Low dielectric polybenzoxazine nanocomposites (SBA-15/PBZ) containing mesoporous silica (SBA-15) were successfully synthesized, using benzoxazine functionalized SBA-15 (BZ/SBA-15) and benzoxazine monomer, through thermal ring opening polymerization. SBA-15 was functionalized with benzoxazine functional silane via grafting method. The benzoxazine functionality in BZ/SBA-15 was confirmed by FT-IR, 13C CPMAS, 29Si CPMAS NMR, XPS, TGA and nitrogen porosimetry analysis. By increasing the amount of BZ/SBA-15, the SBA-15/PBZ nanocomposites possess higher Tg and good thermal stability. 7.5 Wt % of BZ/SBA-15 reinforced polybenzoxazine nanocomposite possesses an ultra-low dielectric constant of 1.75 at 1 MHz.
利用苯并恶嗪功能化 SBA-15 (
BZ/SBA-15) 和苯并恶嗪单体,通过热开环聚合法成功合成了含有介孔
二氧化硅(SBA-15)的低介电常数聚苯并恶嗪纳米复合材料(SBA-15/P
BZ)。通过接枝法,SBA-15 被苯并恶嗪官能团
硅烷官能化。
BZ/SBA-15 中的苯并恶嗪官能团通过傅立叶变换红外光谱、13C C
PMAS、29Si C
PMAS NMR、XPS、TGA 和氮孔分析得到了证实。通过增加
BZ/SBA-15 的用量,SBA-15/P
BZ 纳米复合材料具有更高的 Tg 值和良好的热稳定性。7.5 Wt % 的
BZ/SBA-15 增强聚苯并恶嗪纳米复合材料在 1
MHz 频率下具有 1.75 的超低介电常数。