Protection of doorplate stone after cleaning and renovation
2023-11-27 14:49
After cleaning and renovation, the micropores of stone have been opened, which increases the specific surface area, so that its adsorption capacity for dust and dirt is increased. If it is not protected in time, it is easy to be polluted again. We have discussed a lot about stone surface protective agents, and here we only mention a few basic points that should have good protection, that is, it can alleviate or block the erosion, damage and dirt of the surrounding environment, such as acid rain resistance, pollution resistance, alkali washing resistance, water repellency and oil repellency; The protective agent should have good compatibility with the stone, that is, the protective agent itself and its action process should not have negative effects on the stone, such as yellowing, causing expansion pressure, hindering the breathing of the stone, etc; The protective agent should have good weather resistance and recoating property, because the normal effective life of stone is much longer than that of ordinary organic protective agent. The better the weather resistance of the protective agent is, the less the recoating times are. The better the recoating property is, the less the negative impact on the stone after the protection failure is. Generally speaking, it is better to use permeable silicone protective agent with respiratory function.
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