3:1 halogen free flame retardant double wall tube

Features:

● Thermal shrinkage ratio: 3∶1

● Initial shrinkage temperature: ≥+70℃

● Complete shrinkage temperature: ≥+125℃

● Service temperature: -45℃~+125℃

● Flame retardant

● Environmental standards: RoHS，SONY

● Colors: Black (ten standard colors are available for customization)

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Halogen-free flame-retardant double-walled tube consists of a double layer of halogen-free flame-retardant polyolefin and hot-melt adhesive, the outer layer is halogen-free, flame-retardant polyolefin insulation material, the inner layer of hot-melt adhesive can buffer mechanical strain and sealing strong. The main function is to seal waterproof, anti-corrosion, air leakage and insulation protection, mainly used in all kinds of wire harnesses, marine wire and cable and metal tubes need to seal waterproof, moisture-proof and anti-corrosion occasions of sealing insulation, bundling and fixing and other fields.

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	ASTMD 2671 B	Through
Breakdown strength(kV/mm)	IEC60243	≥15
Volume resistivity(Ω ·cm)	IEC60093	≥1X1014

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:

Type mm	ID mm	After shrinking mm			Packing
		Inner diameter	Total wall thickness	Adhesive layer wall thickness	m/tray, m/root
φ2.4	≥2.4	≤0.8	0.80±0.30	0.40±0.2	200
φ3.2	≥3.2	≤1.0	0.90±0.30	0.40±0.2	200
φ4.8	≥4.8	≤1.6	1.05±0.30	0.40±0.2	100
φ6.4	≥6.4	≤2.2	1.25±0.30	0.45±0.2	100
φ7.9	≥7.9	≤2.7	1.35±0.30	0.45±0.2	100
φ9.5	≥9.5	≤3.2	1.45±0.30	0.50±0.2	50
φ12.7	≥12.7	≤4.2	1.75±0.30	0.50±0.2	1.22
φ15.0	≥15.0	≤5.2	1.75±0.30	0.55±0.2	1.22
φ19.1	≥19.1	≤6.3	2.00±0.30	0.60±0.3	1.22
φ25.4	≥25.4	≤8.5	2.10±0.40	0.60±0.3	1.22
φ30.0	≥30.0	≤10.2	2.15±0.40	0.65±0.3	1.22

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