Ceramic paints

Abstract

A ceramic paint is provided, which includes a mixture of a silica sol-gel, 20 to 60 parts by weight of filler, and 1 to 50 parts by weight of a fluorine-containing polymer, wherein the silica sol-gel is formed by reacting 100 parts by weight of silica sol, 50 to 100 parts by weight of organic silane, and 0.3 to 1 parts by weight of a catalyst.

What is claimed is: 
     
         1 . A ceramic paint, consisting of:
 a mixture of a silica sol-gel, 20 to 60 parts by weight of filler, and 1 to 50 parts by weight of a fluorine-containing polymer,   wherein the silica sol-gel is formed by reacting 100 parts by weight of silica sol, 50 to 100 parts by weight of organic silane, and 0.3 to 1 parts by weight of a catalyst.   
     
     
         2 . The ceramic paint as claimed in  claim 1 , wherein the silica sol-gel has a solid content of 20% to 50%, and the solid has a particle diameter of 10 nm to 50 nm. 
     
     
         3 . The ceramic paint as claimed in  claim 1 , wherein the organic silane comprises methyltrimethoxy silane and/or methyltriethoxy silane. 
     
     
         4 . The ceramic paint as claimed in  claim 1 , wherein the silica sol-gel is formed by further reacting 5 to 10 parts by weight of an additional organic silane, wherein the additional organic silane comprises tetramethoxy silane, tetraethoxy silane, dimethyldimethoxy silane, dimethyldiethoxy silane, phenyltrimethoxy silane, or combinations thereof. 
     
     
         5 . The ceramic paint as claimed in  claim 1 , wherein the catalyst comprises formic acid, acetic acid, hydrochloric acid, citric acid, methyl formate, ethyl acetoacetate, maleic anhydride, or combinations thereof. 
     
     
         6 . The ceramic paint as claimed in  claim 1 , wherein the filler comprises silica, alumina, zirconium dioxide, silicon carbide, aluminum nitride, boron nitride, kaolin, talcum powder, mica powder, silicate of aluminum or zirconium, barium sulfate, metal fiber, stainless powder, or combinations thereof. 
     
     
         7 . The ceramic paint as claimed in  claim 1 , wherein the filler has a particle diameter of 0.05 μm to 30 μm. 
     
     
         8 . The ceramic paint as claimed in  claim 1 , wherein the fluorine-containing polymer comprises polytetrofluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkylvinylether copolymer (TFE/PAVE, PFA), tetrafluoroethylene-perfluoromethylvinylether copolymer (TFE/PMVE, MFA), tetrafluoroethylene-hexafluoropropylene copolymer (TFE/HFP, FEP), tetrafluoroethylene-ethylene copolymer (TFE/ethylene, ETFE), or combinations thereof. 
     
     
         9 . A ceramic paint, consisting of:
 a mixture of a silica sol-gel, 20 to 60 parts by weight of filler, 20 to 60 parts by weight of color powder, and 1 to 50 parts by weight of a fluorine-containing polymer,   wherein the silica sol-gel is formed by reacting 100 parts by weight of silica sol, 50 to 100 parts by weight of organic silane, and 0.3 to 1 parts by weight of a catalyst.