High anticorrosive performance black electrophoretic coating
Product Introduction
HLS-1701ELB/HLS-1701EG Black Cationic Epoxy Electrocoat for auto is
a new generation electrophoretic coating researched and developed
by HLS Paint (Shanghai) Co., Ltd.
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It represents modern technology of cathodic electrophoretic coating
that is environment-friendly with high property and low cost. Such
coating does not contain heavy metal like lead, tin, cadmium and
mercury etc. It is a two-component, water-dispersed
resin,meanwhile, it took in features of previous products, and can
adapt galvanized steel sheet perfectly, almost can be applied to
foundation coating of all metal, such as: cold and hot rolled steel
sheet, galvanized steel sheet, aluminum products, zinc-aluminum
alloy sheet and stainless steel sheet etc.
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This product features shown below:
The appearance of the coating is flat, delicate, smooth, uniform
high gloss.
| Good stability of bath can adaptable for a longer updating cycle. |
Ideal for high demand for salt spray industry, such as pipe trench,
auto chassis parts, castings.
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The main component Matrix resin:
1,polyurethane modified epoxy resin
2,Curing agent: totally enclosed multi-isocyanates
3,Additives: surface active agent, prevent shrinkage cavity agent
Product quality data :
| Project | Technical data | Test standard |
Resin
(HLS-1701ELB) | Black Paste (HLS-1701EG) |
| Appearance | —— | Milky white liquid | Black viscous liquid,no agglomeration | Visual |
| pH | 25℃ | 6.0±1.0 | —— | GB/T 9724 |
| Conductivity | 25℃, μs/cm | 1400±600 | —— | HG/T 3334 |
| Storage stability |
No stratified state, and there were no obvious difference compared
to before storage | In 5-35 ℃ temperature 1 year |
Note: pH, conductivity measurement in the resin/pure water = 1:1
dilution
Bath on site management project :
Good bath data and coating quality, from the strict parameters
management and maintenance of equipment, production line according
to its own reality time situation, can have different management
project and specifications, recommend the construction parameters
see the table below for reference:
| Classification | Project | Control Data | Testing frequency |
| New bath | Anolyte |
| Electrophoresis tank | Ratio | 1:6 | -- | |
| Ripening time | 24-48 | -- | |
| Solid ( 120 ℃ /1h ,% ) | 14±4 | -- | once a day |
| PH | 5.6-6.2 | 2.0-3.5 | once a day |
| Conductivity ( μs/cm ) | 1200±400 | 2000±1000 | once a day |
| P/B | 0.08-0.15 | once a week |
| L panel | Smooth horizontal plane and vertical plane without obvious
differences | once a week |
| Solvent content (%) | 0.5-1.2 | once a week |
| Liquid level Fall head (cm ) | 10-15 | once a day |
| ED voltage( V ) | 0-300 | once a day |
| Break voltage ( V ) | ≥320 | once a week |
| Bath temperature ( ℃ ) | 30-36 | once a day |
| ED time( S ) | 60-180 | once a day |
| UF － 1 Tank | Solid content (%) | ≤2.0 | once a day |
| UF － 2 Tank | Solid content (%) | ≤0.8 | once a day |
| Baking furnace | Provisions furnace temperature( ℃ ) | 170-190 | once a day |
| Curing conditions | Drying temperature |
(165-185)℃×(20-30)min (With content holding time) | once a day |
Construction equipment :
Cathodic electrophoretic coating construction in the
electrophoresis tank, so need to have the following equipment:
Electrophoresis tank
Circulation devices (including filter, fill the paint device)
DI water equipment
DC power supply and the power supply unit
Anode box (tube) and circulation device
Ultrafiltration device
Cleaning devices
Heat exchanging equipment
Curing device
