摘要
以3,5-二氨基苯甲酸(35DABA)、4,4’-二氨基二苯醚(44ODA)和3,3,’4,4’-四甲酸联苯二酐(BPDA)为原料,在强极性非质子有机溶剂中进行聚合反应,制得了高粘度含羧基聚酰胺酸(CPAA)溶液,经涂膜、热亚胺化,得到了坚韧透明的含羧基聚酰亚胺(CPI)薄膜,并对其性能进行了研究。结果表明:CPI薄膜具有较高的表面能,在宽广的频率范围内,其电容、介质损耗基本保持不变,具有良好的高低频稳定性;薄膜的强度与韧性均较高,可应用于制作高性能柔性覆铜板;薄膜在紫外线短波长区具有良好的吸收能力,其截止波长为320 nm,在可见光波长范围内,其透过率达80%以上。
Using 3,5-diaminobenzoic acid（35DABA）,4,4＇-diaminodipehenyl ether（44ODA） and 3,3＇,4,4＇-tetracarboxylbiphenyl dianhydride（BPDA） as raw materials,a highly viscous polyamide acid with carboxyl group（CPAA） solution was prepared in aprotic organic solvents.A tensile and transparent polyimide film with carboxyl group（CPI） was prepared by thermal imidization of CPAA thin layer,and the properties of the film were studied.The results show that the CPI film has high surface energy and good stability under high and low frequency;the capacitance value and dielectric loss do not change in a broad range of frequency.With high strength and good toughness,the film can be used to prepare high performance flexible copper clad laminate.The film also has good absorptive capacity in the short wavelength region of ultraviolet;its cutoff wavelength is 320 nm.The transmittance attains more than 80% in the visible light region.
出处
《绝缘材料》
CAS
北大核心
2011年第5期1-4,共4页
Insulating Materials
基金
上海市博士后基金重点项目(09R21421000)
中央高校基本科研业务费专项资金资助(11D10514)
关键词
3
5-二氨基苯甲酸
含羧基聚酰亚胺
薄膜
制备
性能
3
5-diaminobenzoic acid
polyimide with carboxyl structure
film
preparation
properties
