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| Tiancheng Lighting takes you to understand hot -selling UVC lamp bead material s |
| Time:2022-10-08 00:00:00 | view： |
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have taken you Jie thermal selling UVC lamp bead material structure The hottest product in the LED industry this year is the UCV series of ultraviolet disinfection light sources. The principle of UC and ultraviolet anti -virus bacteria, then we know that the ultraviolet light of a specific band will cause a certain degree of damage to the material even if it is very weak. How can we make a more stable artificial UVC light source? Take everyone to understand the materials we used for mass production of UVC light sources. We first review the relevant knowledge of UC UV light:UV (UV) is relatively visible light, the photon energy is higher, and high -energy photons may cause degradation to some materials, produce physical or chemical changes (this is the item (this is the item (this is the item It will be aging and decomposed in the sun for a long time. The sub -class UVC with ultraviolet radiation with a wavelength of 200 to 280nm does not exist in the sun on the ground because it is lower than? The wavelength light of 300nm will be absorbed by the ozone layer in the atmosphere, so there have been few public research data about UV-C degradation materials for a long time. As UVC's sterilization and disinfection effect is widely recognized, more and more products will be designed to use UVC as a disinfection solution. At this time, we need to understand the principle of degradation of materials including high-energy ultraviolet UV-C photon, and in the principle of degradation of materials, and in the materials, and in the materials, and in it When designing product materials, the effect of ultraviolet degradation is considered to extend the service life of the product. The principle of degradation of the three categories of ultraviolet rays: 1. Metal Metal is characterized by metal bonds, metal bonds consisting of tightly accumulated atoms arranged into cyclical lattice structures, all Atoms share an ionized electron \"cloud\". Because metal has highly moving electrons, metal is a good conductor of electrical and heat, and it is easy to interfere with electromagnetic radiation, such as light and radio waves. This explains why the metal is opaque and reflects a certain degree of light. This is because free electrons can use free electron absorption of photon energy without experiencing energy jump or alignment. Therefore, the metal is almost not affected by UV rays.2. Ceramic Ceramic material is formed through the ion key. The lattice arranged by the periodic structure contains positive and negative ions. Most ceramics are metal oxides, and a small number of ceramics are nitride, boron and carbides with strong co -valence bonds. Contrary to the metal, ceramic ions have tight combination of electrons, so they have high key concentration strength, can withstand extreme temperatures, usually have high chemical inertia and are good electrical insulation. This high key intensity and chemical inertia make the ceramics completely influenced by ultraviolet irradiation.3. Quartet In the quartz material (SiO2) is a material that shows the combination of ion bonds and covalent bonds. It can be used through UVC, which is very important for the ultraviolet industry. The main mechanism of ultraviolet absorption in quartz is related to impurities and defects in it. Impurities such as iron and other metals. The electrons of these metal atoms can be upgraded to higher energy levels or released from the atoms. Therefore, it can be used to interfere with electromagnetic radiation, form the so -called \"color heart\", and reduce the glass over time over time. UV transparency. There are also inherent atomic defects in quartz, such as non-key silicon and oxygen atoms that absorb certain vacuum ultraviolet (VUV) and UV-C.4. Poetry Polymer contains a variety of materials, which is characterized by the long molecular chain, the molecular chain entanglement and connecting each other. They show covalent bonds and usually contain carbon ingredients. The covalent key is electronic sharing between two or more atoms to meet the outer outer electronic orbit of composing atoms. Compared with the metal key, the covalent sharing of electrons is local (that is, the electron migration is limited to the nearest key atom), so the polymer is almost always electrical insulators and bad thermal conductors. Compared with metal and ion bonds, the covalent bonds between organic ingredients are relatively weak. Therefore, most polymers are easily degraded due to exposure to UV-C. High -energy photon has sufficient energy, which can increase electrons to higher energy levels, thereby interrupting the covalent bonds and degradation materials. Polymers with carbon-carbon double bonds are usually more vulnerable to ultraviolet degradation and chemical changes. In summary, how to prevent or reduce the degradation of materials by ultraviolet rays? We start with raw materials. The bracket uses aluminum nitride material and gold -plated treatment, which can effectively prevent the degradation of UV light and extend the life of the beads. Ceramic base plus polymer filling to prevent UV from welding materials at the bottom of the bottom of the lamp bead through the bracket, improve the heat dissipation performance, and effectively improve product stability. The light emitting part is the high -light luminous quartz material. The essence of quartz glass is anti -UV, and it also has the dual effects of filtering impurities energy to improve the UV light transmission rate and effect. The raw materials that are difficult to degrade by UV are used for production. After a long time of technical and technological polishing, the UCV lamp beads that can be mass -produced and do not affect the UVC anti -virus bactericidal effect. As long as we can make full use of the characteristics of the UV and adopt effective methods to avoid strengths, UV will also benefit humans ~ |
