Preparation method of antifogging preservative film
A fresh-keeping film and anti-fog technology, which is applied in the field of anti-fog fresh-keeping film preparation, can solve the problems of unfavorable environmental green sustainable development, accelerate the growth and reproduction of microorganisms, and cannot meet the needs of fresh-keeping, so as to improve adsorption and hydrophilicity, prolong Anti-fog time, the effect of improving interface compatibility
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Embodiment 1
[0017] A method for preparing an anti-fog preservative film, comprising the following steps:
[0018] (1) Put 5 parts of zeolite in parts by weight into a vacuum drying oven, dry at 100°C for 3 hours, transfer to 30% acetic acid solution, perform ultrasonic treatment at 10°C for 1 hour, then perform suction filtration, and use distilled water After washing for 2 times, transfer directly to the pulverizer without drying, crush to 100 mesh, then use low-temperature plasma treatment for 5 seconds, transfer to vacuum dryer at 30°C and dry until the water content is 10%;
[0019] (2) Add 10 parts of starch-acrylic acid graft copolymer to distilled water 30 times its volume, raise the temperature to 50°C, stir and dissolve at 500 rpm for 20 minutes, then add the zeolite obtained in step (1) and 3 parts of anti-fogging agent, Reduce the speed to 300rpm, keep stirring at the above temperature for 1 hour, stop stirring, turn to soak for 4 hours, then cool, filter, and dry in a vacuum o...
Embodiment 2
[0026] A method for preparing an anti-fog preservative film, comprising the following steps:
[0027] (1) Put 8 parts by weight of zeolite in a vacuum drying oven, dry at 105°C for 4h, transfer to 40% acetic acid solution, ultrasonically treat at 15°C for 2h, then perform suction filtration, and use distilled water After washing 3 times, transfer directly to the pulverizer without drying, crush to 110 mesh, then use low-temperature plasma treatment for 6 seconds, transfer to vacuum dryer at 40°C and dry until the water content is 15%;
[0028] (2) Add 15 parts of starch-acrylic acid graft copolymer to distilled water 50 times its volume, raise the temperature to 60°C, stir and dissolve at 550 rpm for 30 minutes, then add the zeolite obtained in step (1) and 4 parts of anti-fogging agent, Reduce the speed to 350rpm, keep stirring at the above temperature for 2 hours, stop stirring, turn to soak for 5 hours, then cool, filter, and dry in a vacuum oven at 65°C;
[0029] (3) Add ...
Embodiment 3
[0035] A method for preparing an anti-fog preservative film, comprising the following steps:
[0036] (1) Put 10 parts by weight of zeolite in a vacuum drying oven, dry at 110°C for 5 hours, transfer to 50% acetic acid solution, ultrasonicate at 20°C for 2 hours, then perform suction filtration, and use distilled water After washing 3 times, transfer directly to the pulverizer without drying, crush to 120 mesh, then use low-temperature plasma treatment for 7s, transfer to vacuum dryer at 50°C and dry until the water content is 20%;
[0037] (2) Add 20 parts of starch-acrylic acid graft copolymer to distilled water 60 times its volume, raise the temperature to 70°C, stir and dissolve at 600 rpm for 40 minutes, then add the zeolite obtained in step (1) and 5 parts of anti-fogging agent, Reduce the speed to 400rpm, keep stirring at the above temperature for 2 hours, stop stirring, turn to soak for 5 hours, then cool, filter, and dry in a vacuum oven at 70°C;
[0038] (3) Add 80 ...
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