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Matching of UV curing light source and photo initiator

2016/9/29 Viewers:


Several commonly used UV curing light source, including low pressure mercury lamp, ultraviolet light UV curing light source, LED curing in a high pressure

We are focus on the special LED and application module on the medical lighting and UV market.please contact us:kevin@sunerled.com or http://www.sunerled.com/English/

mercury lamp, xenon lamp and excimer lamp and UVLED, there is a big difference in UV curing light source  emitted from the light source is different. In the UVLED curing reaction, it is necessary to use the photo initiator, which can absorb the energy of a certain wavelength, generate free radicals and cations, which can lead to the reaction of monomer polymerization crosslinking and curing. However, the response range of different light initiator to the photon wavelength is different, so we must ensure the matching of UV LED curing light source and photo initiator in the design of the construction scheme of UVLED.

There are a small amount of 297, 313 and 365nm of UV radiation. This is a kind of efficient UV curing light source, usually the 254nm radiation efficiency can reach above 50%, and the discharge device is relatively simple and reliable, are widely used in sterilization, UVLED curing, environmental pollution and other aspects of governance, at present in the high pressure mercury lamp high-power UV curing light source is the most commonly used, the power density can reach 5 to 25kW/m, the radiation intensity greatly. Pulsed xenon UV curing light source is used, the total radiation intensity, low heat output, capable of forming high radiation pulse. UV LED curing light source radiation energy is mainly concentrated in the visible and infrared region, the proportion of UV radiation is very small, so the efficiency of UVLED curing is relatively low.

With the rapid development of more than and 10 years of semiconductor technology UV LED curing light source become UV curing source upstart. As everyone knows, LED with high efficiency, long service life, energy saving and environmental protection, the use of flexible and convenient, in the visible lighting field, UV LED curing light source and lamp has gradually become the mainstream lighting products, is gradually replacing the traditional light from power to power. UV curing light source with LED radiation efficiency and lower prices, UV curing light source achieved over the 365nm UVA application development, opening a new direction for the research and development of special UVLED curing, UV LED curing light source LED can achieve the same with the traditional gas discharge light source, UVLED curing coating properties can meet the requirements.

The efficiency, power density and other parameters of UV curing light source. The whole system efficiency of UVLED curing with There is nothing comparable to this competitive advantage, the system efficiency is in a high pressure mercury lamp 4 ~ 5 times, and it can meet the requirements of high power applications.

We are focus on the special LED and application module on the medical lighting and UV market.please contact us:kevin@sunerled.com or http://www.sunerled.com/English/