How to distinguish ultraviolet sterilization lamp from ultraviolet curing lamp
Ultraviolet sterilization lamp actually belongs to a low-pressure mercury lamp. Low-pressure mercury lamp uses low mercury vapor pressure (<: 1-2Pa) is excited to announce ultraviolet light, and there are mainly two emission lines: one is the wavelength of 253.7nm; The other is 185nm wavelength, both of which are invisible to the naked eye.
how is the sterilization lamp sterilized?
the sterilization lamp does not need to be converted into visible light, and the wavelength of 253.7nm can play a very good sterilization role. This is because there is a rule for cells to absorb light waves, and ultraviolet rays at 25~27nm have the maximum absorption. The absorbed ultraviolet rays actually act on the genetic material of cells, that is, DNA, which plays a photochemical role. The energy of ultraviolet photons is absorbed by the base pairs in DNA, causing the genetic material to mutate and make the bacteria die immediately.
Can ordinary ultraviolet lamp replace UV curing lamp
No. Ordinary ultraviolet lamp is a low-pressure mercury lamp for sterilization, and its wavelength is mainly at 254 and 185nm. However, some high-pressure mercury lamps in the UV lamp market participate in certain metal halides to improve their characteristics, so that their main peak becomes 365nm, which is used for light curing. This is one, and the other is that the power density of UV-curing lamps will be very high, which is beyond the reach of ordinary ultraviolet lamps, and it can be hundreds or thousands of times.
no, although the wavelength of ultraviolet rays is similar, the intensity is not enough. The ultraviolet light sources used for curing are all multi-heads with hundreds of watts, and only a few tens of watts for a lamp tube, so the curing time is much longer when the power difference is much higher.
what is the voltage at both ends of the p>UV curing lamp (ultraviolet lamp) after it is started? The power is 8KW, and
uv lamps are widely used in PCB, LCD, electronics, printing, plastics, wood industry, footwear, glass, handicrafts, polishing and painting.
1. Spraying: common plastic spraying companies such as mobile phone case spraying, cosmetic case, MP3 small household appliance case, etc. mostly use it. The two professions of mobile phone case spraying and uv printing have different entreaties about uv, depending on their products and equipment.
2. printing: screen printing, offset printing, and 5-color printing mostly use uv lamps to cure uv ink.
3. Shoe industry: It is to use ultraviolet rays to shine on the data of soles, so as to make them have a chemical reaction and make the adhesive have a good affinity with soles and uppers.
4. wood industry: only the exterior uv paint coating is cured. Because uv coatings (varnish, etc.) have good functions in all aspects: for example, abrasion resistance, acid and alkali resistance, weather resistance and so on.
5. pcb occupation: PCB is a circuit board, uv lamp tube is used for the printing of the circuit board, and METAL (metal halogen lamp tube) is commonly used. There is another kind of exposure lamp also belongs to metal halogen lamp. When PCB is manufactured, it is used for exposure and development, which is commonly used in circuit board companies.
6. lcd occupation: LCD is a low-voltage cold ultraviolet lamp commonly used for display screen, which is different from curing lamp, but it belongs to ultraviolet lamp and has different uses.
7, crafts glazing: as long as it is used to process the appearance of crafts with uv glazing oil, UV lamps can be used.
8. uv active coating line: the pre-treatment project is to use electrostatic precipitator gun or electrostatic precipitator rod for disposal.