BYK涂料助剂介绍2017-10-27

29/06/97BYK-Chemie,Shanghai1BYK涂料助剂简介29/06/97BYK-Chemie,Shanghai2颜料润湿和分散助剂颜料润湿和分散的基本原理颜料润湿和分散助剂的分类29/06/97BYK-Chemie,Shanghai3颜料的聚集形态聚集体附聚体原始颗粒29/06/97BYK-Chemie,Shanghai4颜料的分散过程润湿分散稳定29/06/97BYK-Chemie,Shanghai5颜料的润湿速度WASHBURN公式3V=kgFlcosr/lhV-润湿速度k-常数gFl-液相表面张力-接触角r-颜料孔隙半径l-颜料孔隙长度h-液相粘度gFlcos-铺展压力29/06/97BYK-Chemie,Shanghai6颜料分散体的稳定原理同电荷相斥空间位阻29/06/97BYK-Chemie,Shanghai7颜料润湿分散剂的分类解絮凝型受控絮凝型29/06/97BYK-Chemie,Shanghai8解絮凝型颜料润湿分散剂低分子量聚合物型高分子量聚合物型接枝共聚物嵌段共聚物29/06/97BYK-Chemie,Shanghai9两类润湿分散剂的特性解絮凝型牛顿型流动流平性好光泽高着色力高透明性好/遮盖力强色相稳定主要用于面漆受控絮凝型触变型流动防流挂性好防颜料沉淀防浮色发花主要用于底漆或中间涂料29/06/97BYK-Chemie,Shanghai10BYK颜料润湿分散剂低分子量聚合物型(解絮凝型）Anti-Terra-UBykumenLactimonDisperbyk-103Disperbyk-108Disperbyk-115Disperbyk-130BYK-220SDisperbyk-110Disperbyk-111Disperbyk-18029/06/97BYK-Chemie,Shanghai11BYK颜料润湿分散剂高分子量聚合物型（解絮凝型）Disperbyk-160Disperbyk-161Disperbyk-162Disperbyk-163Disperbyk-164Disperbyk-166Disperbyk-167Disperbyk-170Disperbyk-174Disperbyk-18229/06/97BYK-Chemie,Shanghai12BYK颜料润湿分散剂受控絮凝型Anti-Terra-203Anti-Terra-204Anti-Terra-PBYK-P104BYK-P104SBYK-P105Disperbyk29/06/97BYK-Chemie,Shanghai13BYK颜料润湿分散剂--水性体系用乳液体系水溶性体系Anti-Terra-U80Anyi-Terra-206BYK-P104S/-P105BYK-151BYK-154/-155Lactimon-WSDisperbykDisperbyk-180Disperbyk-181Disperbyk-182Disperbyk-183/-185Disperbyk-184Disperbyk-19029/06/97BYK-Chemie,Shanghai14BYK颜料润湿分散剂高分子聚合物型，有电荷控制MW高低较高较低阴离子型阳离子型160166169170161162163/167164115174182/183/185110111180Disperbyk-极性17129/06/97BYK-Chemie,Shanghai15BYK颜料润湿分散剂低分子聚合物型，无电荷控制MW高低较高较低阴离子型阳离子型电中性型受控絮凝型弱控絮凝型DisperbykBYK-P-104(S)BykumenLactimonA.T.-204A.T.-203Dis.-130A.T.U/Dis.-101Dis.-107/-108极性29/06/97BYK-Chemie,Shanghai16BYK颜料润湿分散剂水性体系用MW高低极性较低阴离子型阳离子型较高Dis.-190Dis.184Dis.-180Dis.-181BYK-151BYK-154/-155DisperbykDis.-182/-183/-18529/06/97BYK-Chemie,Shanghai17流平和表面流动控制助剂流平和表面流动控制原理流平和表面流动控制助剂29/06/97BYK-Chemie,Shanghai18流平表面流动控制施工时施工时表干后表干后无表面流动控制剂有表面流动控制剂有流平剂无流平剂29/06/97BYK-Chemie,Shanghai19流平公式--表面张力是流平的驱动力a0/at=k.g.h.t/w.h34hata0wa0-初始波纹幅度at-流平后波纹幅度k-常数g-涂料表面张力h-涂膜厚度t-流平时间W-波纹波长h-涂料粘度29/06/97BYK-Chemie,Shanghai20BYK流平助剂丙烯酸酯聚合物类BYK-354BYK-355/-356BYK-358/-361BYK-380BYK-381BYK-390复合溶剂类Byketol-OKByketol-SByketol-WS29/06/97BYK-Chemie,Shanghai21BYK聚合物型流平剂MW高低极性较低较高BYK-354BYK-358/-361BYK-390BYK-355/-356BYK-381BYK-38029/06/97BYK-Chemie,Shanghai22聚合物型流平剂的用量用量%涂膜性能缩孔，橘皮最佳流平雾影增加光泽降低表面发粘重涂性差29/06/97BYK-Chemie,Shanghai23表面张力差异引起表面流动缩孔贝纳德窝29/06/97BYK-Chemie,Shanghai24底材润湿性-涂料应用的先决条件涂料表面张力大于底材表面张力--涂料失去润湿涂料表面张力小于底材表面张力--涂料润湿铺展29/06/97BYK-Chemie,Shanghai25有机硅助剂在涂料表面形成表面张力均匀的薄层消除表面张力差异防止贝纳德窝形成降低表面张力避免缩孔涂料表面张力低于尘粒表面张力29/06/97BYK-Chemie,Shanghai26聚二甲基硅氧烷CH3CH3CH3CH3-Si-O--Si-O--Si-CH3CH3CH3nCH3分子量较小时可以用于涂料降低表面张力并使涂膜表面滑爽，但易引起污染.分子量稍大时与涂料混容性差会使涂膜出现各种弊病.29/06/97BYK-Chemie,Shanghai27改性有机硅表面流动控制助剂CH3CH3CH3CH3CH3-Si-O--Si-O-Si-O--Si-CH3CH3CH3nR1R2R2:调整表面张力-CH3，烷基，芳烷基R1:改善与涂料的混容性聚醚调节极性聚酯耐热性好芳烷基耐热性好29/06/97BYK-Chemie,Shanghai28BYK表面流动控制助剂强烈降低表面张力中等降低表面张力较少降低表面张力BYK-306BYK-300BYK-320BYK-307BYK-301BYK-322BYK-310BYK-302BYK-323BYK-333BYK-331BYK-325BYK-341BYK-335BYK-344可用于水性体系29/06/97BYK-Chemie,Shanghai29BYK表面流动控制助剂有机硅表面活性剂官能基有机硅助剂BYK-345BYK-370BYK-346BYK-371BYK-348BYK-373BYK-375可用于水性体系29/06/97BYK-Chemie,Shanghai30BYK表面流动控制助剂降低表面张力的能力强弱极性高低373306333307330341344300320325331聚醚改性370310371323322BYK-聚酯改性芳烷基改性BYK表面流动控制助剂29/06/97BYK-Chemie,Shanghai3129/06/97BYK-Chemie,Shanghai32BYK改性有机硅表面助剂的作用均匀和降低表面张力防止贝纳德窝，减少桔皮，帮助流平防止复色漆发花帮助消光粉和铝粉定向排列提高防流挂性防止缩孔促进底材润湿增加表面滑爽性提供表面平滑防划伤性防粘连性增加硬度缩短表干时间29/06/97BYK-Chemie,Shanghai33涂料的表面张力高些好还是低些好？表面张力高低流平有利不利丰满度有利不利防缩孔不利有利底材润湿不利有利防贝纳德窝不利有利防鬼影有利不利重涂性有利不利消泡有利不利29/06/97BYK-Chemie,Shanghai34结论在满足底材润湿和控制表面流动的前提下,涂料的表面张力应尽可能地高!29/06/97BYK-Chemie,Shanghai35和流平有关的其它助剂颜料润湿和分散助剂解絮凝型受控絮凝型流变助剂消泡剂29/06/97BYK-Chemie,Shanghai36消泡剂消泡原理消泡剂的分类29/06/97BYK-Chemie,Shanghai37STOKES方程式V~r2h气泡越小上升速度越慢粘度越大气泡上升速度越慢V=气泡上升速度r=气泡半径h=介质粘度29/06/97BYK-Chemie,Shanghai38排液效应-纯液体自动消泡膜壁厚度约10纳米时泡沫破裂29/06/97BYK-Chemie,Shanghai39表面活性剂对气泡的稳定作用疏水基（非极性）亲水基(极性）29/06/97BYK-Chemie,Shanghai40静电斥力使气泡稳定++++++++++++++++液体流出++++++++++++++++气泡膜壁膜壁变薄斥力增大29/06/97BYK-Chemie,Shanghai41GIBBS弹性使气泡稳定拉伸气泡膜壁浓度减小，表面张力增大29/06/97BYK-Chemie,Shanghai42表面张力和气泡表面张力的作用使液体有保持最小表面积的趋势表面张力越大，这种趋势越大，气泡不易稳定表面张力越小，这种趋势越小，气泡较易稳定29/06/97BYK-Chemie,Shanghai43消泡剂和脱泡剂的作用场合气泡在表面消泡剂气泡在湿涂膜内脱泡剂涂料粘度小时涂料粘度大时29/06/97BYK-Chemie,Shanghai44消泡剂的作用机理消泡剂与体系有一定程度的不相容和不相溶性有正的进入系数和展布系数29/06/97BYK-Chemie,Shanghai45进入系数和展布系数进入系数E=gF+gint-gDgF=起泡介质的表面张力gint=界面张力gD=消泡剂的表面张力展布系数S=gF-gint-gD29/06/97BYK-Chemie,Shanghai46脱泡剂的作用机理29/06/97BYK-Chemie,Shanghai47聚二甲基硅氧烷(CH3)3SiOSiOSi(CH3)3CH3CH3x流平表面平滑消泡锤纹效果相容不相容X29/06/97BYK-Chemie,Shanghai48有机改性聚硅氧烷CH3R2CH3R1xy(CH3)3SiOSiOSiOSi(CH3)3zR1=聚醚R2=烷基29/06/97BYK-Chemie,Shanghai49有机硅消泡剂稳泡作用最佳点引起弊病稳泡性消泡性相容性好（可溶）相容性差（不溶）29/06/97BYK-Chemie,Shanghai50聚合物类消泡剂产生弊病起泡性消泡性相容性好（可溶）相容性差（不溶）最佳点29/06/97BYK-Chemie,Shanghai51溶剂型涂料用BYK消泡剂有机硅型聚合物型BYK-065BYK-051BYK-066BYK-052BYK-070BYK-053BYK-088BYK-055BYK-141BYK-057BYK-020BYK-A530BYK-080溶剂型涂料用BYK消泡剂29/06/97BYK-Chemie,Shanghai5229/06/97BYK-Chemie,Shanghai53有消泡性能的表面助剂有机硅型聚合物型BYK-075BYK-354B