Application of heat shrinkable sleeve and sealant in LED lamps
1. Heat shrinkable tubing
Heat shrinkable tubing is a special polyolefin material heat shrinkable tubing. Its outer layer is made of high-quality, soft cross-linked polyolefin material, which has the advantages of insulation, corrosion resistance, and wear resistance. The inner layer is made of hot melt adhesive, which has It has the advantages of low melting point, good waterproof and sealing, and strong adhesion.
PVC heat-shrinkable tubing can shrink when heated to a temperature above 98°C. It is easy to use and complies with EU RoHS standards. PVC heat-shrinkable tubing is mainly used for lighting, LED pin coating, etc.
At present, the main heat shrinkable tubing used is PET heat shrinkable tubing, whose heat resistance, electrical insulation performance, and mechanical properties far exceed those of PVC heat shrinkable tubing, and PET heat shrinkable tubing is non-toxic and meets environmental protection requirements.
The shape of the heat shrinkable tube is generally round. The shape of the heat-shrinkable tube is available in many colors, and the commonly used one is black
2. LED lighting fixture sealant
1) UV glue and silica gel
There are two glue methods for the bonding and sealing of the plug of LED guardrail tube, namely, UV glue bonding and silicone bonding. Adhesive sealing with UV glue is a new type of sealing method. Compared with the sealing method with silica gel, the curing time is short (UV glue is completely cured only tens of seconds, while the complete curing of silica gel requires 24h); High efficiency, fast shipping, suitable for assembly line operation; transparent film, beautiful product appearance.
2) Single-component neutral silica gel
Single-component neutral silica gel is non-corrosive to glass, metal and other materials and has strong adhesion, and has excellent yellowing resistance and weather resistance. After curing, it has pure cold and heat resistance that ordinary glass glue can't match.
3. Application of heat shrinkable tubing and sealant in led lamps
1) Heat-shrinkable tubing In the production of led tubes and led ceiling lamps, the built-in power supply needs to be insulated. For example, the use of heat-shrinkable tubing for T8led fluorescent lamps can play a good role. When blowing hot air with a hot air cylinder, be careful not to take too long.
2) The sealant can also be used in fixing the aluminum substrate of the led tube.
3) Silica gel is waterproof, so power supplies involving waterproofing can be used. led high bay light, led street light, led flood light
