A kind of preparation method of asphalt shingle with superhydrophobic surface

Abstract

A method for preparing asphalt shingles with a super-hydrophobic surface: the preferred color sand is divided into fine sand and ultra-fine sand, the fine sand and polymethylhydrogen siloxane are mixed in a mass ratio of 3-6:1, and coated On the asphalt to be cured, cure at 100-130° for 1-3h to form a pre-cured base as a first-level rough structure; add ultra-fine sand to absolute ethanol at a mass ratio of 1:20-30, and use magnetic force Stir with a stirrer for 5‑15min, then add polymethylhydrogensiloxane to absolute ethanol at a mass ratio of 1:20‑30, and stir with a magnetic stirrer for 15‑25min to form a suspension to be sprayed; mix the above suspension Spray on the pre-cured asphalt shingle to obtain a secondary rough 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 10-15mm / s; after spraying, place Curing at 110-130° for 3-5 hours to form a super-hydrophobic asphalt tile. The super-hydrophobic surface has the advantages of simple preparation method, high durability, good repeatability, suitable for large-area preparation, ideal strength and firm combination with asphalt substrate.

Description

technical field [0001] The present application relates to the technical field of colorful fiberglass base asphalt shingles, in particular to a method for preparing asphalt shingles with a super-hydrophobic surface. Background technique [0002] As a new type of building material, colorful glass fiber asphalt tiles are applied to roof waterproofing, which can greatly reduce the load on the roof, reduce transportation costs and construction costs, and have the advantages of good flexibility, pressure resistance, waterproof and beautiful appearance. Asphalt shingles can adapt to the construction of structures with any complex shape, and the construction is simple, pollution-free, and can reduce the labor intensity of workers. [0003] The contact angle between the superhydrophobic surface and the water droplet is more than 150°. The water droplet hardly wets on the superhydrophobic surface, and because of its large contact angle and small rolling angle, the water droplet is sph...

AI Technical Summary

Problems solved by technology

[0004] In actual engineering, there is no example of industrial production of super-hydrophobic asphalt shingles. At present, the common methods for preparing super-hydrophobic surfaces include plasma / electronic etching treatment, chemical vapor / electrochemical deposition, spin coating, and sol-gel method. , chemical water bath deposition method, self-assembly method, photolithography, etc., the preparation method is relatively cumbersome

Many of these methods involve special equipment, harsh conditions, and long cycles, making it difficult to prepare large-area superhydrophobic surfaces, which restricts the application of superhydrophobic surfaces in practical engineering.

In addition, the preparation of most superhydrophobic surfaces on the market is achieved by superhydrophobic coatings, but the simple combination of the coating and the substrate cannot guarantee its mechanical durability, and the insufficient combination makes it easy to peel off

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