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具有更佳尺寸稳定性的含噁唑基团的聚酰亚胺薄膜材料 被引量:1
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作者 汪卓颖 何兆洋 +4 位作者 丁兴成 高立江 刘仲明 李兴 王玮 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2023年第1期145-150,159,共7页
采用4,4'-二氨基二苯醚(4,4'-ODA)与2-(4-氨基苯基)-5-氨基苯并噁唑(DAPBO)作为二胺单体,通过改变二者的摩尔比,与3,3’,4,4’-联苯四甲酸二酐(s-BPDA)聚合,制备得到了一系列含有噁唑基团结构的聚酰亚胺薄膜。系统地对薄膜样品... 采用4,4'-二氨基二苯醚(4,4'-ODA)与2-(4-氨基苯基)-5-氨基苯并噁唑(DAPBO)作为二胺单体,通过改变二者的摩尔比,与3,3’,4,4’-联苯四甲酸二酐(s-BPDA)聚合,制备得到了一系列含有噁唑基团结构的聚酰亚胺薄膜。系统地对薄膜样品进行了红外光谱、差示扫描量热分析、热失重分析、动态力学热分析、热机械分析等表征。研究发现,随着二胺中DAPBO占比的增加,聚酰亚胺薄膜的热稳定性及玻璃化转变温度升高、热膨胀系数减小;当ODA与DAPBO的摩尔比为4:6时,聚酰亚胺薄膜的热膨胀系数与铜最接近,有望应用于柔性印刷线路板领域。 展开更多
关键词 聚酰亚胺 苯并噁唑 热膨胀系数 热机械分析
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Design and Application of Intelligent Diagnosis System for three Pumping Stations of Stamping Automation
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作者 Shidong Tang zhaoyang he +4 位作者 Youling Zhao Anyong Fang Kang Li Lei Mei Yongwei Tao 《Journal of Electronic Research and Application》 2021年第1期8-11,共4页
This paper focuses on the maintenance of automotive stamping automation equipment.Through long-term self-study and accumulated experience,we independently developed a process monitoring system based on the three pumpi... This paper focuses on the maintenance of automotive stamping automation equipment.Through long-term self-study and accumulated experience,we independently developed a process monitoring system based on the three pumping stations of clutch,tension pad and lubrication in the stamping automation production line,which is used for real-time monitoring and diagnosis in the automatic production process without stopping the machine,and for the detection of oil temperature change,high-pressure pipeline leakage and oil return pipe In this paper,the improved case has strong practicability,low development cost,and has been recognized by peers in terms of cost efficiency improvement,which is easy to be popularized. 展开更多
关键词 Intelligent diagnosis HMI process monit-oring Stamping automation Hydraulic lubrication system
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