[China Aluminum Industry Network] As we all know, heat dissipation materials are an important factor directly affecting the quality and life of LED lamps. The efficiency of LED downlights produced by many manufacturers is lower than expected, and the light decay is too fast. The main reason is that the heat dissipation is not ideal. Therefore, in order to effectively lift the development of LED downlights, an innovative plastic aluminum package Materials came into being.
So, what kind of companies favors plastic aluminum? What is the application effect of mainstream flow aluminum? What is the future development trend? Today we will explore and explore together.
Why plastic-coated aluminum materials become "new darlings"?
With the continuous innovation of LED heat dissipation technology, major material companies have continuously launched new R&D projects for heat dissipation kits, from metal aluminum casings to ceramic products to plastic-clad aluminum heat sink materials. Discussions on heat dissipation materials have never stopped. As plastic aluminum combines the characteristics of plastics and aluminum, it enhances the safety of thermal materials, improves the practicality and aesthetics of the thermal kit, and also reduces the cost of use to a large extent. Currently, there are many companies in the country. R & D and application, including Puwan Optoelectronics, Kunshan Nano, Vedic, Xiangxin Optoelectronics, Anson Lighting, Sanzhi Lighting, Shepherd Lighting, etc.
As a company that develops and applies heat-dissipating and heat-dissipating plastics in LED lighting kits (plastic-clad aluminum structures) in the country, Puwan Optoelectronics has been widely recognized and favored in the industry and has gained popularity since its introduction of the first plastic-clad aluminum heat-dissipation products in 2012. , Hongli, Qinshang Optoelectronics, NVC Lighting and many other first-line big-brand samples, and some smaller customers have more than 1,000. It is reported that at present, the LED heat dissipation kits developed by Puwan Optoelectronics include LED bulb lamps, fluorescent lamps, downlights, candle lamps, table lamps, spotlights, street lamps, PAR lamps, etc., among which the PAR lamps have a large power of more than 100KW and are resistant to high voltage. 4500 volts, over IP65 test.
As a new type of heat-dissipating material, plastic-coated aluminum is currently used by some manufacturers. At the same time, blessings have made it one of the hot topics in the LED lighting industry. Li Tingshuai, chief technical officer of Shenzhen Ansun Lighting Technology Co., Ltd. believes that the advantage of using plastic-coated aluminum is that the power supply can be non-isolated. It does not need to consider the safety issue of high pressure to the human body, and the cost of the corresponding power supply will be reduced.
Li Ting-Sai admitted frankly, on the overall effect, if the use of ordinary plastic material wrapped aluminum, heat dissipation effect is still not ideal, because the ordinary plastic heat conduction is poor, the lamp aluminum internal temperature is more difficult to export. If aluminum is coated with a heat-conducting plastic material, the effect is obvious, but there is a problem of high cost.
In Li Ting Shuai's view, the thermal plastic is a good heat dissipation material, the use of good thermal conductive plastic coated aluminum is a more modest way, although the cost is expensive, but it can guarantee a good cooling effect of the product, but also to ensure the product brand Positioning.
The general manager of Jiangmen City Shepherd Lighting Co., Ltd. Zhong Jinhai also holds the same view, "The heat dissipation effect of the company's used high thermal conductive plastic radiator can also be, feel good, is the cost is too high."
Plastic coated aluminum in the field of downlights is not popular?
In the past two or more years, as major material companies have continued to develop more functions and applications of plastic-coated aluminum, plastic-coated aluminum materials have begun to enter the commercial lighting field from bulb lamps to downlights.
However, the reporter found that plastic-coated aluminum materials are not widely used in downlights. “As a downlight, we currently think that economical, cost-effective and cost-effective use of stamped aluminum is regarded as better. If you use plastic-clad aluminum, you need to use heat-conducting plastic coated aluminum, a good heat dissipation, and the second is texture. If you use Ordinary plastic coated aluminum, too low-end. "Shenzhen Anson Lighting Technology Co., Ltd. Technical Director Li Ting Shuai told the Aladdin News Center reporter.
According to Zeng Mingpeng, deputy general manager of Guangdong Sanzhi Lighting Co., Ltd., plastic-wrapped aluminum is currently the mainstream way of using bulbs, and the temporary application of downlights has not been popularized, but it is expected to gradually increase. The current situation is mainly due to the low prices of some small and medium-sized manufacturers. The price competition, brand manufacturers will be very careful.
We can not help but ask: What are the reasons for this phenomenon? Li Xiangxiang, chairman of Guangdong Xiangxin Optoelectronics Technology Co., Ltd., responded by saying: “Plastic-clad aluminum materials have low thermal conductivity and are suitable for low-power products (below 10W) ​​and are not suitable for high-power commercial lighting products.â€
Li Bixiang further explained that “On the one hand, the thermal conductivity of thermal plastics in the current market is around 5.0, while the internal aluminum thermal conductivity is around 230, and the internal heat is difficult to transmit to the outside. The heat of the product is concentrated inside the lamp body; On the other hand, commercial lighting products have high power and high heat, and use of plastic-coated aluminum materials creates a sense of insecurity in humans."
Plastic aluminum will be the inevitable direction of the future downlight cooling?
At this stage, even though the application of plastic-coated aluminum materials in LED downlights has not yet been popularized, Tao Tao, general manager of Dongguan Puwan Optoelectronics Technology Co., Ltd., is very optimistic about its application in the field of downlights, and believes that plastic aluminum will be The inevitable direction of the downlight of the downlight will become the mainstream material for the cooling of the downlight.
Tao Tao from the perspective of environmental protection and cost to tell customers and end-users for the cooling of the heart of the lamp, that plastic aluminum is a better choice: "First of all, because there are two drawbacks of hardware, one is environmental issues, because the production of hardware The process has a great impact on environmental protection, and secondly, environmental inspections are now very strict, which is a very important signal, followed by a relatively high cost.Because of the cost of a die-casting downlight, the material may not be too expensive, but now the cost of die casting, Including the cost of post-processing, the overall cost will be very high, and if you choose plastic-clad aluminum downlight, you can completely avoid two problems, and its production does not require oxidation and other processes, which can greatly reduce the pollution problem, in addition, without the need for die-casting, economic The benefits are more obvious."
At the same time, according to the heat-dissipating material, Tao Tao believes that due to the large size of the downlight, the diameter is from 2.5 inches to 10 inches or even larger. Therefore, the requirements for the heat-dissipating material are rather harsh, and in addition to the heat-dissipation itself, it is also guaranteed that it will not be deformed or cracked over a large area. All in all, the downlight can not use a single material to solve this problem, nor can it be used to buy a material in the market to cool the downlight, because it will easily be cracked, deformed, insufficient heat dissipation or color time. A long time will be yellow and a series of risks.
Later, for the application of heat-dissipating materials, Tao Tao emphasized that “it must be combined with a heat dissipation scheme and more appropriate materials and solutions should be selected based on the positioning of the product.â€
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