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羟乙基纤维素添加方式不同对乳胶漆体系产生影响的原因分析
来源:    发布时间: 2018-07-21 08:47   622 次浏览   大小:  16px  14px  12px

       

        羟乙基纤维素的增稠机理是其通过分子间的和分子内氢键的形成,以及水合作用和分子链的链缠绕,实现黏度的提高。因此,可以将羟乙基纤维素增稠方式分为两个方面:一是分子间和分子内氢键的作用,疏水主链与周围水分子通过氢键缔合,提高了聚合物本身的流体体积,减少了颗粒自由活动的空间,从而提高了体系黏度;二是通过分子链的缠绕搭接,使纤维素链在整个体系中呈一种立体的网络结构,从而实现黏度的提高。


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