Antistatic composition for electrochemical aluminum coloring layer and preparation method thereof

Abstract

The invention provides an antistatic composition for an electrochemical aluminum coloring layer and a preparation method thereof. A BOPET film layer, which is used as the carrier of various coatings of electrochemical aluminum, is an insulator. Continuous friction in the production process makes it easy to accumulate and enrich static electricity, which causes certain harm to subsequent processing. The antistatic composition is prepared from the following raw materials in parts by weight: 10-50 parts of acrylic resin, 1-10 parts of cellulose acetate butyrate, 5-10 parts of aluminum powder, 0.1-1 part of aluminate coupling agent, 0.1-1 part of polyamide wax slurry, 10-40 parts of butanone, 10-40 parts of ethyl acetate, 1-10 parts of n-propyl acetate. The antistatic composition has the advantages of simple and easy control preparation process, stable performance, no aluminum deposition phenomenon, convenient and quick use, excellent compatibility with most polymer resins, obvious antistatic effect, no influence on glossiness and hot stamping performance of electrochemical aluminum, and greatly improving appearance quality and yield of electrochemical aluminum.

Description

technical field [0001] The invention relates to the technical field of film coating products, and more specifically relates to an antistatic composition used for anodized aluminum coloring layer. Background technique [0002] Under certain external factors, such as friction, contact, separation, external electric field or electromagnetic field induction, etc., electrons will leave the surface of one material and accumulate on the surface of another material, so that the total number of electrons and the total number of protons are no longer equal, but different. In the process of rapid friction, contact, and separation of different types of insulating materials, the material with strong ability to absorb electrons will appear negatively charged due to gaining electrons, while the other material will be positively charged due to losing electrons. When the resistance of the material is high Static electricity will accumulate. The generation of static electricity is mainly rel...

AI Technical Summary

Problems solved by technology

Among them, the BOPET film layer used as the coating carrier of anodized aluminum is an insulator, and it is easy to accumulate and enrich static electricity during the production process due to constant friction. Now it is mainly eliminated by the static eliminator installed on the coating machine, but the effect is not good, especially It is due to the accumulation of a large amount of static electricity after the coloring layer is coated, dried and rolled, which causes certain harm to the subsequent processing.

If due to the action of electrostatic force, the diaphragm sticks together and is difficult to open during sampling. It must be left for 0.5-1h before measurement can be performed after the static electricity is eliminated. The production efficiency is low; The deviation of the result is large, which affects the control of the coating amount in production, and causes the quality defects of hot stamping of anodized aluminum, such as the dry coating amount of the colored layer is low, the anodized aluminum is too tight, the hot stamping layer is weak, and even the hot stamping cannot be applied; coloring The dry coating amount of the layer is too high, the anodized aluminum is loose, and it is easy to appear paste and powder drop

In addition, due to static electricity, the film after coating the colored layer will absorb the dust in the environment. Because the dust has low surface energy characteristics, aluminum vapor cannot be attached during the vacuum aluminum plating process, forming aluminum-free "trachoma" , affecting the appearance quality of the product, resulting in waste