Transcription of Pigments Webinar May 2012.ppt - Horiba
1 2012 Horiba , Ltd. All rights Characterization of PigmentsMark 2012 Horiba , Ltd. All rights Why is particle size important? Organic Pigments using laser diffraction Inorganic Pigments using laser diffraction Ink Pigments TiO2study using laser diffraction TiO2particle size and zeta potential using dynamic light scattering Conclusions 2012 Horiba , Ltd. All rights pigment is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption red and green absorbblue reflects 2012 Horiba , Ltd. All rights Dependent on Particle Size Hue/Tint Strength Hiding/Transparency Gloss/Flatting and Film Appearance Flocculation Viscosity Stability Weather resistanceGloss vs. % > 1 m 2012 Horiba , Ltd.
2 All rights Pigments Commonly powder form Dry milling procedures monitored by dry laser diffraction method Particle size effects dispersibility of pigment in application media Wet laser diffraction method to monitor dispersion of organic Pigments in low viscosity liquid media 2012 Horiba , Ltd. All rights Pigments StudySamples*: 2583 Diarylide Yellow 83 1274 Hansa Yellow 74 2574 Hansa Yellow 74 5576 Phthalo Blue 15:31. Select the small, high-dispersion nozzle for the fine particle sizes Set the automatic measurement conditions to proper testing range (96-94%T for the laser).3. Set dispersion air pressure to To prevent nozzle clogging, remove large agglomerates from sample using 1mm sieve 5. Load enough filtered sample onto feeder chute to perform multiple Take 3 consecutive measurements using the Auto Measurement function.
3 *Thank-you to Lansco Colors, Warwick, RI for supplying the samples for this study. 2012 Horiba , Ltd. All rights Hansa Yellow 74 Sample IDResultsRun % Organic Pigment Results2583 Diarylide Yellow 83 Sample IDResultsRun % Diarylide Yellow 831274 Hansa Yellow 74 2012 Horiba , Ltd. All rights Phthalo Blue 15:3 Sample IDResultsRun % Organic Pigment Results2574 Hansa Yellow 74 Sample IDResultsRun Hansa Yellow 745576 Phthalo Blue 15:3 2012 Horiba , Ltd. All rights : Iron Oxide, LA-950 Wet 2012 Horiba , Ltd. All rights : Chromium Oxide Green Micro 90 surfactant to wet powder sodium pyrophosphate 2012 Horiba , Ltd. All rights : Alumina Al2O3 2012 Horiba , Ltd. All rights Pigment 2012 Horiba , Ltd.
4 All rights Data Sheet 2012 Horiba , Ltd. All rights : Effect of (diameter) in mRelative scattering scattering powerrutile TiO2vs. sizeOpacity of TiO2mean and 10 m 2012 Horiba , Ltd. All rights Procedure Step 1: Buy a Horiba LA-950 Decide wet or dry analysis Wet: disperse sample using surfactant and ultrasound Method development using Method Expert RI, concentration, ultrasound Dry: Use smallest nozzle and highest air pressure 2012 Horiba , Ltd. All rights : Effect of Refractive IndexMeasure sample onceFix real RI, vary imaginaryMinimize R parameter (error calculation)Use for imaginary RI 2012 Horiba , Ltd. All rights Cosmetics% under 100 nm nanoparticles 2012 Horiba , Ltd.
5 All rights : Wet vs. DryWetDryOnly 8 nm difference!Dry dispersion below 350 nm median 2012 Horiba , Ltd. All rights : Dry Analysis of 2 SamplesAble to reproducibly distinguish2 samlpes with 12 nm difference@ D(v, ) 2012 Horiba , Ltd. All rights TiO2**Data from Horiba LB-500 2012 Horiba , Ltd. All rights & Zeta Potential on SZ-100 Size, note: Intensity distributionZeta potential @ pH = 7 2012 Horiba , Ltd. All rights Particle size important physical parameter requiring analysis for control Laser diffraction excellent tool down to 30 nm Dynamic light scattering for sub micron particle size + zeta potential Horiba has products and support for your application requirements 2012 Horiba , Ltd. All rights Learn More: news of updatesView application/technical notes (>130), webinars (>40), white to us, ask questions 2012 Horiba , Ltd.
6 All rights Большое спасибоGrazie ObrigadoTacka dig
