Shanghai Daoqin Plastics Co., Ltd.

in coating material production formulation in, material selection 往往会 use types or multiple different material mixed combined to color color 效果. more material in coating material in mixed combined 时, must ensure it to separation lubricating wet and understanding 絮凝, maintain material uniform distribution. however, this type of mixed combined process non has 挑战, material can can 会因迁移 property or electrical 荷差异发生 separation 离, coating color non-uniform, generate color phenomenon. discussion polymer dispersant in coating material color issues in key/critical function, how to through use polymer dispersant balanced material property, 避免浮 color issues, ensure coating material color stability and uniform distribution.

浮 color formed and causes

浮 color main/primary causes is coating material in drying process in to flow effect/influence. solvent agent from coating lower 层迁移 to surface, rear 导致剩余 material density rise high, make solvent agent again lower 沉. in addition, belt/tape cooling also 会引发 surface force 变化, 进而导致涡流（贝 nano 德漩涡） in coating material in formed.

this make coating material material in mono in upper rise, in surface distribution rear mono 元 边缘 lower 沉. different material property relatively large, it in in methods different, can can 引起颜 material separation 离, most 终导致 coating material color 不均.

颜 material property and color issues

颜 material property is 导致浮 color main/primary causes 之一. in coating material drying process in, flow 会导致 coating material in material pellets different methods 迁移. certain material due to 粒径, surface features or hydrophilic water / hydrophobic water property different, its property can can relatively strong/high or relatively low. different material property relatively large 时, this material can can uniform distribution in coating film in, color 不一致.

受控絮凝 type dispersant and color control

is 避免颜 material separation 离 浮 color issues, must 改变颜 material property. methods 之一就 is use 受控絮, use 受控絮凝 type dispersant can will different material combined in 同一 絮凝体 in, strong/high made adjustment it 们 迁移 property, from achieve 共絮凝, solution material separation issues. however, this type of methods can can gloss decline and material use efficiency reduce, therefore in high quality coating material in can can suitable.

polymer dispersant key/critical function

polymer type lubricating wet dispersant is solution color issues provide types has solution/scheme. this dispersant through and material solvent liquid versus function, full understanding 絮凝颜 material pellets, through function make material pellets by 紧密包裹 in material system in, from reduce its property. this 样, make in has relatively small has machine material pellets and relatively large machine material lower, has material property balanced, color phenomenon can to has remove.

in non water property system in, material surface usually belt/tape has relatively low electrical 荷, this effect/influence its dispersion stability property. different material electrical 荷差异 can can coating material in material 发生絮凝, from 而引起 unstable. use polymer dispersant can balanced different material between electrical 荷, due to electrical 荷差异引起 颜 material unstable, improve/increase coating material stability property.

结论:

综 upper 述, polymer dispersant in solution color issues in 发挥 至关 important function. through adjustment material property and electrical 荷, it has 效避免 颜 material separation 离, ensure coating material color uniform property. this make polymer type lubricating wet dispersant formed is high quality coating material formulation in important additives, especially in high coating material product in, can ensure coating material stability property and color color property.