Preparation method for sound absorption wallpaper
A technology of sound-absorbing wallpaper and preparation steps, which is applied in the field of decorative materials, can solve the problems of sound-absorbing effect and time-effectiveness, and short-term use, and achieve the effects of significant sound-absorbing effect, strong sustainability, and reduced impact
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Embodiment 1
[0021] 1) Take 10 parts of quartz sand and 30 parts of coke, add 5 parts of table salt after mixing, put them in an electric furnace for calcination, raise the temperature to 1800℃, heating time 1h, after the reaction is over, cool to room temperature, take out the product, grind and crush After passing through a 100 mesh sieve;
[0022] 2) Take 50 parts of 30% hydrofluoric acid solution, add the powder in 1) for acid leaching, soak for 2h, after soaking, remove the supernatant, filter the powder sediment at the bottom, and then use deionization Wash 2 times in water;
[0023] 3) Put the cleaned powder into a vacuum container and heat it to 100°C for drying. After the drying is over, put the powder into an electric furnace for secondary calcination. Raise the temperature to 2200°C for a heating time of 3h. After the heating is over Reduce the temperature to 700℃, add 5 parts of alumina, continue to heat 1 after mixing, you can get β-Al 2 O 3 And nano silicon carbide powder;
[0024...
Embodiment 2
[0030] 1) Take 15 parts of quartz sand and 40 parts of coke, mix and add 7 parts of salt, put them in an electric furnace for calcination, raise the temperature to 1900℃, heating time 2h, after the reaction is over, cool to room temperature, take out the product, grind and crush After passing through a 100 mesh sieve;
[0031] 2) Take 60 parts of 35% hydrofluoric acid solution, add the powder in 1) for acid leaching, soak for 2.5h, after soaking, remove the supernatant, filter the powder sediment at the bottom, and then use it Ionized water cleaning 2 times;
[0032] 3) Put the cleaned powder into a vacuum container and heat it to 120°C for drying. After the drying is complete, put the powder into an electric furnace for secondary calcination. Raise the temperature to 2400°C for a heating time of 4h. After the heating is over Reduce the temperature to 750℃, add 10 parts of alumina, continue to heat 2 after mixing, you can get β-Al 2 O 3 And nano silicon carbide powder;
[0033] 4) ...
Embodiment 3
[0039] 1) Take 20 parts of quartz sand and 50 parts of coke, add 10 parts of table salt after mixing, put into electric furnace for calcination, raise the temperature to 2000℃, heating time 1-3h, after the reaction is over, cool to room temperature, take out the product After grinding and crushing, pass a 100-mesh sieve;
[0040] 2) Take 80 parts of 40% hydrofluoric acid solution, add the powder in 1) for acid leaching, soak for 3h, after soaking, remove the supernatant, filter the powder sediment at the bottom, and then deionize Wash with water 3 times;
[0041] 3) Put the cleaned powder into a vacuum container and heat it to 150°C for drying. After the drying is complete, put the powder into an electric furnace for secondary calcination. Raise the temperature to 2500°C for a heating time of 5h. After the heating is over Reduce the temperature to 800℃, add 15 parts of alumina, continue to heat 3 after mixing, you can get β-Al 2 O 3 And nano silicon carbide powder;
[0042] 4) Take...
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