工艺参数对三维针刺预制体力学性能的影响  

Influence of process parameters on mechanical properties of 3D needled preforms

作　　者：卢晨 荆云娟 张亮儒 王嘉宁 张正博 LU Chen;JING Yunjuan;ZHANG Liangru;WANG Jianing;ZHANG Zhengbo(Shaanxi Yuanfeng New Material Technology Co.,Ltd.,Xi'an 710038,Shaanxi,China)

机构地区：[1]陕西元丰新材料科技有限公司,陕西西安710038

出　　处：《上海纺织科技》2024年第11期15-18,共4页Shanghai Textile Science & Technology

摘　　要：采用不同工艺参数制备三维针刺预制体并测试其力学性能,探究不同针刺密度和针刺深度对力学性能的影响。结果显示:针刺密度和针刺深度协同影响预制体力学性能,且两者分别对预制体面内拉伸性能和层间拉伸性能的影响机理类似。基于响应面法研究了多个针刺参数对面内和层间拉伸强度的综合影响,构建了多工艺因素-多目标性能关联数学模型。得出拉伸强度和工艺参数的优化值为:针刺密度23针/cm^(2),针刺深度11 mm,面内拉伸强度5.71 MPa;针刺密度29针/cm^(2),针刺深度14 mm,层间拉伸强度42.63 kPa。Three-dimensional(3D)needling preforms are prepared with different processing parameters and their mechanical properties are tested to investigate the effects of needling density and needling depth on mechanical properties.The results show that the mechanical properties of the preform are affected by needle density and needle depth synergistically,and the effects of the two factors on the in-plane and interlaminar tensile properties of the preform are similar.Based on response surface methodology(RSM),the comprehensive effect of several needling processing parameters on in-plane and interlaminar tensile strength is studied,and a multi process factor multi-objective performance correlation mathematical model was constructed.The optimum values of tensile strength and processing parameters are obtained as follows:the needling density is 23 N/cm~2,the needling depth is 11 mm,the in-plane tensile strength is 5.71 MPa;the needling density is 29 N/cm~2,the needling depth is 14 mm,and the interlaminar tensile strength is 42.63 KPa.

关 键 词：针刺预制体 工艺参数 力学性能 响应面分析 

分 类 号：TS174.6[轻工技术与工程—纺织材料与纺织品设计]