Зафиксированная дата: October 09 2012

Duration: 01 hours 00 minutes 48 seconds

This presentation will highlight the importance of 4 fundamental characterization parameters (size, shape, rheology, zeta potential) to the formulation and specification of coatings, paints, and pigments.
Table of contents
1. The importance of particle size, shape, and rheology in the paints, coatings, and pigments industries 
01:32
2. The importance of particle size, shape, and rheology in the paints, coatings, and pigments industries
00:55
3. Abstract
00:43
4. Outline
00:50
5. Opening quotation
00:51
6. Trends in the industry
01:45
7. General slide G G Sward & A E Jacobsen Chapter 3.4 “Particle Size Measurement” in Editor G G Sward “Paint Testing Manual: Physical and Chemical Examination of Paints, Varnishes” 13th Edition ASTM (1972)
01:27
8. Particle Size – early web reference!
00:50
9. Particle Size – early web reference!
00:47
10. Particle Size – early web reference!
00:28
11. Titanium dioxide
01:33
12. Titanium dioxide
01:29
13. Scattering Efficiency vs Refractive Index
00:53
14. Weber
00:25
15. Weber – extract formula
00:32
16. Optimum size (Weber) Calculations for RI and l
01:20
17. Hans H Weber and Gustav Mie
00:12
18. Scattering Coefficient – 1960 “TiO2 in linseed oil” (but the latter has an RI of ~ 1.48!) 2.73/1.795 ~ 1.52 Loney used 2.71/1.51 (page 14 of reference)
01:20
19. Ferranti Pegasus
00:51
20. Pegasus 2
00:29
21. Philip Laven’s MiePlot – Freeware… http://www.philiplaven.com/mieplot.htm
00:32
22. Philip Laven’s MiePlot (using v 4.001) Up to 200mm
00:26
23. Compare with Loney (1960) Needs adjustment of scales
00:23
24. Fraunhofer approximation Scattering/Extinction Coefficient (K)
00:40
25. What does the scattering coefficient mean in practice?
00:55
26. Titanium dioxide Hiding power - due to scattering
00:26
27. Transparent TiO2?
00:49
28. Transparent TiO2?
00:19
29. Imaginary component - what’s probably correct? Depends on the type and coating For this material, then pitching around 0.1 – multiple scattering
00:33
30. 0 and 1 imaginary Smoother plot and reduces the maximum
00:51
31. TiO2 regarded as unsuited for size measurement… Henry Green “A photomicrographic method for the determination of particle size of paint and rubber pigments” J. Franklin Institute 637-66 (November 1921)
00:55
32. Particle Shape
00:49
33. Early literature reference
00:40
34. Rose (pages 18 and 19)
00:50
35. TiO2
01:04
36. Metal flakes/bronzes
01:19
37. Don’t think that this alignment is easy…
00:57
38. Aluminum flake Breda and Lutz catalog
00:27
39. http://www.emd-performance-materials.com/en/plastics/know_how/know_how.html
00:31
40. KemFx KonFusion KF-04 Chameleon paint http://www.youtube.com/watch?v=tEq5p_feo7E
00:46
41. Zeta Potential
01:46
42. Reference
01:54
43. TiO2- High concentration measurements
01:15
44. Lambourne page 262
01:27
45. Indications that there is a stability issue
00:39
46. Stability studies with Zeta3000HS plus titrator
01:44
47. Stability studies with Zeta3000HS plus titrator
00:46
48. Measurement with optimum conditions
00:20
49. Measurement with optimum conditions
00:30
50. Rheology
01:07
51. Untitled
00:50
52. Patton - 1968
00:39
53. Richard R Eley
00:45
54. Coating
01:16
55. Transfer from container to applicator
01:08
56. Film formation
00:29
57. Flow-out of paint film
01:26
58. Flow-out of paint film
00:50
59. Shear rates of different processes
00:52
60. Links between the properties
01:32
61. Application examples Yield point from stress ramp
00:31
62. Application examples Yield stress and yield point from strain sweep
00:46
63. References
00:32
64. Contact Information
04:20