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S1-1 Polyolefin heat-shrinkable tube for high-voltage copper busbars of electric vehicles

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Heat shrink products for automotive parts
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Introduction        
Polyolefin heat shrinkable tube for high-voltage copper busbars of electric vehicles is used for high-voltage copper busbars of electric vehicles with a rated voltage of DC60V-1000V or AC25V-660V. Has good high temperature resistance, elastic recovery, anti-cracking, non-suffocation and other characteristics.

 

Features        
Operating temperature: -55~125 ℃        
Minimum full shrinkage temperature: 125 ℃        
Environmentally friendly flame retardant，RoHS、ELV compliant        
Accoondance UL224 E341796        
Shrink ratio: 2:1 & 2.5:1 & 3:1        
Color: Orange, red, black        

 

Technical Data（Standard NB/T 10328—2019）        
Property Test Method Value
Concentricity before shrink % ≥65    
Concentricity after shrink % ≥85    
Length change rate %  -5 ~ +5    
Tensile strength MPa ≥10.4    
Breakdown elongation % ≥300    
After aging [158℃±2℃/168h±2h]
--Tensile strength
--Breakdown elongation
MPa
%
≥7.3
≥100		    
Shore Hardness -- ≤A/15: 95    
Breakdown voltage
--Room temperature
--Aging [158℃±2℃/168h±2h])		 V
≥7000
≥3500		    
Volume resistivity Ω.cm ≥1.0×1012    
Low temperature flexibility[-55℃±2℃/4h±10min] -- No cracking    
Resistant to rupture after being heated[158℃±2℃/168h±2h] -- No cracking    
Heat Shock[180℃±2℃/4h±10min] -- No dripping, no flow, no cracking    
Crack resistance after heating[120℃±2℃/168h±2h] -- Cut extension length≤5mm    
Load deformation[125℃±2℃/60min±5min] % ≤50    
temperature change -- No cracking    
Copper corrosion[158℃±2℃/168h±2h] -- No obvious black spots or chemical attack    
Flame spread -- Burning time≤30S，The indicator flag/bottom cotton is not ignited    
Water absorption[23℃±2℃/24h±1h] % ≤0.5    

 

Dimension                
Size As supplied(mm) After shrink(mm) Applicable rectangular busbar(mm) Applicable round busbar(mm)
  Diameter（Min.） WT（Nomal） Diameter（Max.） WT  L+T D
 2:1                
 12/6 12 0.7 6.0  1.35±0.20 ≥12 ≤15.5 ≥7.5 ≤10
15/7.5 15 0.7 7.5  1.35±0.20 ≥15 ≤18.5 ≥9.5 ≤12
 18/9 18 0.7 9.0  1.35±0.20 ≥18 ≤22 ≥10.5 ≤14
 20/10 20 0.7 10.0  1.35±0.20 ≥19 ≤25 ≥13 ≤16
 22/11 22 0.7 11.0  1.35±0.20 ≥22 ≤28 ≥14 ≤18
25/12.5 25 0.7 12.5  1.35±0.20 ≥26 ≤31 ≥16 ≤20
28/14 28 0.7 14.0  1.35±0.20 ≥28 ≤35 ≥18 ≤22
30/15 30 0.7 15.0  1.35±0.20 ≥30 ≤37.5 ≥20 ≤24
35/17.5 35 0.7 17.5  1.35±0.20 ≥35 ≤44 ≥22 ≤28
40/20 40 0.7 20.0  1.35±0.20 ≥40 ≤47 ≥26 ≤30
2.5:1                
 10/4 10 0.7 4.0  1.6±0.2 ≥8 ≤12.5 ≥5 ≤8
 12/5 12 0.7 5.0  1.6±0.2 ≥10 ≤15.5 ≥6.5 ≤10
 15/6 15 0.7 6.0  1.6±0.2 ≥12 ≤18.5 ≥7.5 ≤12
 20/8 20 0.7 8.0  1.6±0.2 ≥16 ≤25 ≥10 ≤16
 25/10 25 0.7 10.0  1.7±0.2 ≥19 ≤31 ≥12 ≤20
 30/10 30 0.7 10.0  1.8±0.2 ≥24 ≤37.5 ≥15 ≤24
 35/14 35 0.7 14.0  1.8±0.2 ≥26 ≤44 ≥17 ≤28
 3:1                
 15/5 15 0.7 5.0  1.8±0.2 ≥10 ≤18 ≥6 ≤11.5
 20/7.5 20 0.7 7.5  1.8±0.2 ≥14.5 ≤23.5 ≥9 ≤15
25/8.5 25 0.7 8.5  2.0±0.2 ≥16 ≤30 ≥10 ≤18.8
 30/10 30 0.7 10.0  2.1±0.2 ≥19 ≤35 ≥12 ≤22.5
40/13 40 0.7 13.0  2.1±0.2 ≥24 ≤47 ≥15 ≤30

 

 

 

 

 

 

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S1-1 Polyolefin heat-shrinkable tube for high-voltage copper busbars of electric vehicles
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