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CN-122011853-A - High-weather-resistance waterproof coating for industrial solid waste-based liquid coiled material

CN122011853ACN 122011853 ACN122011853 ACN 122011853ACN-122011853-A

Abstract

The invention belongs to the field of building waterproof materials, and provides a high-weather-resistance industrial solid waste-based liquid coiled material waterproof coating which comprises, by weight, 20-30% of acrylic emulsion, 25-32% of composite industrial solid waste powder, 20-25% of anionic emulsified asphalt, 2-10% of water, 0.5-1.5% of a dispersing agent, 0.5-1% of an antioxidant and 0.1-0.5% of a thickening agent, wherein the composite industrial solid waste powder comprises, by weight, 20-30 parts of slag micropowder, 15-25 parts of steel slag micropowder, 15-25 parts of modified fly ash, 10-20 parts of modified red mud and 10-20 parts of modified carbide slag, and the fineness of the composite industrial solid waste powder is 1000-1250 meshes. The invention has the advantages and effects of low cost, environmental protection, simple and convenient process and balanced comprehensive performance.

Inventors

  • WANG JIAN
  • ZHANG TAO
  • Bu Yongchun
  • ZHANG MENGXIA
  • LI YONGSONG

Assignees

  • 湖北九阳防水材料科技有限公司

Dates

Publication Date
20260512
Application Date
20260204

Claims (7)

  1. 1. The waterproof coating for the high-weatherability industrial solid waste-based liquid coiled material is characterized by comprising, by weight, 20% -30% of acrylic emulsion, 25% -32% of composite industrial solid waste powder, 20% -25% of anionic emulsified asphalt, 2% -10% of water, 0.5% -1.5% of dispersing agent, 0.5% -1% of antioxidant and 0.1% -0.5% of thickening agent; The composite industrial solid waste powder comprises, by weight, 20-30 parts of slag micropowder, 15-25 parts of steel slag micropowder, 15-25 parts of modified fly ash, 10-20 parts of modified red mud and 10-20 parts of modified carbide slag, wherein the fineness of the composite industrial solid waste powder is 1000-1250 meshes.
  2. 2. The high-weather-resistance industrial solid waste-based liquid coiled material waterproof coating material according to claim 1, wherein the composite industrial solid waste powder is prepared by the following method: S1, raw material pretreatment, namely washing red mud, dealkalizing, drying, calcining carbide slag at 600-650 ℃ for 2 hours, crushing and ball-milling slag, steel slag, fly ash, red mud and carbide slag respectively to 1000-1250 meshes to obtain slag micro powder, steel slag micro powder and fly ash micro powder, red mud micro powder and carbide slag micro powder; S2, modifying, namely hydrolyzing a silane coupling agent in an ethanol water solution with the pH value of 4.0-5.5, adding fly ash micropowder, stirring and reacting for 1.5-3.0h at the temperature of 60-80 ℃, separating and drying to obtain modified fly ash, wherein the adding amount of the silane coupling agent is 0.3-1% of the mass of the fly ash micropowder, firstly hydrolyzing the ethanol water solution of the silane coupling agent, adding preheated red mud micropowder, mixing and reacting at the temperature of 60-80 ℃, adding an ethanol solution of stearic acid, continuously mixing and coating at the same temperature, and drying to obtain modified red mud with the total content of Fe 2 O 3 and TiO 2 being more than or equal to 30%, wherein the adding amount of the silane coupling agent and stearic acid is 0.4-1% of the mass of the red mud micropowder, the mass ratio of the silane coupling agent and the stearic acid is 2:1, adding carbide slag micropowder into a high-speed heating mixer, stirring, slowly adding calcium stearate, stirring for 1-1.5 h at the temperature under high-speed shearing, and cooling to room temperature to obtain modified carbide slag with the hydrophobicity ratio being more than or equal to 95%. The modified carbide slag with Ca (OH) 2 content more than or equal to 85% is obtained by modifying calcium stearate, wherein the addition amount of the calcium stearate is 0.3% -1% of the mass of the carbide slag micropowder. S3, compounding, namely mixing the pretreated slag micropowder and steel slag micropowder with modified fly ash, modified red mud and modified carbide slag in proportion to obtain the composite industrial solid waste powder.
  3. 3. The high weather resistance industrial solid waste-based liquid coiled material waterproof coating according to claim 1, wherein the solid content of the acrylic emulsion is 55wt% and the pH is 7-8.
  4. 4. The waterproof coating for the high-weather-resistance industrial solid waste-based liquid coiled material, which is characterized in that the viscosity of the anionic emulsified asphalt is 10-15s, and the solid content is more than or equal to 50%.
  5. 5. The waterproof coating for the high-weather-resistance industrial solid waste-based liquid coiled material, which is characterized in that the activity index (7 d) of slag micropowder is more than or equal to 75 percent, and the free CaO content is less than or equal to 0.5 percent.
  6. 6. The high-weather-resistance industrial solid waste-based liquid coiled material waterproof coating according to claim 1, wherein the thickener is polyurethane thickener, the antioxidant is hindered phenol 1076 and thio ester DLTP, and the dispersant is polycarboxylate sodium salt type dispersant.
  7. 7. A method for preparing the high-weather-resistance industrial solid waste-based liquid coiled material waterproof coating according to any one of claims 1 to 6, which is characterized by comprising the following steps: (1) Adding water, a dispersing agent and a thickening agent into a reaction kettle, and stirring at a rotating speed of 500-800r/min for 15-20min until the water, the dispersing agent and the thickening agent are completely dissolved; (2) Regulating the rotating speed to 1000-1500r/min, slowly adding the acrylic emulsion, and stirring for 25-30min to form a uniform emulsion system; (3) The rotational speed is kept unchanged, composite industrial solid waste powder is added in batches, the adding amount of each batch is not more than 25% of the total powder weight, each batch is separated by 7-10min, and stirring is continued for 35-40min after all the adding; (4) And regulating the rotating speed to 800-1000r/min, adding the anionic emulsified asphalt, stirring for 20-25min until the system forms uniform viscous liquid, and discharging to obtain the high-weather-resistance industrial solid waste base liquid coiled material waterproof coating.

Description

High-weather-resistance waterproof coating for industrial solid waste-based liquid coiled material Technical Field The invention relates to the technical field of building waterproof materials, in particular to a high-weather-resistance industrial solid waste base liquid coiled material waterproof coating. Background As a single-component water-based environment-friendly product, the liquid coiled material waterproof coating has the advantages of convenient construction, suitability for complex basal planes, no seam after solidification and the like, and is widely applied to construction, roads, water conservancy projects and the like. The exposed liquid coiled material waterproof coating needs to bear the severe environmental effects of ultraviolet irradiation, high and low temperature circulation, rain wash, acid rain corrosion and the like for a long time, so that higher requirements on weather resistance, ageing resistance, mechanical strength and corrosion resistance are provided. At present, the traditional liquid coiled material waterproof coating powder adopts natural mineral fillers such as heavy calcium carbonate, talcum powder and the like, has higher cost and limited effect in the aspect of weather resistance improvement. Meanwhile, the industrial solid waste in China has huge discharge amount, and the stockpiling of slag and steel slag in the metallurgical industry, fly ash in the electric industry, red mud and carbide slag in the chemical industry and other solid waste not only occupies a large amount of land, but also causes environmental pollution. Although some patents try to use single industrial solid waste for waterproof paint, for example, the patent application of the invention with publication number of CN121064689A discloses weather-proof heat-insulation waterproof paint for an outer wall and a preparation method thereof, the combination of modified acrylic ester polymer emulsion and composite filler forms a multi-dimensional synergistic improvement of the coating performance, the defects of the outer wall paint in weather resistance, heat insulation and waterproofness are overcome, and the paint with high weather resistance, low heat conductivity and good waterproof performance is realized. The scheme has the following defects that firstly, the scheme depends on high-value raw materials such as cardanol, a piperazinyl silane coupling agent, silica aerogel and the like, the raw material cost is high, the preparation process is complex, molecular distillation, pre-emulsification, two-step polymerization and the like are involved, the product cost is high, the scheme is unfavorable for large-scale application in common industry and civil buildings, and secondly, the scheme has insufficient environmental protection and weak sustainability, and although partial fly ash floating beads are used, the whole formula still takes chemical synthetic raw materials as the main material, has limited capability of absorbing solid wastes in bulk industry and does not accord with the concepts of resource circulation and green building materials. Disclosure of Invention The invention aims to provide the high-weather-resistance industrial solid waste base liquid coiled material waterproof coating which has the effects of solving the technical problems, along with low cost, environmental friendliness, simple and convenient process and balanced comprehensive performance. The technical aim of the invention is realized by the following technical scheme that the waterproof coating for the high weather resistance industrial solid waste base liquid coiled material comprises, by weight, 20% -30% of acrylic emulsion, 25% -32% of composite industrial solid waste powder, 20% -25% of anionic emulsified asphalt, 2% -10% of water, 0.5% -1.5% of dispersing agent, 0.5% -1% of antioxidant and 0.1% -0.5% of thickening agent; The composite industrial solid waste powder comprises, by weight, 20-30 parts of slag micropowder, 15-25 parts of steel slag micropowder, 15-25 parts of modified fly ash, 10-20 parts of modified red mud and 10-20 parts of modified carbide slag, wherein the fineness of the composite industrial solid waste powder is 1000-1250 meshes. The invention is further provided that the composite industrial solid waste powder is prepared by the following method: S1, raw material pretreatment, namely washing red mud, dealkalizing, drying, calcining carbide slag at 600-650 ℃ for 2 hours, crushing and ball-milling slag, steel slag, fly ash, red mud and carbide slag respectively to 1000-1250 meshes to obtain slag micro powder, steel slag micro powder and fly ash micro powder, red mud micro powder and carbide slag micro powder; S2, modifying, namely hydrolyzing a silane coupling agent in an ethanol water solution with the pH value of 4.0-5.5, adding fly ash micropowder, stirring and reacting for 1.5-3.0h at the temperature of 60-80 ℃, separating and drying to obtain modified fly ash, wherein the adding amount of the s