Confucian Electronics: The short board of the aluminum substrate market highlights

"At present, most of the thermal conductivity of 1.0w/mk or 1.5w/mk is not scientifically based, because there is no recognized authoritative thermal conductivity evaluation method in the market." Shenzhen Ruwei Electronics Co., Ltd. (hereinafter referred to as " "Jade is electronic", general manager Jian Yucang said.

LED lighting has been greatly improved in product quality after the support of the government in recent years and the development of the industry itself. But as end users of aluminum substrates, they are still most concerned about the price when purchasing, not its performance in terms of heat conduction and reflection. At the same time, the emergence of new types of plates has also gradually magnified the short plates of aluminum substrates in terms of materials.

Jian Yucang said that the current aluminum substrate manufacturers are still in the “troubled times” stage, and the government or industry-related standards are urgently to be officially introduced.

Raw material short board highlights

Since the establishment of Confucian Electronics in 2009, it has only received a large flat sheet of 900 square meters of aluminum products from an LED company this year. The scattered market situation has forced aluminum substrate factories to put cost control in the first place. This is also the problem that domestic listed companies have not appeared in the sub-area of ​​aluminum substrates.

"This year's market environment has made us very excited. Many LED lighting companies have transferred orders for aluminum substrates to domestic manufacturers." Jian Yucang believes that technically, domestic aluminum substrates are enough to compete with US-owned or Taiwanese manufacturers, but In terms of materials, almost all of the thermal insulation materials used in domestic aluminum substrate factories use imported materials.

Because of the key factors affecting quality from aluminum substrates alone, in addition to process control, the most important is the choice of thermal conductive sheets and thermally conductive insulating materials.

Jian Yucang said that the domestic thermal conductive adhesive is far from the foreign products in terms of stability, heat conduction and pressure resistance. Although the domestic thermal conductive insulation materials are the same as those of foreign countries, the main materials are ceramic powder and resin, but the ratios and processes are different in each family, which directly leads to the far-reaching performance of the finished products. "A few foreign manufacturers of good thermal insulation materials are even willing to cooperate with large aluminum substrate manufacturers and are not willing to sell their products to the mainland."

Product lacks uniform standards

“Ruyi Electronics has always been positioned in the high-end market, and we are more willing to provide customers with high-quality aluminum substrate products.” Jian Yucang said that from the current market point of view, the performance parameters of aluminum substrates have not been introduced, and the test methods are not. Unite. "The main role of aluminum substrates is in heat conduction and reflection. If these are not the criteria for determining their quality, they are very unfavorable to the development of the entire industry."

The reporter learned that the thermal conductivity of aluminum substrates is generally divided into two major categories of 1.0w / mk and 2.0w / mk, but most of the aluminum substrate manufacturers claim that the thermal conductivity is unfounded. For the aluminum substrate authoritative manufacturers like Bergs, their thermal conductivity is strictly tested by the authoritative testing department according to the American standard quality inspection method, while most domestic manufacturers only have high-profile claims but cannot provide authoritative quality inspection reports.

Jian Yucang believes that although there is no standard in this area in China, it is completely possible to determine the thermal conductivity according to the standards and testing methods of the American Begs.

It is understood that Beggs has been involved in the thermal conductive materials industry since the 1970s and has been the world's leading manufacturer of thermal conductive products and is an absolute leader in thermal conductive materials. Using the standards of Bergs to detect domestic aluminum substrate products, the high thermal conductivity is often only 0.5w/mk to 0.6w/mk.

Unfinished

For more information, please refer to "High - tech LED - Technology and Applications" 1 February issue