Inorganic coating composition which can be cured at low temperature and a preparation method thereof

EXAMPLE 1

[0067]The present invention provides an inorganic coating composition, the preparing method thereof is as below:[0068](1) preparing inorganic solution: 30 wt % silica sol is mixed with 30 wt % of organic silane and 15 wt % ethanol, and the mixed solution is stirred at 40-50 degrees Celsius for 5-10 minutes. The organic silane is the methyl trimethoxy silane, or tetraethoxy silane, or a mixture thereof. The mixed solution of organic silane and silica sol create chemical reaction, the heat is produced, and the mixed solution changes from a turbid state to a transparent state. At this time, adding methanol, or ethanol, or isopropanol, or the mixture thereof to control the viscosity and the reaction speed of the solution. The inorganic solution in sol state is made through these processes.[0069](2) stirring the mixed solution: the inorganic solution generated in step (1), 9 wt % functional additives, which are potassium titanate or alumina, 15wt% pigment powders of titanium oxide,

EXAMPLE 2

[0072]The present invention provides an inorganic coating composition which can be cured at low temperature, the composition comprises the ingredient as below:[0073]70 wt % inorganic solution. The said inorganic solution comprises the following ingredient: 30 wt % tetraethoxysilane, 15 wt % ethanol, 25 wt % silica sol;[0074]10 wt % functional additives, which is the mixture of potassium titanate and alumina, wherein the amount of potassium titanate is 3 wt %.[0075]19.5 wt % inorganic pigment;[0076]0.5 wt % other functional additives, the other functional additive is tourmaline;

[0077]The percentage above mentioned is the proportion of each ingredient in the whole of inorganic coating composition, by weight.

EXAMPLE 3

[0078]The present invention provide an inorganic coating composition which can be cured at low temperature, the composition comprises the ingredient as below:[0079]80 wt % inorganic solution. The said inorganic solution comprises the following ingredient: 40 wt % the mixture of tetraethoxysilane and methyl trimethoxysilane, the ratio of tetraethoxysilane and methyl trimethoxysilane is 1:1 by weight, 15 wt % ethanol, 25 wt % silica sol;[0080]5 wt % functional additives, which are the mixture of potassium titanate and alumina, the amount of potassium titanate is 4 wt %;[0081]13 wt % inorganic pigment;[0082]2.0 wt % other functional additives, the other functional additive is tourmaline;

[0083]The percentage above mentioned is the proportion of each ingredient in the whole of inorganic coating composition, by weight.