I. Introduction of Dong Peng Ceramics Company
Dong Peng Ceramics is produced in Guangdong Co., Ltd., so Dong Peng Ceramics has been adhering to the core concept of "harmony and honesty", specializing in the production of industrial bricks and bathroom products for wall tiles and floor tiles, and has become the largest professional manufacturer with the most complete varieties and models and the best reputation in China. Dong Peng tiles take quality as the brand, technology as the promotion and word of mouth as the purpose. The brand value of 20 14 exceeds 1 100 million yuan, ranking first in the ceramic construction industry. Since its establishment 42 years ago, Dong Peng has been adhering to the professional spirit of "student-oriented, proficient in this field", and is determined to innovate, and has become a leader in the ceramic industry of the motherland with products that lead the consumption trend of the industry and innovative business models.
Second, the principle of Dong Peng ceramics
The radiation principle of ceramic products is to produce two phonons and multiple phonons, which have the vibration effect of random vibration. Some metal oxides and borides in high emissivity ceramic materials have strong red-activated polar vibration. These polar vibrations have very strong anharmonic effects, and their absorption coefficients in the dual-frequency and single-frequency regions are generally in the order of100 ~100 cm-1,which is equivalent to the low reflectivity of the medium-intensity absorption region in this region, which is conducive to the formation of a relatively flat strong radiation band.
As far as we are concerned, the radiation band word with high thermal radiation efficiency develops from the wavelength of strong vibration to the whole two-phonon combination and frequency region of short wave, including some multi-phonon combination regions, which are the same characteristics of most radiation bands of high radiation ceramic materials, and the strong radiation band mainly comes from the two-phonon combination radiation of this band. The radiation band of radiant ceramics is generally concentrated in the two-phonon and three-phonon regions greater than 5m. For infrared radiant ceramics, the radiation in 1~5m band mainly comes from the in-band transition of free carriers, and the radiation greater than 5 m band is mainly counted as the combined radiation of two phonons.
Three. Advantages of Dong Peng ceramics
The process of heat exchange is conduction, convection and radiation. In order to effectively dissipate heat, people often realize it by reducing the thermal resistance convection coefficient of the heat flow path, but often ignore the thermal radiation. LED lamps generally use natural convection to dissipate heat, and the heat generated by the radiator is quickly transferred to the surface of the device. Because of the low convection coefficient, heat can not be dissipated into the surrounding air in time, which leads to the increase of external temperature and the deterioration of LED working environment. Increasing the emissivity can quickly take away the heat in the form of thermal radiation from the surface of the radiator. Generally, the surface emissivity of radiators is improved by anodic oxidation, and ceramics itself can have high emissivity without too much subsequent treatment.
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