三单体共聚型含氟聚酰亚胺的研究  

The study of ternary-copolymer of fluorinated polyimides

作　　者：刘蓉[1] 周钰明[1] 何曼[1] 戴佳[1] 崔一平[2] 张彤[2] 

机构地区：[1]东南大学化学化工学院,江苏南京211189 [2]东南大学电子科学与工程学院,江苏南京210096

出　　处：《功能材料》2008年第8期1249-1252,共4页Journal of Functional Materials

基　　金：国家自然科学基金(50377005);教育部新世纪优秀人才支持计划资助项目(NCET-04-0482);部委资助项目(6906005001);江苏省六大才人高峰资助项目(06-A-033)

摘　　要：将二胺单体6FHP、二酐单体6FDA和双酚A二酐缩聚合成新型三单体共聚型含氟聚酰亚胺FA- PI。用红外光谱、凝胶色谱、差热热重仪、棱镜耦合仪、万能力学机等对FAPI的光学和力学等性能进行了表征。结果表明,三单体缩聚后得到的FAPI重均分子量M_w高达19743.2,分散度最低达到1.2735;共聚物具有高热稳定性,玻璃化转变温度高达234℃;在光通讯波段1550nm处的传输损耗最低达到0.316dB/cm;柔韧性好,断裂伸长率高达152.5%,机械强度高达127.980MPa。与二单体含氟聚酰亚胺FPI相比,FA- PI的热稳定性更高、力学性能显著提高,而传输损耗仍较低,综合性能优异。A ternary-copolymer FAPI was synthesized from 6FHP-6FDA-Bisphenol A dianhydride. The thermal and optical properties of FAPI were determined by FT-IR, GPC, DSC, Prism Coupler and omnipotent mechanic machine. Test results indicates that the Mw of FAPI reach to 19743.2, and the lowest dispersivity is 1. 2735; FAPI has high thermal stability, the highest transition temperature is 234℃ ; the lowest waveguide transmission loss at optical communication wavelength is 0. 316dB/cm; and the flexility of FAPI is very fine, the strain at break can reach to 152.5 %. Compared with two monomers FPI, FAPI has better thermal stability, mechanic properties and lower transmission loss. FAPI is distinguished by the comprehensive properties.

关 键 词：三元共聚 含氟聚酰亚胺 热稳定性 损耗 力学性能 

分 类 号：TQ050.4[化学工程]