1.Mainline Coating Repair Products for Corrosion Protection of PE Coated Pipelines
2.PE repair patch
3.Hot melt adhesive stick
Mainline Coating Repair Products for Corrosion Protection of PE Coated Pipelines
System Description
The filler tapes are designed as an underlying filler materials prior to the application of coating systems.
PE repair patch
The product consists of an irradiated cross-linked polyolefin sheet coated with a heat activated adhesive and is designed specifically for sealing and protection of damaged pipeline coatings.
Advantages
-No special tools or equipment required
-Excellent abrasion resistance
-Inert to common acids,alkalis and solvents
-Barrier to moisture and corrosion
Hot melt adhesive stick
Hot melt adhesive stick is composed of heat-activated adhesive with a stick form.It is used for repairing a small damage on the pipeline. It could be used as a filler material with PE repair patch.
Advantages
-Flexible
-Excellent adhesion
-Flows into hard-to-reach location
-Excellent moisture resistance
Mastic filler
Mastic filler is used to fill larger voids and deep damaged coating prior to the application of PE repair patch.
Advantages
-Flexible under various field conditions
-Conformable and moldable
-Easy and simply application
-Compatible with various coating system
Physical Properties
PE repair patch | Test | Method | Value |
Tensile Strength of Backing | ASTM D638 | 22 MPa | |
Elongation at Break of Backing | ASTM D638 | 600% | |
Hardness, Shore D of Backing | ASTM D2240 | 52 | |
Dielectric Strength of Backing | ASTM D149 | 35kV/mm | |
Adhesive Water absorption | ASTM D570 | ≤0.05% | |
Adhesive softening point | ASTM E28 | 125°C | |
Adhesive Lap shear @23°C | ASTM D1002 | 196psi | |
Peel strength of PE repair patch | ASTM D1000 | 60N/cm | |
Impact resistance of PE repair patch | DIN30672 | 20J | |
Hot melt adhesive stick | Impact resistance | DIN30672 | 22J |
Dielectric Breakdown | ASTM D149 | 30kV/mm | |
Mastic filler | Elongation at Break | ASTM D638 | 600% |
Hardness, Shore D | ASTM D2240 | 40 | |
Low Temperature Flexibility | ASTM D2671 | -40°C | |
Maximum operating temperature | - | 85°C |
Product selection method
Selection Of Product | Max.Operating Temperature | Compatible Line Coating | Product |
Small damage or Scratch | 114°F(80°C) | PE,PP,FBE,CTE | Only Hot melt adhesive stick or with PE repair patch |
Damage | PE,PP,FBE,CTE | Hot melt adhesive stick with PE repair patch or Mastic filler with PE repair patch | |
Large damage | Heat shrinkable sleeve is recommended | ||
