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The viscoelastic anticorrosion coating series includes viscoelastic anticorrosion tape, viscoelastic anticorrosion paste, and polymeric outer protective tape. They are suitable for the anticorrosion of irregular components such as pipeline valves, flanges and tees; the joint coating of pipelines in water networks and tunnels; the repair of anticorrosion coatings and joint coatings for in-service pipelines; and other special fields.
Viscoelastic coating is used to safeguard valves against corrosion. Typically, viscoelastic anticorrosive tape and viscoelastic anticorrosive paste are used together. The specific operation procedure is as follows:
| Item | Test method | Performance |
| color | Visual estimation | green |
| thickness | ISO21809-3 | ≥1.8mm |
| Glass transition temperature | ISO11357-2 | -20°C min |
| Crystallization temperature | ISO11357-3 | No evidence of crystallization |
| Holiday detection at 5KV/mm, max. 25KV | ISO21809-3 | No holiday |
| Drip resistance | ISO21809-3 | No dripping |
| Lap shear strength at 23°C | ISO21809-3 | 0.027 N/mm2 |
| Lap shear strength at 70°C | ISO21809-3 | 0.005N/mm2 |
| Impact resistance | EN12068 | 15 J |
| Indentation resistance | EN12068 | 0.6mm remaining |
| Self healing | ISO 21809-3 | <24 hours@23°C |
| Cathodic disbondment resistance at 23°C | ISO21809-3 | 0mm self healing <24 hours |
| Cathodic disbondment resistance at 70°C | ISO21809-3 | 0mm self healing <24 hours |
| Electrical resistance | EN12068 | >10^15 ohm/cm |
| Low temp. Flexibility @-30°C | EN12068 | No separation, tears or cracks |
