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本文讨论了分散剂的性质及其作用机理。分离了用作分散剂的萘磺酸甲醛缩合 物（ＮＡＮＳＦ），甲基萘磺酸甲醛缩合物（ＮＡＭＮＳＦ）的单一组分，测定了各组分水 溶液的表面张力，其降低表面张力的能力随分子量的增加而递减；ＮＡＮＳＦ和ＡＢＳ或 ＯＰ配，可使表面张力从６９ｍＮ／ｍ左右下降到４０ｍＮ／ｍ左右；也显著改善了对染料 的润湿能力，可使接触角从５８°下降到１２°左右；测定了ＮＡＮＳＦ各组分在活性炭和 ＴｉＯ２上的吸附，均属朗格缪吸附，推测ＮＡＮＳＦ分子在ＴｉＯ２上的吸附形态为平躺的 单分子吸附层；在活性炭上的吸附量随ＮＡＮＳＦ组分的分子量增加而递减，在ＴｉＯ２上则 随分子量的增加而递增。
This article discusses the nature of the dispersant and its mechanism of action. The separation of the naphthalene sulfonic acid formaldehyde condensate (NANSF), methylnaphthalene sulfonate formaldehyde condensate (NAMNSF) single component used as a dispersant, the surface tension of each component aqueous solution, its ability to reduce surface tension NANSF and ABS or OP can reduce the surface tension from about 69mN / m to about 40mN / m, and also significantly improve the wetting ability of the dye, which can reduce the contact angle from 58 ° to 12 °. The adsorption of NANSF on activated carbon and TiO2 was determined by Langmuir adsorption. The adsorption state of NANSF on TiO2 was assumed to be a flat monolayer. The adsorption capacity on NACF adsorbed on NANSF The molecular weight of the components increases and decreases, while increasing with the increase of molecular weight on TiO2.