光敏活性剂含量对PSPI薄膜性能的影响
Effect of photosensitizer content on the properties of PSPI thin films
卓效逵 1申杰 1艾霞 2刘禧行 1陈毅锋 1付蕾1
作者信息
- 1. 陕西理工大学材料科学与工程学院,陕西汉中 723000
- 2. 陕西华燕航空仪表有限公司,陕西汉中 723102
- 折叠
摘要
为探究光敏活性剂对光敏聚酰亚胺(PSPI)薄膜性能的影响,以2,2-二(3-氨基-4-羟基苯基)六氟丙烷(6FAP)、5-氨基-2-(4-氨基苯基)苯并咪唑(BIA)和3,3',4,4'-二苯酮四酸二酐(BTDA)为单体,合成聚酰亚胺低聚物,与聚乙二醇二丙烯酸酯(PEG400DA)、交联剂和光引发剂混合,涂膜光固化后得到PSPI薄膜,探究光敏活性剂PEG400DA含量对PSPI薄膜的热性能、亲水性能、力学性能、导电性能以及结构的影响.结果表明,制备出了含有聚酰亚胺特征峰的薄膜,随着PEG400DA含量增加,红外特征峰强度增强;PEG400DA质量分数为4%时,热稳定性最优,初始失重温度为343.12℃;随着PEG400DA含量增加,亲水性逐渐降低;拉伸强度会随着PEG400DA含量的增加而增大,但断裂伸长率在PEG400DA质量分数为6%时,达到最高值,为17.73%;随着电场强度的增大,PEG400DA含量越高,电导电流增大,当PEG400DA质量分数为8%时,导电性过强,失去使用价值.综合来看,光敏活性剂质量分数为6%时,PSPI薄膜的性能最优.
Abstract
To investigate the effect of photosensitive activator on the performance of photosensitive polyimide(PSPI)film,polymide oligomers were synthesized by using 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane(6FAP),2-(4-aminophenyl)-5-aminobenzimidazole(BIA),and 3,3',4,4'-diphenylketotetraacetic anhydride(BTDA)as monomers.The oligomer was mixed with polyethylene glycol diacrylate(PEG400DA),crosslinking agent,and photoinitiator to obtain a PSPI after photocuring.The thermal properties of the PSPI film were investigated based on the content of the photosensitive active agent PEG400DA the influ-ence of hydrophilicity,mechanical properties,conductivity,and structure.The results show that the prepared films contain poly-imide characteristic peaks,and the intensity of the characteristic peak increases with the increase of PEG400DA content.When the PEG400DA content is 4 wt%,the thermal stability is optimal,and the initial weight loss temperature is 343.12℃.As the content of PEG400DA increases,the hydrophilicity gradually decreases.The tensile strength increases with the increase of PEG400DA content,but the elongation at break reaches its highest value at 17.73%when the PEG400DA content is 6 wt%.As the electric field intensity increases,the content of PEG400DA increases,and the conductivity current increases.When the mass fraction of PEG400DA is 8 wt%,the conductivity is too strong and it loses its practical value.Overall,when the mass fraction of photosensitizer is 6%,the performance of PSPI film is optimal.
关键词
聚酰亚胺/光敏活性剂/热稳定性/拉伸性能/亲水性/电导电流Key words
polyimide/photosensitizer/thermal stability/tensile property/hydrophilicity/conductivity current引用本文复制引用
基金项目
国家级大学生创新创业训练计划(2023)(202310720006)
出版年
2024
NETL
NSTL
万方数据