To improve the working stability, service life and brightness of LED lamps, the importance of timely release of LED chips is self-evident. It can be seen from the heat transfer process of the LED that the heat sink is the key material for transferring the heat generated when the lamp is working to the outside, so the heat dissipation capability of the heat sink plays a vital role in the heat dissipation of the entire LED lamp. Advantages and Disadvantages of Different Material Radiators, Advantages and Disadvantages of Aluminum Radiators The current aluminum radiator materials commonly used at home and abroad are mainly divided into 1XXX series and 6XXX series aluminum alloys, which can be adjusted according to the needs of different alloying elements. And the ratio, the aluminum material with good plastic formability and processing property has the following advantages: (1) The aluminum heat sink has a large thermal conductivity and a small thermal resistance, such as a thermal conductivity of pure aluminum of 236 W (mk), and a heat transfer rate. (2) high strength, corrosion resistance; (3) lower cost compared with other metal materials, higher heat dissipation per unit price; (4) mature molding process. However, the aluminum radiator has a higher molding temperature, consumes more energy while increasing the cost, and does not meet the requirements for energy saving and emission reduction. Furthermore, the aluminum heat sink is an electrical conductor, and there is no doubt that there is a safety hazard of leakage. Advantages and Disadvantages of Thermally Conductive Plastics Thermally conductive plastics are made of high thermal conductivity fillers (fibrous high thermal conductivity carbon powder, scaly high thermal conductivity carbon powder, etc.), ceramic fillers (boron nitride, alumina, etc.), processing aids added to engineering plastics and general purpose The plastic substrate can be classified into an electrically insulating type and a non-electrically insulating type. Generally, the thermal conductivity of traditional plastics is only about 0.14~0.34W/(mK), while the thermal conductivity of thermal plastics is 1~20W/(mK), which is 50~100 times that of traditional plastics. It can be used to make radiators and shells. , LED components such as substrates. In terms of LED heat sinks, heat-conducting plastics have the advantage of replacing traditional aluminum materials: (1) The density of heat-conductive plastics is smaller than that of aluminum, which is only half of that of aluminum, so the quality of heat-conductive plastic heat sinks is about half lighter than that of aluminum. Reduced transportation costs; (2) Thermally conductive plastics have electrical insulation properties, combined with non-isolated drive systems to reduce drive costs while improving safety; (3) Thermally conductive plastics can be injection molded during processing to increase design freedom while The molding cycle is shortened; (4) The surface emissivity of the thermally conductive plastic is high, which greatly improves the heat dissipation capability, and the emissivity of the radiator can reach 0.93, while the emissivity of the aluminum radiator is generally 0.2 to 0.3. Embroidery Fabric,Embroidery Cloth,Fabric Embroidery,Embroidered Lace Fabric Shaoxing Yiyang Textiles Co.,Ltd , https://www.yiyangfabrics.com