in electronic fabrics,which can be divided into four kinds,including fabric surface test method,cross section test method,air permeability test method and wettability test method.Based on the current evaluation methods,some improved methods were proposed.Based on the automatic measuring method for the porosity of image segmentation,the front image of electronic fabric was processed by binarization threshold to obtain black-and-white image.By calculating the percentage of pore pixels in the total pixels,the effects of spreading strands were evaluated by the change of porosity before and after spreading.The results showed that the porosity of the spread-strand fabric decreased by 35-58%.The buckling wave height of warp and weft yarns decreased by 5-11%after spreading found by measuring the buckling wave height of warp and weft yarn in the cross section of the fabric.By comparing the contact angle of the resin mixture on the electronic fabric,it was found that the contact angle decreased by 12-27%after spreading.According to different fabric types and demands,and by combining various methods,the evaluation of the effects of spreading strands in electronic fabrics could help electronic fabric and CCL enterprises to meet higher requirements for spread-strand fabrics in 5G era.
作者
王曦
郑天勇
宁祥春
代义飞
Wang Xi;Zheng Tianyong;Ning Xiangchun;Dai Yifei(Tianjin Polytechnic University,Tianjin 300387;Linzhou Guangyuan New Material Technology Co.,Ltd.,Anyang 456500)
出处
《玻璃纤维》
CAS
2020年第5期11-16,共6页
Fiber Glass
关键词
电子布
开纤布
经纬纱
孔隙率
透气率
接触角
electronic fabric
spread-strand fabric
warp and weft yarns
porosity
air permeability
contact angle
