BYK-消泡剂.pdf

文档介绍：: .
Defoamer
消 + + + +
+ + + +
>10 nm
Peter van Dam, BYK-Chemie, PGM Surface AdditivesFoam Stabilization by Surfactants
表面活性剂导致的稳泡
Peter van Dam, BYK-Chemie, PGM Surface AdditivesBubbles Rise to Surface*
气泡上升到表面
__r2
V ~ 
V = Velocity of rise 上升的速度
r = Bubble radius 气泡的半径
 = Viscosity of liquid 液体的粘度
Peter van Dam, BYK-Chemie, PGM Surface AdditivesDefoamers: mode of action
消泡剂的工作模式
Properties of a defoamer:
消泡剂的特性：

• Low Surface Tension 低表面张力

• Good spreading ability 优异的扩散能力


• Insoluble/Incompatible in the surrounding medium
围绕在液体中但不溶解，不相容

silicones, mineral oils and certain polymers fullfill these criterias
有机硅，矿物油和某些聚合物可以符合这些标准

Peter van Dam, BYK-Chemie, PGM Surface Additives : .
Defoamer
消泡剂

Public Seminar Public Seminar
Peter van Dam, PGM Surface Additives Peter van Dam, PGM Surface Additives : .
Defoamer
消泡剂

Public Seminar Public Seminar
Peter van Dam, PGM Surface Additives Peter van Dam, PGM Surface Additives : .