CN115109486A - Preparation method of weather-resistant asphalt-based waterproof coating and application of weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing - Google Patents

Preparation method of weather-resistant asphalt-based waterproof coating and application of weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing Download PDF

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CN115109486A
CN115109486A CN202210782741.4A CN202210782741A CN115109486A CN 115109486 A CN115109486 A CN 115109486A CN 202210782741 A CN202210782741 A CN 202210782741A CN 115109486 A CN115109486 A CN 115109486A
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asphalt
weather
parts
waterproof coating
based waterproof
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CN115109486B (en
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耿融
李晴龙
马立博
高周周
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Yuzhongqing Waterproof Technology Group Co ltd
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Yuzhongqing Waterproof Technology Group Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04Homopolymers or copolymers of esters
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D195/00Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/63Additives non-macromolecular organic
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/65Additives macromolecular
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/70Additives characterised by shape, e.g. fibres, flakes or microspheres
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0281Repairing or restoring roofing or roof covering
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/221Oxides; Hydroxides of metals of rare earth metal
    • C08K2003/2213Oxides; Hydroxides of metals of rare earth metal of cerium
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2201/00Properties
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/254Roof garden systems; Roof coverings with high solar reflectance

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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Abstract

The invention discloses a preparation method of a weather-resistant asphalt-based waterproof coating and application of the weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing, wherein the weather-resistant asphalt-based waterproof coating is prepared from the following raw materials: slow-breaking modified anionic emulsified asphalt, modified emulsion, weather-resistant filler, dispersant, defoamer, preservative, rheology modifier, composite anti-aging agent and water. Wherein, the asphalt anti-aging agent prepared from the polyphenol compound, the fatty alcohol, the petroleum resin, the nano cerium oxide and the ferrous complex is melted and evenly blended with the asphalt, and then the modified emulsified asphalt is obtained through an emulsification process. The weather-resistant asphalt-based waterproof coating prepared by combining the construction method of coating one by two or coating two by three is directly roll-coated or spray-coated on the old asphalt-based waterproof layer of the roofing to be repaired, has good bonding effect with the base surface, especially excellent weather resistance, can be cold-constructed in the whole process without being dismantled and being provided with a protective layer by matching with the exposed self-adhesive asphalt-based waterproof coating coil, and is especially suitable for being directly used on the old waterproof layer when the old small-area roofing is renovated.

Description

Preparation method of weather-resistant asphalt-based waterproof coating and application of weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing
Technical Field
The invention relates to an asphalt-based waterproof coating and a preparation method thereof, in particular to a preparation method of a weather-resistant asphalt-based waterproof coating and application of the weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing.
Background
At present, in the field of roof repair, due to the practical situation and economic benefit, the asphalt-based material which is widely used is still the asphalt-based material, and mainly the combination of non-cured asphalt waterproof coating and asphalt-based coiled material. However, due to the diversity of roof structures, shapes, application scenes and the like, the conventional waterproof products cannot meet all the fields of roof repair. The conventional original waterproof layer of the repaired roof is difficult to completely remove, most of the conventional waterproof layers are damaged and seriously stained, and the conventional waterproof layer is located in old districts, so that open fire cannot be used and the repair materials are required to be light and convenient. The use environment determines that the waterproof material for roof repair needs to have wide adaptability to different base planes and excellent aging resistance, so that the development of the weather-resistant asphalt-based waterproof coating capable of being directly used on the surface of the old asphalt coiled material and the application of the weather-resistant asphalt-based waterproof coating to the roof repair have important practical significance aiming at specific application scenes.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of a weather-resistant asphalt-based waterproof coating and application of the weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing. The key point of the invention is that aiming at the aging of asphalt which is a comprehensive result of a plurality of reactions including oxidation, volatilization, adsorption, polymerization, agglomeration, fracture and the like, wherein the main asphalt oxidation means that hydrogen of light components in the asphalt is removed by oxygen, the asphalt is subjected to dehydrogenation reaction or oxygen absorption by the asphalt to perform oxidation reaction to produce an aging mechanism of asphaltene, water-soluble salt and acid, the asphalt anti-aging agent prepared by self selection can inhibit dehydrogenation because of being alkaline, and hydrogen atoms provided by polyphenols are combined with free radicals generated by automatic oxidation of the asphalt to form stable and low-energy antioxidant free radicals, so that the oxidation reaction of the asphalt can not be propagated any more to achieve the purpose of oxidation resistance, the modified anion emulsified asphalt has good weather resistance, and the prepared slow-cracking modified anion emulsified asphalt is combined with the excellent weather resistance of the aqueous antioxidant, the ultraviolet absorbent and the modified emulsion, through the compounding of the additives and the weather resistance of each component, the prepared asphalt-based waterproof coating has excellent weather resistance, the service life of the asphalt-based waterproof coating is greatly prolonged, when the asphalt-based waterproof coating is applied to repairing roofs, the bonding effect with the old asphalt waterproof layer of the base surface is good, and the matched exposed self-adhesive asphalt-based waterproof coating coiled material can be subjected to whole-course cold construction, is free from being dismantled and a protective layer is not required to be applied to the old waterproof layer directly during the renovation of old small-area roofs.
In order to achieve the purpose, the invention adopts the technical scheme that:
the preparation method of the weather-resistant asphalt-based waterproof coating comprises the following steps: 30-50 parts of slow-breaking modified anionic emulsified asphalt, 45-60 parts of modified emulsion, 0.1-0.5 part of dispersing agent, 0.1-0.5 part of defoaming agent, 0.01-0.03 part of preservative, 5-10 parts of weather-resistant filler, 3-5 parts of composite anti-aging agent, 0.5-1.5 parts of thickening agent and 3-5 parts of water. Firstly, adding 30-40 parts of modified emulsion No. 1 pure acrylic emulsion, 0.1-0.5 part of dispersing agent, 0.1-0.5 part of defoaming agent and 0.01-0.03 part of preservative into a stirring tank, stirring for 10-20 min at 600-800 r/min, adding 5-10 parts of weather-resistant filler, stirring for 20-30 min, adding 30-50 parts of slow-breaking modified anionic emulsified asphalt and 15-20 parts of modified emulsion No. 2 neoprene latex, continuing to stir for 20-40 min, adding 3-5 parts of composite anti-aging agent, stirring for 20-40 min, finally adding mixed dispersion liquid consisting of 0.4-1 part of cellulose ether thickening agent and 3-5 parts of water, continuing to add 0.1-0.5 part of polyurethane thickening agent after dispersing and stirring until the materials are uniform and free of particle sensation, filtering after dispersing and stirring for 30min, and obtaining the weather-resistant asphalt-based waterproof coating.
The coating is applied to the roof repairing waterproofing, and the coating is optimally combined with the exposed self-adhesive asphalt-based waterproofing coiled material. Firstly, the coating is directly roll-coated or spray-coated on an old asphalt-based waterproof layer or a cement base surface of a to-be-repaired roof according to a construction method of two-coating one-cloth or three-coating two-cloth, and then the exposed self-adhesive asphalt-based waterproof coating coiled material is matched, so that the whole process can be cold-constructed, the dismantling and the protective layer are avoided, and the coating is particularly suitable for being directly used on the old waterproof layer during the renovation of the old residential area roof.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating to roof renovation and waterproofing are characterized in that the slow-breaking modified anionic emulsified asphalt is prepared by melting and uniformly blending an asphalt anti-aging agent and Zhonghai 90 asphalt through a conventional emulsification process.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the preparation method of the asphalt anti-aging agent are as follows by weight percent: 8-12 parts of propyl gallate, 3-6 parts of n-octanol, 5-10 parts of nano cerium oxide, 10-15 parts of C9 hydrogenated petroleum resin and 60-70 parts of ferrous complex. Firstly, adding propyl gallate and C9 hydrogenated petroleum resin into a stirring tank, heating to 145-150 ℃, timing, preserving heat, stirring for 20-30 min, cooling to 120-125 ℃, sequentially adding n-octanol and nano cerium oxide, stirring for 15-20 min, then adding a ferrous complex, stirring at a high speed (the rotation speed is 800-1200RPM) for 30-40 min, and discharging.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing are characterized in that the addition amount of the asphalt anti-aging agent applied to modified asphalt is 5.0-10%.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating to roofing repair and waterproofing are implemented, wherein the composite anti-aging agent is a mixture of SD1688 water-based antioxidant emulsion and 1130 water-based ultraviolet absorber, and the mass ratio of the SD1688 water-based antioxidant emulsion to the 1130 water-based ultraviolet absorber is 1: 1.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating in roofing renovation waterproofing are implemented by using 250HBR as a cellulose ether thickening agent and OPTIFLO-H3300VF as a polyurethane thickening agent, and the adding process and the adding amount are as described above.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating to roofing renovation waterproofing are characterized in that the modified emulsion is a composite modified system consisting of neoprene latex and pure acrylic emulsion, and the mass ratio of the neoprene latex to the pure acrylic emulsion is 1: 2.
Preferably, the preparation method of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing are characterized in that an exposed self-adhesive asphalt-based waterproof coiled material is adopted to be combined with the prepared coating when the weather-resistant asphalt-based waterproof coating is applied to roof repairing and waterproofing; the exposed self-adhesive asphalt-based waterproof coiled material is self-adhesive on a single surface, the surface layer is coated with a fluorine plastic film, and the thickness of the film is 0.10-0.15 mm.
The invention selects slow-breaking modified anionic emulsified asphalt, which has good compatibility with a system and excellent weather resistance, and combines the water-based antioxidant and the ultraviolet absorbent in the composite aging agent and the excellent weather resistance of the modified emulsified asphalt, through the compounding of the additives and the weather resistance of each component, the prepared asphalt-based waterproof coating has excellent weather resistance, the service life of the waterproof coating is greatly prolonged, when the waterproof coating is applied to repairing roofs, the bonding effect with an old asphalt waterproof layer of a base surface is good, and the matched exposed self-adhesive asphalt-based waterproof coating coiled material can be cold-constructed in the whole process, is free from being dismantled and protected, and is particularly suitable for being directly used on the old waterproof layer when the old small-area roof is renovated.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but not to limit the scope of the present invention.
Example 1:
a preparation method of a weather-resistant asphalt-based waterproof coating and a waterproof application thereof in roof repairing comprises the following steps:
preparing an asphalt anti-aging agent (in parts by mass):
adding 10 parts of propyl gallate and 15 parts of C9 hydrogenated petroleum resin into a stirring tank, heating to 145-150 ℃, timing, preserving heat, stirring for 20-30 min, cooling to 120-125 ℃, sequentially adding 3 parts of n-octanol and 5 parts of nano cerium oxide, stirring for 15-20 min, adding 65 parts of ferrous complex, stirring at high speed (the rotation speed of 800-1200RPM) for 30-40 min, and discharging.
Preparing slow-cracking modified anionic emulsified asphalt (in parts by mass):
a. firstly, adding 100 parts of Zhonghai 90# asphalt into a kettle, stirring and heating to 150 ℃, adding 5 parts of the self-made asphalt anti-aging agent, and stirring for 30min for later use;
b. meanwhile, 100 parts of tap water and 4 parts of slow-breaking emulsifier RC-806 are sequentially added into the other kettle, the pH value is adjusted to 10.6-11.6 by using 40% sodium hydroxide solution, and the mixture is stirred and heated to 55 ℃ to prepare soap liquid;
c. and (3) feeding the two into a colloid mill, setting the flow ratio of the soap liquid to the asphalt to be 2.5:3.5, and cooling to obtain the emulsified asphalt with the solid content of 58-60%.
Preparing the weather-resistant asphalt-based waterproof coating (in parts by mass): firstly, adding 40 parts of pure acrylic emulsion, 0.1 part of dispersant BYK23160, 0.1 part of defoamer ST2438 and 0.01 part of preservative Hanning 616 into a stirring tank, stirring for 10-20 min at a speed of 600-800 r/min, adding 5 parts of sheet sericite powder, stirring for 20-30 min, adding 30 parts of slow-breaking modified anionic emulsified asphalt and 20 parts of neoprene latex, continuing to stir for 20-40 min, adding 1.5 parts of SD1688 aqueous antioxidant and 1.5 parts of 1130 ultraviolet absorbent, stirring for 20-40 min, finally adding 1 part of mixed dispersion liquid consisting of 250HBR hydroxyethyl cellulose and 5 parts of water, continuing to add 0.1 part of OPTIFLO-H3300VF after dispersing and stirring for 30min, and filtering to obtain the weather-resistant asphalt-based waterproof coating;
when the coating is applied to the waterproof repair of the roof, the coating is directly roll-coated or spray-coated on an old asphalt-based waterproof layer or a cement base surface of the roof to be repaired according to a construction method of coating one by two or coating two by three, and then the exposed self-adhesive asphalt-based waterproof coating coiled material is matched, so that the coating can be cold-constructed in the whole process, is free from being dismantled and a protective layer is not required to be punched, and is particularly suitable for being directly used on the old waterproof layer when the old residential area roof is repaired.
The exposed self-adhesive asphalt-based waterproof coating coiled material is self-adhesive on a single surface and comprises an isolation layer, a modified asphalt bonding layer and a fluoroplastic film reinforcing layer. The fluoroplastic film of the surface layer coating film had a thickness of 0.10 mm.
Example 2:
a preparation method of a weather-resistant asphalt-based waterproof coating and a waterproof application thereof in roof repairing comprises the following steps:
preparing an asphalt anti-aging agent (in parts by mass):
firstly adding 12 parts of propyl gallate and 12 parts of C9 hydrogenated petroleum resin into a stirring tank, heating to 145-150 ℃, timing, keeping warm, stirring for 20-30 min, cooling to 120-125 ℃, sequentially adding 5 parts of n-octanol and 10 parts of nano cerium oxide, stirring for 15-20 min, then adding 60 parts of ferrous complex, stirring at high speed (the rotation speed is 800-1200RPM) for 30-40 min, and discharging.
Preparing slow-cracking modified anionic emulsified asphalt (in parts by mass):
a. firstly, adding 100 parts of Zhonghai 90# asphalt into a kettle, stirring and heating to 150 ℃, adding 8 parts of the self-made asphalt anti-aging agent, and stirring for 30min for later use;
b. meanwhile, 100 parts of tap water and 4 parts of slow-breaking emulsifier RC-806 are sequentially added into the other kettle, the pH value is adjusted to 10.6-11.6 by using 40% sodium hydroxide solution, and the mixture is stirred and heated to 55 ℃ to prepare soap liquid;
c. and (3) feeding the two into a colloid mill, setting the flow ratio of the soap liquid to the asphalt to be 2.5:3.5, and cooling to obtain the emulsified asphalt with the solid content of 58-60%.
Preparing the weather-resistant asphalt-based waterproof coating (in parts by mass): firstly, adding 36 parts of pure acrylic emulsion, 0.3 part of dispersant BYK23160, 0.3 part of defoamer ST2438 and 0.02 part of preservative Hanning 616 into a stirring tank, stirring for 10-20 min at a speed of 600-800 r/min, adding 8 parts of sheet sericite powder, stirring for 20-30 min, adding 40 parts of slow-breaking modified anionic emulsified asphalt and 18 parts of neoprene latex, continuing to stir for 20-40 min, adding 2 parts of SD1688 aqueous antioxidant and 2 parts of 1130 ultraviolet absorbent, stirring for 20-40 min, finally adding 0.6 part of mixed dispersion liquid consisting of 250HBR hydroxyethyl cellulose and 4 parts of water, continuing to add 0.3 part of OPTIFLO-H3300VF after dispersing and stirring for 30min, and filtering to obtain the weather-resistant asphalt-based waterproof coating;
when the coating is applied to the waterproof repair of the roof, the coating is directly roll-coated or spray-coated on an old asphalt-based waterproof layer or a cement base surface of the roof to be repaired according to a construction method of coating one by two or coating two by three, and then the exposed self-adhesive asphalt-based waterproof coating coiled material is matched, so that the coating can be cold-constructed in the whole process, is free from being dismantled and a protective layer is not required to be punched, and is particularly suitable for being directly used on the old waterproof layer when the old residential area roof is repaired.
The exposed self-adhesive asphalt-based waterproof coating coiled material is self-adhesive on a single surface and comprises an isolation layer, a modified asphalt bonding layer and a fluoroplastic film reinforcing layer. The fluoroplastic film of the surface layer coating film had a thickness of 0.12 mm.
Example 3:
a preparation method of a weather-resistant asphalt-based waterproof coating and a waterproof application in roof repair comprise the following steps:
preparing an asphalt anti-aging agent (in parts by mass):
adding 8 parts of propyl gallate and 10 parts of C9 hydrogenated petroleum resin into a stirring tank, heating to 145-150 ℃, timing, preserving heat, stirring for 20-30 min, cooling to 120-125 ℃, sequentially adding 6 parts of n-octanol and 8 parts of nano cerium oxide, stirring for 15-20 min, adding 70 parts of ferrous complex, stirring at high speed (the rotation speed of 800-1200RPM) for 30-40 min, and discharging.
Preparing slow-cracking modified anionic emulsified asphalt (in parts by mass):
a. firstly, adding 100 parts of Zhonghai 90# asphalt into a kettle, stirring and heating to 150 ℃, adding 10 parts of the self-made asphalt anti-aging agent, and stirring for 30min for later use;
b. meanwhile, 100 parts of tap water and 4 parts of slow-breaking emulsifier RC-806 are sequentially added into the other kettle, the pH value is adjusted to 10.6-11.6 by using 40% sodium hydroxide solution, and the mixture is stirred and heated to 55 ℃ to prepare soap liquid;
c. and (3) feeding the two into a colloid mill, setting the flow ratio of the soap liquid to the asphalt to be 2.5:3.5, and cooling to obtain the emulsified asphalt with the solid content of 58-60%.
Preparing the weather-resistant asphalt-based waterproof coating (in parts by mass): firstly, adding 30 parts of pure acrylic emulsion, 0.5 part of dispersant BYK23160, 0.5 part of defoamer ST2438 and 0.03 part of preservative Hanning 616 into a stirring tank, stirring for 10-20 min at 600-800 r/min, adding 10 parts of sheet sericite powder, stirring for 20-30 min, adding 50 parts of slow-breaking modified anionic emulsified asphalt and 15 parts of neoprene latex, continuing to stir for 20-40 min, adding 2.5 parts of SD1688 aqueous antioxidant and 2.5 parts of 1130 ultraviolet absorbent, stirring for 20-40 min, finally adding 0.4 part of mixed dispersion liquid consisting of 250HBR hydroxyethyl cellulose and 3 parts of water, continuing to add 0.5 part of OPTIFLO-H3300VF after dispersing and stirring until the mixture is uniform and free of particle sensation, and filtering after dispersing and stirring for 30min to obtain the weather-resistant asphalt-based waterproof paint;
when the coating is applied to the waterproof repair of the roof, the coating is directly roll-coated or spray-coated on an old asphalt-based waterproof layer or a cement base surface of the roof to be repaired according to a construction method of coating one by two or coating two by three, and then the exposed self-adhesive asphalt-based waterproof coating coiled material is matched, so that the coating can be cold-constructed in the whole process, is free from being dismantled and a protective layer is not required to be punched, and is particularly suitable for being directly used on the old waterproof layer when the old residential area roof is repaired.
The exposed self-adhesive asphalt-based waterproof coating coiled material is self-adhesive on a single surface and comprises an isolation layer, a modified asphalt bonding layer and a fluoroplastic film reinforcing layer. The fluoroplastic film of the surface layer coating film had a thickness of 0.15 mm.
Example 4:
a preparation method of a weather-resistant asphalt-based waterproof coating and a waterproof application thereof in roof repairing comprises the following steps:
preparing an asphalt anti-aging agent (in parts by mass):
adding 11 parts of propyl gallate and 14 parts of C9 hydrogenated petroleum resin into a stirring tank, heating to 145-150 ℃, keeping the temperature for stirring for 20-30 min while timing, cooling to 120-125 ℃, sequentially adding 4 parts of n-octanol and 9 parts of nano cerium oxide, stirring for 15-20 min, adding 64 parts of ferrous complex, stirring at high speed (the rotation speed of 800-1200RPM) for 30-40 min, and discharging.
Preparing slow-cracking modified anionic emulsified asphalt (in parts by mass):
a. firstly, adding 100 parts of Zhonghai 90# asphalt into a kettle, stirring and heating to 150 ℃, adding 9 parts of the self-made asphalt anti-aging agent, and stirring for 30min for later use;
b. meanwhile, 100 parts of tap water and 4 parts of slow-breaking emulsifier RC-806 are sequentially added into the other kettle, the pH value is adjusted to 10.6-11.6 by using 40% sodium hydroxide solution, and the mixture is stirred and heated to 55 ℃ to prepare soap liquid;
c. and (3) feeding the two into a colloid mill, setting the flow ratio of the soap liquid to the asphalt to be 2.5:3.5, and cooling to obtain the emulsified asphalt with the solid content of 58-60%.
Preparing the weather-resistant asphalt-based waterproof coating (in parts by mass): firstly, adding 32 parts of pure acrylic emulsion, 0.4 part of dispersant BYK23160, 0.4 part of defoamer ST2438 and 0.02 part of preservative Hanning 616 into a stirring tank, stirring for 10-20 min at a speed of 600-800 r/min, adding 5 parts of sheet sericite powder, stirring for 20-30 min, adding 45 parts of slow-breaking modified anionic emulsified asphalt and 16 parts of neoprene latex, continuing to stir for 20-40 min, adding 1.8 parts of SD1688 aqueous antioxidant and 1.8 parts of 1130 ultraviolet absorbent, stirring for 20-40 min, finally adding 0.8 part of mixed dispersion liquid consisting of 250HBR hydroxyethyl cellulose and 4 parts of water, continuing to add 0.2 part of OPTIFLO-H3300VF after dispersing and stirring until the mixture is uniform and free of particle sensation, and filtering after dispersing and stirring for 30min to obtain the weather-resistant asphalt-based waterproof paint;
when the coating is applied to the waterproof repair of the roof, the coating is directly roll-coated or spray-coated on an old asphalt-based waterproof layer or a cement base surface of the roof to be repaired according to a construction method of coating one by two or coating two by three, and then the exposed self-adhesive asphalt-based waterproof coating coiled material is matched, so that the coating can be cold-constructed in the whole process, is free from being dismantled and a protective layer is not required to be punched, and is particularly suitable for being directly used on the old waterproof layer when the old residential area roof is repaired.
The exposed self-adhesive asphalt-based waterproof coating coiled material is self-adhesive on a single surface and comprises an isolation layer, a modified asphalt bonding layer and a fluoroplastic film reinforcing layer. The fluoroplastic film of the surface layer coating film had a thickness of 0.14 mm.
Comparative example 1: a method for preparing a weather-resistant asphalt-based waterproof coating and application thereof to roofing repair and waterproofing, wherein the system does not contain a self-made asphalt anti-aging agent, and the other steps are the same as those in example 1. Tests show that the prepared asphalt-based waterproof coating has poor weather resistance, obvious fine cracks appear on the surface after the asphalt-based waterproof coating is exposed for more than 1 month, and the peeling strength of the asphalt-based waterproof coating and a compounded coiled material is obviously reduced.
Comparative example 2: the preparation method of the weather-resistant asphalt-based waterproof coating and the application thereof in roof repairing and waterproofing are the same as those of the example 1 except that the addition amounts of the modified latex and the slow-breaking modified anionic emulsified asphalt are adjusted. Tests show that the prepared asphalt-based waterproof coating is poor in bonding with an old asphalt waterproof layer of a base surface, cannot form full adhesion with the old base surface, and has a large water channeling hidden danger.
Compared with the comparative example 1, the comparison of the examples 1 to 4 shows that the addition of the self-made asphalt anti-aging agent to the asphalt after modification can obviously improve the weather resistance of the prepared asphalt-based coating, and greatly prolong the service life of the coating when the coating is applied to the waterproofing of roof repairing.
The comparison between examples 1-4 and comparative example 2 shows that the use amounts of the matched modified latex and the slow-breaking modified anionic emulsified asphalt can ensure the bonding effect with the base surface of the waste coiled material, and when the modified latex and the slow-breaking modified anionic emulsified asphalt are used in combination with coiled materials and applied to roof repairing and waterproofing, the excellent composite waterproof effect is ensured.
In conclusion, the preparation of the weather-resistant asphalt-based waterproof coating and the application of the weather-resistant asphalt-based waterproof coating to roofing renovation waterproofing are carried out, the slow-breaking modified emulsified asphalt is prepared by starting from an asphalt-based material aging mechanism, the water-based antioxidant in the composite aging agent, the ultraviolet absorbent and the excellent weather resistance of the modified emulsion are combined, the prepared asphalt-based waterproof coating has excellent weather resistance and the service life of the asphalt-based waterproof coating is greatly prolonged by compounding the additives and the weather resistance of each component, and when the weather-resistant asphalt-based waterproof coating is applied to the roofing renovation, the adhesion effect of the asphalt-based waterproof coating and a base surface old asphalt waterproof layer is good.
Attached table 1 a preparation method of a weather-resistant asphalt-based waterproof coating and application thereof to roof repairing waterproofing (in parts by weight):
Figure BDA0003720197210000131
attached table 2 a preparation method of a weather-resistant asphalt-based waterproof coating and application thereof to roofing repair waterproofing (in parts by weight):
Figure BDA0003720197210000141

Claims (10)

1. a preparation method of a weather-resistant asphalt-based waterproof coating is characterized by comprising the following raw materials in percentage by weight: 30-50 parts of slow-breaking modified anionic emulsified asphalt, 45-60 parts of modified emulsion, 0.1-0.5 part of dispersing agent, 0.1-0.5 part of defoaming agent, 0.01-0.03 part of preservative, 5-10 parts of weather-resistant filler, 3-5 parts of composite anti-aging agent, 0.5-1.5 parts of thickening agent and 3-5 parts of water;
the preparation method comprises the following steps: firstly, adding 30-40 parts of modified emulsion No. 1 pure acrylic emulsion, 0.1-0.5 part of dispersing agent, 0.1-0.5 part of defoaming agent and 0.01-0.03 part of preservative into a stirring tank, stirring for 10-20 min at 600-800 r/min, adding 5-10 parts of weather-resistant filler, stirring for 20-30 min, adding 30-50 parts of slow-breaking modified anionic emulsified asphalt and 15-20 parts of modified emulsion No. 2 neoprene latex, continuing to stir for 20-40 min, adding 3-5 parts of composite anti-aging agent, stirring for 20-40 min, finally adding mixed dispersion liquid consisting of 0.4-1 part of cellulose ether thickening agent and 3-5 parts of water, continuing to add 0.1-0.5 part of polyurethane thickening agent after dispersing and stirring until the materials are uniform and free of particle sensation, filtering after dispersing and stirring for 30min, and obtaining the weather-resistant asphalt-based waterproof coating.
2. The preparation method of the weather-resistant asphalt-based waterproof coating material according to claim 1, wherein the slow-breaking modified anionic emulsified asphalt is prepared by melting and uniformly blending an asphalt anti-aging agent and Zhonghai 90 asphalt through a conventional emulsification process.
3. The preparation method of the weather-resistant asphalt-based waterproof coating material according to claim 1, wherein the preparation method of the asphalt anti-aging agent comprises the following steps of: 8-12 parts of propyl gallate, 3-6 parts of n-octanol, 5-10 parts of nano cerium oxide, 10-15 parts of C9 hydrogenated petroleum resin and 60-70 parts of ferrous complex. The preparation method comprises the steps of adding propyl gallate and C9 hydrogenated petroleum resin into a stirring tank, heating to 145-150 ℃, timing, preserving heat, stirring for 20-30 min, cooling to 120-125 ℃, sequentially adding n-octanol and nano cerium oxide, stirring for 15-20 min, adding a ferrous complex, stirring at a high speed for 30-40 min, and discharging.
4. The preparation method of the weather-resistant asphalt-based waterproof coating material according to claim 1, wherein the addition amount of the asphalt anti-aging agent applied to the modified asphalt is 5.0-10%.
5. The preparation method of the weather-resistant asphalt-based waterproof coating material according to claim 1, wherein the composite anti-aging agent is a mixture of SD1688 water-based antioxidant emulsion and 1130 water-based ultraviolet absorber, and the mass ratio of the SD1688 water-based antioxidant emulsion to the 1130 water-based ultraviolet absorber is 1: 1.
6. The method for preparing the weather-resistant asphalt-based waterproof coating material according to claim 1, wherein the cellulose ether thickener is 250HBR, and the polyurethane thickener is OPTIFLO-H3300 VF.
7. The preparation method of the weather-resistant asphalt-based waterproof coating material according to claim 1, wherein the modified emulsion is a composite modified system consisting of neoprene latex and acrylic emulsion, and the mass ratio of the neoprene latex to the acrylic emulsion is 1: 2.
8. The weather-resistant asphalt-based waterproof coating prepared by the preparation method according to any one of claims 1 to 7.
9. The weather-resistant asphalt-based waterproof coating material according to claim 8 is applied to roofing renovation waterproofing.
10. Use according to claim 9, characterised in that in the application to the waterproofing of roofing repairs, in combination with the coating thus obtained, is an exposed self-adhesive bitumen-based waterproofing coil; the exposed self-adhesive asphalt-based waterproof coiled material is self-adhesive on a single surface, the surface layer is coated with a fluorine plastic film, and the thickness of the film is 0.10-0.15 m.
CN202210782741.4A 2022-06-29 2022-06-29 Preparation method of weather-resistant asphalt-based waterproof coating and application of weather-resistant asphalt-based waterproof coating to roof repairing and waterproofing Active CN115109486B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004126231A (en) * 2002-10-02 2004-04-22 Toppan Forms Co Ltd Electrophotographic toner containing thermosensitive adhesive
CN109868064A (en) * 2019-01-23 2019-06-11 雨中情防水技术集团有限责任公司 A kind of aqueous large arch dam, strong-hydrophobicity pitch base waterproof coating of low viscosity and preparation method thereof
CN113683958A (en) * 2021-09-06 2021-11-23 河北三棵树涂料有限公司 Environment-friendly water-based asphalt waterproof coating and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004126231A (en) * 2002-10-02 2004-04-22 Toppan Forms Co Ltd Electrophotographic toner containing thermosensitive adhesive
CN109868064A (en) * 2019-01-23 2019-06-11 雨中情防水技术集团有限责任公司 A kind of aqueous large arch dam, strong-hydrophobicity pitch base waterproof coating of low viscosity and preparation method thereof
CN113683958A (en) * 2021-09-06 2021-11-23 河北三棵树涂料有限公司 Environment-friendly water-based asphalt waterproof coating and preparation method thereof

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