Electrophoresis principle anodic film
Cathodic electrodeposition coating process using heterogeneous ion-exchange membrane is composed of styrene quaternary amine anion exchange resin polyethylene binder, by mixing the tab, by type of material reinforced with laminated. It contains enough fixed groups and ionic dissociation of ions in solution has some selective permeability and conductivity, which is now widely used in automobiles, household appliances, construction machinery, hardware industry coating line , can be imparted to the workpiece with a series of excellent coating properties.
Selection mechanism: cathodic electrodeposition coating process using heterogeneous ion exchange membrane has a strong alkaline active group R-N + (CH3) 3 constitute a positive electric field, the negatively charged ions are easy to inhale through.
Electrophoresis anodic film characteristics
Electrophoretic coating process is widely used in automobiles, household appliances, hardware and other industries coating line, can give excellent coating properties of the workpiece. I produced the film cathodic electrodeposition coating electrophoresis equipment used, and its excellent performance, the cathode coating process to meet production requirements:
1, has good chemical stability, resistance to oxidation and corrosion in general acid-base (non-strong acid), chemical resistant;
2, the membrane resistance can meet the requirements of electrophoretic coating;
3, large anions, organic root painted tank can move into the anode compartment through the membrane;
4, low salt diffusion coefficient, due to the blocking effect of the membrane, the anode generated H +, continued to spread to the coating slot compartment, in order to facilitate the control of pH change coating groove changes and bath composition, and reduce the loss of active ingredient;
5, high compressive strength, in order to facilitate use of the device;
6, water permeability is small, four meters of water pressure is less than the amount of water penetration 0.2ml / h · dm2,30 meters of water have obvious leakage;
7, the film is dry state to a wet state, small dimensional change.

Electrophoresis anodic film specifications
Variety: cathodic electrodeposition coating process using heterogeneous ion-exchange membrane (dark green)
Dimensions specifications are as follows:
Thickness
Thickness tolerances
Effective area
0.52mm
± 0.02mm (dry)
≥800mm × 1600mm
Electrophoresis anodic film performance
The main physical cathodic electrodeposition coating process using heterogeneous ion-exchange membrane and chemical properties comply with the following table:
Pilot project
Unit
Index
Membrane surface resistance
Ω.cm2 (0.1 N NaCl measured)
<50 <span = ""> (25 ℃)
Transference number
 
> 0.95
Select transmittance
%
≥90
Exchange capacity (dry)
mol / kg
≥1.8
Moisture
%
30 to 45
Water permeability
ml / h · cm2 · MPa
<0.01 <span = "">
Burst strength
MPa
> 0.6
Note: The table "moisture" moisture mesangial wet condition.
Electrophoresis anode membrane transport storage
1, cathodic electrodeposition coating process using heterogeneous ion-exchange membrane to corrugated cartons, each containing 10-40 Zhang, about 8-32 kilograms.
2, cathodic electrodeposition coating process using heterogeneous ion-exchange membrane should be stored in a clean, cool, dry, ventilated warehouse, during transport should not be the sun and rain and mechanical damage.
3, cathodic electrodeposition coating process using heterogeneous ion-exchange membrane storage is valid for two years. Expired need to re-test, qualified to be put into use.