德国毕克表面助剂 (2).ppt
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1、Jakarta, JWA + BYK Seminar, 22.04.2009, Peter van Dam,Surface Additives 表面助剂,Silicones and Acrylates 有机硅和丙烯酸酯, Page 2, Peter van Dam, BYK-Chemie, PGM Surface Additives,Topics,Surface tension theory 表面张力理论 Silicones to improve substrate wetting 有机硅促进底材润湿 Formation and prevention of craters 缩孔的形成和避免 D
2、efinition and improvement of flow and levelling 流动和流平的定义和流动和流平的定义的改进 Silicones to adjust surface slip 有机硅调整滑爽 Acrylic levelling additives 丙烯酸流平剂 Silicone surfactants 有机硅表面活性剂 Dynamic surface tension reduction 降低动态表面张力 Acrylated and OH-functional products 丙烯酸酯和羟基官能团产品 Silclean for easy to clean surfa
3、ces 表面易清洁产品, Page 3, Peter van Dam, BYK-Chemie, PGM Surface Additives,Molecules in liquids have a relatively high mobility 分子在液体中能相对的高速移动 Inbetween the molecules there are cohesive forces 分子间存在着内聚力 The higher these cohesive forces are, the higher the surface tension will be Water 73 mN/m = strong co
4、hesive forces hydrocarbons 23 mN/m = no cohesive forces,Surface tension 表面张力,内聚力越大,表面张力越高,水 强内聚力 烃 没有内聚力, Page 4, Peter van Dam, BYK-Chemie, PGM Surface Additives,Surface tension 表面张力, Page 5, Peter van Dam, BYK-Chemie, PGM Surface Additives,Objectives when formulating coatings* 涂料配方的目标,excellent fl
5、ow and levelling 优异的流动性和流平性 sufficient substrate wetting 充分的底材润湿 no crater 没有缩孔 are directly related to the surface tension of this coating 直接关系到该涂料的表面张力 organic modified silicones and acrylates influence the surface tension in such a way to improve these properties 有机改性有机硅和丙烯酸酯通过影响表面张力改善以上特性。, Page
6、 6, Peter van Dam, BYK-Chemie, PGM Surface Additives,Polydimethylsiloxane 聚二甲基硅氧烷,(CH3)3 Si O Si O Si (CH3)3,CH3,CH3,x,Hammertone 锤纹,Flow 流动,Surface slip 表面滑爽,Defoaming 消泡,x,2 - 27,45 - 230,380 - 1500,1800 - 2900,Compatible 相容,Incompatible 不相容, Page 7, Peter van Dam, BYK-Chemie, PGM Surface Additive
7、s,(CH3)3 Si O Si O Si O Si (CH3)3,CH3,CH3,y,x,Alkyl,mN/m,CH3,CH2CH3,(CH2)9CH3,21,26,32,Organic modified siloxane 有机改性硅氧烷,Organic Modification,Alkyl, Polyether 聚醚 (EO / PO) Aralkyl 芳烷基 Polyester 聚酯 reactive 反应型 - Acrylic 丙烯酸 - COOH 羧酸 - OH 羟基,芳烷基,有机改性, Page 8, Peter van Dam, BYK-Chemie, PGM Surface A
8、dditives,Substrate wetting* 底材润湿,Good substrate wetting: 良好的底材润湿: paint substrate,no additive 不含助剂,0,1% BYK-333,涂料 底材, Page 9, Peter van Dam, BYK-Chemie, PGM Surface Additives,Measuring surface tension of liquids using the Du-Nouy ringmethod (static) 使用提环法测量液体的静态表面张力, Page 10, Peter van Dam, BYK-Che
9、mie, PGM Surface Additives,CMC (critical micelle concentration) in solutions containing surfactants 溶液中含表面活性剂的临界胶束浓度,10000, Page 11, Peter van Dam, BYK-Chemie, PGM Surface Additives,mN/m,Additive dosage 助剂添加量,0,05,0,1,Substrate wetting* 底材润湿, Page 12, Peter van Dam, BYK-Chemie, PGM Surface Additives
10、,Volume to Surface Area* 从体积到表面积,50 m,10 m,V(olume),A(rea), Page 13, Peter van Dam, BYK-Chemie, PGM Surface Additives,Reduction of surface tension with organic modified siloxanes 有改性有机硅氧烷降低表面张力,Dosage 添加量,mN/m,BYK-300,BYK-320,BYK-331,30,29,28,27,26,25,BYK-310,BYK-333,Flow/Levelling,Substrate wetting
11、/ Anti Cratering,流动 流平,底材润湿 抗缩孔, Page 14, Peter van Dam, BYK-Chemie, PGM Surface Additives,Orientation of organic modified siloxanes 有机改性硅氧烷定向,Substrate 底材,Paint 油漆, Page 15, Peter van Dam, BYK-Chemie, PGM Surface Additives,Typical surface tensions* 各物质的表面张力,white spirit 白电油,Melamine resin 氨基树脂,80 7
12、0 60 50 40 30 20,Phosphatized steel 磷化钢材,Water 水,Alkyd resin 醇酸树脂,Acrylate 丙烯酸酯,SMC-Polyester 聚酯,mN/m,Solvents 溶剂,Resins 树脂,Subtrates 底材,water-borne 水性,Xylene 二甲苯,Untreated steel 无处理钢材,Polypropylene 聚丙烯, Page 16, Peter van Dam, BYK-Chemie, PGM Surface Additives,Substrate wetting and interfaces durin
13、g coating application 涂料施工中的底材润湿和界面状况, Page 17, Peter van Dam, BYK-Chemie, PGM Surface Additives,Contact Angle Measurement (KRSS) 接触角度测量, Page 18, Peter van Dam, BYK-Chemie, PGM Surface Additives,Contact angle measurement (sessile drop) 接触角度测量(座滴法),Substrate 底材,Contact angles of liquids 液体的接触角,45,90
14、,0, Page 19, Peter van Dam, BYK-Chemie, PGM Surface Additives,Measuring the surface tension of solids 固体的表面张力测试,Sessile drop method:座滴法: Measuring the contact angle of five different liquids with known surface tension and polarities: 用五种已知表面张力和极性的液体测量它们的接触角: - Water 水(72.5810-3) - Glycerine 甘油(63.31
15、0-3) - Ethylene glycol 乙二醇(46.4910-3) - Octanol 辛醇(26.0610-3) - Dodecan正十二烷 (25.4410-3) By regression analysis calculate the surface tension of the substrate/dry paint 通过回归分析计算底材和干膜的表面张力, Page 20, Peter van Dam, BYK-Chemie, PGM Surface Additives,Crater (contamination from outside) 缩孔(受外因影响),Particle
16、/粒子 Droplet/液滴 Dirt 污垢 (28 mN),Paint 油漆(30 mN),Substrate 底材 32 mN,Causes for and overcoming of surface defects 表面缺陷的原因和解决办法,Surface EffectsQ 表面效果, Page 21, Peter van Dam, BYK-Chemie, PGM Surface Additives,Crater (contamination of the substrate) 缩孔(底材被污染),Droplet/Dirt 液滴/污垢 (28 mN),Paint 油漆(30 mN),Su
17、bstrate底材 32 mN, Page 22, Peter van Dam, BYK-Chemie, PGM Surface Additives,Crater formation 缩孔的形成,Paintdroplet into wet paint 涂料滴进湿膜中,left: same surface tension 左:相同表面张力,right: droplet with lower surface tension 右:液滴表面张力更低, Page 23, Peter van Dam, BYK-Chemie, PGM Surface Additives,Levelling: definit
18、ion 流平:定义,Levelling (smallest possible interface liquid/air),After application 施工后,After drying 干燥后,流平(尽可能小的气/液界面), Page 24, Peter van Dam, BYK-Chemie, PGM Surface Additives,Flow and Levelling 流动和流平,What influences flow and levelling? 影响流动和流平的因素? Rheology 触变性 Time 时间 Surface tension 表面张力 Bnard cells
19、 贝纳德漩涡 How to improve flow and levelling? 如何改善流动和流平? Deflocculating W+D-additives (rheology in pigmented systems) 解絮凝润湿分散剂(在颜料体系中触变) Solvents (drying time) 溶剂(干燥时间) Resins 树脂 Additives (Surface Tension) 助剂(表面张力), Page 25, Peter van Dam, BYK-Chemie, PGM Surface Additives,Adjusting flow and levelling
20、调节流动和流平,What improves levelling most: high or low surface tension? 如何改善流平?表面张力高还是低?, Page 26, Peter van Dam, BYK-Chemie, PGM Surface Additives,A sphere is the smallest surface area possible perfect flow and leveling 球体拥有最小的表面积 最优异的流动和流平,Adjustment of Flow and Levelling (continued) 调节流动和流平(续), Page 2
21、7, Peter van Dam, BYK-Chemie, PGM Surface Additives,Formation of Bnard cells 贝纳德漩涡的形成,Surface 表面,Cross Section 截面,lower surface tension 低表面张力,higher surface tension 高表面张力, Page 28, Peter van Dam, BYK-Chemie, PGM Surface Additives,Bnard Cells 贝纳德漩涡, Page 29, Peter van Dam, BYK-Chemie, PGM Surface Add
22、itives,Avoiding Bnard cells by adding silicones 通过加入有机硅避免贝纳德漩涡,Control 空白,0,2% BYK-306, Page 30, Peter van Dam, BYK-Chemie, PGM Surface Additives,Flow and Levelling* 流动和流平,after application 施工后,after drying 干燥后,levelling additive 流平剂, Page 31, Peter van Dam, BYK-Chemie, PGM Surface Additives,Levelli
23、ng depending on the additive dosage* 流平性取决于助剂添加量,High 高,Strong 强,Minor 弱,Low 低,Waviness 波长,Dosage 添加量,BYK-333,BYK-300,BYK-320, Page 32, Peter van Dam, BYK-Chemie, PGM Surface Additives,Silicones to improve levelling 有机硅改善流平,Dosage 用量,mN/m,BYK -320,BYK -300,BYK -331,BYK -310,30,29,28,27,26,25,BYK -30
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