Main Features
● Best grade for replacement of Red Lead
● Color similar to Red Lead
● Suitable for all kinds of solvent based resin.
● Can replace up to 100% of Red Lead without changing the formulation.
Suggested Dosage
35% in the whole formula
Comparison Test Between WD-H-803 and Red Lead
1 )Testing Photos
2) Testing Formulas
| Items | Dosage | Items | Dosage | |
| Alkyd resin | 45 | Alkyd resin | 45 | |
| WD-H-803 | 35 | Film | red lead | 35 |
| barium sulfate | 5 | Thickness: | barium sulfate | 5 |
| talcum powder | 10 | 45mm | talcum powder | 10 |
| Bentonite | 0.5 | Bentonite | 0.5 | |
| Lead naphthenate | 1.5 | Lead naphthenate | 1.5 | |
| Cobalt naphthenate | 0.4 | Cobalt naphthenate | 0.4 | |
| Manganese naphthenate | 0.2 | Manganese naphthenate | 0.2 | |
| anti-skinning agent | 0.2 | anti-skinning agent | 0.2 | |
| thinner | 2.2 | thinner | 2.2 |
Testing Results and Suggestion
■ No blistering and rusting at all on both panels.
■ The performance are both well under the same condition on both salt spray test and salt water immerging test.
■ But as it is in Alkyd resin, the test in longer Salt spray time was bad on both of the panel.
■ WD-H-803 could totally replace red lead without changing formulation.
Technical Index Q/320292AAJR02-2007
| Items | Index | Testing Method | |
| Appearance | Orange powder | Eyeballing | |
| Silicate (SiO2) % | ≥ 9.0 | Appendix E | |
| Screen floating (400 mesh um) ％ | ≤ 1.0 | GB/T1715-1979(A) | |
| Density 27℃ g/cm3 | 3.2～4.0 | GB/T1713-89 | |
| Oil Absorption % | 10～18 | GB/T5211.15 | |
| Water soluble % | ≤ 1.0 | GB/T 5211.2 | |
| Volatile (105℃) | ≤ 1.0 | GB/T5211.3 | |
| PH Value of Water Suspension | 7.5～9.5 | GB/T1717-86 |
After surface treatment on granule of the powder, it enhances the binding power between the pigments and metal. On the other hand, because of the nanometer size of the powder, it enhances the cohesion of the film and low down the permeability. Finally it stops the hydrone and oxyen to corrade the surface of metal.