由低模数水玻璃制备纳米白炭黑的分散剂筛选
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摘要
以低模数水玻璃为硅源,二氧化碳为沉淀剂,采用碳化法制备纳米白炭黑,以样品的粒度及分散性作为主要考察指标,筛选并确定了较适宜的复配分散剂EDTA-2Na/CTAC,所确定较优分散剂复配比例为EDTA-2Na∶CTAC=1. 0%∶1. 5%。所制备的样品为粒径10～30 nm,分散性良好的无定型纳米白炭黑。采用扫描电子显微镜(SEM)、X射线衍射(XRD)及傅里叶红外光谱(FTIR)对样品进行了表征,并对复配分散剂可能的作用机制进行了初步探讨。
Nano-silica was prepared by carbonization method using low-modulus water glass as the silicon source and carbon dioxide as the precipitant. Taking the particle size and dispersity of the samples as the selection index,EDTA-2 Na/CTAC was selected as the more suitable compound dispersant with the optimum ratio of EDTA-2 Na∶CTAC = 1. 0%∶1. 5%. The as-prepared amorphous nano-silica was well dispersed with average particle size of about 10-30 nm. The nano-silica samples were characterized by field emission scanning electron microscope (SEM),X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR),and the possible dispersion mechanism of the compound dispersant was discussed.
Nano-silica was prepared by carbonization method using low-modulus water glass as the silicon source and carbon dioxide as the precipitant. Taking the particle size and dispersity of the samples as the selection index,EDTA-2 Na/CTAC was selected as the more suitable compound dispersant with the optimum ratio of EDTA-2 Na∶CTAC = 1. 0%∶1. 5%. The as-prepared amorphous nano-silica was well dispersed with average particle size of about 10-30 nm. The nano-silica samples were characterized by field emission scanning electron microscope (SEM),X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR),and the possible dispersion mechanism of the compound dispersant was discussed.
引文
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[3]李凤生.超细粉体技术[M].北京:国防工业出版社,2000:5-6.
[4]韩静香,佘利娟,翟立新,等.化学沉淀法制备纳米二氧化硅[J].硅酸盐通报,2010,29(3):681-685.
[5]刘朋程,张旭东,何文,等.白炭黑制备、改性及应用研究[J].山东陶瓷,2009,32(6):19-21.
[6]王利华.纳米白炭黑的制备及性能表征[D].沈阳:沈阳理工大学,2014.
[7]张剑宇.沉淀法白炭黑的制备及应用研究[D].武汉:华中科技大学,2013.
[8]张秋.疏水型纳米白炭黑的制备及表征[D].太原:中北大学,2009.
[9]杨保俊,于少明,单承湘.蛇纹石综合利用新工艺[J].矿冶工程,2003,23(1):47-49.
[10]王雅静,魏蕾,李娟娟,等.膨润土制备白炭黑的工艺研究[J].矿产综合利用,2015(5):50-53.
[11]张德懿,冯辉霞,雒和明,等.利用废弃微硅粉制备纳米Si O2粉体[J].中国非金属矿工业导刊,2009(5):47-49.
[12]高志强.粉煤灰综合利用研究及工程设计[D].石家庄:河北科技大学,2017.
[13]方俊.粉煤灰渣湿法制备水玻璃和白炭黑工艺研究[D].淮南:安徽理工大学,2013.
[14]公旭中,郭占成.钢铁冶金尘渣利用新技术基础[M].北京:科学出版社,2017.
[15]王佳东,翟玉春,申晓毅.碱溶法提取粉煤灰中的氧化硅[J].轻金属,2008(12):23-25.
[16]Bi C,Zhang H M,Zhang Y,et al.Fabrication and investigation of Si O2supported sulfated zirconia/Nafion(R)self-humidifying membrane for proton exchange membrane fuel cell applications[J].Journal of Power Sources,2008,184(1):197-203.
[17]何晓婷.沉淀白炭黑表面改性及减湿行为的研究[D].合肥:合肥工业大学,2014.
[18]熊剑.沉淀白炭黑的生成机理[J].江西化工,2004(2):31-33.