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Communication cold shrink tubing, cold shrink tubing with adhesive (copy)
Communication cold shrink tubing, cold shrink tubing with adhesive (copy)
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Application areas:
1. Suitable for insulation protection of various specifications of medium and low voltage power cable connections and sealing of communication cables and optical cables; 2. Connection of wireless communication towers such as communication base stations and exposed terminals, connectors, antennas, feeders, etc.; 3. Waterproof and moisture-proof sealing of the middle or end of cables and optical cables.
Product Description
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I. Introduction to EPDM Cold Shrink Tubing
Ethylene-Propylene-Diene Monomer (EPDM) is a terpolymer of ethylene, propylene, and a non-conjugated diene. EPDM cold shrink tubing is an insulating sleeve made from EPDM rubber, pre-expanded onto a removable support tube. In use, it is simply positioned and then the support tube is removed. The radial shrinkage force forms a tight seal, providing insulation, dustproofing, waterproofing, and sealing. It possesses excellent mechanical properties, puncture resistance, and high tear resistance, and is resistant to weathering, UV radiation, ozone aging, acids, alkalis, and salt spray corrosion.
II. Product Characteristics
- 1. Easy to install, requiring only manual operation, no heating or special tools are needed, and no hot melt glue or tape is required to reinforce the seal at the joints;
- 2. Suitable for connecting and sealing cables of a wide range of specifications, it can be used for power and communication cables in indoor, outdoor, overhead, underwater or buried applications.
- 3. It has strong resilience, large radial shrinkage force, and small permanent deformation. Even after long-term use, it still maintains constant radial pressure on the cable. It is tightly sealed and has excellent moisture-proof, waterproof, and dustproof performance.
- 4. Because EPDM has excellent resilience and "elastic memory", it can "breathe" with the seal, so it can achieve excellent sealing effect and maintain a very good sealing effect even in dynamic environments with wind blowing and swaying.
- 5. Excellent resistance to salt spray corrosion, acid and alkali, ozone aging, weathering, and ultraviolet aging;
- 6. It has high mechanical strength, good flexibility, and excellent physical and mechanical properties such as puncture resistance, wear resistance, flexural resistance, and fatigue resistance.
Product Parameters
Performance parameters project Typical value Test basis Material silicone rubber EPDM —— hydrophobic excellent excellent —— Protection level IP67 IP67 IEC60529 UV protection Gray scale level 3-4 Gray mark level 4 ASTM G154 Ozone resistance No cracks No cracks GB/T7762 Anti-mold effect Level 0 —— GB/T2423.16 Shore A hardness 43 38 GB/T531 Tensile strength (MPa) 7.5 8 GB/T528 Elongation at break % 700 700 GB/T528 Tear strength kN/m 30 30 GB/T529 Volume resistivity (Ω·cm) 1×10¹⁵ 1×10¹⁵ GB/T1410 Usage Environment Indoor and outdoor Indoor and outdoor —— Ambient temperature -60～90℃ -60～90℃ —— Storage time 2 years 2 years —— Usage time 30 years 30 years —— Note: The IEC 60529 standard only specifies the test methods and requirements for IP67 and lower waterproof and dustproof ratings. The standard stipulates that the test conditions for IP68 are requirements to be negotiated between the manufacturer and the user. Our company can perform IP68 level testing, but the test requirements need to be negotiated with the user. Key performance indicators of the product Testing items Experimental conditions and methods Reference Standard Waterproof rating Immerse in 1 meter of water for 0.5 hours. Requirement: No water should be submerged inside the shrink tubing. IEC60529 Ultraviolet radiation exposure Test cycle: ASTM G154-16 cycle 1 ASTM G154-16 Lamp type UVA-340 Light exposure: 8 hours, (60±3)℃ BPT, 0.89 W/(m²•nm) @340nm Condensation: 4h, (50±3)℃ BPT Exposure time: 1000h Ozone aging Elongation: 20%, pretreatment temperature (23±2)℃, pretreatment time 72h, test temperature 40±2℃, ozone concentration (200±20)×10-8 (V/V), exposure time 72h, after the test there should be no cracks, no damage and obvious deformation. GB/T 7762-2014 Mold test Referring to GB/T 2423.16-2008 Environmental Testing for Electronic and Electrical Products Part 2, Test J: Mold Growth, the test was passed, with a mold growth level of 0. This does not affect the waterproof performance. (Mold growth level 0: No obvious mold growth under 50x magnification.) GB/T2423.16-2008 Product Selection
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The following information is required for selection: the maximum outer diameter ΦD1 of the feeder connector, the outer diameter ΦD2 of the feeder, and the sealing length L;
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