Preparation method of cream flexible tube packaging material
A technology for packaging materials and tubes, which is applied in the field of preparation of cream tube packaging materials, can solve the problems of large influence on cosmetic performance, corrosion resistance, stable mechanical properties, and insufficient air permeability, etc., to facilitate large-scale promotion , Raw materials are easy to obtain, and the preparation process is simple
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Embodiment 1
[0021] S1: Add graphite oxide into deionized water according to the solid-to-liquid ratio of 1:8, and ultrasonically treat at 30°C for 20 minutes to obtain a dispersion;
[0022] S2: Mix 40 parts of dispersion liquid, 3 parts of 0.02mol / L silver nitrate and 10 parts of glycerol in step S1, stir at a temperature of 60°C for 20 minutes, then let stand for 1 hour, centrifuge and wash to obtain silver-loaded graphene ;
[0023] S3: Mix 30 parts of PE, 25 parts of polycarbonate and 20 parts of epoxy resin, react at a temperature of 100°C for 10 minutes, then add 20 parts of glycerol, 5 parts of polypropylene fiber, 5 parts of glass fiber, and 2 parts of nano Attapulgite and 1 part of nano silicon dioxide, continue to stir and react for 20 minutes;
[0024] S4: Lower the temperature to 70°C, add 8 parts of the silver-loaded graphene in step S2, and put them into the twin-screw extruder together, set the temperature in the first zone to 140°C, the temperature in the second zone to 1...
Embodiment 2
[0027] S1: Add graphite oxide into deionized water according to the solid-to-liquid ratio of 1:10, and ultrasonically treat at 40°C for 30 minutes to obtain a dispersion;
[0028] S2: Mix 50 parts of dispersion liquid, 5 parts of 0.04mol / L silver nitrate and 20 parts of glycerol in step S1, stir for 30 minutes at a temperature of 80° C. and then let it stand for 3 hours. After centrifugation and washing, silver-loaded graphene is obtained. ;
[0029] S3: Mix 40 parts of PE, 35 parts of polycarbonate and 30 parts of epoxy resin, react at a temperature of 120°C for 20 minutes, then add 30 parts of glycerol, 10 parts of polypropylene fiber, 10 parts of glass fiber, 5 parts of nano Attapulgite and 3 parts of nano silicon dioxide, continue to stir and react for 40min;
[0030] S4: Lower the temperature to 80°C, add 12 parts of the silver-loaded graphene in step S2, and put them into the twin-screw extruder together, set the temperature in the first zone to 150°C, the temperature i...
Embodiment 3
[0033] S1: Add graphite oxide into deionized water according to the solid-to-liquid ratio of 1:8, and ultrasonically treat at 33°C for 25 minutes to obtain a dispersion;
[0034] S2: Take 42 parts of dispersion liquid in step S1, 3 parts of 0.03mol / L silver nitrate and 13 parts of glycerol, mix them, stir at 65°C for 23 minutes, then let stand for 1.5 hours, centrifuge and wash to obtain silver-loaded graphite alkene;
[0035] S3: Mix 32 parts of PE, 27 parts of polycarbonate and 22 parts of epoxy resin, react at a temperature of 105°C for 13 minutes, then add 25 parts of glycerol, 6 parts of polypropylene fiber, 7 parts of glass fiber, and 3 parts of nano Attapulgite and 1 part of nano silicon dioxide, continue to stir and react for 25 minutes;
[0036] S4: Lower the temperature to 72°C, add 9 parts of the silver-loaded graphene described in step S2, and put them into the twin-screw extruder together, set the temperature in the first zone to 145°C, the temperature in the sec...
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