Preparation method for environment-friendly automotive adhesive
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example 1
[0020]First, weigh 300g of peanut shells, after manual selection and removal of impurities, wash 3 times with deionized water, transfer them to a tissue grinder, crush them into 0.1cm pieces, then place them in an oven at 105°C, and dry them until constant Then use a mortar to grind the dried peanut shell fragments into powder; then place the above-mentioned powder in a Soxhlet extractor filled with 300mL of absolute ethanol and 400mL of toluene, and reflux for 2h at 60°C , filtered, and the resulting filter residue was washed 3 times with absolute ethanol, then poured into an oven at 80°C, and dried for 20 minutes to obtain pretreated peanut shell powder; then 1g of Cellulase and 60g of the above-mentioned pretreated peanut shell powder, start the stirrer, set the speed at 300r / min, add dropwise citric acid solution under stirring, adjust the pH of the mixed solution in the beaker to 4.5, and heat up to 45°C. Stir and react for 3 hours, after the materials in the reaction ket...
example 2
[0023] First, weigh 400g of peanut shells, after manual selection and removal of impurities, wash them with deionized water for 4 times, transfer them to a tissue grinder, and crush them into 0.2cm pieces, then place them in an oven at 108°C, and dry them until constant Then use a mortar to grind the dried peanut shell fragments into powder; then put the above-mentioned powder into a Soxhlet extractor filled with 300mL of absolute ethanol and 400mL of toluene, and reflux for 3h at 65°C , filtered, and the resulting filter residue was washed 4 times with absolute ethanol, then poured into an oven at 85°C, and dried for 25 minutes to obtain pretreated peanut shell powder; then, 1.5 g cellulase and 70 g of the above-mentioned pretreated peanut shell powder, start the stirrer, set the speed at 400 r / min, and add the citric acid solution dropwise under stirring, adjust the pH of the mixed solution in the beaker to 4.8 and warm to 48 ° C, Stirring and reacting for 4 hours, after the...
example 3
[0026] First, weigh 500g of peanut shells, after manual sorting and removal of impurities, wash them with deionized water for 5 times, transfer them to a tissue grinder, crush them into 0.3cm pieces, then place them in an oven at 110°C, and dry them until constant Then use a mortar to grind the dried peanut shell fragments into powder; then place the above-mentioned powder in a Soxhlet extractor filled with 300mL of absolute ethanol and 400mL of toluene, and reflux for 4h at 70°C , filtered, and the resulting filter residue was washed 5 times with absolute ethanol, then poured into a 90°C oven, and dried for 30 minutes to obtain pretreated peanut shell powder; then 2g of Cellulase and 80g of the above-mentioned pretreated peanut shell powder, start the stirrer, set the rotation speed to 500r / min, add dropwise citric acid solution under the stirring state, adjust the pH of the mixed solution in the beaker to 5.0, and heat up to 50°C. Stirring and reacting for 5 hours, after the...
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