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CN-120396494-B - High-strength waterproof board and preparation method thereof

CN120396494BCN 120396494 BCN120396494 BCN 120396494BCN-120396494-B

Abstract

The invention discloses a high-strength waterproof board and a preparation method thereof, and relates to the technical field of boards. The preparation method comprises the following steps of sequentially stacking 1 steel plate, 2 base plates and 1 fingerprint-proof polymer film on 1 fingerprint-proof polymer film, performing hot press solidification, cooling, and discharging to obtain the high-strength waterproof plate, wherein the base plates are prepared from modified kraft paper and modified colored paper. The invention uses components such as modified phenolic resin, hydrophilic silicon dioxide and the like to modify kraft paper, thereby effectively improving the water resistance, fire resistance and bonding strength of the board. Therefore, the invention has wider application prospect.

Inventors

  • Ruan Zixuan
  • RUAN ZHONGYUAN

Assignees

  • 广东兆盈合成新材有限公司

Dates

Publication Date
20260508
Application Date
20250627

Claims (8)

  1. 1. The preparation method of the high-strength waterproof board is characterized by comprising the following steps of: sequentially stacking 1 steel plate, 2 base plates and 1 fingerprint-proof polymer film on 1 fingerprint-proof polymer film, performing hot-pressing solidification, cooling, and discharging to obtain a high-strength waterproof plate; The base layer board is prepared from modified kraft paper and modified colored paper; The preparation method of the modified kraft paper comprises the following steps: B1, adding montmorillonite into formaldehyde aqueous solution, performing ultrasonic dispersion for 2-4h, adding phenol and sodium hydroxide aqueous solution, stirring and reacting for 6-8h at 75-80 ℃, adding deionized water and absolute ethyl alcohol, and stirring for 30-60min to obtain phenolic resin emulsion; B2, adding p-benzenesulfonic acid into formaldehyde aqueous solution, stirring for 20-30min, adding into phenolic resin emulsion, stirring for reaction at 65-75 ℃ for 2-4h, and performing centrifugal separation, washing precipitation and drying treatment to obtain phenolic resin prepolymer; B3, adding phenolic resin prepolymer into deionized water and stirring for 1-2h, then adding zirconium nitrate pentahydrate and stirring for 20-24h, and then carrying out centrifugal separation, washing, precipitation and drying treatment to obtain modified phenolic resin; Adding absolute ethyl alcohol, modified phenolic resin and hydrophilic silicon dioxide into deionized water, performing ultrasonic treatment for 1-2h, immersing kraft paper for 0.5-2h, taking out and drying to obtain modified kraft paper; the preparation method of the modified color paper comprises the following steps: Adding melamine, vanillin and flame retardant DOPO into absolute ethyl alcohol, stirring for 40-60min at 70-75 ℃, heating to 90-95 ℃, adding benzenesulfonic acid, reacting for 8-12h, cooling, pouring into deionized water, stirring for 10-30min, and finally filtering, washing, drying and crushing to obtain synergistic powder; C2, mixing deionized water and melamine in a nitrogen atmosphere, stirring for 20-30min at 90-95 ℃, adding 3, 4-dihydroxybenzaldehyde, adjusting the pH to 9, reacting for 2-3h at 90-95 ℃, cooling to room temperature, filtering, decompressing and rotationally evaporating filtrate to remove water, washing precipitate with absolute ethyl alcohol, and drying to obtain modified melamine resin; and C3, adding synergistic powder into deionized water, performing ultrasonic treatment for 30-40min, adding modified melamine resin, stirring for 20-30min at 60-70 ℃, immersing the color paper for 2-4h, taking out, and drying to obtain the modified color paper.
  2. 2. The method for producing a high-strength waterproof sheet material according to claim 1, wherein the method for producing the base sheet material is as follows: A1, overlapping 3-5 pieces of modified kraft paper, and performing hot pressing and curing to obtain a kraft paper layer; a2, overlapping 1 kraft paper layer on 1 piece of modified color paper, overlapping 1 piece of modified color paper on the kraft paper layer, and performing hot pressing and solidification to obtain the base layer plate.
  3. 3. The method for producing a high-strength waterproof sheet material according to claim 1, wherein the pressure during the heat press curing is 8 to 12MPa, the temperature is 150 to 170 ℃ and the duration is 20 to 60 minutes.
  4. 4. The method for preparing the high-strength waterproof board according to claim 1, wherein the mass ratio of the formaldehyde aqueous solution, the montmorillonite, the phenol, the sodium hydroxide aqueous solution, the deionized water and the absolute ethyl alcohol in the B1 is 10.3-12.9:0.7-0.9:7.5-9.4:1.5-1.9:50-62.5:10-12.5; The mass fraction of the formaldehyde aqueous solution in the step B1 is 37%; The mass fraction of the sodium hydroxide aqueous solution in the step B1 is 2%; The mass ratio of the formaldehyde aqueous solution to the p-benzenesulfonic acid to the phenolic resin emulsion in the B2 is 2.5-3.1:6-7:80-100; the mass fraction of the formaldehyde aqueous solution in the B2 is 37%.
  5. 5. The method for preparing the high-strength waterproof board according to claim 1, wherein the mass ratio of deionized water to phenolic resin prepolymer to zirconium nitrate pentahydrate in the B3 is 100-200:5-10:6-12; and B4, wherein the mass ratio of the deionized water to the absolute ethyl alcohol to the modified phenolic resin to the hydrophilic silicon dioxide is 50-100:50-100:5-10:2-6.
  6. 6. The method for preparing the high-strength waterproof board according to claim 1, wherein the mass ratio of the absolute ethyl alcohol, the melamine, the vanillin, the flame retardant DOPO, the benzenesulfonic acid and the deionized water in the C1 is 100-130:8-10:28-35:28-35:3-5:300-500; The mass ratio of the deionized water to the melamine to the 3, 4-dihydroxybenzaldehyde in the C2 is 100-120:2.1-2.5:6.9-8.3.
  7. 7. The method for preparing the high-strength waterproof board according to claim 1, wherein the mass ratio of deionized water, synergistic powder and modified melamine resin in C3 is 100-150:5:5-10.
  8. 8. A high strength waterproof sheet material, characterized by being produced by the production method according to any one of claims 1 to 7.

Description

High-strength waterproof board and preparation method thereof Technical Field The invention relates to the technical field of boards, in particular to a high-strength waterproof board and a preparation method thereof. Background The decorative panel is a surface decorative material used in the fields of building, furniture, interior decoration and the like, generally has beautiful textures, colors or patterns, has certain physical properties of wear resistance, crack resistance, heat insulation and the like, and is mostly used for improving the decoration and the functionality of a base material. The surface of a steel pallet is difficult to achieve microscopically pure flatness due to material reasons. Although ultra-inferior skin-feel surface treatment is made in recent years by development of polishing and electroplating processes, microscopic bumps are prevented, fingerprints or stains are difficult to avoid after people touch the plate, and the touch feeling and the look of the high-end decorative panel are greatly affected. In order to solve the problems, the prior art proposes a method for hot-pressing an anti-fingerprint polymer film on the surface of a plate, and the method effectively solves the problem of poor anti-fingerprint property. However, in practical application, the decoration panel still has the problems of poor waterproof property, easy water absorption after long-time soaking, and great reduction of gluing strength and poor flame retardant capability. Therefore, the water resistance and fire resistance of the existing decoration panel still need to be improved. Disclosure of Invention The invention aims to provide a high-strength waterproof board and a preparation method thereof, which solve the following technical problems: the existing decoration panel still has the problem of relatively poor waterproofness and fire resistance. The aim of the invention can be achieved by the following technical scheme: The preparation method of the high-strength waterproof board comprises the following steps: sequentially stacking 1 steel plate, 2 base plates and another 1 fingerprint-proof polymer film on the 1 fingerprint-proof polymer film, performing hot-pressing solidification, cooling, and discharging to obtain a high-strength waterproof plate; the base layer board is prepared from modified kraft paper and modified colored paper. Preferably, the preparation method of the base plate comprises the following steps: A1, overlapping 3-5 pieces of modified kraft paper, then performing hot press curing for 15-25min under the conditions of 1-2MPa and 110-150 ℃, and performing hot press curing for 10-20min under the conditions of 1-2MPa and 155-165 ℃ to obtain a kraft paper layer; A2, overlapping 1 kraft paper layer on1 piece of modified color paper, overlapping 1 piece of modified color paper on the kraft paper layer, and then hot-pressing and curing for 1-2min at the temperature of 1-2MPa and 120-130 ℃ to obtain the base layer plate. Preferably, the pressure intensity during the hot pressing solidification is 8-12MPa, the temperature is 150-170 ℃ and the duration is 20-60min. Preferably, the preparation method of the modified kraft paper comprises the following steps: B1, adding montmorillonite into formaldehyde water solution, performing ultrasonic dispersion with power of 30-40W and frequency of 55-60kHz for 2-4 hours at 17-21 ℃, then adding phenol and sodium hydroxide water solution, stirring and reacting for 6-8 hours at 75-80 ℃, then adding deionized water and absolute ethyl alcohol, and stirring for 30-60 minutes to obtain phenolic resin emulsion; B2, adding p-benzenesulfonic acid into formaldehyde aqueous solution and stirring for 20-30min, then adding into phenolic resin emulsion and stirring for reaction at 65-75 ℃ for 2-4h, then performing centrifugal separation, washing precipitate with deionized water for 3-5 times, and then drying at 75-80 ℃ for 20-30h to obtain phenolic resin prepolymer; B3, adding phenolic resin prepolymer into deionized water and stirring for 1-2h, then adding zirconium nitrate pentahydrate and stirring for 20-24h, then performing centrifugal separation, washing precipitate with deionized water for 3-5 times, and drying at 75-80 ℃ for 20-30h to obtain modified phenolic resin; And B4, adding absolute ethyl alcohol, modified phenolic resin and hydrophilic silicon dioxide into deionized water, performing ultrasonic treatment with the power of 100-300W and the frequency of 55-60kHz for 1-2 hours, immersing kraft paper for 0.5-2 hours, taking out, firstly airing at 20-40 ℃ for 12-24 hours, and then drying at 75-80 ℃ for 6-10 hours to obtain the modified kraft paper. Preferably, the mass ratio of the formaldehyde aqueous solution, montmorillonite, phenol, sodium hydroxide aqueous solution, deionized water and absolute ethyl alcohol in the step B1 is 10.3-12.9:0.7-0.9:7.5-9.4:1.5-1.9:50-62.5:10-12.5; The mass fraction of the formaldehyde aqueous solution in the step B1 is 37