CN109880034B - Anti-fingerprint melamine resin and preparation method and application thereof - Google Patents
Anti-fingerprint melamine resin and preparation method and application thereof Download PDFInfo
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- CN109880034B CN109880034B CN201910073000.7A CN201910073000A CN109880034B CN 109880034 B CN109880034 B CN 109880034B CN 201910073000 A CN201910073000 A CN 201910073000A CN 109880034 B CN109880034 B CN 109880034B
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- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 63
- 239000004640 Melamine resin Substances 0.000 title claims abstract description 47
- 230000003666 anti-fingerprint Effects 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 229920005989 resin Polymers 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008098 formaldehyde solution Substances 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000005034 decoration Methods 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 239000002313 adhesive film Substances 0.000 abstract description 17
- 230000008033 biological extinction Effects 0.000 abstract description 16
- 239000000839 emulsion Substances 0.000 abstract description 16
- 239000012295 chemical reaction liquid Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- -1 polyethylene Polymers 0.000 description 8
- 239000002994 raw material Substances 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a melamine resin for preventing fingerprints and a preparation method and application thereof. The anti-fingerprint melamine resin is prepared by the following preparation method: 1) adding emulsion extinction resin, formaldehyde solution, polyethylene glycol, melamine and water into a reaction kettle, and adjusting the pH value of the obtained reaction liquid to 8.8-9.2; 2) heating the reaction solution, and adding caprolactam into the reaction solution when the reaction solution becomes clear; 3) carrying out heat preservation reaction, sampling and testing the end point of the fog point, and stopping heating; 4) and adjusting the pH value to 8.0-8.7, discharging, and standing to obtain the anti-fingerprint melamine resin. The application of the anti-fingerprint melamine resin is also disclosed. The melamine resin disclosed by the invention has the function of preventing fingerprints, and when the melamine resin is applied to decorative adhesive film paper, the influence of the fingerprints can be eliminated, so that the decorative material keeps an attractive effect.
Description
Technical Field
The invention relates to melamine resin, in particular to anti-fingerprint melamine resin and a preparation method and application thereof.
Background
With the improvement of living standard and aesthetic sense of people, the consumption trend is changing continuously, and many consumers require fashionable, personalized and magnificent home decoration materials and environment-friendly, clean, safe and high-quality materials. More than 80% of household products in the market are decorative artificial board materials. In the artificial board surface decorating material, the decorating adhesive film paper is one of the decorating materials with the largest component accounting for the total consumption of the decorating materials in the world. The decorative adhesive film paper is made of special titanium powder paper through printing, impregnation and pressing. The artificial board is decorated with the decorative adhesive film paper, so that various defects on the surface of the artificial board can be covered and eliminated, and the artificial board has a fresh, elegant, harmonious and beautiful appearance.
The melamine impregnated bond paper is a bond paper with surface decoration treatment, which is a bond paper with certain resin content and volatile matter content, which is obtained by impregnating plain base paper or printing decorative paper with amino resin (melamine formaldehyde resin and urea formaldehyde resin) and drying to a certain degree, and can be mutually glued or glued with an artificial board substrate through hot pressing. In the aspect of hot pressing, different steel plates are selected, and resin layers of the melamine impregnated bond paper are thermally cured into different shapes, such as: high gloss, matte, super matte, pitted surface, deep relief, etc. The decorative product pressed and pasted by the highlight steel plate has light pollution, while the decorative product pressed and pasted by the matte and super-matte steel plate not only eliminates the light pollution, but also has a sandy granular feeling in touch. However, the decorative surface can be contacted by both hands of people frequently, thereby a finger print is formed on the decorative surface, if a high-gloss product is adopted, the finger print is easy to eliminate, the attractiveness of the decorative material is not influenced, but on the matte and super-matte products, the moisture and oil stains in the finger print are easy to fill in the matte and super-matte convex-concave surfaces, so that the matte effect is locally lost, a reflector is formed, the moisture and oil stains in the convex-concave surfaces are also difficult to eliminate, the obvious finger print influences the attractiveness of the decorative material from the reflection angle, people hope to eliminate the influence of the fingerprint on the decoration, the fingerprint cannot be transferred or attached, the decorative surface is kept in a non-staining state, and the melamine resin coated ink layer can fully embody the attractiveness and gorgeous effects. The finger print contains water, inorganic salts, urea, oil, etc. A large amount of dust, bacteria and the like are bred after being attached to the decorative surface for a long time, and the bacteria are easily introduced to the human body through repeated contact of hands and the decorative surface. The melamine impregnated bond paper is hot-pressed on a base material through a matte and super-matte steel plate, and a film on the final surface has matte and super-matte effects. The light pollution is reduced, the comfortable frosted touch is increased, but the fingerprint is difficult to eliminate.
Today, anti-fingerprint technology has been applied to the industries of electronics, glass, metal and the like, but has not been applied to the furniture decoration industry.
Disclosure of Invention
In order to overcome the defect that fingerprint printing of melamine impregnated bond paper in the prior art is difficult to eliminate, the invention aims to provide an anti-fingerprint melamine resin and a preparation method and application thereof.
The technical scheme adopted by the invention is as follows:
a preparation method of anti-fingerprint melamine resin comprises the following steps:
1) adding 140-180 parts by mass of emulsion-like extinction resin, 450-500 parts by mass of formaldehyde solution, 30-50 parts by mass of polyethylene glycol, 380-420 parts by mass of melamine and 80-150 parts by mass of water into a reaction kettle, and adjusting the pH of the obtained reaction liquid to 8.8-9.2;
2) heating the reaction solution, and adding 40-80 parts by mass of caprolactam into the reaction solution when the reaction solution becomes clear;
3) carrying out heat preservation reaction, sampling and testing the end point of the fog point, and stopping heating;
4) adjusting the pH value to 8.0-8.7, discharging, and standing to obtain the anti-fingerprint melamine resin;
in the step 1), the preparation method of the emulsion extinction resin comprises the following steps: adding 20-40 parts by mass of polyvinyl alcohol resin, 0.5-2 parts by mass of dispersing agent and 50-200 parts by mass of water into a dispersion machine for mixing, adding 10-30 parts by mass of matting powder, and stirring and dispersing to obtain the emulsion matting resin.
Preferably, in the preparation method of the emulsion-like matting resin, the matting powder is silicon dioxide matting powder; more preferably, in the matting powder, the silica has a particle diameter of 4.5 to 5 μm and a porosity of 1.8 to 2.0 mL/g.
Preferably, in the preparation method of the emulsion extinction resin, the dispersing agent is polyolefin grafted maleic anhydride; further preferably, the dispersant is one or two of polyethylene grafted maleic anhydride and polypropylene grafted maleic anhydride.
Preferably, in the preparation method of the emulsion extinction resin, the stirring speed is 1200 r/min-1600 r/min, and the dispersion time is 30 min-40 min.
Preferably, in the preparation method of the emulsion extinction resin, the mass parts of the raw materials are as follows: 25-35 parts of polyvinyl alcohol resin, 0.8-1.5 parts of dispersing agent, 80-120 parts of water and 15-25 parts of matting powder.
Preferably, in step 1) of the preparation method of the anti-fingerprint melamine resin, the used raw materials are as follows: 145-160 parts of emulsion extinction resin, 470-490 parts of formaldehyde solution, 35-45 parts of polyethylene glycol, 385-400 parts of melamine and 100-120 parts of water.
Preferably, in the preparation method of the anti-fingerprint melamine resin, in the step 1), the mass concentration of the formaldehyde solution is 35-40%; more preferably, in the step 1) of preparing the melamine resin, the mass concentration of the formaldehyde solution is 36 to 38 percent.
Preferably, in the preparation method of the anti-fingerprint melamine resin, in the step 2), when the temperature is heated to 77-79 ℃, the reaction liquid begins to become clear; more preferably, the reaction solution starts to become clear when heated to 78 ℃.
Preferably, in the step 2) of the preparation method of the anti-fingerprint melamine resin, the addition amount of caprolactam is 50-70 parts.
Preferably, in the step 2) of the preparation method of the anti-fingerprint melamine resin, the heat preservation reaction is carried out for 50-100 min at 85-95 ℃; further preferably, the heat preservation reaction is carried out for 60min to 90min at the temperature of 88 ℃ to 92 ℃.
Preferably, in the step 3) of the preparation method of the anti-fingerprint melamine resin, the end point of the fog point is the appearance of the fog point of the sample in water at 30 ℃.
Further, in step 3), the method for testing the fog point comprises the following steps: taking a drop (0.05mL) of the resin sample in the reaction kettle, dripping the drop into water at 0 ℃, and observing whether the resin sample liquid is atomized in the water at 0 ℃; and sequentially testing the fog point conditions of the samples in water at 0 ℃, 10 ℃, 20 ℃ and 30 ℃, mixing the resin sample and the water according to the mass ratio of 1:3 when the fog point occurs at 30 ℃, and testing whether the mixed liquid is turbid at 20 ℃ so as to judge the end point of the reaction. And when the end point of the fog point is reached, stopping heating and cooling. And judging the crosslinking degree of the resin liquid by testing the fog point, and if the crosslinking degree is not enough, the resin sample liquid is mutually soluble like water.
Preferably, in the step 1) and the step 4) of the preparation method of the anti-fingerprint melamine resin, the pH adjustment respectively refers to the adjustment of the pH by independently selecting an alkali metal hydroxide solution; further preferably, the hydroxide solution of an alkali metal is a sodium hydroxide solution; the preferred mass concentration range of the sodium hydroxide solution is 15% to 25%.
Preferably, in the step 4) of the preparation method of the anti-fingerprint melamine resin, the standing time is at least 2 hours; more preferably, the standing time is 3 to 5 hours.
The melamine resin for preventing fingerprints is prepared by the method.
The use of such anti-fingerprint melamine resins in the decoration of furniture.
Preferably, the anti-fingerprint melamine resin is applied to the preparation of decorative adhesive film paper, and the decorative adhesive film paper is melamine impregnated adhesive film paper.
Further, the method for preparing the decorative adhesive film paper comprises the following steps: and dipping the adhesive film paper into the anti-fingerprint melamine resin, and then developing and molding through a steel plate to obtain the anti-fingerprint decorative adhesive film paper.
Preferably, in the method for preparing the decorative film adhesive paper, a high-gloss steel plate is adopted for pressing, so that the decorative film adhesive paper with a matte interior and a high-gloss surface is obtained.
Preferably, in the method for preparing the decorative film adhesive paper, a matte or super-matte steel plate is adopted for pressing to obtain the decorative film adhesive paper with matte inside and matte outside.
The invention has the beneficial effects that:
the melamine resin disclosed by the invention has the function of preventing fingerprints, and when the melamine resin is applied to decorative adhesive film paper, the influence of the fingerprints can be eliminated, so that the decorative material keeps an attractive effect.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The starting materials used in the examples are, unless otherwise specified, commercially available from conventional sources. All of the "parts" mentioned in the examples refer to "parts by mass". The particle diameter of the silicon dioxide matting powder used in the examples is 4.5-5 μm, and the porosity is 1.8-2.0 mL/g.
Example 1
The preparation method of the anti-fingerprint melamine resin of example 1 is as follows:
firstly, preparing emulsion extinction resin
The emulsion extinction resin comprises the following raw materials: 20 parts of silicon dioxide matting powder, 30 parts of polyvinyl alcohol resin, 1 part of polyethylene grafted maleic anhydride and 100 parts of water.
Firstly, polyvinyl alcohol resin, polyethylene grafted maleic anhydride and water are put into a dispersion machine, then matting powder is added in batches, and the mixture is dispersed for 30min at the rotating speed of 1400r/min to form emulsion-shaped matting resin.
Secondly, preparing the melamine resin for preventing fingerprints
1) Adding 150 parts of emulsion extinction resin, 486 parts of 37 wt% formaldehyde solution, 40 parts of polyethylene glycol, 395 parts of melamine and 110 parts of water into a reaction kettle, and adjusting the pH value of the obtained reaction liquid to 9.0 by using 20 wt% sodium hydroxide solution;
2) heating the reaction solution to 78 ℃, clarifying the reaction solution, and adding 60 parts of caprolactam into the reaction solution;
3) keeping the temperature at 90 ℃ for 80min, sampling and testing the end point of the fog point, stopping heating and cooling when the sample has the fog point in water at 30 ℃;
4) and adjusting the pH value to 8.5 by using 20 wt% of sodium hydroxide solution, discharging, and standing for 3 hours to obtain the anti-fingerprint melamine resin.
Example 2
The preparation method of the anti-fingerprint melamine resin of the example 2 comprises the following steps:
firstly, preparing emulsion extinction resin
The emulsion extinction resin comprises the following raw materials: 25 parts of silicon dioxide matting powder, 25 parts of polyvinyl alcohol resin, 1 part of polyethylene grafted maleic anhydride and 100 parts of water.
Firstly, polyvinyl alcohol resin, polypropylene grafted maleic anhydride and water are put into a dispersion machine, then matting powder is added in batches, and the mixture is dispersed for 30min at the rotating speed of 1600r/min to form emulsion-shaped matting resin.
Secondly, preparing the melamine resin for preventing fingerprints
1) Adding 145 parts of emulsion extinction resin, 490 parts of 37 wt% formaldehyde solution, 45 parts of polyethylene glycol, 400 parts of melamine and 120 parts of water into a reaction kettle, and adjusting the pH value of the obtained reaction liquid to 9.2 by using 20 wt% sodium hydroxide solution;
2) heating the reaction solution to 78 ℃, clarifying the reaction solution, and adding 55 parts of caprolactam into the reaction solution;
3) keeping the temperature at 90 ℃ for 70min, sampling and testing the end point of the fog point, stopping heating and cooling when the sample has the fog point in water at 30 ℃;
4) and adjusting the pH value to 8.7 by using 20 wt% of sodium hydroxide solution, discharging, and standing for 3 hours to obtain the anti-fingerprint melamine resin.
Example 3
The preparation method of the anti-fingerprint melamine resin of the example 3 is as follows:
firstly, preparing emulsion extinction resin
The emulsion extinction resin comprises the following raw materials: 15 parts of silicon dioxide matting powder, 35 parts of polyvinyl alcohol resin, 1 part of polypropylene grafted maleic anhydride and 110 parts of water.
Firstly, polyvinyl alcohol resin, polypropylene grafted maleic anhydride and water are put into a dispersion machine, then matting powder is added in batches, and the mixture is dispersed for 40min at the rotating speed of 1400r/min to form emulsion-shaped matting resin.
Secondly, preparing the melamine resin for preventing fingerprints
1) Adding 160 parts of emulsion extinction resin, 480 parts of 37 wt% formaldehyde solution, 35 parts of polyethylene glycol, 395 parts of melamine and 110 parts of water into a reaction kettle, and adjusting the pH value of the obtained reaction liquid to 8.8 by using 20 wt% sodium hydroxide solution;
2) heating the reaction solution to 78 ℃, clarifying the reaction solution, and adding 65 parts of caprolactam into the reaction solution;
3) keeping the temperature at 90 ℃ for 90min, sampling and testing the end point of the fog point, stopping heating and cooling when the sample has the fog point in water at 30 ℃;
4) and adjusting the pH value to 8.5 by using 20 wt% of sodium hydroxide solution, discharging, and standing for 3 hours to obtain the anti-fingerprint melamine resin.
The melamine resins finally obtained in examples 1 to 3 were subjected to performance tests, and the results are shown in table 1.
TABLE 1 results of the melamine performance tests of the examples
Application example 1
The anti-fingerprint melamine resin impregnated adhesive film paper is pressed by a highlight steel plate, so that the decorative adhesive film paper with a matte interior and a highlight surface can be obtained. The interior matte can reduce light pollution, the surface highlight can eliminate fingerprints, and can present a frosted feel.
When a finger is pressed on the surface of the decorative adhesive film paper of the application example, the fingerprint disappears within 3s, and the fingerprint cannot be left.
Application example 2
The anti-fingerprint melamine resin impregnated adhesive film paper is pressed by a matte or super-matte steel plate, so that the decorative adhesive film paper with matte inside and matte outside can be obtained. The double matte reduces the light pollution, and even if the water and oil components in the finger print remain in the external matte concave-convex area to form a reflective surface, the internal matte weakens the reflective surface, so that the finger print is not obvious.
When a finger is pressed on the surface of the decorative adhesive film paper of the application example, the fingerprint disappears within 5s, and the fingerprint cannot be left.
Claims (7)
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| CN109880034B true CN109880034B (en) | 2021-09-28 |
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| CN113756136B (en) * | 2021-08-03 | 2022-12-27 | 江苏博大新材料科技股份有限公司 | Fingerprint-resistant high-glossiness impregnated decorative paper and preparation method and application thereof |
| CN116117943A (en) * | 2023-01-16 | 2023-05-16 | 点金新型材料研究院(厦门)有限公司 | Anti-fingerprint skin-feel matte melamine veneer and manufacturing method thereof |
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| CN103648767A (en) * | 2011-04-05 | 2014-03-19 | Lg电子株式会社 | Panel with anti-fingerprint property and manufacturing method thereof |
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