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A kind of preparation method of grape cling film masterbatch containing rare earth complex

A technology of rare earth complexes and rare earth compounds, which is applied in the field of preparation of grape cling film master batches, can solve the problems of unsuitability for general application, high cost, residual toxicity, etc., and achieve the effects of strengthening antibacterial and fresh preservation effects, material safety, and reducing costs

Active Publication Date: 2017-11-10
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the physical method is non-toxic and relatively effective, it is costly and requires specific equipment conditions, which is not suitable for general application; and the use of chemicals as preservatives also involves problems such as residual toxicity of some drugs

Method used

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  • A kind of preparation method of grape cling film masterbatch containing rare earth complex
  • A kind of preparation method of grape cling film masterbatch containing rare earth complex
  • A kind of preparation method of grape cling film masterbatch containing rare earth complex

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]The components of the masterbatch consist of 5.94kg of linear low-density polyethylene, 1.4kg of tourmaline powder, 2.2kg of rare earth complexes, 0.25kg of diatomaceous earth, 0.11kg of oleic acid amide, and 0.10kg of sodium stearate.

[0037] Masterbatch is prepared according to the following steps:

[0038] 1. Preparation of rare earth complexes

[0039] (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 1h, add the viscous liquid obtained from the reaction to 150 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.

[0040] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, neodymium, an...

Embodiment 2

[0047] The components of the masterbatch consist of 5.69kg of linear low-density polyethylene, 1.3kg of tourmaline powder, 2.5kg of rare earth complexes, 0.30kg of diatomaceous earth, 0.12kg of oleic acid amide, and 0.09kg of sodium stearate.

[0048] Masterbatch is prepared according to the following steps:

[0049] 1. Preparation of rare earth complexes

[0050] (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 1h, add the viscous liquid obtained from the reaction to 150 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.

[0051] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, neodymium, a...

Embodiment 3

[0058] 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, 0.30kg of diatomaceous earth, 0.11kg of oleic acid amide, and 0.10kg of sodium stearate.

[0059] Masterbatch is prepared according to the following steps:

[0060] 1. Preparation of rare earth complexes

[0061] (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 1h, add the viscous liquid obtained from the reaction to 150 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.

[0062] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, neodymium, a...

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Abstract

The invention relates to a preparation method for grape preservative film master batches containing rare earth complex.The grape preservative film master batches are formed by using LLDPE as carrier resin and adding tourmaline powder, the rare earth complex, kieselguhr, oleamide and sodium stearate through cladding dispersing, interface modification, material mixing, extruding and grain cutting.The molar ratio of lanthanum ions, yttrium ions, samarium ions and cerium ions in the rare earth complex is (2.90-3.00): (0.45-0.50): (0.95-1.05): (1.15-1.25).The master batches prepared through the method are added into LLDPE resin according to the proportion of 4-8%, the mixture is subjected to blow molding to form a film, and the film is used for retaining freshness of grapes and packaging the grapes and can restrain the respiration intensity and growth of microorganisms on the surface in the storing process, slow down the softening process and prolong the refreshing time by 7-10 days under the normal temperature condition.

Description

technical field [0001] The invention relates to a preparation method of a functional plastic film masterbatch, in particular to a preparation method of a grape cling film masterbatch containing a rare earth complex. Background technique [0002] Grape (Vitis vinifera L.) Vitis vinifera L. is a woody vine plant belonging to the grape family. Grape is one of the four major fruits in my country. Grape is not only delicious, but also has high nutritional value. The sugar content of grapes in ripe berries is as high as 10% to 30%, mainly glucose. A variety of fruit acids in grapes are helpful for digestion. Eating more grapes can strengthen the spleen and stomach. Grapes contain minerals such as calcium, potassium, phosphorus, iron, vitamin B1, vitamin B2, vitamin B6, vitamin C, and vitamin P. beneficial. Grapes are one of the least storable fruits among berries. After harvesting, grapes are prone to dehydration, threshing, and rot and deterioration when placed at room tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L5/00C08K13/06C08K9/04C08K3/28C08K3/34C08K5/098C08J3/22
CPCC08J2323/08C08J2423/08C08L23/0815C08L2203/16C08L5/00C08K13/06C08K9/08C08K3/28C08K3/346C08K5/098C08J3/226
Inventor 游瑞云杨裕金卢圣钊
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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