Anti-fingerprint and scratch-resistant water-based glass varnish and preparation method thereof

Abstract

The invention relates to the technical field of glass varnish, and discloses an anti-fingerprint and scratch-resistant water-based glass varnish which comprises a component A and a component B which are independently subpackaged, and the weight ratio of the component A to the component B is (49-99): 1; the component A is prepared from the following components in parts by weight: 4 to 8 parts of ethanol, 30 to 40 parts of epoxy ester resin, 1.5 to 2 parts of dimethylethanolamine, 6 to 8 parts of amino resin, 0.4 to 0.8 part of an antifouling surface aid, 0.2 to 0.4 part of a hand feeling aid, 38 to 57 parts of deionized water, 0.1 to 0.3 part of a de-foaming agent and 0.1 to 0.3 part of a wetting and leveling agent; and the component B is a silane coupling agent. The glass varnish disclosed by the invention is good in transparency, excellent in adhesive force with glass, high in fullness and hardness, capable of being better applied to electronic product screens, and good in comprehensive performance; compared with common glass amino varnish, the glass amino varnish provided by the invention has the advantages of better paint film wear resistance and scratch resistance, excellent anti-fingerprint effect and environmental friendliness.

Description

Technical Field

[0001] The invention relates to the technical field of glass varnish, and in particular to an anti-fingerprint and scratch-resistant water-based glass varnish and a preparation method thereof. Background Art

[0002] With the advent of the electronic age, our living and working spaces are surrounded by all kinds of electronic devices. Mobile phones and tablets with touch screens have become an inseparable part of people's daily lives. Since mobile phone and tablet screens are all black panels, fingerprints, grease, and sweat on the hands will remain on the screen surface after the fingers touch the screen, which will not only cause the readability of the touch panel to drop rapidly, affect vision, but also reduce the usability of the device. How to solve this problem? The first thing people think of is to apply a film. However, after applying the film, the light of the mobile phone screen is refracted, which aggravates visual fatigue; especially when the film is scratched, it is more harmful to the eyes, and it is easy for users to experience symptoms such as dizziness, blurred vision, etc. Another way is to use a screen cleaner, but the screen cleaners currently sold on the market usually only have a cleaning function and cannot reduce the adhesion of fingerprints. Anti-fingerprint and scratch-resistant water-based glass varnish can better solve the above problems.

[0003] There are also some scratch-resistant varnishes in the prior art, such as the Chinese invention patent with application number CN201210418779.X, entitled a high-hardness scratch-resistant two-component waterborne polyurethane wood varnish and its preparation method, which is mainly used to solve the problems of low gloss, low hardness, poor scratch resistance, poor wear resistance, and unstable chemical resistance in traditional single-component waterborne wood coatings, while the existing two-component waterborne wood coatings have the disadvantages of short storage period, long drying time, difficult construction, and hardness and wear resistance far inferior to solvent-based coatings. The high-hardness scratch-resistant two-component waterborne polyurethane wood varnish of the invention is composed of component A main paint and component B curing agent, and specifically discloses each component and its weight percentage, as well as its preparation method. Its key performance indicators, hardness and scratch resistance, have been greatly improved compared to existing technologies. The product has high gloss, and the water resistance, pollution resistance and chemical resistance of the paint film have all been improved. It reduces the amount of irritating volatiles in the paint tank and during the construction process, is more environmentally friendly, has significantly shortened the actual drying time, is easy to construct, and has strong operability. However, it is a wood coating, mainly used on furniture, doors and windows, wall panels, floors, wooden musical instruments, sports equipment and other wooden products, and is quite different from the combined application of electronic product screens.

[0004] Another example is the Chinese invention patent with application number CN202110281166.5, entitled A water-based plant-based anti-fingerprint varnish and its preparation method and application. It uses the emulsifying aid N-003 cationic compound to reverse emulsify the DSM anionic plant-based resin, and precipitates emulsion particles through reverse emulsification. The formed emulsion particles are emulsified and coated by the emulsifier in the original emulsion, and the system forms a hydrophilic-lipophilic balance again to obtain a sandy emulsion, and then a flexible PUD resin with a smaller particle size is compounded to improve the anti-fingerprint performance of the coating. The raw material components of the varnish include: a water-based plant-based resin portion, an emulsifying aid portion, a PUD resin, and dipropylene glycol butyl ether. The raw material components also include: a first defoamer portion, a second defoamer portion, a leveling agent portion, water, a substrate wetting agent, and a thickener, and the weight ratio of the components is specifically disclosed. However, the water-based plant-based anti-fingerprint varnish it provides is mainly used in inorganic decorative board coating to achieve anti-fingerprint effect of the board, and provide good anti-scratch performance and log sand feel, and it mainly uses water-based plant-based resin to achieve the above effects. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide an anti-fingerprint, scratch-resistant water-based glass varnish and a preparation method. The method can prepare the above-mentioned anti-fingerprint, scratch-resistant water-based glass varnish. The glass varnish has good transparency, excellent adhesion to glass, high fullness and hardness, can be well applied to electronic product screens, and has good comprehensive performance. Compared with ordinary glass amino varnish, its paint film has better wear resistance and scratch resistance, and has excellent anti-fingerprint effect and is environmentally friendly.

[0006] The present invention is implemented by adopting the following technical scheme: an anti-fingerprint and scratch-resistant water-based glass varnish comprises independently packaged component A and component B, wherein the weight ratio of component A to component B is 49-99:1; component A comprises the following components in parts by weight: 4-8 parts of ethanol, 30-40 parts of epoxy ester resin, 1.5-2 parts of dimethylethanolamine, 6-8 parts of amino resin, 0.4-0.8 parts of antifouling surface additive, 0.2-0.4 parts of hand feel additive, 38-57 parts of deionized water, 0.1-0.3 parts of defoaming agent and 0.1-0.3 parts of wetting and leveling agent; component B is a silane coupling agent.

[0007] Furthermore, the epoxy ester resin is PJ6904-65A water-based propylene-modified epoxy ester resin.

[0008] Furthermore, the dimethylethanolamine is Resimene CE-7103 methanol / butanol mixed etherified amino resin.

[0009] Furthermore, the antifouling surface additive is P9100 antifouling surface additive.

[0010] Furthermore, the feel aid is Tego-482 feel aid.

[0011] Furthermore, the silane coupling agent is KH-560 glycidyloxypropyltrimethoxysilane.

[0012] A method for preparing an anti-fingerprint and scratch-resistant water-based glass varnish, using the components of the anti-fingerprint and scratch-resistant water-based glass varnish to prepare the glass varnish, comprising the following steps:

[0013] Step a, according to the raw material ratio, ethanol and epoxy ester resin are put into a container, dispersed and stirred at a speed of 400-600 r / min, and dimethylethanolamine and amino resin are added in sequence during the stirring process;

[0014] Step b, increase the speed to 800-1000r / min, add antifouling surface additive, feel additive, defoamer, wetting and leveling agent and deionized water in sequence, and continue stirring for 10-15 minutes after adding;

[0015] Step c, stopping the machine to test the fineness and viscosity, filtering and packaging after passing the test;

[0016] Step d, packaging the silane coupling agent in portions.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The anti-fingerprint and scratch-resistant water-based glass varnish of the present invention has good transparency, high fullness, high hardness, excellent adhesion to glass, can be well applied to electronic product screens, and has good comprehensive performance; compared with ordinary glass amino varnish, the paint film has better wear resistance and scratch resistance, and has excellent anti-fingerprint effect, the paint has a low VOC content, and is environmentally friendly.

[0019] 2. The present invention discloses a method for preparing an anti-fingerprint and scratch-resistant water-based glass varnish, which is used to prepare an anti-fingerprint and scratch-resistant water-based glass varnish. The preparation operation method is simple, the production cost is low, and the efficiency is high. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0021] The object of the present invention is to provide a highly anti-corrosion sulfonated polyaniline modified waterborne epoxy resin coating and a preparation method thereof in view of the defects of the prior art.

[0022] Embodiment 1

[0023] The invention provides an anti-fingerprint and scratch-resistant water-based glass varnish, comprising independently packaged component A and component B, wherein the weight ratio of component A to component B is 49-99:1; wherein component A comprises the following components in parts by weight: 4-8 parts of ethanol, 30-40 parts of epoxy ester resin, 1.5-2 parts of dimethylethanolamine, 6-8 parts of amino resin, 0.4-0.8 parts of antifouling surface additive, 0.2-0.4 parts of hand feeling additive, 38-57 parts of deionized water, 0.1-0.3 parts of defoaming agent and 0.1-0.3 parts of wetting and leveling agent; wherein component B is a silane coupling agent.

[0024] The epoxy ester resin in this embodiment is PJ6904-65A water-based propylene-modified epoxy ester resin produced by Jiangmen Paint Factory Co., Ltd., which is a water-based propylene-modified epoxy ester resin with high gloss, salt spray resistance and good leveling. It has high adhesion to metal and glass substrates, high hardness, high transparency and good fullness, and is suitable for making glass baking paint.

[0025] The dimethylethanolamine in this embodiment is Resimene CE-7103 methanol / butanol mixed etherified amino resin of INEOS Group Holdings Limited, which has a high degree of etherification, methoxy:butoxy=9:1, solid content ≥97%, and has the comprehensive advantages of methyl etherification and butyl etherification. It can improve the hardness, flexibility, image clarity and chemical resistance of the paint film, and cross-link and cure with alkyd resins, polyester resins, acrylic resins, etc.

[0026] The antifouling surface additive in this embodiment is P9100 antifouling surface additive of Xijiapuri Chemical Products Co., Ltd. It is an antifouling surface additive specially developed for easy-to-clean coatings, contains reactive OH active groups, can cross-link with the corresponding base materials, can increase the water-repellency and oil-repellency of the coating, make the paint film have excellent anti-fingerprint effect, can also reduce the dust absorption of the paint film, and improve the easy cleaning of the coating film. In addition, the product has good compatibility with water and can also promote the leveling of the coating.

[0027] The feel aid in this embodiment is Tego-482 feel aid from Digo, which is a highly efficient anti-adhesion and anti-scratch feel aid. Its component is a high molecular weight polydimethylsiloxane emulsion. After addition, it can improve the hydrophobicity of the paint film, prevent adhesion between the paint films, and significantly improve the anti-scratch and anti-scratch properties, making the paint film surface have a very good slippery effect.

[0028] The silane coupling agent in this embodiment is KH-560 glycidyloxypropyl trimethoxysilane from Hangzhou Jessica Chemical Co., Ltd., which is an epoxy-containing silane coupling agent that can significantly improve the adhesion of the paint film to the glass substrate. Since KH-560 is easily hydrolyzed, it has poor storage stability when directly added to component A. Therefore, in this embodiment, it is divided into separate small packages and added to component A before construction.

[0029] A method for preparing an anti-fingerprint and scratch-resistant water-based glass varnish, using the above-mentioned anti-fingerprint and scratch-resistant water-based glass varnish component to produce the water-based glass varnish, comprising the following steps:

[0030] Step a, according to the raw material ratio, ethanol and epoxy ester resin are put into a container, dispersed and stirred at a speed of 400-600 r / min, and dimethylethanolamine and amino resin are added in sequence during the stirring process;

[0031] Step b, increase the speed to 800-1000r / min, add antifouling surface additive, feel additive, defoamer, wetting and leveling agent and deionized water in sequence, and continue stirring for 10-15 minutes after adding;

[0032] Step c, stopping the machine to test the fineness and viscosity, filtering and packaging after passing the test;

[0033] Step d, packaging the silane coupling agent in portions.

[0034] Embodiment 2

[0035] A fingerprint-proof and scratch-resistant water-based glass varnish comprises independently packaged components A and B, wherein the component A comprises the following components in parts by weight: 4 parts of ethanol, 30 parts of epoxy ester resin, 1.5 parts of dimethylethanolamine, 6 parts of amino resin, 0.4 parts of antifouling surface additive, 0.2 parts of hand feel additive, 56.5 parts of deionized water, 0.2 parts of defoaming agent and 0.2 parts of wetting and leveling agent; the component B is a silane coupling agent, and the weight ratio of the component A to the component B is 99:1.

[0036] The anti-fingerprint and scratch-resistant water-based glass varnish was prepared by the preparation method, and the performance of the anti-fingerprint and scratch-resistant water-based glass varnish was tested. The indicators were as follows: film hardness was 2H, VOC was 38g / L, adhesion level was 1, stain resistance level was 1, abrasion resistance (500g / 500r, grinding wheel model: CS-10) was 0.03g, impact resistance was 35cm, glossiness measured by a 60° gloss meter was 87, alcohol immersion resistance for 120 hours was no abnormality, white wine immersion resistance for 120 hours was no abnormality, boiling water resistance for 24 hours was very slightly whitened, normal temperature water immersion resistance for 480 hours was no abnormality, transparency was 98%, and anti-fingerprint RFU73.3.

[0037] Embodiment 3

[0038] A fingerprint-proof and scratch-resistant water-based glass varnish comprises independently packaged components A and B, wherein the component A comprises the following components in parts by weight: 6 parts of ethanol, 35 parts of epoxy ester resin, 1.8 parts of dimethylethanolamine, 7 parts of amino resin, 0.6 parts of antifouling surface additive, 0.3 parts of hand feel additive, 47.4 parts of deionized water, 0.2 parts of defoaming agent and 0.2 parts of wetting and leveling agent; the component B is a silane coupling agent, and the weight ratio of the component A to the component B is 65.7:1.

[0039] The performance of the anti-fingerprint and scratch-resistant water-based glass varnish was tested, and its various indicators were: film hardness of 2H, VOC55g / L, adhesion grade 0, stain resistance grade 1, abrasion resistance (500g / 500r, grinding wheel model: CS-10) 0.03g, impact resistance 40cm, gloss measured by a 60° gloss meter was 90, alcohol immersion resistance for 196 hours without abnormality, white wine immersion resistance for 196 hours without abnormality, boiling water resistance for 24 hours without abnormality, normal temperature water immersion resistance for 640 hours without abnormality, transparency 97%, and anti-fingerprint RFU73.2.

[0040] Embodiment 4

[0041] A fingerprint-proof and scratch-resistant water-based glass varnish comprises independently packaged components A and B, wherein the component A comprises the following components in parts by weight: 8 parts of ethanol, 40 parts of epoxy ester resin, 2 parts of dimethylethanolamine, 8 parts of amino resin, 0.8 parts of antifouling surface additive, 0.4 parts of hand feel additive, 38.3 parts of deionized water, 0.2 parts of defoaming agent and 0.2 parts of wetting and leveling agent; the component B is a silane coupling agent, and the weight ratio of the component A to the component B is 49:1.

[0042] The performance of the anti-fingerprint and scratch-resistant water-based glass varnish was tested, and its various indicators were: film hardness of 3H, VOC72g / L, adhesion grade 0, stain resistance grade 0, abrasion resistance (500g / 500r, grinding wheel model: CS-10) 0.02g, impact resistance 50cm, glossiness measured by a 60° gloss meter was 92, alcohol immersion resistance for 240 hours without abnormality, white wine immersion resistance for 240 hours without abnormality, boiling water resistance for 24 hours without abnormality, normal temperature water immersion resistance for 720 hours without abnormality, transparency 97%, and anti-fingerprint RFU75.1.

[0043] The weight parts of the anti-fingerprint and scratch-resistant water-based glass varnishes in Examples 2 to 4 are shown in Table 1, and the corresponding performance indicators are shown in Table 2.

[0044] Table 1 Anti-fingerprint and scratch-resistant water-based glass varnish weight parts

[0045] raw material Example 2 Example 3 Example 4 Ethanol 4 6 8 Epoxy ester resin 30 35 40 dimethylethanolamine 1.5 1.8 2 Amino resin 6 7 8 Antifouling surface additives 0.4 0.6 0.8 Hand feel additives 0.2 0.3 0.4 Deionized water 56.5 47.4 38.3 Defoaming agent 0.2 0.2 0.2 Wetting and leveling agent 0.2 0.2 0.3 Silane coupling agent 1 1.5 2

[0046] Table 2 Performance indicators

[0047]

[0048] Remark:

[0049] (1) Adhesion and stain resistance decrease from level 0 to level 5, with level 0 being the best, level 5 being the worst, and level 3 being basically qualified.

[0050] (2) Transparency is measured by light transmittance measured by a photoelectric colorimeter (0-100%). The higher the value, the better the transparency.

[0051] (3) The anti-fingerprint performance of the paint film is measured by the SITA cleanliness meter, which measures the cleanliness of the glass surface after ultrasonic cleaning by pressing the coating with a finger. The cleanliness is expressed as the absolute value of RFU. The higher the value, the worse the cleanliness (generally, the RFU value of high-transparency glass is 70, and RFU of about 85 or below is generally considered to be acceptable).

[0052] It can be seen from the above table that the anti-fingerprint and scratch-resistant water-based glass varnish prepared by the present invention has good paint film transparency, high fullness, high hardness, excellent adhesion to glass, can be well applied to electronic product screens, and has good comprehensive performance; compared with ordinary glass amino varnish, the paint film has better wear resistance and scratch resistance, and has excellent anti-fingerprint effect, the paint has a low VOC content, and is environmentally friendly.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anti-fingerprint and scratch-resistant water-based glass varnish, characterized by: The invention comprises independently packaged component A and component B, wherein the weight ratio of component A to component B is 49-99:1; The component A comprises the following components in parts by weight: 4-8 parts of ethanol, 30-40 parts of epoxy ester resin, 1.5-2 parts of dimethylethanolamine, 6-8 parts of amino resin, 0.4-0.8 parts of antifouling surface additive, 0.2-0.4 parts of hand feel additive, 38-57 parts of deionized water, 0.1-0.3 parts of defoaming agent and 0.1-0.3 parts of wetting and leveling agent; The component B is a silane coupling agent.

2. The anti-fingerprint and scratch-resistant water-based glass varnish according to claim 1, characterized in that: The epoxy ester resin is PJ6904-65A water-based propylene-modified epoxy ester resin.

3. The anti-fingerprint and scratch-resistant water-based glass varnish according to claim 2, characterized in that: The dimethylethanolamine is Resimene CE-7103 methanol / butanol mixed etherified amino resin.

4. The anti-fingerprint and scratch-resistant water-based glass varnish according to claim 2, characterized in that: The antifouling surface additive is P9100 antifouling surface additive.

5. The anti-fingerprint and scratch-resistant water-based glass varnish according to claim 2, characterized in that: The feel additive is Tego-482.

6. The anti-fingerprint and scratch-resistant water-based glass varnish according to claim 2, characterized in that: The silane coupling agent is KH-560 glycidyloxypropyltrimethoxysilane.

7. A method for preparing an anti-fingerprint and scratch-resistant water-based glass varnish, using the anti-fingerprint and scratch-resistant water-based glass varnish according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step a, according to the raw material ratio, ethanol and epoxy ester resin are put into a container, dispersed and stirred at a speed of 400-600 r / min, and dimethylethanolamine and amino resin are added in sequence during the stirring process; Step b, increase the speed to 800-1000r / min, add antifouling surface additive, feel additive, defoamer, wetting and leveling agent and deionized water in sequence, and continue stirring for 10-15 minutes after adding; Step c, stopping the machine to test the fineness and viscosity, filtering and packaging after passing the test; Step d, packaging the silane coupling agent in portions.

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