复合材料中平纹机织物的压缩性能  

Compressibility of plain-woven fabrics in composite

作　　者：郭启微[1] 吴晓青[1] 

机构地区：[1]天津工业大学先进纺织复合材料教育部重点实验室,天津300160

出　　处：《纺织学报》2008年第5期42-45,共4页Journal of Textile Research

基　　金：天津市自然科学基金资助项目(06YFJMJC03100013604311)

摘　　要：针对RTM工艺中闭模时对织物造成的压缩问题,利用压缩试验对平纹机织物在受压时的厚度与纤维体积含量的变化和压缩参数进行研究,并采用CCD显微摄像仪获取了不同压缩程度下复合材料制件的横截面图像。结果表明:织物的干湿态和受压缩次数对织物的压缩性能有明显影响;织物在卸除载荷后发生部分回弹,初始织物的体积压缩性能随着压缩次数的增加而下降;从结构上看,纤维的间隙和富树脂区随着压缩程度的增大而减小,纱线的屈曲状态和横截面受压产生严重变形。Targeting at the problem of compressing of fabric resulting from closing of the mold in RTM,the changes in thickness and fiber volume fraction of plain-woven fabrics when compressed were studied along with compressing parameters and a series of cross-section images of composites at various degrees of compressing were captured under a microscope with a CCD camera.It was found that the wet or dry state of the fabric and compressing times have significant influence on its compressibility.The initial fabric bulk compressibility reduces with increasing compressing times while relaxation takes place after removing the load.In addition,the voids between the fiber and resin-rich areas decrease with increasing compressing load as observed from the microstructure image in which the yarn waveform and cross-section have deformed under compression.

关 键 词：平纹机织物 纤维体积含量 压缩参数 细观结构 RTM工艺 

分 类 号：TB332[一般工业技术—材料科学与工程]