CN113462283A - Preparation method of asphalt shingle with super-hydrophobic surface - Google Patents
Preparation method of asphalt shingle with super-hydrophobic surface Download PDFInfo
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- CN113462283A CN113462283A CN202110609831.9A CN202110609831A CN113462283A CN 113462283 A CN113462283 A CN 113462283A CN 202110609831 A CN202110609831 A CN 202110609831A CN 113462283 A CN113462283 A CN 113462283A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D1/00—Roof covering by making use of tiles, slates, shingles, or other small roofing elements
- E04D1/28—Roofing elements comprising two or more layers, e.g. for insulation
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/254—Roof garden systems; Roof coverings with high solar reflectance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
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- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
A preparation method of an asphalt shingle with a super-hydrophobic surface comprises the following steps: the first choice of the color sand comprises fine sand and superfine sand, and the ratio of the fine sand to polymethyl hydrogen siloxane is 3-6: 1, coating the mixture on the asphalt to be solidified, and solidifying the mixture for 1 to 3 hours at the temperature of 100-130 ℃ to form a pre-solidified substrate as a primary coarse structure; mixing the superfine sand in a mixing ratio of 1: adding anhydrous ethanol in a mass ratio of 20-30, stirring for 5-15min by using a magnetic stirrer, and then mixing the polymethylhydrosiloxane in a weight ratio of 1: adding anhydrous ethanol in a mass ratio of 20-30, and stirring for 15-25min by using a magnetic stirrer to form suspension to be sprayed; spraying the suspension on a pre-cured asphalt tile to obtain a secondary coarse structure; the spraying pressure is 2.0-2.5MPa, the distance between the spray gun and the substrate is 25-30cm, and the moving speed is 10-15 mm/s; after the spraying is finished, the mixture is placed under the temperature of 110-. The preparation method has the advantages of simple preparation method of the super-hydrophobic surface, high durability, good repeatability, suitability for large-area preparation, ideal strength and firm combination with the asphalt substrate.
Description
Technical Field
The application relates to the technical field of colorful asphalt shingles with glass fiber tires, in particular to a preparation method of an asphalt shingle with a super-hydrophobic surface.
Background
The colorful asphalt tile with the glass fiber tire is applied to roof waterproofing as a novel building material, can greatly reduce the load of the roof and reduce the transportation cost and the construction cost, and has the advantages of good flexibility, pressure resistance, water resistance, attractiveness and the like. The asphalt shingle can adapt to the structure construction of any complicated shape, and the construction is simple, and is pollution-free, can alleviate workman intensity of labour again.
The contact angle between the super-hydrophobic surface and the water drop is more than 150 degrees, the water drop is hardly wetted on the super-hydrophobic surface, and the water drop is spherical and easy to roll off due to the large contact angle and the small rolling angle, so that dust and dirt along the way can be taken away in the rolling process. A large number of researches show that the super-hydrophobic material has outstanding performances in the aspects of water resistance, self-cleaning and the like of building materials, and the basic performances of the building surface such as impermeability and anti-icing property can be effectively improved by constructing the super-hydrophobic surface. The super-hydrophobic surface and the asphalt shingle can be combined, so that the asphalt shingle can keep clean and attractive appearance, the cleaning cost is reduced, the waterproof function of the asphalt shingle can be further enhanced, and the durability of the asphalt shingle is improved.
In actual engineering, no example of industrially producing the super-hydrophobic asphalt shingle exists for a while, the conventional methods for preparing the super-hydrophobic surface include a plasma/electron etching treatment method, a chemical vapor/electrochemical deposition method, a spin coating method, a sol-gel method, a chemical water bath deposition method, a self-assembly method, a photoetching method and the like, and the preparation method is complicated. Many of the methods involve special equipment, severe conditions and long periods, and are difficult to be used for preparing large-area superhydrophobic surfaces, so that the application of the superhydrophobic surfaces in practical engineering is restricted. In addition, most of the preparation of the super-hydrophobic surface on the market is realized by the super-hydrophobic coating, and the mechanical durability of the coating cannot be ensured by simply combining the coating with the substrate, and the combination is insufficient, so that the coating is easy to peel off.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the preparation method of the asphalt shingle with the super-hydrophobic surface, which has the advantages of simple preparation method of the super-hydrophobic surface, high durability, good repeatability, suitability for large-area preparation, ideal strength and firm combination with an asphalt substrate.
In order to solve the technical problem, the technical scheme adopted by the application is as follows: a method for preparing an asphalt shingle having a superhydrophobic surface, the method comprising the steps of:
(1) firstly, dividing the colored sand into fine sand and superfine sand, wherein the particle size of the fine sand is defined to be 1mm or more, and the particle size of the superfine sand is defined to be less than 1 mm;
(2) mixing fine sand and polymethyl hydrogen siloxane in a ratio of 3-6: 1, then uniformly coating the mixture on the asphalt to be cured, and curing at 100-130 ℃ for 1-3h to form a pre-cured substrate which is used as a primary rough structure of a super-hydrophobic surface;
(3) mixing the superfine sand in a mixing ratio of 1: adding anhydrous ethanol in a mass ratio of 20-30, stirring for 5-15min by using a magnetic stirrer, and then mixing the polymethylhydrosiloxane in a weight ratio of 1: adding anhydrous ethanol in a mass ratio of 20-30, and stirring for 15-25min by using a magnetic stirrer to form suspension to be sprayed;
(4) spraying the suspension on a pre-cured asphalt tile to prepare a secondary coarse structure of the super-hydrophobic coating; the spraying pressure is 2.0-2.5MPa, the distance between the spray gun and the substrate is 25-30cm, and the moving speed is 10-15 mm/s; after the spraying is finished, the mixture is placed under the temperature of 110-130 ℃ for curing for 3-5h, and the super-hydrophobic asphalt tile is formed.
Preferably, in the step (2), the fine sand and the polymethylhydrosiloxane are mixed in a ratio of 5: 1, and curing at the temperature of below 120 ℃ for 2h to form a precured substrate.
Preferably, in the step (3), the superfine sand is mixed in a ratio of 1: 25, adding absolute ethyl alcohol, stirring for 10min by using a magnetic stirrer, and then adding polymethylhydrosiloxane in a weight ratio of 1: adding absolute ethyl alcohol according to the mass ratio of 25, and stirring for 20min by using a magnetic stirrer to form a suspension to be sprayed.
Preferably, in the step (4), the sprayed asphalt shingle is cured at 120 ℃ for 4 hours.
Preferably, the primary roughness structure is coated to a thickness of 2 to 3 mm.
Preferably, the spraying thickness of the secondary coarse structure is 0.3-0.8 mm.
The application has the advantages and beneficial effects that:
1. the method comprises the steps of firstly, dividing color sand into fine sand and superfine sand, and then carrying out surface coating treatment twice, so as to obtain the asphalt shingle with the hydrophobic surface; and the reason why the fine sand is adopted in the application is as follows: one of the manufacturing processes of the asphalt shingle is to uniformly spread colored sand on the asphalt, and the fine sand is adopted in order to not change the original raw materials for manufacturing the asphalt shingle, and simultaneously, the manufacturing of the hydrophobic surface can be considered.
2. This application will be various sand according to the reason of particle size grading: one of the requirements of the superhydrophobic surface is a sufficiently rough surface, and the rough surface is preferably a secondary micro-nano rough structure. Considering that fine sand is difficult to reach the nanometer level, only finer grit (i.e., less than 1 mm) can be used to make the secondary rough surface. The thicker gravel (more than 1 mm) is used as a primary structure in a secondary coarse structure, so that the coating is bonded on the surface of the asphalt shingle more firmly.
3. The polymethyl hydrogen siloxane is adopted in the preparation process, has two functions, is used as an adhesive between particles and also used as an adhesive between a coating and asphalt, and thus, the bonding firmness between the hydrophobic surface and the asphalt tile is improved; secondly, polymethylhydridosiloxanes provide one of the requirements for a superhydrophobic surface, i.e. having a sufficiently low surface energy.
4. The coating thickness of the first-level rough structure of the application is not required to expose the asphalt substrate, preferably 2-3 mm; the spraying thickness of the secondary coarse structure is covered with the primary coarse structure, preferably 0.3-0.8 mm; the distance between the spray gun and the substrate is 25-30cm, the substrate refers to a primary rough structure, and the distance is limited because if the distance is too close, ethanol is not volatilized sufficiently to reach the surface to be sprayed, and particle agglomeration is likely to be caused, so that a sufficiently rough surface cannot be formed; if the distance is too far, insufficient spraying is easily caused; therefore, by setting the specific distance dimension, the above-mentioned disadvantage is effectively avoided.
5. The preparation process of the application also adopts absolute ethyl alcohol, and has two functions, namely, the absolute ethyl alcohol is used as a solvent to fully disperse the superfine sand and the siloxane, so that the uniformity and the thickness consistency of the subsequent coating are ensured; secondly, when spraying, the absolute ethyl alcohol can be quickly evaporated in the air, so that the dispersed superfine sand can construct a rough structure on the surface to form a hydrophobic surface meeting the requirement; furthermore, during the addition step, where absolute ethanol is used as solvent, siloxane is used as solute, and siloxane is added last.
Drawings
Fig. 1 is a picture of a colored sand covered asphalt shingle.
FIG. 2 is a high power lens optical contact angle measurement image of the surface of a superhydrophobic asphalt shingle.
FIG. 3 is a photograph of the surface of the example product prepared just after the liquid has dripped.
FIG. 4 shows the flow of the liquid on the surface of the product of the examples after a slight inclination.
FIG. 5 shows the flow of liquid over the surface of the product of the examples after further tilting.
Fig. 6 is a photograph showing complete loss of liquid from the surface of the product.
FIG. 7 is a picture of a UV irradiation durability test of a superhydrophobic asphalt shingle.
Fig. 8 is a super-hydrophobic asphalt water flow scouring durability test picture.
FIG. 9 is a flow chart of the preparation of a superhydrophobic asphalt shingle.
Detailed Description
The present application is described in further detail below by way of examples, but the present application is not limited to only the following examples.
The specific flow chart of the preparation of the super-hydrophobic asphalt shingle of the application is shown in the attached figure 9.
Example 1
(1) And separating the color sand into fine sand and superfine sand by using a screening machine. The particle size of the fine sand is defined to be 1mm or more, and the particle size of the ultra-fine sand is defined to be 1mm or less;
(2) mixing fine sand and polymethylhydrosiloxane in a ratio of 5: 1, then uniformly coating the mixture on the asphalt to be cured, and curing for 2 hours at the temperature of below 120 ℃ to form a pre-cured substrate which is used as a primary rough structure of a super-hydrophobic surface;
(3) mixing the superfine sand in a mixing ratio of 1: 25, adding absolute ethyl alcohol, stirring for 10min by using a magnetic stirrer, and then adding polymethylhydrosiloxane in a weight ratio of 1: adding absolute ethyl alcohol according to the mass ratio of 25, and stirring for 20min by using a magnetic stirrer to form suspension to be sprayed;
(4) spraying the suspension on a pre-cured asphalt tile to prepare a secondary coarse structure of a super-hydrophobic coating, wherein the pressure of air spraying is 2.0MPa, the distance between a spray gun and a substrate is 25cm, and the moving speed is 12 mm/s; after the spraying is finished, the mixture is placed below 120 ℃ for curing for 4 hours, and the super-hydrophobic asphalt shingle is formed.
Example 2
(1) And separating the color sand into fine sand and superfine sand by using a screening machine. The particle size of the fine sand is defined to be 1mm or more, and the particle size of the ultra-fine sand is defined to be 1mm or less;
(2) mixing fine sand and polymethylhydrosiloxane at a ratio of 8: 1, then uniformly coating the mixture on the asphalt to be cured, and curing at the temperature of below 125 ℃ for 1.5 hours to form a pre-cured substrate which is used as a primary rough structure of a super-hydrophobic surface;
(3) mixing the superfine sand in a mixing ratio of 1: 28, stirring for 12min by using a magnetic stirrer, and adding polymethylhydrosiloxane in a weight ratio of 1: adding absolute ethyl alcohol according to the mass ratio of 28, and stirring for 22min by using a magnetic stirrer to form suspension to be sprayed;
(4) spraying the suspension on a pre-cured asphalt tile to prepare a secondary coarse structure of a super-hydrophobic coating, wherein the pressure of air spraying is 2.4MPa, the distance between a spray gun and a substrate is 28cm, and the moving speed is 15 mm/s; after the spraying is finished, the mixture is placed below 120 ℃ for curing for 4 hours, and the super-hydrophobic asphalt shingle is formed.
The product prepared by the embodiment is subjected to a coating contact angle measurement diagram, the contact angles are all larger than 150 degrees, and the definition of the super-hydrophobic surface is met; in particular, as shown in fig. 2, the contact angle is greater than 150 °.
A liquid hydrophobicity experiment is carried out on the product prepared in the example 1, specifically, as shown in the attached drawings of fig. 3-6, fig. 3 is an attached drawing in which liquid is just dripped on the surface prepared by the product prepared in the example, and the liquid can be in an arc-shaped non-dispersed, non-flat and non-permeable state; FIG. 4 is a slightly inclined flow state of the liquid, which shows that the liquid is not adhered to the surface of the product, has no penetration, and is separated cleanly; FIG. 5 shows the flow of the liquid after further tilting, showing no adhesion, no permeation, and a clean release from the product surface; fig. 6 shows the state of complete and clean liquid loss from the product surface, no residue and no penetration.
As shown in fig. 7, the product prepared in example 1 was subjected to a super-hydrophobic asphalt shingle uv irradiation durability test,
putting the super-hydrophobic asphalt shingle into an ultraviolet aging test box, as shown in fig. 7, wherein the test box is internally provided with 2 light tubes in total, the emission power of the light tubes is 15W, the distance between the light tubes and the test piece is 120mm, and the average intensity of ultraviolet light on the surface of the test piece is 165.77W/m through calculation2The irradiation time is 120h, and the total energy is calculated to be 71.62MJ/m2. The annual ultraviolet irradiation amount in Zhejiang is about 283.16MJ/m2The simulated irradiation time of the ultraviolet irradiation accelerated aging test is about 3 months, and the super-hydrophobic performance of the asphalt shingle is not changed after the test.
As shown in fig. 8, the product prepared in example 1 was subjected to a super-hydrophobic asphalt water stream scouring durability test, and the super-hydrophobic asphalt shingle was placed under a high-pressure tap for 2 hours to be scoured, and still had super-hydrophobic performance after being scoured.
Claims (6)
1. A preparation method of an asphalt shingle with a super-hydrophobic surface is characterized by comprising the following steps: the method comprises the following steps:
(1) firstly, dividing the colored sand into fine sand and superfine sand, wherein the particle size of the fine sand is defined to be 1mm or more, and the particle size of the superfine sand is defined to be less than 1 mm;
(2) mixing fine sand and polymethyl hydrogen siloxane in a ratio of 3-6: 1, then uniformly coating the mixture on the asphalt to be cured, and curing at 100-130 ℃ for 1-3h to form a pre-cured substrate which is used as a primary rough structure of a super-hydrophobic surface;
(3) mixing the superfine sand in a mixing ratio of 1: adding anhydrous ethanol in a mass ratio of 20-30, stirring for 5-15min by using a magnetic stirrer, and then mixing the polymethylhydrosiloxane in a weight ratio of 1: adding anhydrous ethanol in a mass ratio of 20-30, and stirring for 15-25min by using a magnetic stirrer to form suspension to be sprayed;
(4) spraying the suspension on a pre-cured asphalt tile to prepare a secondary coarse structure of the super-hydrophobic coating; the spraying pressure is 2.0-2.5MPa, the distance between the spray gun and the substrate is 25-30cm, and the moving speed is 10-15 mm/s; after the spraying is finished, the mixture is placed under the temperature of 110-130 ℃ for curing for 3-5h, and the super-hydrophobic asphalt tile is formed.
2. The method for preparing an asphalt shingle having a superhydrophobic surface according to claim 1, wherein: in the step (2), the fine sand and the polymethylhydrosiloxane are mixed in a ratio of 5: 1, and curing at the temperature of below 120 ℃ for 2h to form a precured substrate.
3. The method for preparing an asphalt shingle having a superhydrophobic surface according to claim 1, wherein: in the step (3), the superfine sand is mixed according to the weight ratio of 1: 25, adding absolute ethyl alcohol, stirring for 10min by using a magnetic stirrer, and then adding polymethylhydrosiloxane in a weight ratio of 1: adding absolute ethyl alcohol according to the mass ratio of 25, and stirring for 20min by using a magnetic stirrer to form a suspension to be sprayed.
4. The method for preparing an asphalt shingle having a superhydrophobic surface according to claim 1, wherein: in the step (4), the sprayed asphalt shingle is cured for 4 hours at the temperature of below 120 ℃.
5. The method for preparing an asphalt shingle having a superhydrophobic surface according to claim 1, wherein: the coating thickness of the primary coarse structure is 2-3 mm.
6. The method for preparing an asphalt shingle having a superhydrophobic surface according to claim 1, wherein: the spraying thickness of the secondary coarse structure is 0.3-0.8 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948116A (en) * | 2023-02-13 | 2023-04-11 | 西南交通大学 | Asphalt pavement graded super-hydrophobic ice-suppressing coating and preparation method thereof |
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| CN108914601A (en) * | 2018-05-25 | 2018-11-30 | 天津市禹红建筑防水材料有限公司 | A kind of anti-mildew bacterial type fiberglass asphalt tile and preparation method |
| US20190017273A1 (en) * | 2014-02-21 | 2019-01-17 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
| CN209509322U (en) * | 2018-09-28 | 2019-10-18 | 南雄鼎成新材料科技有限公司 | The high mould proof fiberglass asphalt tile of waterproof |
| CN210887800U (en) * | 2019-10-14 | 2020-06-30 | 天津禹红房屋修缮有限公司 | Self-cleaning type colored glass fiber asphalt tile |
-
2021
- 2021-06-01 CN CN202110609831.9A patent/CN113462283B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190017273A1 (en) * | 2014-02-21 | 2019-01-17 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
| CN108914601A (en) * | 2018-05-25 | 2018-11-30 | 天津市禹红建筑防水材料有限公司 | A kind of anti-mildew bacterial type fiberglass asphalt tile and preparation method |
| CN209509322U (en) * | 2018-09-28 | 2019-10-18 | 南雄鼎成新材料科技有限公司 | The high mould proof fiberglass asphalt tile of waterproof |
| CN210887800U (en) * | 2019-10-14 | 2020-06-30 | 天津禹红房屋修缮有限公司 | Self-cleaning type colored glass fiber asphalt tile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948116A (en) * | 2023-02-13 | 2023-04-11 | 西南交通大学 | Asphalt pavement graded super-hydrophobic ice-suppressing coating and preparation method thereof |
| CN115948116B (en) * | 2023-02-13 | 2023-11-21 | 西南交通大学 | Graded super-hydrophobic ice-inhibiting coating for asphalt pavement and preparation method thereof |
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Denomination of invention: A preparation method of asphalt shingles with superhydrophobic surface Effective date of registration: 20230220 Granted publication date: 20220520 Pledgee: Donglin sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG SAITENG NOVEL BUILDING MATERIAL Co.,Ltd. Registration number: Y2023980032903 |
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