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CN-122011880-A - Sound-insulation water-based paint for building floor and preparation method thereof

CN122011880ACN 122011880 ACN122011880 ACN 122011880ACN-122011880-A

Abstract

The invention relates to a sound insulation water-based paint for building floor slabs and a preparation method thereof, and belongs to the technical field of water-based paint. The preparation raw materials of the sound-insulating water-based paint comprise water-based epoxy resin, a water-based curing agent, sound-insulating filler A, sound-insulating filler B and an auxiliary agent, wherein the auxiliary agent is at least one of a film-forming auxiliary agent, a defoaming agent, a leveling agent and an anti-aging agent, ionic liquid, dipropylene glycol diacrylate and ethyl acrylate are crosslinked into a polymer layer through free radical polymerization reaction and are wrapped on the surfaces of hollow glass beads, so that the sound-insulating filler A is prepared, N-vinylimidazole is subjected to S N 2 nucleophilic substitution reaction with 2-bromoethanol, the product is subjected to reaction with 4-ethylphenyl isocyanate, so that the ionic liquid is prepared, and the epoxy silane coupling agent is used for modifying nanoclay, so that the sound-insulating filler B is prepared. The sound-insulation water-based paint solves the problem of uneven dispersion of hollow glass beads, and the improvement amount of the impact sound pressure level can reach 17.9dB through synergistic effect weighting.

Inventors

  • HE LUE
  • Sheng Yufu
  • LIU XIAOQUN
  • LU JIAHONG
  • HE QIJUN

Assignees

  • 广东新六维建筑装饰有限公司

Dates

Publication Date
20260512
Application Date
20260207

Claims (10)

  1. 1. The sound-insulating water-based paint for the building floor is characterized in that the preparation raw materials of the sound-insulating water-based paint comprise water-based epoxy resin, a water-based curing agent, a sound-insulating filler A and a sound-insulating filler B.
  2. 2. A sound-insulating water-based paint for building floor according to claim 1, wherein the weight ratio of the water-based epoxy resin, the water-based curing agent, the sound-insulating filler a and the sound-insulating filler B is 5.5-7.8:1.3-1.6:0.15-0.18:0.06-0.1.
  3. 3. The soundproof water-based paint for building floor according to claim 1, wherein the soundproof water-based paint further comprises an auxiliary agent, wherein the auxiliary agent is at least one of a film forming auxiliary agent, a defoaming agent, a leveling agent and an anti-aging agent.
  4. 4. A sound-insulating water-based paint for building floor according to claim 1, wherein the preparation method of the sound-insulating filler a comprises the following steps: S1, taking tetrahydrofuran, N-vinylimidazole and 2-bromoethanol, placing the tetrahydrofuran, the N-vinylimidazole and the 2-bromoethanol in a reaction container in a nitrogen atmosphere, starting stirring, keeping away from light, heating, performing a constant-temperature reaction A, cooling, adding 4-ethylphenyl isocyanate, performing a constant-temperature reaction B, adding a poor solvent, filtering, separating, washing a solid phase, and drying to obtain an ionic liquid; s2, taking ionic liquid, dipropylene glycol diacrylate, ethyl acrylate, hollow glass beads and aviation kerosene, placing the ionic liquid, the dipropylene glycol diacrylate, the ethyl acrylate, the hollow glass beads and the aviation kerosene in a reaction container in a nitrogen atmosphere, starting stirring, avoiding light, heating, mixing at constant temperature, adding azodiisobutyronitrile A, performing constant temperature reaction C, adding azodiisobutyronitrile B, performing constant temperature reaction D, filtering and separating, washing a solid phase, and drying.
  5. 5. The soundproofing aqueous coating for building floor according to claim 4, wherein in step S1, the use amount ratio of tetrahydrofuran, N-vinylimidazole and poor solvent is 88-110ml:7-13ml:680-810mL.
  6. 6. The soundproof water-based paint for building floor according to claim 4, wherein in the step S1, the temperature is raised to 65-71 ℃, the temperature is lowered to 25-34 ℃, the constant temperature reaction A is a constant temperature reaction under condensation reflux for 20-28h, and the constant temperature reaction B is a constant temperature reaction under condensation reflux for 9-10h.
  7. 7. The soundproofing water paint for building floor according to claim 4, wherein in step S2, the ionic liquid, dipropylene glycol diacrylate, ethyl acrylate, hollow glass microsphere, aviation kerosene, azobisisobutyronitrile a and azobisisobutyronitrile B are used in a ratio of 3.8-4.4g:1.5-1.8g:4-4.6g:12-14g:230-242ml:0.05-0.1g:0.05-0.1g.
  8. 8. The soundproof water-based paint for building floor according to claim 4, wherein in the step S2, the temperature is raised to 95-100 ℃, the constant temperature reaction C is a constant temperature reaction under condensation reflux for 20-40min, and the constant temperature reaction D is a constant temperature reaction under condensation reflux for 2-4h.
  9. 9. A sound-insulating water-based paint for building floor according to claim 1, wherein the preparation method of the sound-insulating filler B comprises the steps of: Toluene and nanoclay are taken and placed in a reaction vessel in a nitrogen atmosphere, stirring is started, ultrasonic dispersion is carried out, epoxy silane coupling agent is added, heating is carried out, reaction E is carried out at constant temperature, centrifugation is carried out, and solid phase is collected, washed and dried.
  10. 10. A method for preparing a sound-insulating aqueous coating for building floors according to any one of claims 1 to 9, characterized by comprising the steps of: Placing the water-based epoxy resin, the sound-insulating filler A and the sound-insulating filler B in a reaction tank, stirring and dispersing, adding an auxiliary agent, stirring and mixing, finally adding a water-based curing agent, and homogenizing.

Description

Sound-insulation water-based paint for building floor and preparation method thereof Technical Field The invention belongs to the technical field of water-based paint, and particularly relates to a sound-insulation water-based paint for building floor slabs and a preparation method thereof. Background Under the background of continuous development of building sound insulation technology, the sound insulation of building floors has become one of the key factors affecting the sound environment quality of houses and public buildings. Aiming at the problems of impact sound and structural sound transmission of building floor slabs, the adoption of a film coating mode for realizing sound insulation treatment is paid attention to because of flexible construction and small influence on the original structure, wherein the sound insulation coating based on an aqueous system is particularly in line with the trend of the current building materials towards the environment protection and low emission directions. The sound-insulating water-based paint at the present stage improves the sound-insulating performance by adding a light porous filler into a film-forming substance, wherein the hollow glass microspheres are widely selected as main sound-insulating fillers by virtue of the characteristics of low density, stable internal cavity structure and the like. However, in practical application, the interface matching between the hollow glass beads and the film forming substance, namely the resin material is not enough, the surface of the hollow glass beads is difficult to be sufficiently wetted, a stable and uniform dispersion state cannot be formed in a coating system, and local aggregation is easy to occur in the preparation, construction and curing processes. The problem of uneven dispersion can destroy the continuity and uniformity of the internal structure of the finally formed coating, so that the hollow glass beads are distributed in the membrane in an unbalanced manner, and further the sound insulation effect is obviously weakened. Moreover, the existing hollow glass microspheres have limitations in sound insulation performance in the coating, and the dispersion problem further amplifies the defects. Disclosure of Invention The invention aims to provide the sound-insulation water-based paint for the building floor, which has the effects of high sound insulation and noise reduction after being solidified into a coating, and also provides a preparation method of the sound-insulation water-based paint. In order to achieve the above purpose, the invention adopts the following technical scheme: according to the technical scheme I, the sound-insulation water-based paint for the building floor comprises water-based epoxy resin, a water-based curing agent, a sound-insulation filler A and a sound-insulation filler B. In some preferred embodiments, the weight ratio of the aqueous epoxy resin, the aqueous curing agent, the sound-deadening filler A, and the sound-deadening filler B is 5.5-7.8:1.3-1.6:0.15-0.18:0.06-0.1. In some preferred embodiments, the sound-insulating aqueous coating is prepared from a raw material further comprising an auxiliary agent. Preferably, the auxiliary agent is at least one of a film forming auxiliary agent, a defoaming agent, a leveling agent and an anti-aging agent. In some preferred embodiments, the method of preparing the soundproof filler a includes the steps of: S1, taking tetrahydrofuran, N-vinylimidazole and 2-bromoethanol, placing the tetrahydrofuran, the N-vinylimidazole and the 2-bromoethanol in a reaction container in a nitrogen atmosphere, starting stirring, keeping away from light, heating, performing a constant-temperature reaction A, cooling, adding 4-ethylphenyl isocyanate, performing a constant-temperature reaction B, adding a poor solvent, filtering, separating, washing a solid phase, and drying to obtain an ionic liquid; the imidazole ring nitrogen atom of N-vinyl imidazole and 2-bromoethanol firstly undergo S N nucleophilic substitution reaction to obtain alcoholic hydroxyl unsaturated ILs, after 4-ethylphenyl isocyanate is added, the alcoholic hydroxyl attacks isocyanate to directly obtain the benzene ring unsaturated ILs, namely the ionic liquid of the invention; S2, taking ionic liquid, dipropylene glycol diacrylate, ethyl acrylate, hollow glass beads and aviation kerosene, placing the ionic liquid, the dipropylene glycol diacrylate, the ethyl acrylate, the hollow glass beads and the aviation kerosene in a reaction container in a nitrogen atmosphere, starting stirring, avoiding light, heating, mixing at constant temperature, adding azodiisobutyronitrile A, reacting at constant temperature C, adding azodiisobutyronitrile B, reacting at constant temperature D, filtering and separating, washing a solid phase, and drying; The interior of the hollow glass microsphere is a closed air cavity, the exterior of the hollow glass microsphere is a rigid glass shell, the sound insulation