Moisture regulating material and production method thereof
Disclosed is a moisture regulating ceramic material production method which includes the following process steps: mixing starting powders containing sepiolite and reactive alumina sulfate; grinding the starting powders; obtaining granules by dry granulation using alkaline solution with the starting powders; carrying out a pressing process of the granules; and obtaining the materials.
1 . A method for producing a moisture-regulating ceramic material, the method comprising:
mixing a sepiolite and a reactive alumina silicate to form a starting powder;
grinding the starting powder;
adding an alkaline solution to the starting powder;
obtaining granules by dry granulation of the alkaline-added starting powder;
pressing the obtained granules, wherein a weight ratio of the sepiolite and the reactive alumina silicate and the alkaline solution are between 4.5% to 7.5% and 26% to 29% and 54.5% to 64%, respectively;
adding 3% to 10% by weight of the boron-containing material to the starting powder or alkaline solution; and
geopolymerizing a structure obtained by the pressing of the granules at a temperature of between 25° C. and 250° C. in an environment of at least 50% humidity for a period of time of between two hours and twenty-four hours.
2 . The method of claim 1 , wherein the boron-containing material is boric acid.
3 . The method of claim 2 , wherein the boric acid has a weight ratio of between 3% and 8%.
4 . The method of claim 2 , wherein the weight ratio of the reactive alumina silicate is between 27% and 29%.
5 . The method of claim 2 , wherein the weight ratio of the sepiolite is between 6% and 7.5%.
6 . The method of claim 1 , wherein the boron-containing material is borax.
7 . The method of claim 6 , wherein the ratio of the borax is between 5% and 8%.
8 . The method of claim 6 , wherein the weight ratio of the reactive alumina silicate is between 26% and 27.25%.
9 . The method of claim 6 , wherein the weight ratio of the sepiolite is between 4.5% and 6.75%.
10 . The method of claim 1 , wherein the boron-containing material is a mixture of boric acid and borax.
11 . The method of claim 10 , wherein the mixture is mixed with waterglass at an ambient temperature of between 25° C. and 35° C. for between ten minutes and fifteen minutes.
12 . The method of claim 1 , wherein the reactive alumina silicate is metakaolin.
13 . The method of claim 1 , wherein the alkaline solution contains a caustic and a waterglass.
14 . The method of claim 13 , wherein the alkaline solution contains water.
15 . The method of claim 1 , wherein the step of geopolymerization is carried out in the environment of at least 80% humidity.
16 . The method of claim 1 , wherein the step of geopolymerization is carried out at a temperature of between 125° C. and 175° C.
17 . The method of claim 1 , further comprising:
embossing the moisture regulating ceramic material.
18 . The method of claim 1 , further comprising:
coloring the moisture regulating ceramic material.
19 . The method of claim 1 , further comprising:
partially glazing the moisture regulating ceramic material.
20 . The method of claim 1 , wherein the boron-containing material is added to the starting powder is solid form.
21 . The method of claim 1 , wherein the boron-containing material is added to the alkaline solution in liquid form.
22 . The method of claim 21 , wherein the boron-containing material is added to the alkaline solution by being dissolved in the alkaline solution.
23 . The method of claim 1 , wherein the boron-containing solution is added to the starting powder or to the alkaline solution in a fluid form.