【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。更多还原

【Abstract】 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 transmis- sion 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.更多还原