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1、DISPEX 帝派斯A FAMILY OF ANIONIC DISPERSING AGENTS FOR WATERBASED SYSTEMS水 性 体 系 阴 离 子 分 散 剂 系 列,VISCALEX 微乐斯 & RHEOVIS 瑞乐斯THICKENERS AND RHEOLOGY MODIFIERS FOR WATER BASED SYSTEMS水 性 体 系 增 稠 及 流 变 改 性 剂,DISPEX帝派斯A FAMILY OF ANIONIC DISPERSINGAGENTS FOR WATERBASEDSYSTEMS水性体系阴离子分散剂系列Mr. Chris WalkerHead
2、 Decorative Coatings Technical ServiceSegment Coating EffectsCiba Specialty Chemicals汽巴精化全球技术经理:Chris Walker先生,DISPEX PRODUCT RANGE DISPEX产品系列,R50 : Polycarboxylic acid. 聚丙烯酸 A40 : Ammonium polycarboxylic acid. 聚丙烯酸氨盐 N40 : Sodium polycarboxylic acid. 聚丙烯酸钠盐 N100 : Sodium polycarboxylic acid. 聚丙烯酸钠盐
3、 GA40 : Ammonium polycarboxylic acid/ Carboxylic ester. 聚丙烯酸氨盐/羧酸脂 G40 : Sodium polycarboxylic acid/ Carboxylic ester. 聚丙烯酸钠盐/羧酸脂 HDN : Sodium polycarboxylic acid/ Carboxylic ester. 聚丙烯酸酸钠盐/羧酸脂,TYPICAL PROPERTIES OF DISPEX DISPERSINGAGENTS DISPEX分散剂的基本特性, Dispex dispersing agents are low molecular w
4、eight solution polymers with a molecular weight range of 3500 20000 Dispex分散剂是低分子量的可溶性聚合物,其分子量分布为350020000 Polymer composition range is 100% Carboxylic acids to 70% Carboxylic acids with Carboxylic esters to decrease the solubility of the dispersant in water 聚合物组成中羧酸为100%到70%.其余为羧酸脂用以降低可溶性. pH of th
5、e dispersing agents are typically pH 8.0 分散剂的PH值一般为8.0 Dispex R50 is supplied at pH 3 Dispex R50的PH值是3 The appearance of the dispersing agents are clear yellow liquids 分散剂是清澈的黄色液体 Dispex N100 is supplied in bead form Dispex N100 是粒状固体,TYPICAL PROPERTIES OF DISPEX DISPERSINGAGENTS DISPEX分散剂的基本特性,THE
6、STABILISATION MECHANISM OF INORGANIC POWDERS USING ANIONIC DISPERSANTS阴离子分散剂的分散机理,聚合物链,钠盐,离子化,颜料颗粒吸引负电荷,聚合物链,吸引,中和,颜料颗粒的正电荷,DETERMINING THE ADDITION LEVEL OF A DISPERSANT FOR INORGANIC POWDERS无机颜料分散剂用量评估, The correct dosage level is found by incremental additions of the dispersant to a powder slurry
7、. The slurry is efficiently mixed after each addition and the viscosity is measured, using for example a Brookfield RVT viscometer. 准确用量的确定:向颜料浆逐渐增加分散剂,每次加入后充分搅拌.并测量浆料粘度(Brookfield RVT粘度计) Viscosity vs. % dry dispersant/dry pigment is plotted. The viscosity minima is the “Optimum Viscosity”, the dis
8、persant dosage level at this viscosity is the called “Optimum Dosage”. 粘度和分散剂干重/干粉重量比是有关的.粘度达到最低的”理想粘度”,时此时分散剂的添加量就是”理想用量” Typical dosage levels of Dispex grades are 0.05-0.5% dry dispersant/dry powder. 一般分散剂的添加量是0.050.5%分散剂(干重)/干粉重量比,DISPERSION OF A 78% SOLIDS CONTENT CALCIUM CARBONATE SLURRY. 78%固
9、含的碳酸钙浆的粘度/分散剂用量曲线,分散剂(干重)/干粉重量比,粘度,KRONOS 2190 (TiO2) 75% solids content 75%钛白浆粘度/分散剂用量曲线,粘度,分散剂(干重)/干粉重量比,Calcium carbonate 82% solids content 82%碳酸钙,分散剂干重/干粉重量比,粘度,EFFECT OF SYSTEM pH ON DISPERSION PERFORMANCE PH值对分散的影响,理想用量,粘度,Dispersant evaluation in a 40%PVCwaterbased emulsion paint system分散剂效力
10、的评估40%PVC的乳胶漆,Formulation details 配方,Dispersion of TiO2/Calcium Carbonate/Dolomiteblend at 75% solids content slurry75%的钛白/碳酸钙/白云石浆,分散剂(干重) /干粉重量比,Calculated addition levels 添加用量计算,Wet scrub resistance in a 40%PVC waterbased interior emulsion paint system 40%PVC内墙乳胶漆的抗擦洗性,60 Gloss in a 40%PVC waterb
11、ased emulsion paint system 40%PVC乳胶漆的60度光泽,40% PVC ANTI-CORROSIVE PAINT SYSTEM 40%PVC防腐漆配方,Component 组分 Level ( pbw ),DISPERSANTS DOSAGES REQUIRED FOR THEANTI-CORROSIVE PAINT PIGMENT SYSTEM防腐漆的分散剂用量,STABILITY RESULTS 稳定性, Dispex HDN recommended for reactive pigment systems !Dispex HDN推荐用于含有反应性颜料的体系!
12、,DISPERSANT/GLYCOL COMPATIBILITY METHODOLOGY 分散剂/二元醇的相容性,Glycol Compatibility 二元醇相容性Component 组分 p.b.w Glycols tested 二元醇测试Dispersant (20%solids) - 50g Ethylene 乙二醇 分散剂 (20%固含) Glycol 二元醇 - 50g Propylene 丙二醇TOTAL 合计 100g Butylene 丁二醇 Hexylene 己二醇Methodology 检测方法Dispersant solution added to the glyco
13、l. 分散剂溶液添加到二元醇中The mixture is shaken vigorously for 3 minutes. 混合液摇动3分钟Dispersant stability is assessed after 10 minutes. 10分钟后测稳定性,COMPARATIVE GLYCOL COMPATIBILITY OFDISPERSING AGENTS 分散剂的二元醇相容性比较,Rating 注意1. Homogenous solution 纯溶液2. Phase separation 相位分离3. mixture is partially gelatinous 混合液部分凝胶,
14、DISPERSANT FOAMING PROPERTIESMETHODOLOGY 分散剂起泡性测试方法,Methodology 方法Pour 40 ml of dispersant solution (pre-diluted to 20% solidscontent) into a stoppered measuring cylinder (100ml).40毫升的分散剂溶液(冲淡到20%固含)倒入100毫升的量筒中Reciprocate the cylinder for 5 cycles.来回晃动量筒5次Volume of foam is measured after 10 seconds.
15、10秒后测泡沫的高度,DISPERSANT FOAMING PROPERTIESMETHODOLOGY 分散剂起泡性测试方法,Reasons for choosing a Homopolymer 选择均聚物型分散剂的好处,Dispex N40, Dispex A40, Dispex R50, Dispex N100 Advantages: 好处 Generally lower cost than copolymer product 比共聚物的成本低 Generally more efficient than copolymer product 比共聚物有效 Generally less foa
16、m 泡沫少 Best stabilisation for liquid system! 液体稳定性最好!,Reasons for choosing a copolymer 选择共聚物型分散剂的好处,Dispex G40, Dispex GA40, Dispex HDN Advantage: 好处 Better for Gloss ( better glycol compatiblity ) 光泽好(二元醇相容性好) Better water/scrub resistance ( more hydrophobic ) 耐水/擦洗性好(憎水性好) Better color acceptance (
17、 more tolerant to organic pigment colorants ) 颜料相溶性好 ( 特别是有机颜料 ) Best stability with reactive pigments ( Dispex HDN ) 最适合于反应性颜料 Best Dry film properties! 最好的干膜性能!,DISPEX帝派斯A FAMILY OF ANIONIC DISPERSINGAGENTS FOR WATERBASEDSYSTEMS水性体系阴离子分散剂系列Mr. Chris WalkerHead Decorative Coatings Technical ServiceSegment Coating EffectsCiba Specialty Chemicals汽巴精化全球技术经理:Chris Walker先生,
