Does the higher the radiation intensity of the LED ultraviolet flashlight mean the better the curing effect of UV glue? TANK007 explorer flashlight manufacturers give you popular science

1. What is UV ultraviolet light?

UV ultraviolet light is a naturally occurring phenomenon. Sunlight contains various lights, including UV ultraviolet light. UV ultraviolet light can also be produced by artificially simulating sunlight. It is made by sealing an electronic arc lamp In a special quartz glass tube, the quartz tube is filled with inert gas, and the lamp tube is lit by a high-voltage trigger electrode to generate UV ultraviolet rays.

UV flashlight_UV flashlight

The photosensitizer added in the epoxy resin absorbs light with a specific wavelength of 365nm and reacts. The biggest factor of its reaction speed is determined by the irradiance of UV ultraviolet light. However, the relationship between the curing speed of glue and the irradiance of UV ultraviolet light is not linear. It does not mean that the curing time of UV ultraviolet light is 200 minutes when the irradiance of UV ultraviolet light is 20MV/cm2, then the irradiance is 40MV/cm2 curing. The time is 100 minutes, and they are not linear. When we use UV curing, it is best to cure at the highest peak irradiance of UV, so that the curing reaction is the fastest and the curing effect is good. the

     Here is an approximate curing time formula for reference. The formula is calculated: curing time (seconds) = light energy [joule/cm 2 ] / light intensity [watt/cm 2 ] glue. This formula can only be used as a reference, because different countries and different types of glue produced by different manufacturers have * different curing reaction times. Therefore, in the actual production process, UV ultraviolet light curing glue must determine various factors, and each time it is cured under the standard experimental procedure, so as to ensure the efficiency and reliability of curing.

2. UVA flashlight

The higher the irradiance intensity of the UV flashlight, the better the curing effect of the UV glue will indeed be. But it should be noted that the curing speed of UV glue is also related to the wavelength, light intensity and irradiation time of the UV lamp. At the same time, if the irradiation intensity of the flashlight is too high, it may cause excessive curing of the UV glue, which will affect the bonding strength. Therefore, it is very important to choose a UV flashlight with a suitable irradiance intensity to achieve the best UV glue curing effect.

LED UV Flashlight_UVA Ultraviolet Flashlight

Summary analysis: The higher the radiation intensity of the UV flashlight, it can indeed accelerate the curing speed of UV glue, but it does not mean that the curing effect will be better. Because the energy of the light is too concentrated, it may cause the surface of the glue to cure but the inside is still not fully cured, resulting in a decrease in the strength of the joint. Therefore, when using a UV flashlight to cure UV glue, it is necessary to select the appropriate radiation intensity and time according to the specific situation to achieve the best curing effect. At the same time, attention should also be paid to keeping the ultraviolet lamp clean and replacing it regularly to ensure its radiation effect and service life.