节录：采取3种硅烷偶联剂双-[γ-(三乙氧基硅)丙基]四硫化物(Si69)、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)、乙基三甲氧基硅烷(11-100)对千里淀法白炭黑粉体进行有机湿法改性。借助傅里叶红外光谱、构兵角仪、纳米粒度及Zeta电位仪、扫描电镜等检测妙技对白炭黑改性前后的结构及性能进行表征，参议检会3种不同偶联剂对千里淀法白炭黑的疏水性及分辩性的影响。范畴标明:3种不同硅烷偶联剂王人已告捷接枝到白炭黑名义，其中Si69改性的白炭黑剩余羟基数与未改性白炭黑名义羟基数的比值最小，为34.23%;经偶联剂改性后的白炭黑，团员风物削弱，粒径漫衍变窄，分辩性获取改善调教 漫画，疏水性大小轮番为Si69-Si O_2>KH570-Si O_2>11-100-Si O_2;详尽对比3种偶联剂的改性后果，Si69的改性后果最佳。
勾引重要词：消光扫数；相对湿度；概率漫衍函数；KS 检修；L-矩忖度法
Abstract：Three different silane coupling agents bis [γ-(triethoxysilyl)propyl]tetrasulfide(Si69)， γ-methacryloxypropyl trimethoxy silane(KH570)， ethyltrimethoxysilane(11-100)were used to modify the precipitated silica powder by organic wet process. Then， the structure and property of silica of before and after modification were characterized by Fourier transform infrared spectroscopic， contact angle instrument， nanoparticle size， Zeta potentiometer， and scanning electron microscopy. The effects of three different coupling agents on hydrophobicity and dispersion of precipitated silica were studied. The results show that three different silane coupling agents are grafted successfully onto the surface of silica， the content of remaining hydroxyl of silica modified by Si69 reaches the minimum 34.23%. After the silica modified by the coupling agents， the reunion phenomenon reduces， the size distribution becomes narrow， the dispersity obtains obvious improvement. The hydrophobicity is in turn Si69-Si O_2>KH570-Si O_2>11-100-Si O_2. Through the comparison of modification effect， the modification effect of Si69 is the best in all products in this test.
Keywords: extinction efficiency；relative humidity；probability distribution function；KS test；L-moment estimation method调教 漫画