How much does the electrophoretic paint film need to bake to cure?
High temperature baking is the last important process for the formation of electrophoretic paint film, because electrophoretic paint can only obtain the best performance coating film after curing. But sometimes the phenomenon of insufficient drying or excessive drying occurs. In the drying process, the drying temperature and drying time of the electrophoretic paint film are the two most important aspects that affect the quality of the drying, especially the control of the drying temperature. So what is the general baking temperature of cathodic electrophoretic paint? The following Hongheshun electrophoretic paint manufacturers will tell you: how many degrees can the electrophoretic paint be baked to be cured.
As far as the current cathodic acrylic electrophoretic paint is concerned, the baking temperature of the electrophoretic paint can be cured by baking at 165 ° C for 30 minutes; and the special requirements of low-temperature electrophoretic paint are generally baked at 120 ° C to 130 ° C It can be dried and cured in 30 minutes to obtain excellent paint film properties.
Therefore, if we want to obtain a good paint film, we must know the baking temperature of the electrophoretic paint used. When baking, we must bake according to the baking parameters of the electrophoretic paint provided by the manufacturer, otherwise it will bring bad results. Influence, then Hongheshun electrophoretic paint manufacturers continue to share: What are the effects of baking temperature on the cathode electrophoretic paint film?
Film baking temperature is too high:
Higher baking temperature is beneficial to shorten the baking time, but if it is not controlled properly, it will cause over-baking, especially for small workpieces and thin parts. Especially in electrophoresis processing plants, this method is often adopted in order to ship in a hurry, and the small and thin parts that follow the thick parts are prone to over-baking. The over-baking results of the paint film are: the gloss becomes lower; the paint film becomes brittle; the impact test cracks; the paint film adhesion test peels off; the salt spray resistance decreases, etc. The white paint film may also turn yellow.
Baking temperature is too low:
If the drying temperature of the cathodic electrophoretic paint film is too low, the minimum curing point of the paint film cannot be reached, and the baking time will be longer, the paint film will not get the proper crosslinking reaction and curing, and the conventional baking time in large production Needless to say inside. In this way, the paint film does not dry out, which may cause some people to like the high gloss of the appearance of the paint film, but the performance of the paint film will be severely reduced. The paint film will stick to the hand and stick together; the hardness is not easy to touch the flowers; Poor adhesion, etc .; reduced corrosion resistance or even unqualified; reduced impact resistance; peeling off paint; poor bending resistance; cracking, etc.
Therefore, we must know the baking temperature of the electrophoretic paint in order to obtain an excellent paint film. In the process of cathodic electrophoresis coating, we must strictly control the drying conditions to ensure that it is performed within the specified process range. At the same time, the baking curve of the drying room should be checked regularly, and the management and maintenance of the drying equipment and conveying equipment should be strengthened; in particular, the temperature and chain speed should be adjusted arbitrarily! Only by baking in the curing condition window of the electrophoretic paint, the formed cathode electrophoretic paint film can obtain the best coating film performance.
Shenzhen Hongheshun Electrophoretic Paint Co., Ltd. takes the research and development of the latest electrophoretic paint coatings and related cathodic electrophoretic paints, color electrophoretic paints, and transparent electrophoretic paint products as its leading products. The one-stop technical service for electrophoretic equipment production provides customers with a comprehensive solution for electrophoretic coating. Hongheshun electrophoretic paint manufacturer has been focusing on the research and development of cathodic electrophoretic paint, matte electrophoretic paint, white electrophoretic paint, low-temperature electrophoretic paint, and transparent electrophoretic paint.