Environmental Vo-class flame retardant dual wall tube

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The environmental protection V0 flame retardant dual wall tube is composed of high flame retardant polyolefin and hot melt adhesive. The outer polyolefin insulation flame retardant material, the inner layer hot melt adhesive can buffer the mechanical strain and the sealing property is strong. The main functions are sealing and waterproof, anti-corrosion, air leakage, multi strand wire harness and insulation, widely used in various kinds of harness, marine wire and cable and metal pipe, such as sealing, waterproof, moisture- proof, sealing insulation, binding and fixing in anticorrosive occasions.

Technical parameters:

Properties	Test method	Value
Tensile strength(Mpa)	ASTM D 2671	≥10.4
Elongation at break (%)	ASTM D 2671	≥300
Tensile strength after aging(MPa)	158℃X168h	≥7.3
Elongation at break after aging(%)	158℃X168h	≥100
Axial rate of change(%)	ASTM D 2671	-8~+8
Flame retardant	ASTM DTL 23053/4	Self-extinguishing in 60 seconds
Breakdown strength(kV/mm)	IEC60243	≥15
Volume resistivity(Ω ·cm)	IEC60093	≥1X1014
Flame retardant	GB/T 2408	V-0
Flame retardant	GB/T 2408	HB

Adhesive Technical parameters:

Properties	Test method	Value
Melting point(℃)	ASTM E 28	90±5
Water absorption(%)	ASTM D 570	<0.2
Peel strength(PE)(N/25mm)	ASTM D 1000	≥120
Peel strength(Al)(N/25mm)	ASTM D 1000	≥80

Size:

Specification		Supply inner diameter	Dimension after full shrinkage mm			Standard Package
Imperial	mm	mm	Inner diameter	Total wall thickness	Adhesive layer wall thickness	m/tray, m/root
1/8	3.2	≥3.2	≤1.0	0.90±0.30	0.40±0.2	200
3/16	4.8	≥4.8	≤1.6	1.05±0.30	0.40±0.2	200
1/4	6.4	≥6.4	≤2.2	1.25±0.30	0.45±0.2	200

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