POSS接枝含氟苯丙聚合物复合材料的制备与性能研究

发布时间：2018-05-22 18:06

  本文选题：OvPOSS + 接枝反应　； 参考：《化工新型材料》2017年05期

【摘要】：通过预乳化乳液聚合工艺,制得八乙烯基多面体低聚倍半硅氧烷(OvPOSS)接枝含氟苯丙聚合物(FPSA)复合材料(OvPOSS/FPSA)。透射电子显微镜(TEM)分析显示,含氟苯丙乳胶粒具有明显的核壳结构,且表面被POSS覆盖。动态光散射(DLS)结果发现,接枝反应使OvPOSS/FPSA复合乳胶粒的平均粒径为95nm比FPSA平均粒径88nm稍大。傅里叶红外光谱(FT-IR)证实了接枝反应的发生。考察了甲基丙烯酸十二氟庚酯(DFMA)和OvPOSS用量对复合涂层疏水性能的影响,结果发现,当DFMA用量为15.0%(wt,质量分数,下同),OvPOSS用量为1.0%时,OvPOSS/FPSA复合涂层的接触角高达102°,疏水性较好。热分析(TGA)结果显示,OvPOSS/FPSA复合涂层的起始分解温度达307℃,具有较好的热稳定性。
[Abstract]:An octavinyl polyhedron oligomeric oligosilane (OvPOSS) composite containing fluorobenzene propyl polymer (FPSA) was prepared by pre-emulsifying emulsion polymerization process. Transmission electron microscopy (TEM) analysis showed that the fluorinated styrene-propyl latex particles had obvious core-shell structure and the surface was covered by POSS. The results of dynamic light scattering (DLS) show that the average particle size of OvPOSS/FPSA latex particles is slightly larger than that of FPSA latex particles when the average particle size of 95nm is larger than that of FPSA particles. Fourier transform infrared spectroscopy (FTIR) confirmed the graft reaction. The effects of dodecyl heptyl methacrylate (DFMA) and OvPOSS content on hydrophobic properties of composite coatings were investigated. The results showed that the contact angle of OvPOSS / FPSA composite coatings was as high as 102 掳and the hydrophobicity was better when the content of DFMA was 15.0 wt, the mass fraction and the content of OvPOSS were 1.0. The thermal analysis results show that the initial decomposition temperature of OvPOSS / FPSA composite coating is 307 鈩，

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