Ultraviolet radiation curing refers to a processing process in which a chemical formula is converted from liquid to solid by means of energy irradiation. Radiation curing mainly includes ultraviolet curing, electron beam curing, etc. At present, ultraviolet curing has a wide range of applications in radiation curing technology, and infrared curing energy is low, and it is difficult to cause short-chain cross-linking reactions of molecules. EB curing limits its application due to its large equipment investment.
1. Radiation curing
Radiation curing refers to a process in which chemical formulas are converted from liquid to solid by means of energy irradiation. Radiation curing mainly includes ultraviolet curing, electron beam curing, etc. At present, ultraviolet curing is widely used in radiation curing technology. EB curing has limited its application due to its large equipment investment. Therefore, what we usually call light radiation curing mainly uses ultraviolet light.
2. UV curing
The basic principle of UV curing is that through UV irradiation, the photoinitiator absorbs light of a specific wavelength, generates free radicals or cations, initiates the polymerization and crosslinking of monomers and oligomers, and generates a network structure in a very short time. The high molecular weight polymer, and then achieve curing.
Three, UV LED curing industry chain
The UV curing LED industry chain mainly includes the supply of raw materials, the supply of curing equipment, chemical formulations and downstream users.
UV-curing raw materials are mainly by-products of petroleum processing. It mainly includes monomers, oligomers, photoinitiators and additives (such as leveling agents, defoamers, wetting agents, slip agents, matting agents, stabilizers, pigments, solvents, etc.). The oligomer is the basic skeleton of the photocurable material, and its properties determine the main properties of the substrate coating after curing (hardness, flexibility, adhesion, optical properties, aging resistance, etc.); the monomer is used to dissolve and dilute the oligomer It will affect the reaction rate of photocuring and the performance of the final coating film; photoinitiator is the key material in the photocuring system. Although the amount is not large, the effect is very important, determining the curing speed and curing quality.
Chemical formula products mainly refer to coatings, inks, and adhesives, which provide a material basis for end-user UV curing applications.
Curing equipment refers to the provision of equipment and equipment for the curing process, which mainly includes the supply of light sources such as UV LED devices and modules.
Downstream users, light curing materials have a wide range of applications, suitable for wood, plastic, paper, metal and other substrates, mainly used in printing, plastic coating, packaging, automobiles, home furnishings, 3D printing, electronic components, medical, etc. field.
The difference between traditional tribute lamps and UV LED lamps widely used at present
1. The UV LED lamp is a single-wavelength light source, which only produces wavelengths, which is more reliable for the operator.
2. Ultra-long life of UV LED lamp: The service life is more than 10 times that of traditional UV mercury lamp curing machine.
3. The UV LED lamp is a cold light source, no thermal radiation, and the surface temperature of the illuminated object is low, which solves the long-term thermal damage problem in optical communication and liquid crystal production.
4. The low heat generation of UV LED lamp can solve the problem of high heat generation of mercury lamp printing equipment and unbearable staff.
5. The UV LED lamp can be turned on instantly, and the UV output of 100% power can be reached immediately without preheating.
6. The service life of UV LED is not affected by the number of opening and closing times.
7. Lamps and lanterns produced by UV LED have high light radiation energy, stable light output, good uniform irradiation effect, and improved production efficiency.
8. The irradiation area can be customized, the length is from 7mm to 1000mm.
9. UV LED does not contain mercury and does not produce ozone. It is a more reliable and environmentally friendly alternative to traditional light source technology.
10. UV LED power consumption is lower, and the power consumption is only 10% of the traditional mercury lamp curing machine, which can save 90% of the power. A 50W UV LED point light source can be referred to as a traditional 500W UV high-pressure mercury lamp.
11. The maintenance cost of the light source of UV LED lamps is almost zero. To
The difference between UV LED point light source and traditional UV lamp:
As a new generation of energy-saving and environmentally friendly products, UV LED cold light source curing machine is mainly used to cure paint coatings, and is currently used in many industries. What GMKJ LED wants to tell you today is why so many manufacturers have changed mercury lamps to UV LED curing machines. What is so good about UV LED curing machines? What are the advantages of UV LED cold light sources?
UV LED cold light source can be applied to heat-sensitive materials. Under the exposure of UV LED ultraviolet cold light source, the temperature difference on the surface of the product will not exceed 1°C. Compared with the mercury lamp of high temperature and high pressure, the scope of application has been expanded a lot. The problem of excessive temperature has been solved before, and the product will not be damaged due to the excessive temperature of the product. It avoids the torment of high temperature, makes it easy for people to accept, and does not produce harmful and unpleasant gases such as ozone.
The efficiency of the UV LED curing machine is also very high. The energy of the UV LED curing machine can be 100% output, and 100% of the energy is used to cure the light-curing resin. With 100% output and 100% usage rate, the curing efficiency is of course the fastest. For the traditional curing waiting time of ten minutes, tens of minutes or even days, UV LED can achieve the curing effect in seconds, and the curing quality is also very excellent. Fast and good is the interpretation given by UV LED.
Of course, there are many advantages of UV LED ultraviolet cold light source, including energy saving, long life, environmental protection and so on. If you have any questions about the UV LED curing machine and want to consult, Taoyuan provides technical services.
