1. NANOSILICATES AND POLYMER COMPOUNDS BASED ON THEM

2. Fully-Domestic Nanocomposite Material
Domestic Innovations Forming the Basis of Metalen PE-21 Single-Layer Coating
Fully-Domestic Nanocomposite Material
polyethylene with active functional groups
unique material for the needs of pipeline corrosion protection
active nano-sized fillers
Excelling the existing equivalents in:
Processability of pipe coating
Energy efficiency
Performance properties
Full conformance to the existing factory application layouts

3. Application Advantages
Polyethylene layer
Chromate
Adhesive
Existing three-layer coating layout:
4 components
Chromating needed
About 4000 μm total thickness
Steel pipe
Epoxy primer
PE-21 layer
Innovative Metalen-21 single-layer coating layout:
Only 2 components
No chromating
About 3000 μm total thickness

4. Application Advantages
Application results of Metalen PE-21 single-layer coating by large metallurgical plants in Russia: IPM CJSC, VSW OJSC, VPP OJSC, ChelPipe OJSC
Reduced coating thickness
Simpler process
Free adhesion-layer extruder
Simpler logistic and storehouse operations
Reduced incoming inspection by QCD
No coating defects on pipe end sections

5. Storage and Handling Advantages
Test
Metalen PE-21
Test Conditions
Charpy notched impact strength (kJ/m2)
53,2
23 °С, 2 J
(edge, notch type А)
Shore D hardness 61
GOST R 51164
Vicat softening point under load (°С)
123
4 mm press plate, ISO °С/h, 10 N
Penetration at 80 °С (mm)
0,17

6. Pipe Coating Temperature Type of the Tested Pair of Materials
Routing Advantages
Pipe Coating Temperature
Type of the Tested Pair of Materials
Metalen PE-21» + TIAL MGP
95 °C
171 N/cm
105 °C
186 N/cm
Adhesion strength between coating and coupling increased by 30 %
No additional pipe coupling face cleaning
Reduced epoxy primer consumption
Increased weld durability under coupling

7. Metalen PE-21 Specifications
Parameter
Value
Unit
Test Method
Compound density
0,949-0,960
g/cm3
GOST 15139
Melt flow rate
(190°/2,16 kg)
0,45±0,05
g/10 min
ISO 1133
Oxidation induction time at 200 °C
>90
min
ISO
Elongation (20±5 °C)
800±100 %
ASTMD638 (50 mm/min)
Tensile strength (20±5 °C)
25±1
MPa
Carbon black content ≥2
ASTM D 1603
Vicate softening temperature
123±2 °C
ISO 306 А-50
Brittleness temperature
<-70
ASTM D 746
Cracking resistance (10 % Igepal solution), F20
>5000
hour
ASTM D 1693-А
Penetration at 80±2 °C
0,17±0,02 mm
GOST R 51164

8. Metalen PE-21 Advantages
For pipe mills:
Higher coating speed, higher output
Facilitated use, reduced accompanying operations
For transport companies:
High resistance to mechanical effects
Reduced coating defects during handling
For storage companies:
Wider storage temperature range
Reduced coating defects at prolonged storage
For construction companies:
Simpler weld insulation process
Reduced process operations for sleeve application
Durable weld under heat-shrink coupling