SB（4X） 4:1汽車線束用高阻燃雙壁管
產品介紹
4:1汽車線束用高阻燃雙壁管由聚烯烴和阻燃熱熔膠雙層構成，外層為聚烯烴有較高的理化性能、良好的收縮使用性能，內層為低熔點、防水密封和機械應變緩沖的魄阻燃熱熔膠。主要功能是密封防水、防腐、防漏氣和多股線束，主要應用于電子設備的電線連接、汽車線束、家電線束、電線電纜分支處、金屬管線、電線電纜修補潛水泵接線等需要密封的場合。
產品特點
?抗紫外線、高阻燃
?起縮溫度：≥70℃
?終縮溫度：≥125℃
?使用溫度：-45℃～125℃
?熱縮比例：4:1
?環保標準：ROHS
?標準顏色：外層黑色，膠層白色
外層技術指標
性能 指標 試驗方法
拉伸強度 ≥10.4MPa ASTM D 2671
斷裂伸長度 ≥300％ ASTM D 2671
熱化后強度 ≥7.3MPa 158℃×168h
熱化后斷裂伸長率 ≥100％ 158℃×168h
軸向變化率 -8%～+8% ASTM D 2671
阻燃性 通過 VW-1
擊穿強度 ≥15KV/mm IEC 60243
體積電阻率 ≥1014??cm IEC 60093
熱熔膠技術指標
性能 指標 試驗方法
軟化點 95+5℃ ASTM E 28
吸水率 <0.5% ASTM D 570
剝離強度（PE） ≥120N/25mm ASTM D 1000
剝離強度（AI） ≥80N/25mm ASTM D 1000
規格表
規格
供貨內徑
(mm) 全縮后尺寸(mm) 標準包裝
米/盤
米/根
公制 英制 內徑 平均總壁厚 膠層壁厚
Ф6.0 1/4 ≥6.0 ≤1.27 1.30+0.20 0.56+0.20 100
Ф8.0 5/16 ≥8.0 ≤1.65 1.65+0.20 0.76+0.20 100
Ф10.0 2/5 ≥10.0 ≤2.00 1.85+0.20 0.95+0.20 1.22
Ф12.0 1/2 ≥12.0 ≤2.41 2.00+0.20 1.02+0.20 1.22
Ф18.0 3/4 ≥18.0 ≤4.45 2.50+0.20 1.37+0.20 1.22
其他規格尺寸可定制




SB（4X） High Flame-proof Double Wall Tube Of Automotive Wiring Harness
Product introduction
A polyolefin and flame retardant hot melt adhesive form bilayers with high flame retardant double wall tube of 4:1 automotive wiring harness, the outer layer is a polyolefin and physical properties, good use performance of inner shrinkage, low melting point, waterproof sealing and mechanical soul fire retardant hot melt adhesive strain buffer. The main function is to seal waterproof, anti-corrosion, anti leakage and multi strands wire harness mainly used in electronic equipment, automotive wiring harness wire connection, appliance wiring harness, wire and cable branch, metal pipe, wire and cable, wiring etc. Need to repair the submersible pump sealing occasions.
Product features
?UV resistance, high flame retardant
?Up shrinkage temperature: ≥70℃
?The final shrinkage temperature: ≥125℃
?The use of temperature: -45℃～125℃
?Heat shrinkage ratio: 4:1
?Environmental standards: ROHS
?Standard color: the outer layer of black and white
The outer layer of technical indicators
Performance Index Test method
Tensile strength ≥10.4MPa ASTM D 2671
The elongation at break ≥300％ ASTM D 2671
Strength after thermal aging ≥7.3MPa 158℃×168h
Thermal elongation at fracture after aging ≥100％ 158℃×168h
Axial change ratio -8%～+8% ASTM D 2671
Flame retardant Pass VW-1
The breakdown strength ≥15KV/mm IEC 60243
The volume resistivity ≥1014??cm IEC 60093
Hot sol technology index
Performance Index Test method
Softening point 95+5℃ ASTM E 28
The rate of water absorption <0.5% ASTM D 570
Peel strength（PE） ≥120N/25mm ASTM D 1000
Peel strength（AI） ≥80N/25mm ASTM D 1000
Specification table
Specification The inner diameter of deliver (mm) The whole shrinkage dimension (mm) Standard packing
M/disk
M/root
The metric system
inch Inside diameter The average total wall thickness Layer thickness
Ф6.0 1/4 ≥6.0 ≤1.27 1.30+0.20 0.56+0.20 100
Ф8.0 5/16 ≥8.0 ≤1.65 1.65+0.20 0.76+0.20 100
Ф10.0 2/5 ≥10.0 ≤2.00 1.85+0.20 0.95+0.20 1.22
Ф12.0 1/2 ≥12.0 ≤2.41 2.00+0.20 1.02+0.20 1.22
Ф18.0 3/4 ≥18.0 ≤4.45 2.50+0.20 1.37+0.20 1.22
Other sizes are available upon request.

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