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ЯГТУ Диспергирование №1

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Dependence of optical efficiency of chromatic pigments as superposition of
two functions
F = F0 exp (-kD) + ФDexp (-φD)
F0 – limited value of the Kubelka-Munk function
(for D→0)
k, Ф and φ – the factors with dimensional L-1
F ≈ F0 (kD + kD2/2) + ФD (1 - φD + φ2D2/2)
Influence of the particle size on coloring power some chromatic pigments
Influence of dispersivwness on change of cromaticity of some pigments
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Lead yellow
Lead lemon
Lead orange
Molybdate red
Chrome red
Iron-oxid red
Iron minium
Iron-oxid yellow
Cadmium red
Cadmium lemon
Prussian blue
Ultramarine
Cobalt blue
Factors of the equation F = F0 exp (-kD) + ФD exp (-φD) end the optimum
particles sizes of some chromatic pigments
Without coloured undertone
My = 100 log (100/y)
Contribution of the coloured undertone
dM = 100 (log Xn/X – log Zn/Z)
blue dM > 0
brown dM < 0
Кинетика процесса диспергирования
F = kt – kFt / F∞
Где F – функция Кубелки-Мунка
t – время процесса
k – константа скорости диспергирования
F∞ – функция Кубелки-Мунка для бесконечной длительности процесса
Particle sizes distribution of titanium dioxide dispersion in the polyester
solution
Dependence of the polyester solution viscosity on the mass fraction
Производительность, время и сопротивление диспергированию
G = Cpk (1 - α)/αF∞
G = Cp (1 - α)/αt0,5
t = αF∞/(1 - αk)
Grinding resistance (GR ≡ t0,5)
t0,5 = F∞/k
Cop = (k1C2 – k2C1)/2(k1 – k2)
Типичные зависимости ζ-потенциала от pH
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