锑取代聚硅烷的电磁性能研究
Study on Electromagnetic Performance of Antimony-substituted
Polysilanes
摘要 锑取代聚硅烷(Antimony-substituted Polysilane, APS)的合成可通过PMS直接与SbCl3反应来实现,聚合物产率为75.2 ﹪,分子量约为1 600,能够在空气中稳定存在,其紫外吸收的最大波长为330 nm,本征电导率为10-8~10-7 S/cm。将其与碘掺杂,电导率可以达到10-5 S/cm以上。电磁性能研究表明,其介电常数在5.1~6.2之间,具有较高的电损耗;将其与树脂混合制备吸波涂层,厚度在0.35~0.41 mm之间,在频率为2~18 GHz范围内具有较宽的吸收,13 GHz处获得的最小反射率可以达到-6.9 dB。
关键词 聚硅烷;半导体性能;介电常数;吸波材料
Abstract The synthesis of Antimony-substituted Polysilanes(APS)can be realized directly
by the reaction of PMS with SbCl3.The yield of polymers is 75.2%.The molecular weight
is about 1600 and it is stable in air. The maximum wave length of UV absorption is
330nm, the eigen electric conductivity is in the range of 10-8~10-7 S/cm, after doping
with iodine the conductivity is above 10-5 S/cm and the dielectric constant is between
5.1 and 6.2. When APS is blended with resin to form a wave absorption coating (0.35~0.41mm thick), the wave can be absorbed in a wide frequency range(2 to 18 GHz)with
the minimum reflectance of -6.9 dB at 13 GHz.
Keywords polysilanes; semiconductor properties; dielectric constant; absorbing
materials