聚丙烯纳米复合（PPNC）超短纤维表面疏水,利用2-甲基-2丙烯酰胺丙磺酸（AMPS）对其进行表面接枝。采用红外光谱（FT-IR）和扫描电镜（SEM）对超短纤维的改性效果进行表征,接触角测试研究改性超短纤维的润湿性。结果表明：接枝反应的优化条件为0.3%过氧化二异丙苯（DCP）,4.0%AMPS,反应时间7h,反应温度125℃。该接枝改性样品的动态接触角降低44.20%,亲水性显著提高,更易在液相体系中分散,可开拓PPNC超短纤维混合钻井液基浆进行储层保护的应用空间。
Polypropylene nanocomposite （PPNC） super short fiber has strong hydrophobicity. The grafting copolymerization of 2-acrylamido-2- methyl propane sulfonic acid （AMPS） onto PPNC short fiber was studied. Fourier transform infrared spectra（FT-IR）, scanning electron microscope （SEM） and contact angle measurements were used to characterize the modified fibers. The results show that the optimum re, action conditions are as follows： dicumyt peroxide （DCP） at 0.3%, AMPS at 4.0%, reaction time for 7 h and temperature at 125℃;. The dynamic contact angle test shows that the grafting-modified fibers poasess good hydrophilicity and dispersion in water phase, and their contact angle decreases by 44.20 %. This provides a PPNC fiber to be widely applied in the field of reservoir protection, mixed in drilling fluids.
参考文献
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