Preparation method of rare-earth-complex-containing juicy peach preservative film master batch
The technology of rare earth complex and rare earth compound is applied in the field of preparation of peach fresh-keeping film masterbatch, which can solve problems such as unsolved problems, and achieve the effect of strengthening antibacterial fresh-keeping effect, material safety and abundant resources.
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Embodiment 1
[0034] The components of the masterbatch consist of 5.89kg of linear low-density polyethylene, 1.2kg of tourmaline powder, 2.4kg of rare earth complexes, 0.3kg of diatomaceous earth, 0.11kg of oleic acid amide, and 0.10kg of sodium stearate.
[0035] Masterbatch is prepared according to the following steps:
[0036] 1. Preparation of rare earth complexes
[0037] (1) Dissolve 2kg chitin in 60L acetic acid solution, stir evenly, add 80L methanol, the solution is no longer viscous, add 1L acetic anhydride, react at 30°C for 1 hour, then add the viscous liquid obtained from the reaction to 150L In ethanol, a precipitate is formed, the solid is filtered out, washed three times with absolute ethanol, dissolved in acetic acid solution, and the insoluble matter is filtered off to obtain an acetylated chitosan solution.
[0038] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, neo...
Embodiment 2
[0045] The components of the masterbatch consist of 6.36kg of linear low-density polyethylene, 1.0kg of tourmaline powder, 2.2kg of rare earth complexes, 0.25kg of diatomaceous earth, 0.11kg of oleic acid amide, and 0.08kg of sodium stearate.
[0046] Masterbatch is prepared according to the following steps:
[0047] 1. Preparation of rare earth complexes
[0048] (1) Dissolve 2kg chitin in 60L acetic acid solution, stir evenly, add 80L methanol, the solution is no longer viscous, add 1L acetic anhydride, react at 30°C for 1 hour, then add the viscous liquid obtained from the reaction to 150L In ethanol, a precipitate is formed, the solid is filtered out, washed three times with absolute ethanol, dissolved in acetic acid solution, and the insoluble matter is filtered off to obtain an acetylated chitosan solution.
[0049] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, ne...
Embodiment 3
[0056] The components of the masterbatch consist of 5.98kg of linear low-density polyethylene, 1.1kg of tourmaline powder, 2.4kg of rare earth complexes, 0.30kg of diatomaceous earth, 0.12kg of oleic acid amide, and 0.10kg of sodium stearate.
[0057] Masterbatch is prepared according to the following steps:
[0058] 1. Preparation of rare earth complexes
[0059] (1) Dissolve 2kg chitin in 60L acetic acid solution, stir evenly, add 80L methanol, the solution is no longer viscous, add 1L acetic anhydride, react at 30°C for 1 hour, then add the viscous liquid obtained from the reaction to 150L In ethanol, a precipitate is formed, the solid is filtered out, washed three times with absolute ethanol, dissolved in acetic acid solution, and the insoluble matter is filtered off to obtain an acetylated chitosan solution.
[0060] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, ne...
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