A kind of preparation method of environment-friendly bamboo charcoal board for decoration
A bamboo charcoal, environmentally friendly technology, applied in applications, home appliances, flat products, etc., can solve the problems of uneven density of bamboo charcoal boards, high cost of bamboo charcoal boards, uneven dispersion of bamboo charcoal powder, etc., to improve tensile strength and elastic modulus. , High production efficiency and uniform performance
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[0020] A kind of preparation method of environment-friendly bamboo charcoal board for decoration, specifically comprises the following steps:
[0021] (1) The prepared or purchased bamboo charcoal has a moisture content of 10% to 14%, a fixed carbon content of 85% to 88%, an ash content of 2% to 4%, and a specific surface area of 300 to 600m 2 / g; volatile matter 6%~8%; air-dry density ≥ 0.800g / cm3. Then the bamboo charcoal is crushed into 300-1000-mesh bamboo charcoal powder (with a particle size within the range of 10-50 μm).
[0022] (2) Using biomass nanocellulose as a dispersant, the diameter of the nanocellulose is between 10 and 100, and dissolving the nanocellulose in deionized water to form a nanocellulose solution of a certain concentration;
[0023] Using 80-100 mesh bamboo powder as raw material, use 15-25% chlorous acid solution and sodium hydroxide solution to remove lignin and hemicellulose, then use TEMPO oxidation method to weigh 0.01g TEMPO and 0.1g NaBr s...
Embodiment 1
[0030] According to the water content of 10%, the fixed carbon content is 85% to 88%, the ash content is 2% to 4%, and the specific surface area is 400m 2 / g, volatile matter 6% to 8%; if the air-dry density is 0.800g / cm3, it is required to purchase bamboo charcoal, then dry the bamboo charcoal until it is absolutely dry, and then crush it into 500-mesh bamboo charcoal powder.
[0031] Using 100 mesh bamboo powder as raw material, use 25% chlorous acid solution and sodium hydroxide solution to remove lignin and hemicellulose, then use TEMPO oxidation method to weigh 0.01g TEMPO and 0.1gNaBr to dissolve in 100mL deionized Add 1g of α-cellulose to the water and continue to stir until it is completely dissolved, then slowly drop in 8mmol of sodium hypochlorite, and adjust the pH to about 10 with dilute hydrochloric acid and NaOH solution respectively, add 5ml of absolute ethanol to terminate the reaction after 4 hours of reaction, and use Wash with ionic water until neutral. Tak...
Embodiment 2
[0036] According to the moisture content of 10%, the fixed carbon content is 85% to 88%, the ash content is 2% to 4%, and the specific surface area is 500m 2 / g, volatile matter 6% to 8%; if the air-dry density is 0.80g / cm3, it is required to purchase bamboo charcoal, then dry the bamboo charcoal until it is absolutely dry, and then crush it into 800-mesh bamboo charcoal powder.
[0037] Using 100 mesh bamboo powder as raw material, use 25% chlorous acid solution and sodium hydroxide solution to remove lignin and hemicellulose, then use TEMPO oxidation method to weigh 0.01g TEMPO and 0.1gNaBr to dissolve in 100mL deionized Add 1g of α-cellulose to the water and continue to stir until it is completely dissolved, then slowly drop in 8mmol of sodium hypochlorite, and adjust the pH to about 10 with dilute hydrochloric acid and NaOH solution respectively, add 5ml of absolute ethanol to terminate the reaction after 4 hours of reaction, and use Wash with ionic water until neutral. T...
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