Special fresh-keeping breathable film for fruits and vegetables and preparation method thereof
A breathing film, fruit and vegetable technology, which is applied to the special fresh-keeping breathing film for fruits and vegetables and its preparation field, can solve the problems of the supply of fruit and vegetable respiration, the increase of post-harvest loss rate, the increase of the cost of fruits and vegetables, etc., so as to reduce the breathing intensity, strengthen the gas interaction, reduce The effect of humidity
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Embodiment 1
[0028] (1) get zinc nitrate, add water and dilute to obtain the zinc nitrate solution that concentration is 30kg / L, in zinc nitrate solution, add calcium hydroxide, graphene, water, stir 30min to obtain mixed solution; Zinc nitrate, calcium hydroxide, graphene The water mass ratio is 1:5:3:35, the mixed solution is suction filtered for 1h, and a filter cake is obtained after solid-liquid separation; the filter cake is washed and filtered once to obtain a water-containing filter cake; the water-containing filter cake is ground and dried to obtain inorganic Antibacterial agents;
[0029] (2) In parts by weight, 35 parts of polypropylene, 35 parts of metallocene polypropylene, 18 parts of high melt strength polypropylene, 1.4 parts of slip agent, 0.4 part of processing aid, 2 parts of antioxidant, inorganic antibacterial 0.3 parts of antistatic agent and 0.3 parts of antistatic agent, stirred at 60 r / min for 1 min, and then stirred at 130 r / min for 4 min to obtain a mixture; put ...
Embodiment 2
[0039] (1) get zinc nitrate, add water to dilute to obtain the zinc nitrate solution that concentration is 32kg / L, in zinc nitrate solution, add calcium hydroxide, graphene, water, stir 35min to obtain mixed solution; Zinc nitrate, calcium hydroxide, graphene The water mass ratio is 1:5:3:35, the mixed solution is suction filtered for 1.5h, and a filter cake is obtained after solid-liquid separation; the filter cake is washed and filtered once to obtain a water-containing filter cake; the water-containing filter cake is ground and dried to obtain Inorganic antibacterial agents;
[0040](2) In parts by weight, take 45 parts of polypropylene, 40 parts of metallocene polypropylene, 20 parts of high melt strength polypropylene, 1.5 parts of slip agent, 0.4 part of processing aid, 8 parts of antioxidant, inorganic 0.4 part of antibacterial agent and 0.4 part of antistatic agent, stirred at 65r / min for 1.5min, and then stirred at 135r / min for 4.5min to obtain a mixture; put the mixt...
Embodiment 3
[0050] (1) get zinc nitrate, add water and dilute to obtain the zinc nitrate solution that concentration is 35kg / L, in zinc nitrate solution, add calcium hydroxide, graphene, water, stir 40min to obtain mixed solution; Zinc nitrate, calcium hydroxide, graphene The water mass ratio is 3:12:8:80, the mixed solution is suction filtered for 2h, and a filter cake is obtained after solid-liquid separation; the filter cake is washed and filtered twice to obtain a water-containing filter cake; the water-containing filter cake is ground and dried to obtain inorganic Antibacterial agents;
[0051] (2) In parts by weight, take 60 parts of polypropylene, 45 parts of metallocene polypropylene, 22 parts of high melt strength polypropylene, 1.6 parts of slip agent, 1.6 parts of processing aid, 1.5 parts of antioxidant, inorganic 0.5 part of antibacterial agent, 0.5 part of antistatic agent, stirred at 70r / min for 2min, and then stirred at 140r / min for 5min to obtain a mixture; put the mixtur...
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