The early epoxy floor has the advantages of high strength, wear resistance, beautiful decorative effect, good resistance to antisepsis, waterproof, dust proof, convenient maintenance and low maintenance cost. With the maturity of the domestic floor market, it has been widely applied in engineering decoration. Sometimes we find bubbles on the epoxy floor after construction. There are many reasons for this. We have an understanding of the causes of bubbles.
Epoxy floor bubbles occur mostly in the surface layer, and generally found shortly after construction, some of the morning batch scraped epoxy floor in the afternoon there are bubbles. The bubble is small, but it will eventually form a granular shape, and the ground will not be smooth. The cause of the bubbles is a matter of concern to all. Opening the bubbles, it is found that the bubbles contain water or yellowish liquid, the epoxy surface layer is separated from the base layer, and the binder adhering to the base layer is pulled into a peak-like nest; according to the "physics" explanation, in an airtight container containing liquid, the liquid evaporates, forming a saturated state. The relationship between the temperature and pressure of the three curves. In sealed vessels, the pressure of saturated vapor rises with the increase of temperature. When the temperature is 20.C, the pressure in the bulge is 0.01 MPa; when the temperature is between 70 and 80.C, it rises to 0.1 MPa in a straight line; in many areas, the extreme radiant heat of the ground in hot summer can reach about 70.C, at such high temperatures. The epoxy binder has been softened and its adhesion has been greatly reduced, so as to gradually inflate the tire, the epoxy floor has been bulged up and the binder has been pulled into a honeycomb shape; the epoxy layer and the ground without blisters are not firmly stained, and the contact part can be observed carefully, and there are parts that can not be cured. The reason is that epoxy is damp and can not solidify.
Where did the water come from? There are mainly several sources of water:
1. the basic waterproof layer is not done or the waterproof layer is not up to standard.
2. the cement mortar leveling layer has a maximum moisture content of more than 10%. The maximum moisture content of the base layer is greater than that of the leveling layer.
3. The combination of epoxy and base course construction is not good enough to leave voids and the chemical activity of epoxy itself, not completely cured or encounter moisture not completely cured residue or gas.
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