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CN-118006186-B - Dampproof material for indoor decoration ceiling and preparation method thereof

CN118006186BCN 118006186 BCN118006186 BCN 118006186BCN-118006186-B

Abstract

The invention belongs to the field of indoor ceiling dampproof, and discloses an indoor decoration ceiling dampproof material and a preparation method thereof. The material comprises liquid material and powder material, wherein the liquid material comprises acrylic emulsion, epoxy modified water-absorbent resin, water and a first auxiliary agent, and the powder material comprises heavy powder material, light filler, a second auxiliary agent and optionally a humidity-adjusting functional filler. The ceiling dampproof material has the advantages of light weight, easy coating, smooth coating, moisture absorption, moisture release and condensation prevention besides the waterproof and impervious properties of the traditional polymer cement-based waterproof material.

Inventors

  • Si Huitong
  • HAN GUANG
  • ZHOU HE
  • CUI YONGHENG
  • WANG BIN

Assignees

  • 东方雨虹民用建材有限责任公司

Dates

Publication Date
20260512
Application Date
20240123

Claims (6)

  1. 1. The interior decoration ceiling dampproof material is characterized by comprising liquid materials and powder materials; The liquid comprises, by weight, 15-50 parts of acrylic emulsion, 10-35 parts of epoxy modified water-absorbent resin, 30-65 parts of water and 0.1-7 parts of first auxiliary agent; The first auxiliary agent comprises, by weight, 0.1-1 part of a defoaming agent, 0.1-0.5 part of a bactericide, 0.1-1 part of a dry film mildew inhibitor, 0.1-1 part of a wetting dispersant and 1-3 parts of a first thickener; the first thickener is a hydrophobic modified alkali swelling association thickener; the epoxy modified water-absorbent resin is prepared by reacting polyvinyl alcohol, waterborne epoxy resin and polyethyleneimine under the conditions of a solvent, a pH regulator and a cross-linking agent; the mass ratio of the polyvinyl alcohol to the water-based epoxy resin to the polyethyleneimine to the solvent to the cross-linking agent is (3-8)/(30-40)/(3-7)/(40-50)/(0.3-2); the solvent is water; the cross-linking agent is isocyanate trimer; The preparation method of the epoxy modified water absorbent resin comprises the following steps: (1) Mixing and stirring the solvent and the polyvinyl alcohol at a first temperature to obtain a mixture; (2) Mixing and stirring the mixture and the waterborne epoxy resin at a second temperature to obtain a first product; (3) Mixing and stirring the first product and polyethyleneimine at a third temperature to obtain a second product; (4) Mixing the second product with a cross-linking agent for secondary cross-linking, and regulating the pH value of a cross-linking system to 6-7 by a pH regulator to finally obtain the epoxy modified water-absorbent resin; The powder comprises, by weight, 2-140 parts of heavy powder, 2-10 parts of light filler, 1-10 parts of humidity-adjusting functional filler and 0.1-2.5 parts of second auxiliary agent; The second auxiliary agent comprises, by weight, 0.1-0.4 part of a second thickener and 0.1-2 parts of a water reducer; The second thickener is at least one of hydroxypropyl methyl cellulose, starch ether and bentonite; the mass ratio of the liquid material to the powder material is 1 (1.0-2.5).
  2. 2. The interior ceiling moisture-proof material as set forth in claim 1, wherein, The heavy powder comprises, by weight, 30-60 parts of cement, 2-15 parts of quartz sand and 30-70 parts of heavy calcium carbonate; the light filler is at least one of hollow glass beads, closed-cell expanded perlite, hollow acrylic resin, fly ash and ceramic hollow beads; The humidity regulating functional filler is at least one of sepiolite powder, open-cell expanded perlite and diatomite.
  3. 3. The interior ceiling moisture-proof material as set forth in claim 1, wherein, In the step (1), the first temperature is 85-95 ℃, and the mixing and stirring time is 0.8-1.2h; In the step (2), the second temperature is 70-85 ℃, and the mixing and stirring time is 0.8-1.2h; In the step (3), the third temperature is 65-75 ℃, and the mixing and stirring time is 1.8-2.2h; In the step (4), the pH regulator is glacial acetic acid and/or hydrochloric acid solution with the concentration of 1%.
  4. 4. The interior ceiling moisture-proof material according to claim 3, wherein, The mass ratio of the glacial acetic acid to the polyethyleneimine is (0.2-0.5) to (3-7).
  5. 5. The interior ceiling moisture-proof material according to any one of claims 1 to 4, wherein the interior ceiling moisture-proof material has a wet density of 1.0 to 1.6g/ml.
  6. 6. A method for producing the interior ceiling moisture-proof material according to any one of claims 1 to 5, characterized by comprising: Mixing and stirring the acrylic emulsion, the epoxy modified water-absorbent resin, water and the first auxiliary agent uniformly to obtain the liquid material; And uniformly mixing and stirring the heavy powder, the light filler, the second auxiliary agent and the humidity adjusting functional filler to obtain the powder.

Description

Dampproof material for indoor decoration ceiling and preparation method thereof Technical Field The invention belongs to the field of indoor ceiling dampproofing, and particularly relates to an indoor decoration ceiling dampproofing material and a preparation method thereof. Background In the indoor waterproof engineering of the building, people often attach importance to the side wall and ground waterproof construction, but neglect the moisture-proof problem of the ceiling. The establishment and implementation of the national standard GB 55030-2022 general waterproof Specification for construction and municipal engineering plays a positive role in the dampproof popularization of indoor ceilings. The prior art materials in the indoor ceiling dampproof field are searched, and information contents which can be compared and referred with the ceiling dampproof materials are not found. If the polymer cement-based waterproof material for side walls and floors is used as a ceiling material of a wet area, the following defects exist: firstly, the density of cement, sand and other powder is too high, so that the construction of the ceiling is laborious and the construction efficiency is affected. And the traditional rigid moisture-proof material is easy to fall under the influence of gravity. And secondly, the polymer cement-based dampproof material is used for ceiling construction, is easy to condense water drops in a high humidity environment, and does not have a humidity adjusting function. In particular, the roof coating is easy to fall down, collapse, fall off and the like when being subjected to the influence of gravity, and higher requirements are put on the control of the flow state of the roof moisture-proof coating. Meanwhile, the construction of the arm-lifting movable roller coating is laborious for a worker, and the development of a roller coating labor-saving product easy to construct is an important consideration. CN202210728408 discloses a novel light polymer waterproof coating easy to construct, the technology adopts acrylic emulsion to coat perlite, closed pore treatment ensures the overall density of the coating, which is helpful for light construction, but the closed powder loses natural pore structure and reduces specific surface area, loses the function of absorbing moisture, and does not meet the requirement of ceiling moisture-proof material on hygroscopicity. The ceiling part of the wet space is affected by temperature difference and humidity, so that condensed water drops are easy to drop, and a plurality of inconveniences are brought to life. The compound with hydrophilic groups such as-OH, -COOH, -SO 3H,-NH2 and the like is widely used in moisture absorption material products, but is easy to be swelled and dissolved after being in a humid environment for a long time, thereby greatly reducing the adhesive force between the material and a base layer and the service life. Therefore, aiming at the problems that the existing polymer cement waterproof product does not have the characteristic of preventing water drops from condensing, and the density of the product is relatively heavy and the product is easy to fall down and labor is wasted in construction when the product is used for ceiling construction, the indoor decoration ceiling dampproof material and the preparation method are needed to be provided. Disclosure of Invention The invention provides a moistureproof material for an indoor decoration ceiling and a preparation method thereof, aiming at the defects of the prior art. The ceiling dampproof material has the advantages of light weight, easy coating, smooth coating, moisture absorption, moisture release and condensation prevention besides the waterproof and impervious properties of the traditional polymer cement-based waterproof material. In order to achieve the above object, a first aspect of the present invention provides an interior ceiling moisture-proof material, which comprises a liquid material and a powder material; The liquid material comprises acrylic emulsion, epoxy modified water-absorbent resin, water and a first auxiliary agent; the powder comprises heavy powder, light filler, a second auxiliary agent and optionally a humidity-adjusting functional filler. According to the present invention, preferably, The liquid comprises, by weight, 15-50 parts of acrylic emulsion, 10-35 parts of epoxy modified water-absorbent resin, 30-65 parts of water and 0.1-7 parts of first auxiliary agent; the powder comprises, by weight, 2-140 parts of heavy powder, 2-10 parts of light filler, 1-10 parts of humidity-adjusting functional filler and 0.1-2.5 parts of second auxiliary agent. According to the invention, the first auxiliary agent preferably comprises, by weight, 0.1-1 part of an antifoaming agent, 0.1-0.5 part of a bactericide, 0.1-1 part of a dry film mildew inhibitor, 0.1-1 part of a wetting dispersant and 1-3 parts of a first thickener. According to the present invention, preferab