HYBRID POLYMER COATING FOR PETROUS OR CERAMIC SUBSTRATES, PETROUS OR CERAMIC SUBSTRATE, AND OBTAINING METHOD

摘要

A coating having a thickness between 0.1 and 2 mm is obtained from a mixture with the following composition: 10-25% by weight of micronized powder; 40-60% by weight of inorganic gravels of petrographic origin of sizes comprised between 0.063-2 mm; 10-40% by weight of a polymerisable base resin selected from polyurethane, polyester, epoxy or acrylic, with additives, and optionally pigments. The proportion of the mentioned gravel and micronized powder of the coating being up to 90% in an inner most area of interphase between coating and surface of the petrous substrate, covering one third of the thickness of the coating. The method comprises depositing the mentioned mixture on the substrate and vibrating the assembly, and subsequently proceeding to a step of curing and subsequent mechanical finishing of the surface.

主权项

1. A hybrid polymer coating for petrous or ceramic substrates providing a surface layer adhered firmly to the substrate, wherein said coating is prepared from a mixture with the following composition:
10-25% by weight of micronized powder with inorganic loads of petrographic origin; 40-60% by weight of inorganic gravels of petrographic origin comprising at least one of quartz, silica or silica sand, glass, recycled mirrors, or silicon, of sizes comprised between 0.063-2 mm; 10-40% by weight of a polymerisable base resin selected from polyurethane, polyester, epoxy or acrylic comprising up to 3% of additives for said resin; said inorganic gravels and micronized powder form a concentration gradient in the coating, and the proportion of the mentioned gravel and micronized powder of the coating being up to 90% in one lower third of the thickness of the coating corresponding to the inner most area of the coating at the interphase between coating and surface of the petrous or ceramic substrate, whereby an upper part of the coating is removed to provide a thickness of the coating between 0.1 and 2 mm.