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Lotus leaf type anti-fingerprint feel UV curable coating and its preparation method and application
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A coating and feel technology, used in anti-corrosion coatings, anti-fouling/underwater coatings, polyurea/polyurethane coatings, etc., can solve problems such as cracking, poor adhesion, and easy yellowing
Active Publication Date: 2022-03-18
上海长润化工有限公司
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Problems solved by technology
People have also found some problems when using UV-curable coatings. For example, traditional photo-curable coatings often have poor elasticity and poor adhesion when used, and are prone to yellowing and cracking.
Method used
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preparation example Construction
[0122] Generally, the preparation method of the present invention comprises steps:
[0123] (i) provide raw materials, said raw materials include: (a) film-forming substance; (b) feel elastic powder; (c) photoinitiator; (d) wetting agent; (e) dispersant; (f) solvent; (g) antifouling agents and optional other adjuvants; and
[0124] (ii) These raw material components are mixed to form the UV curable coating material of the present invention.
[0125] In the present invention, some or all of the components may be mixed in steps. Mixing can be performed using conventional mixing equipment.
[0126] Typically, a preferred mixing step includes:
[0127] (ii-a) Mix the film-forming substance, dispersant and part of the solvent (such as 10-15% solvent) (control the rotation speed at 500-600 rpm, disperse for 5-10 minutes) to form the first mixture;
[0128] (ii-b) Dispersively add hand feeling elastic powder, part of the solvent (such as 5-10% solvent), and wetting agent to the f...
[0173] (ii-a) Mix the film-forming substance, dispersant and 10-15% solvent (control the rotation speed at 500-600 rpm, disperse for 5-10 minutes) to form the first mixture;
[0174] (ii-b) Dispersively add the hand elastic powder, 5-10% solvent, and wetting agent to the first mixture and mix (800-1000 rpm, high-speed dispersion for 20-30 minutes) to form a second mixture ;
[0175] (ii-c) Dissolve the photoinitiator in 5-15% solvent, disperse at 500-600 rpm until clear and transparent, then add to the second mixture and mix (500-600 rpm and then disperse for 20- 30 minutes), form the third mixture;
[0176] (ii-d) Using the remaining solvent to adjust the viscosity of the third mixture to a predetermined range (eg, 60±2KU), so as to prepare a finished coating.
[0177] The formulations of Examples 1-3 and Comparative Examples 1-3 are shown in Table 1.
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Abstract
The invention provides a lotus-leaf type anti-fingerprint and hand-feeling UV curable paint, a preparation method and an application thereof. UV curable coating of the present invention contains (a) film-forming material 30-60 weight part; (b) feel elastic powder 2-10 weight part; (c) photoinitiator 2-5 weight part; (d) wetting 0.5-2.0 parts by weight of agent; (e) 0.5-1.5 parts by weight of dispersant; (f) 20-40 parts by weight of solvent; and (g) 0.5-5.0 parts by weight of antifouling agent; The first film-forming component (a1): fluorine-modified acrylic polyurethane and the second film-forming component (a2): silicone-modified polyurethaneacrylate. The coating formed by the coating of the invention has excellent hydrophobicity, stain resistance, corrosion resistance and anti-fingerprint effect, and has soft and elastic hand feeling and excellent use comfort.
Description
technical field [0001] The invention relates to the field of coatings, in particular to a lotusleaf type anti-fingerprint touch UV curable coating and its preparation method and application. Background technique [0002] Photocurable coatings, also known as photosensitive coatings, are mainly composed of photosensitive resins, photosensitizers (photoinitiators) and diluents. At the same time, some additives are added, such as heat stabilizers, and pigments and fillers are added when preparing colored paints. Photocuring refers to the process of cross-linking and polymerizing oligomers and monomers in liquid to form solid products under the action of ultraviolet (UV) or visible light. UV curing is a branch of radiation curing technology, mainly used in the preparation of photocurable coatings. Compared with general curing methods, UV curing has the following advantages: ①The curing time is short, the speed is fast, and it can be cured within a few seconds, and can be applie...
Claims
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