Dasheng heat shrinkable material,heat shrink manufacturer,heat shrink supplier

For corrosion protection of oil, gas, petrochemical, and waste water underground or overhead pipelines.

Product description:
Construction: four-layer system
Internal Adhesive layer: Butyl rubber
External Adhesive layer: Butyl rubber
Film backing: Special blend of stabilized polyolefines
Interleaf: Anti-adhesive film treated with silicone

The installation is carried out after the liquid adhesive and before the outer-layer tape by hand or with a wrapping machine

Product features/benefits:

•Excellent bonding between adhesive and carrier film via co-extruded intermediate layer.
•Mechanically highly resistant tape system.
•Practically impermeable to water vapour and oxygen.
•Resistant to soil bacterial and soil electrolyte.
•Compatible with coating from PE, PP, FBE, PU, CTE and Bitumen and ext… .
•A Total Coating System with:
High adhesion and shear resistance
Resistance to corrosion disbondment
High electrical resistance
High dielectric strength
High corrosion protection for steel substrates

Product properties:

3ply tape	T480, T4100
Physical Properties	Test Method	T480 Typical Value
Physical Properties	Test Method	English	Metric
Color film backing Adhesive inner layer Adhesive outer layer	--	black(grey/green) black black
Thickness Carrie film Internal Adhesive External Ahesive	ASTM D 1000	12.0 mil 13.6 mil 6.4 mil	0.30mm 0.34 mm 0.16 mm
Total thickness	ASTM D 1000	32.0 mil	0.80 mm
Tensile strength	ASTMD1000	70 lbs/in	120 N/cm
Elongation at break	ASTMD1000	650%
Peel strength to primed steel at 23 ℃ at 50℃	EN 12068 Annex C	274.5 lbs/in 137.1 lbs/in	30 N/cm 15 N/cm
Peel strength tape to tape at 23 ℃ at 50℃	EN 12068 Annex B	228 lbs/in 32 lbs/in	25 N/cm 3.5 N/cm
Dielectric strength	ASTMD149	35 Kv
Insulation??? Resistance	EN 12068	108 ohm·m2
Water Vapor Transmission Rate （24h）	ASTM E 96	0.01g/100sq in/24h	0.1g/100sq mm/24h
Brittleness temperature	DIN53372	-51±39	-46±4 ℃
Water Absorption	ASTM D 570	0.08 %
Impact resistance at 23’’	EN 12068	15 J
Cathodic disbandment at 23°c at 50°c	EN 12068	15 mm 30 mm
Lap shear strength at 50℃	EN 12068	0.05 N/mm2

Disclaimer:

All information contained in this technical data sheet is to be used as a guide and is subject to change without notice. Products can be produced according to given specification. Please contact us for further information and confirmation.