Shanghai Daoqin Plastics Co., Ltd.

dispersant is coating material in can less important formed separation, its use amount small can its advantages, more effect/influence it abrasion rear stability property, this main/primary is is degree dispersant can 进行充 separation tensile, dispersant in material surface solvent agent upper, a large amount of dispersant for coating film generate negative effect/influence. in 实际操 as process in, can according to 理论规则计算出 dispersant use amount, rear dispersant use amount for dispersion system viscosity, coating film gloss degree and color force effect/influence. dispersant use amount in 时, dispersion system viscosity has obvious most small value, coating film gloss and color force has most large value.

in coating material in, material large more is by made formed liquid use, material distribution 广泛, generally in 0.05μm至1 mm between. 而当颜 material in 0.05μm至0.50μm between 时, material tool has relatively good color force, gloss, cover/cap force and weather resistance. material manufacturing process in formed most small pellets is pellets, it mono or 一组粒径 non small 晶体存 in. 而原始 pellets between surface to surface combined formed block is poly 体, poly versus for 紧密, generally dispersion equipment very difficult will its dispersion formed pellets. pellets and poly through 范德华 force combined, formed relatively large material pellets block, is poly 体. poly pellets between 以点, 边, 角接触, pellets function force small, can dispersion formed pellets through machine force formed or material.

我们希望颜 material dispersion formed pellets liquid （理想情况 lower ）, or less is combined and pellets liquid. system trend is from high can toward low can 态恢复, therefore fine pellets distribution material easy poly formed 絮体. from structure upper 看, material and poly non versus 似, 但絮状 material in color is resin solvent liquid is gas, if 我们添 add dispersant retardant or decrease 缓絮凝 发生.

颜 material dispersion process lubricating wet, dispersion and stability separation formed. lubricating wet process in, material surface gas and water gas by resin solvent liquid 取代, solid / gas versus （颜 material /空 gas ）转化, or is solid / liquid versus （颜 material / resin solvent liquid ）转换. this dispersant, especially is low separation lubricating wet dispersant, can accelerated lubricating wet process, in dispersion process in, main/primary machine can function, material poly by formed more small pellets, uniform dispersion 状态, 第三步 is stability process, utilizing dispersant maintain material dispersion stability, anti 止絮凝 phenomenon 发生, according to in material surface adhesion agent types type and separation structure, make liquid obtain stability 状态, dispersant especially is polymer/macromolecule dispersant for material pellets stability property has important function.

dispersant in coating material production in non important function. dispersion system stability property can many coating material issues and film defect. formulation combined 理, add amount dispersant, can has reduce cost, improve/increase coating material property can. is make filler in coating material system in separation function, dispersant application and combined selection is necessary. in dispersion material front, must understanding material and dispersant structure, very more coating material technology or tube/pipe 理人员会认 is add dispersant increase cost, its 实不然. stability filler system can rear many issues, from comprehensive 结果 看, dispersant combined 理筛选 and add amount, can cost, large large improve/increase coating material property can.