Modified kieselguhr and preparation method thereof, and indoor decorative material containing modified kieselguhr and preparation method thereof
A technology of interior decoration and diatomite, which is applied in the application field of modified diatomite and its preparation, and preparation of interior decoration materials, which can solve the problem of reducing the adsorption capacity of diatomite to harmful substances and blocking the micropore structure of diatomite , Reduce the environmental performance of materials and other issues, and achieve the effect of no volatility in organic matter content, low organic matter content, and high integrity
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[0082] The tap density provided by the present invention is 450kg / m 3 ~490kg / m 3 The preparation method of the modified diatomite is divided into the following steps: firstly, obtain diatomite; then, take the diatomite, add sodium carbonate, activate it at a high temperature of 900°C to 1100°C after heating, and break it, namely Among them, the tap density of diatomite is not less than 500kg / m 3 ; The mass ratio of sodium carbonate to the diatomite is 1-3:100; the heating temperature is 600°C-900°C.
[0083] The present invention also provides a tap density of 450kg / m 3 ~490kg / m 3 The modified diatomite, its preparation method is divided into the following steps:
[0084] Step 1, obtaining diatomite;
[0085] Step 2. Take diatomaceous earth, add sodium carbonate, activate it at a high temperature of 900°C~1100°C after heating, and break it to get it;
[0086] The tap density of diatomite used in this method is not less than 500kg / m 3 ; The mass ratio of sodium carbonate...
Embodiment 1
[0124] Embodiment 1 tap density is 450kg / m 3 Preparation of Modified Diatomite
[0125] Take the diatomite raw ore, after a year of natural weathering, decomposition, and drying, select the part with a moisture content below 15% for crushing, and crush it to 30 mesh to 120 mesh; at the same time, further dry it to reduce the moisture content to 4%~ 6%; then select the qualified products with the required particle size of 80 mesh to 120 mesh through the air separation device. The obtained diatomite is detected by the national standard determination method, and its tap density is 500kg / m after determination. 3 .
[0126] Take the tap density as 500kg / m 3 Diatomite mixed with 1% sodium carbonate by mass, calcined at 600°C for 600 seconds, activated at 900°C for 60 seconds, so that a small amount of vitrified sodium silicate is produced on the surface of the micropores of diatomite, thereby thickening the individual diatoms The thin position of the surface increases the streng...
Embodiment 2
[0129] Embodiment 2 tap density is 470kg / m 3 Preparation of Modified Diatomite
[0130] Take the diatomite raw ore, after a year of natural weathering, decomposition, and drying, select the part with a moisture content below 15% for crushing, and crush it to 30 mesh to 120 mesh; at the same time, further dry it to reduce the moisture content to 4%~ 6%; then select the qualified products with the required particle size of 80 mesh to 120 mesh through the air separation device. The obtained diatomite is detected by the national standard determination method, and its tap density is 600 kg / m after determination. 3 .
[0131] Take the tap density as 600kg / m 3 Diatomite mixed with 2% sodium carbonate by mass, calcined at 750°C for 600 seconds, and activated at 1000°C for 50 seconds, so that a small amount of vitrified sodium silicate is produced on the surface of the micropores of diatomite, thereby thickening the individual diatoms The thin position of the surface increases the ...
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