压延工艺制备PTFE/SiO2复合材料的厚度均匀性优化  

Optimization of Thickness Uniformity in Calendering Process of PTFE/SiO2 Composites

作　　者：金霞 鲁思如 张立欣[1] 贾倩倩 王丽婧[1] JIN Xia;LU Si-ru;ZHANG Li-xin;JIA Qian-qian;WANG Li-jing(The 46th Research Institute of China Electonics Technology Group Corporation,Tianjin 300220,China)

机构地区：[1]中国电子科技集团公司第四十六研究所,天津300220

出　　处：《塑料工业》2020年第7期38-42,23,共6页China Plastics Industry

摘　　要：运用实验设计(DOE)工具,对压延工艺制备聚四氟乙烯/二氧化硅(PTFE/SiO2)复合材料的厚度均匀性进行优化。首先设计部分因子实验筛选显著因子;再设计全因子实验并进行方差分析,通过理论模型找到满足目标的压延工艺参数组合。结果显示,以旋转法、辊间隙分段微调、压延次数为4次时,压延辊对材料内部产生的机械应力得到有效释放,所制复合材料的厚度均匀性最优,厚度均值为0. 508 mm,标准偏差为0. 005 2,满足高频介电材料对复合材料厚度均匀性的苛刻要求。验证了采用优化的工艺参数连续三次实验制备的复合材料厚度一致性,结果显示过程能力指数(Cpk)为1. 45,说明压延工艺过程能力良好,具备连续实验的能力。The design of experiment(DOE) was used to optimize the thickness uniformity of the polytetrafluoroethylene(PTFE)/silicon dioxide(Si02) composites prepared by the calendering process.Firstly,a partial factor experiment was designed to select important factors.Secondly,a full factorial experiment was designed and the analysis of the experimental results was performed to obtain a theoretical model.The optimal calendering process parameter combination was obtained through the model.The results show when using the rotation method,segmented fine adjustment of the calender roll,and 4 calendering operations,the thickness uniformity of the composite material is the best,and the mechanical stress generated by the calender roll is effectively released.The average thickness and standard deviation of composite materials are 0.508 mm and 0.005 2,respectively.It fully meets the ultra-high requirements of high frequency dielectric materials on the thickness uniformity of PTFE/Si02 composites.The thickness consistency of three consecutive batches of composites prepared with optimized process parameters is verified.The results show that Cpk is 1.45.The calendering process is great and the capacity for continuous batch production is available.

关 键 词：压延工艺 聚四氟乙烯 复合材料 实验设计 过程能力指数 

分 类 号：TN304[电子电信—物理电子学]