PPO Edge Strip For Cathode Plates
PPO Edge Strip – Cathode Plate Protection & Insulation for Electrowinning Cells
The PPO Edge Strip (also known as cathode plate edge protector or edge sealing strip) is a critical component for protecting cathode plates in hydrometallurgical electrowinning systems. Made from Polyphenylene Oxide (PPO) , this strip fits tightly around the edges of cathode plates to provide electrical insulation, mechanical protection, and chemical resistance.
In copper, zinc, and other metal electrowinning processes, cathode plates are repeatedly immersed in hot, acidic electrolytes and subjected to mechanical stripping forces. PPO edge strips prevent edge damage, short circuits, and current leakage – extending the service life of your cathodes and reducing maintenance downtime.
Key Functions
|
Function |
Description |
|
Electrical insulation |
Prevents contact between cathode edges and anodes or cell structure |
|
Mechanical protection |
Absorbs impact during handling, stripping, and cell insertion |
|
Edge sealing |
Covers sharp edges, reducing risk of damage to adjacent components |
|
Corrosion barrier |
Shields cathode plate edges from acidic electrolyte attack |
Technical Specifications
|
Parameter |
Value |
|
Material |
PPO (Polyphenylene Oxide) |
|
Color |
Black, White, Brown |
|
Hardness (Shore D) |
75–80 |
|
Continuous operating temperature |
–30°C to +120°C |
|
Tensile strength |
≥ 70 MPa |
|
Elongation at break |
15–25% |
|
Dielectric strength |
≥ 20 kV/mm |
|
Acid resistance |
Excellent in H₂SO₄ (150–200 g/L) |
|
Oil/grease resistance |
Excellent |
|
Service life |
> 2 years under normal conditions |
How to Install and Remove?
Installation Guide
- Clean the cathode plate edge – Remove any debris or old strip residue.
- Cut the PPO strip to the required length (slightly shorter than perimeter for tight fit).
- Slide the strip onto the plate edge, starting from one corner.
- Press firmly along the entire length to ensure full engagement.
- Trim excess if necessary.
Advantages of PRS PPO Edge Strips
1. High Strength and Durability
PPO edge strips are strong and impact-resistant, making them ideal for environments where mechanical stress is common (cathode stripping, handling, cell cleaning). They also resist aging, meaning they last longer than rubber or PVC alternatives.
2. Flexible and Collision Resistant
The strips are flexible, allowing easy fitting around cathode plate edges, while offering excellent resistance to mechanical impacts and external collisions. They will not crack or break under normal operation.
3. Excellent Acid and Heat Resistance
These strips withstand acidic conditions (H₂SO₄ up to 200 g/L) and high temperatures (up to 120°C), which are common in hydrometallurgical electrowinning processes. This ensures cathode plates remain fully protected throughout the electrowinning cycle.
4. Oil and Solvent Resistance
PPO edge strips resist oils, lubricants, and organic solvents commonly used in tankhouse maintenance, preventing chemical swelling or degradation.
5. Superior Insulation and Secure Fit
The edge strips provide excellent dielectric insulation (≥20 kV/mm) and fit tightly around the cathode plate edges, ensuring a strong clamping force for better electrical isolation and mechanical retention.
6. Easy to Install and Maintain
PPO edge strips are lightweight and flexible. Installation requires no special tools – simply slide the strip onto the cathode plate edge. Removal is equally easy, reducing downtime during maintenance. Their service life exceeds 2 years under normal operating conditions.
FAQ
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