Heat-shrinkable tubes and cold-shrinkable tubes are relatively common in the market. Friends who have used them should know that heat-shrinkable tubes can be used in many places, as long as they need to be protected. They are used in military industrial enterprises, aircraft and tanks, ships, subways, high-speed railways and automobiles, as small as household appliances, mobile phone charging cables and earrings, etc. Some are visible, and some are hidden in the equipment and cannot be seen, but heat shrinkable tubes It is real and cannot be ignored;
Tools/Materials
A heat shrink tube of appropriate length and a cold shrink tube material
A heating tool Hot air gun
Method/Steps
Cold shrink tube has a relatively narrow range of use compared to heat shrink tube, and its function is not as powerful as heat shrink tube, but it is used in the communication industry , but unmatched by other insulation materials;
1. The usage principles of heat shrink tube and cold shrink tube are different. Heat shrink tube uses the principle of radiation expansion, while cold shrink tube uses the principle of natural expansion of steel wire. Shrinking is a chemical reaction, while cold-shrinking is a physical reaction;
2. Compared with heat-shrinkable tubes of similar specifications and cold-shrinkable tubes, heat-shrinkable tubes are cheaper because the raw materials are cheaper;
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3. Heat shrinkable tubes have a wider range of uses and are more commonly used;
4. Poor cold shrinkable tubes may burst due to high or low temperature or bumps in the environment during transportation. Heat shrinkable tubes do not have this risk. The biggest risk is that they may shrink when the temperature exceeds 70 degrees;
5. There are many materials for heat shrinkable tubes, including silicone rubber, polyethylene, PVC, iron and fluorine. PTFE, fluorine rubber, etc., and cold shrink tubes are currently made of silicone rubber and EPDM;
The biggest advantage of cold shrink tubes is that they do not need to be heated and shrunk, and there is no need to use fire. There are absolute advantages in working at high altitudes. Because of the special principle, it is very suitable for outdoor use. It is widely used in domestic mobile, China Unicom and telecommunications communication tower feeders. It has excellent aging resistance, corrosion resistance, ultraviolet radiation resistance, and waterproof performance. If you are worried about waterproofing Problem, there are also built-in double cement cold shrink tubes, which can be said to be the icing on the cake in terms of waterproof performance;
Notes
Select appropriate insulating tubes according to actual needs
< p>Secondly, pay attention to the correct method when heating or pulling. Proper operation will extend the service life for several years