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2023
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04
UV adhesive curing conditions and now poor reasons
There are many reasons that will affect the UV dispensing machine dispensing process. First of all, the equipment performance of the dispensing machine itself should be guaranteed, followed by the selection of glue valve and glue to match, glue with different characteristics to understand the performance of glue, glue valve matching is completed, and then according to the selection of glue properties and curing band to choose curing lamp.
When the product is cured, the photosensitizer energy in the UV glue is more than or needs less energy will have an impact. The power used is far more than required, or the continuous oversupply will lead to negative effects, such as anti-curing reaction, cracking and so on. The choice of purple lamp energy must choose moderate, not excessive supply can not be enough power, otherwise it will lead to poor curing.
UV glue is divided into anaerobic type of UV glue and non-anaerobic type of two categories, anaerobic type of contact with air, UV glue will appear oxygen destruction of its polymerization, even if the use of a lot of power purple lamp irradiation is not easy to cure smooth, this is used as an adhesive. Rather than anaerobic UV glue is not easy to be destroyed when polymerization, which is often used for the appearance of coating.
The nature of UV glue will change because of external reasons, such as temperature, light intensity, humidity and other factors, so in use and storage, must do a good job of sealing.
At present, there are two kinds of curing UV glue on the market, one is the use of UV LED lamp, the second is UV mercury lamp, the difference between them is also very obvious, the service life, the use of energy consumption, heat generation, curing speed have obvious differences.
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