Shanghai Daoqin Plastics Co., Ltd.

lubricating wet dispersant in coating material production in important property

in coating material paint production in, material uniform distribution important. use lubricating wet dispersant can has improvement material dispersion process, from improve/increase coating material overall property can. will discussion lubricating wet dispersant important property, material dispersion process and how to optimization this process.

1. is what need use lubricating wet dispersant?

in coating material production in, solid material in liquid versus material in uniform distribution is key/critical steps. if material abrasion process to optimization, can can 会导致 below/following defect:

• 絮凝: material pellets poly 集, formed relatively large pellets, effect/influence coating material uniform property.

• gloss reduce : coating material surface gloss degree decline.

• color 偏移: color non-uniform or 偏差.

• 贝 nano 德漩涡: liquid flow non-uniform, surface defects.

• 沉 drop : material in 底部, method uniform distribution.

in addition, coating material system flow features 也会受 to negative effect/influence, 如流挂 and can force decline.

2. material dispersion

颜 material usually dry powder 形式存 in, its is more material pellets formed poly 体. poly internal in gas and gas, pellets between versus function force relatively small, easy by dispersion equipment 克服. in dispersion process in, poly in machine force function lower 破裂, 理想情况 lower formed pellets. in this process in, can amount by coating material system, from formed relatively small pellets, it and resin solvent liquid has relatively large interface. however, material 会尝试恢复 to low can amount 状态, poly formed relatively large structure, 即絮凝, color strong/high degree reduce and property 质变化.

3. dispersion process

颜 material dispersion can separation is main/primary steps:

1. lubricating wet : material solvent liquid 取代附 poly in gas and gas, material solvent liquid lubricating wet material pellets, from solid / gas interface （颜 material /空 gas ）转变 is solid / liquid interface （颜 material /基 material solvent liquid ）. need formed this 一状态, material solvent liquid must to poly in 空间间隙 in. however, this process efficiency to more factors effect/influence, liquid versus surface force and 接触角.

2. dispersion : through machine can (撞击 force and force), material poly by bad, material 粒径随之 decrease small. this is true positive material poly dispersion process in, important is machine force must large can 打开附 poly 体, meanwhile, as used for poly machine force also must 持续足够 long time. （ its in this dispersant 并不起 function, tube/pipe its 名称叫 as “ dispersion ” additives. ）

3. stability : in this 一步, if poly by most large degree 打开, dispersion must maintain stability, anti 止不受 control 絮凝. lubricating wet dispersant can mono material pellets maintain 距离, stability this 状态, poly 集, from has 效 抑 made 絮凝.

4. lubricating wet additives

lubricating wet additives can accelerated material for material poly lubricating wet, its features 包括极 property and non property structure combined, can in interface upper function. lubricating wet additives selection can significantly effect/influence material lubricating wet efficiency, from improves coating material quality.

lubricating wet additives can is use reduce material and material solvent liquid between 接触角, from add fast liquid 体进入附 poly structure in speed degree material 质. this category of material features is it surface active property agent structure: property, hydrophilic water structure separation and non property, hydrophobic water structure separation combined in separation inner. due to this structure, this category of combined material is tool has interface active property, is 说, lubricating wet additives 会迁移 to material /基 material solvent liquid interface upper. from chemical structure 看, lubricating wet additives can separation is type and non type — according to its in property separation how to combined in separation in. non property separation carbon hydrogen is type structure.

5. dispersion additives

研 abrasion rear material need dispersion additives stability dispersion 状态, anti 止絮凝. is due to pellets between force 引起, is maintain system stability, must in pellets between generate force. dispersant can in material surface 吸附, formed versus large force, this make pellets between maintain 距离, reduce control 絮凝 倾 toward, improve/increase coating material gloss, color strong/high degree and transparent degree.

结论

lubricating wet dispersant in coating material production in 扮演 不 can or 缺 角 color. through optimization material lubricating wet, dispersion and stability process, can significantly improves coating material property can, anti 止絮凝 phenomenon. is achieve high quality coating material production, ensure has material 处于良 good understanding 絮凝状态 is important.