Preparation method of color offset printing newsprint
A technology for newsprint and offset printing, applied in the field of papermaking, can solve the problems of removal and difficult flotation of ink particles, and achieve the effects of cost saving, hydrophobic and lipophilic specific surface area, and increased contact
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Embodiment 1
[0028] The talc nanoparticles supported by MOF airgel comprise the following steps:
[0029] C1. Activate 25mg of UIO-66-COOH nanoparticles at 150°C for 3h under vacuum, then disperse in 9.5mL of dimethyl sulfoxide to obtain a suspension, stir for 30min, add 0.12mL of octylamine dropwise, and sonicate at room temperature After 24 hours, centrifugation, washing with hexane three times, and drying at 80°C, hydrophobic UIO-66-COOH nanoparticles were obtained;
[0030] C2. Disperse hydrophobic 10mg UIO-66-COOH nanoparticles and 20mg graphene into 3mL deionized water respectively, and sonicate at 25°C for 30min, then slowly add 120mg ascorbic acid to the graphene suspension, and mix the solution with UIO-66-COOH suspensions were mixed, and the suspensions were aged at 40°C for 12 hours to form hydrogels, which were washed and freeze-dried to obtain MOF aerogels;
[0031] C3. Ultrasound disperses 190 mg of MOF airgel in 195 mL of deionized water for 30 minutes to obtain a uniform a...
Embodiment 2
[0034] The talc nanoparticles supported by MOF airgel comprise the following steps:
[0035] C1. Activate 30 mg of UIO-66-COOH nanoparticles at 150°C for 4 h under vacuum, then disperse in 10 mL of dimethyl sulfoxide to obtain a suspension, stir for 30 min, add 0.2 mL of octylamine dropwise, and sonicate at room temperature for 24 h , after centrifugation, washing with hexane three times, and drying at 80°C, hydrophobic UIO-66-COOH nanoparticles were obtained;
[0036] C2. Disperse 30mg of hydrophobic UIO-66-COOH nanoparticles and 25mg of graphene into 5mL of deionized water respectively, and sonicate at 25°C for 30min, then slowly add 125mg of ascorbic acid to the graphene suspension, and mix the solution with UIO-66-COOH suspensions were mixed, and the suspensions were aged at 40°C for 12 hours to form hydrogels, which were washed and freeze-dried to obtain MOF aerogels;
[0037]C3. Ultrasound disperses 200mg MOF airgel in 200mL deionized water for 30min to prepare a unifor...
Embodiment 3
[0040] The talc nanoparticles supported by MOF airgel comprise the following steps:
[0041] C1. Activate 35 mg of UIO-66-COOH nanoparticles at 150°C for 5 h under vacuum, then disperse in 10.5 mL of dimethyl sulfoxide to obtain a suspension, stir for 30 min, add 0.23 mL of octylamine dropwise, and sonicate at room temperature After 24 hours, centrifugation, washing with hexane three times, and drying at 80°C, hydrophobic UIO-66-COOH nanoparticles were obtained;
[0042] C2. Disperse 55mg of hydrophobic UIO-66-COOH nanoparticles and 30mg of graphene into 7mL of deionized water respectively, and sonicate for 30min at 25°C, then slowly add 130mg of ascorbic acid to the graphene suspension, and mix the solution with UIO-66-COOH suspensions were mixed, and the suspensions were aged at 40°C for 12 hours to form hydrogels, which were washed and freeze-dried to obtain MOF aerogels;
[0043] C3. Ultrasound disperses 210mg of MOF airgel in 205mL of deionized water for 30min to prepare...
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