Waterborne fluoride-free fingerprint-proof and antifouling polymer composite coating and usage method thereof

Abstract

The invention discloses a waterborne fluoride-free fingerprint-proof and antifouling polymer composite coating and a usage method thereof. The coating is prepared from, by weight, 10-90% of waterborne silicon-containing acrylic polymer, 0-50% of crosslinking component, 0-5% of catalyst, 5-50% of solubilizing agent and 0-85% of water. Low-surface-energy silicon-containing groups in the coating are inserted in polymer structures and finally uniformly distributed in the surface and bulk phase of the polymer coating, so that the surface and interior structures of the coating are uniform, and after the surface of the coating is worn, the interior of the coating still has ideal fingerprint-proof and antifouling performance. Therefore, the fingerprint-proof and antifouling performance of the coating is not influenced by bending, impact, knife scraping, sand grinding, salt corrosion and other external factors. A water-dispersible and fluoride-free system is environmentally friendly, low in cost and good in practicability and transparency, has wide applicability for base materials, and has relatively good durability under various external environments, so that the fingerprint-proof and antifouling coating has certain application prospects.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a water-based fluorine-free anti-fingerprint and anti-fouling polymer composite coating and an application method thereof. Background technique [0002] The anti-fingerprint and anti-fouling coating has a certain water-repellent and oil-repellent effect, so it has low adhesion to human fingerprints, sweat, and other water or oil stains, and can better keep itself clean. In terms of structural composition, this type of functional coating can be divided into two types: those with micro-nano structures on the surface and those without micro-nano structures. One is an anti-fingerprint and anti-fouling coating with micro-nano roughness, which can exhibit a contact angle of more than 150 degrees to water or oil (super-hydrophobic, super-oleophobic, super-amphiphobic), but the roughness often makes the coating have Problems with poor durability and transparency. A coating with a fl...

AI Technical Summary

Problems solved by technology

The potential toxicity and high price of fluorine-containing components in the system further seriously affect the industrial application of coatings

At the same time, there are some anti-fingerprint and anti-fouling coatings formed by adding low surface energy additives in the market. During the film formation process of this type of coating, low surface energy compounds migrate and accumulate on the coating surface to form low surface energy compounds. Composed of single molecules, and the coating body phase contains less or even no low surface energy substances. After a short period of use, the anti-fingerprint and anti-fouling functions will be lost due to surface abrasion.

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