A self-cleaning coating structure for building stone surfaces

By using a multi-layer coating structure, including a high-adhesion base layer, a weather-resistant intermediate layer, and a superhydrophobic surface functional layer, the problems of easy contamination, difficult cleaning, and poor durability of stone coatings are solved, achieving self-cleaning and improved durability, and reducing maintenance costs.

CN224280105UActive Publication Date: 2026-05-26GUANGDONG BAOLILAI NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG BAOLILAI NEW MATERIAL TECH CO LTD
Filing Date
2025-04-03
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional building stone coatings are prone to contamination, difficult to clean, have poor durability, high maintenance costs, and are prone to aging and cracking in outdoor environments.

Method used

It adopts a multi-layer coating structure, including a bottom layer, an intermediate layer and a surface functional layer. The bottom layer is composed of a high-adhesion material, the intermediate layer is composed of a weather-resistant polymer material, and the surface functional layer is made of superhydrophobic nanomaterials. It achieves self-cleaning function by using rainwater to wash away dirt and photocatalytic decomposition.

Benefits of technology

It achieves long-term self-cleaning effect on stone surfaces, reduces maintenance frequency, extends the life of stone, and improves coating adhesion and durability.

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Abstract

This utility model relates to a self-cleaning surface coating structure for building stone, comprising a base layer, an intermediate layer, and a surface functional layer. The base layer is a high-adhesion material used to enhance the adhesion between the coating and the stone surface; the intermediate layer contains a weather-resistant polymer material to improve the coating's resistance to weathering; the surface functional layer is made of superhydrophobic nanomaterials, achieving a self-cleaning effect on the stone surface under rain or sunlight. This coating structure can effectively reduce contaminant adhesion, lower cleaning costs, and extend the service life of the stone.
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