Electroplating oil stain treatment agent, I believe everyone has encountered all kinds of oil stains in daily life, which will not only be unsightly. Moreover, it will also affect the use of items. In fact, there are many degreasing agents, so what are the electroplating oil pollution treatment agents?
Electroplating oil stain treatment agent 1 Electroplating oil stain treatment agent is used for priming and degreasing before electroplating.
In the UV vacuum electroplating process, the function of UV varnish is to transform the substrate from liquid to solid after spraying or roller coating on the surface of the substrate, so as to achieve surface hardening, scratch resistance and scratch resistance, and the surface looks bright, beautiful and round. Therefore, the coating quality of UV primer and UV topcoat determines the quality of the whole electroplating process.
In the process of UV vacuum electroplating, the surface of the substrate needs to be pretreated first, otherwise there will be some bad phenomena such as oil spots and oil spots on the surface of the UV coating in the later stage. UV primer has good adhesion to plastic substrate and vacuum coating, and poor adhesion will lead to poor adhesion and paint peeling. At the same time, UV primer should have good leveling performance to ensure the high gloss and mirror effect of vacuum coated metal layer.
Electroplating degreasing agent for degreasing method of pretreatment agent before electroplating
1, Causes and Solutions of Depainting by Vacuum Plating and Spraying UV varnish,
The phenomenon of UV varnish peeling mainly occurs on TPU plastic substrate. On the one hand, the oil on the surface of oily substrate will form a weak interface layer, on the other hand, this is caused by insufficient adhesion between TPU and paint. Therefore, it is necessary to pretreat TPU to remove grease and enhance its adhesion. Jingchuan can spray TPU treatment agent on the substrate to cover the oil stain. At the same time, TPU vacuum plating degreasing agent can improve the adhesion of plastic surface, enhance the adhesion with UV paint, and solve the problem of paint peeling.
2. Causes and solutions of bad problems caused by oil pollution in 2.UV vacuum electroplating,
ABS, ABS+PC, PC, TPU and other materials are common substrates for vacuum plating. Generally, products are molded by injection molding process, which will cause the problem of spraying neutral or oily release agent (release agent) on the mold during production, so that there is a mixed release agent on the product. Even if the surface is cleaned before spraying, the release agent cannot be cleaned, and it will also lead to problems such as oil spots after UV primer.
By coating Jingchuan UV vacuum electroplating degreaser with primer, it can be sprayed on the surface of greasy workpiece to cover greasy dirt, and can also enhance the interlayer adhesion between UV primer and substrate, so that the combination between substrate and primer not only remains on the surface, but also the adhesion between coating and substrate reaches the molecular level, thus enhancing the adhesion.
Electroplating oil stain treatment agent 2 vacuum electroplating oil stain treatment agent degreasing method plastic UV vacuum electroplating surface pretreatment agent
The main factor affecting the yield of plastic UV vacuum coating process is the degreasing treatment of workpiece surface during injection molding, followed by the strong adhesion between vacuum electroplating UV primer and substrate surface. The common solution in adhesion is to improve adhesion by coating primer with adhesive treatment agent. What we are going to discuss today is how to solve the problem of oil stain on the surface of plastic injection parts and improve the yield of plastic UV vacuum coating.
The main purpose of vacuum coating is to change the physical and chemical properties of plastic surface through UV vacuum coating process and form a functional surface treatment effect. In the aspect of appearance decoration, vacuum coating technology can make the surface of workpiece reach a certain added value and improve its wear resistance, scratch resistance and oil resistance.
Oil removal method of surface pretreatment agent for plastic UV vacuum electroplating
The yield of vacuum electroplating is very important to the cost and electroplating effect, but for plastic parts with injection molding process, the rejection rate caused by the adhesion of mold release agent and mold oil stain on the surface has always been an urgent problem to be solved. Although some traditions, such as white oil soaking, ultrasonic cleaning and degreasing powder cleaning, have been widely used in electroplating industry, they are not a good choice in terms of safety, degreasing stability and operability.
Now, the application of electroplating oil stain treatment agent has broken the way of removing oil stain such as mold release agent on the surface of workpiece in the existing vacuum electroplating process. The electroplating oil stain treatment agent is directly sprayed on the surface of the oil stain workpiece by primer construction, and the oil stain is dispersed, covered and leveled by the covering effect of the oil stain treatment agent, and then the electroplating UV primer is sprayed for electroplating.
Therefore, the advantage of the primer-coated electroplating oil stain treatment agent in degreasing is that it can be directly sprayed to cover the oil stain at one time, without complicated operation procedures and bearing the safety risks brought by white electricity oil. In addition, the electroplating oil stain treatment agent of the invention contains no halogen, can be sprayed by wet method, has good leveling property, and is suitable for the vacuum electroplating oil stain removal process of ABS, PC, TPU, ABS+PC and other materials.
Electroplating oil stain treatment agent 3 is generally used for degreasing in electroplating industry, and should be white oil, degreasing powder and electroplating oil stain cleaning agent.
White oil belongs to no. 120 gasoline. Generally, wiping and soaking cleaning have a certain degreasing effect, but the effect is not very stable and dangerous, and the advantages outweigh the disadvantages in actual operation.
Degreasing powder is widely used in pretreatment of electroplating and spraying industries such as hardware and plastics, and can be divided into chemical degreasing powder and electrolytic degreasing powder according to their properties. Chemical degreasing powder includes iron and steel chemical degreasing powder, copper and iron chemical degreasing powder, alloy chemical degreasing powder and plastic chemical degreasing powder; Electrolytic degreasing powder also includes iron and steel electrolytic degreasing powder, copper-iron electrolytic degreasing powder, alloy electrolytic degreasing powder and plastic electrolytic degreasing powder.
Compared with white oil and degreasing powder, the electroplating oil stain treatment agent has simple operation process. Sprayed on the surface of the material by spraying, covered with oil, without halogen. In the injection molding process of ABS, PC, TPU and other materials, it has a good and stable effect. In general, the effective way to solve the problem of electroplating oil removal of plastic parts is to fill electroplating oil stain treatment agent for cleaning, which can not only remove oil, but also improve adhesion.
First, soak in white oil to remove oil.
White oil belongs to no. 120 gasoline. Generally, wiping and soaking cleaning have a certain degreasing effect, but the effect is not very stable and dangerous, and the advantages outweigh the disadvantages in actual operation. In the process of operation, it is also relatively unfriendly to the artificial working environment.
Second, defatted powder
Degreased powder is usually cleaned by ultrasonic wave, which is widely used in pretreatment of electroplating and spraying industries of hardware and plastics. According to its properties, it can be divided into chemical degreasing powder and electrolytic degreasing powder. Chemical degreasing powder includes iron and steel chemical degreasing powder, copper and iron chemical degreasing powder, alloy chemical degreasing powder and plastic chemical degreasing powder; Electrolytic degreasing powder also includes iron and steel electrolytic degreasing powder, copper-iron electrolytic degreasing powder, alloy electrolytic degreasing powder and plastic electrolytic degreasing powder.
Third, the degreasing agent for electroplating adopts spraying method.
Compared with white oil and degreasing powder, Jinchuan electroplating oil stain treatment agent has simple operation process. Sprayed on the surface of the material by spraying, covered with oil, without halogen. It has a good and stable cleaning effect on oil stains such as release agent during injection molding of ABS, PC, TPU and other materials. Under normal circumstances, the effective solution for electroplating oil removal of plastic parts is to clean them with electroplating oil pollution treatment agent, which can not only remove oil, but also improve adhesion.
The use of degreasing method in UV vacuum electroplating process also determines the yield of electroplating to a great extent. In different periods of electroplating industry development, its degreasing method will also be improved with the progress of technology. Compared with cleaning methods such as soaking in white oil, degreasing powder, etc., the degreasing agent for electroplating in Jingchuan of the invention has simple operation process, high degreasing efficiency, no safety problems, no halogen, phthalate esters and heavy metals, and is environmentally friendly.