【正文】 lar) ? = ?D (色散力 ) + ?P (極性力 ) Interaction between liquid and solid depends on the polarities of both 液體和固體間的相互作用取決于兩者的極性 , Page 82, Peter van Dam, BYKChemie, PGM Surface Additives BYKSILCLEAN 3720: Impact on Surface Tension 表面張力的影響 Sample 樣品 Surface tension 表面張力 Disperse portion 色散力 Polar portion 極性力 No additive 空白 26,6 21,8 4,8 4%* BYKSILCLEAN 3720 22,5 22,3 0,2 ?as supplied on total formulation 基于總配方 System: Waterborne Acrylate / Isocyanate pigmented 體系：水性丙烯酸酯 /異氰酸酯色漆 Determination of surface tension of cured coating with Kr252。C Influence of baking temperature 烘烤溫度的影響 , Page 39, Peter van Dam, BYKChemie, PGM Surface Additives Thermostable Polysiloxanes 耐熱性聚硅氧烷 (CH3)3 Si O Si O Si O Si (CH3)3 CH3 CH3 y x Polyester or Aralkyl Alkyl 聚酯或芳烷基 芳烷基 , Page 40, Peter van Dam, BYKChemie, PGM Surface Additives Thermostability of Polysiloxanes 熱穩(wěn)定性的硅氧烷 % weight 重量 (Polyether) (Aralkyl) (Polyester) 0 20 40 60 80 100 130 176。 300 BYK174。 90176。m 10 181。 90176。nard cells 貝納德漩渦 How to improve flow and levelling? 如何改善流動(dòng)和流平？ ? Deflocculating W+Dadditives (rheology in pigmented systems) 解絮凝潤(rùn)濕分散劑（在顏料體系中觸變） ? Solvents (drying time) 溶劑（干燥時(shí)間） ? Resins 樹(shù)脂 ? Additives (Surface Tension) 助劑（表面張力） , Page 25, Peter van Dam, BYKChemie, PGM Surface Additives Adjusting flow and levelling 調(diào)節(jié)流動(dòng)和流平 What improves levelling most: high or low surface tension? 如何改善流平？表面張力高還是低？ Surface tension = 484 mN/m 表面張力 ＝ 484 mN/m higher surface tension = better levelling! 更高的表面張力＝更好的流平！ Smallest surface area = excellent levelling 最小的表面積 ＝ 最好的流平 Mercury 水銀 , Page 26, Peter van Dam, BYKChemie, PGM Surface Additives 25 mN/m F 35 mN/m F A sphere is the smallest surface area possible ?perfect flow and leveling 球體擁有最小的表面積 ?最優(yōu)異的流動(dòng)和流平 Adjustment of Flow and Levelling (continued) 調(diào)節(jié)流動(dòng)和流平 （續(xù)） , Page 27, Peter van Dam, BYKChemie, PGM Surface Additives Formation of B233。 306/333 , Page 33, Peter van Dam, BYKChemie, PGM Surface Additives Substrate Wetting And Flow 底材潤(rùn)濕和流動(dòng) Substrate底材 : Surface tension表面張力 30 mN/m System體系 1: Surface tension表面張力 33 mN/m System體系 3: Surface tension表面張力 25 mN/m System體系 2: Surface tension表面張力 29 mN/m System體系 1: No substrate wetting無(wú)底材潤(rùn)濕 ? Poor flow 流動(dòng)性差 Action: Reduce surface tension, then adjust flow and leveling with less active silicones or Acrylates 方法：降低表面張力，用低活性有 機(jī)硅或丙烯酸酯 System體系 2: Good substrate wetting 良好的底材潤(rùn)濕 Action: If needed, adjust flow and leveling With less active silicones or Acrylates 方法：如果需要，用低活性有機(jī)硅 或丙烯酸酯改善流動(dòng)和流平 System 體系 3: Good substrate wetting ? Poor flow and leveling 太好的底材潤(rùn)濕，流動(dòng)和流平差 Action: Increase surface tension by reducing the amount of active silicones, then adjust flow and leveling 方法：減少活性有機(jī)硅用量從而 增加表面張力，改善流動(dòng)和流平 , Page 34, Peter van Dam, BYKChemie, PGM Surface Additives Measuring coefficient of friction (surface slip) 測(cè)量摩擦系數(shù)（表面滑爽度） force sensor 力傳感器 FN = m ? g F F = COF ? FN COF = coefficient of friction 摩擦系數(shù) m = mass of the weight 砝碼重量 g = acceleration of gravity 重力加速度 , Page 35, Peter van Dam, BYKChemie, PGM Surface Additives Surface slip 表面增滑 higher content of dimethylgroups = higher surface slip (lower COF) 更高含量的二甲基團(tuán) = 表面更滑（更低的摩擦系數(shù)） , Page 36, Peter van Dam, BYKChemie, PGM Surface Additives Improving surface slip with siliconesQ 使用有機(jī)硅表面增滑 Dosage 添加量 Slip 滑爽度 BYK320 BYK331 BYK310 BYK300 BYK333 Levelling 流平 Substrate wetting 底材潤(rùn)濕 Low 低 Low 低 High 高 High 高 , Page 37, Peter van Dam, BYKChemie, PGM Surface Additives Mobility of Silicones 有機(jī)硅遷移 150176。C 230 176。 , Page 89, Peter van Dam, BYKChemie, PGM Surface Additives ANTITERRA174。, BYKOPLAST174。 are registered trademarks of BYKChemie. AQUACER174。 and MINERPOL174。, CERAFAK174。, LACTIMON174。, BYK174。 , Page 72, Peter van Dam, BYKChemie, PGM Surface Additives BYK anic modified silicones for UV systems BYK 為 UV體系開(kāi)發(fā)的改性有機(jī)硅 Polymeric anic modified siloxanes:聚合物有機(jī)改性硅氧烷： BYKUV 3500 2x acrylic functional 兩倍丙烯酸官能團(tuán) BYKUV 3570 4x acrylic functional 四倍丙烯酸官能團(tuán) BYKUV 3510 none reactive 沒(méi)有反應(yīng)基團(tuán) BYK377 OHfunctional 羥基官能團(tuán) Silicon surfactant: 有機(jī)硅表面活性劑 BYKUV3530 1x acrylic functional 一倍丙烯酸官能團(tuán) , Page 73, Peter van Dam, BYKChemie, PGM Surface Additives Chemical structures 化學(xué)結(jié)構(gòu) Si O CH3 CH3 Si O CH3 CH3 Si C CH3 CH3 C X C=C C=C BYKUV3500 Si O CH3 CH3 Si O CH3 (CH3)3Si Si O CH3 CH3 O Si(CH3)3 X Y CH3 BYKUV3510 Si O CH3 CH3 Si O CH3 (CH3)3Si Si O CH3 CH3 O Si(CH3)3 X Y OH BYK377 “ cold stable” 冷穩(wěn)定 , Page 74, Peter van Dam, BYKChemie, PGM Surface Additives Chemical structures 化學(xué)結(jié)構(gòu) BYKUV3570 BYKUV3530 Si O CH3 CH3 Si O CH3 CH3 Si C CH3 CH3 C X C=C C=C C=C C=C Si O CH3 (CH3)3Si O Si(CH3)3 C=C , Page 75, Peter van Dam, BYKChemie, PGM Surface Additives Surface slip in solvent free UV systems 溶劑型體系用的表面增滑效果 Slip% 增滑 Dosage 添加量 0,1 0,2 0,3 0,4 100 80 60 40 20 0 0 BYKUV 3500 BYK333 BYKUV 3510/377 BYKUV 3570 BYKUV 3530 , Page 76, Peter van Dam, BYKChemie, PGM Surface Additives Tape Release 抗膠帶粘連性 0,2% BYKUV3510 , Page 77, Peter van Dam, BYKChemie, PGM Surface Additives Additives for UVcurable systems: propertiesQ UV固化體系用助劑：特性 solvent free UV 無(wú)溶劑