Preparation process of long-fiber composite panels for bakelite boxes based on green and environmental protection
A technology of green environmental protection and preparation process, applied in the field of composite boards, can solve the problems of poor environmental protection performance, moldy raw materials, containing formaldehyde, etc., and achieve the effects of good antibacterial and antifungal properties, low cost, and good environmental performance.
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Embodiment 1
[0051] The present embodiment is a preparation method of an antibacterial filler, comprising the following steps:
[0052] A1: Add 10g sepiolite and 200g sodium phosphate solution with a mass fraction of 15% into a flask equipped with a stirrer, stir at room temperature and a stirring rate of 300r / min for 2h, then stand for 10h, and then centrifuge , drying and grinding the precipitate to obtain the initial modified sepiolite;
[0053] A2: Add 5g of primary modified sepiolite and 200g of hydrochloric acid solution with a molar concentration of 0.3mol / L into a flask equipped with a stirrer, and stir for 4h at a temperature of 80°C and a stirring rate of 400r / min. After the reaction is completed, the reaction product is vacuum filtered, the filter cake is placed in a vacuum drying oven, dried to constant weight at a temperature of 100 ° C, and ground through a 100-mesh sieve to obtain modified sepiolite;
[0054] A3: Add 1.48g of zinc chloride, 40g of modified sepiolite and 100...
Embodiment 2
[0056] The present embodiment is a preparation method of an antibacterial filler, comprising the following steps:
[0057] A1: Add 10g sepiolite and 200g sodium phosphate solution with a mass fraction of 15% into a flask equipped with a stirrer, stir for 3h at room temperature and a stirring rate of 500r / min, then stand for 20h, and then centrifuge , drying and grinding the precipitate to obtain the initial modified sepiolite;
[0058] A2: Add 5g of initially modified sepiolite and 200g of hydrochloric acid solution with a molar concentration of 0.3mol / L into a flask equipped with a stirrer, and stir for 5h at a temperature of 90°C and a stirring rate of 600r / min. After the reaction is completed, the reaction product is vacuum filtered, the filter cake is placed in a vacuum drying oven, dried to constant weight at a temperature of 110 ° C, and ground through a 100-mesh sieve to obtain modified sepiolite;
[0059] A3: Add 1.48g of zinc chloride, 40g of modified sepiolite and 1...
Embodiment 3
[0061] The present embodiment is a preparation method of a green and environment-friendly adhesive, comprising the following steps:
[0062] B1: Add 1 g of straw powder and 10 mL of sodium chlorite in acetic acid to form a sodium chlorite solution with a mass fraction of 1.3% into a flask equipped with a stirrer, at a temperature of 75 °C and a stirring rate of 300 r / The reaction was stirred at a constant temperature for 5 hours under the condition of The precipitate is freeze-dried to obtain cellulose;
[0063] B2: Add 1.0g of cellulose, 1.0g of phosphotungstic acid and 20mL of tetrahydrofuran into the reaction kettle, pass nitrogen to replace the air in the reaction kettle, and stir at a constant temperature for 5h at a temperature of 185°C and a stirring rate of 600r / min. , the reaction product was cooled to room temperature after the reaction, vacuum filtered, and the filtrate was freeze-dried to obtain Intermediate 1;
[0064] B3: add 60 mL of N,N-dimethylformamide, 20...
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Abstract
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