Method for preparing antibiotic fresh-keeping linear low density polyethylene film master batch

A linear low-density polyethylene film technology is applied in the field of preparation of functional plastic film masterbatches to achieve the effects of improving bacteriostatic and mildew-proofing effects, prolonging fresh-keeping period, improving melt fluidity and processing performance

Inactive Publication Date: 2008-08-27
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Searching a large number of patent documents and published research papers has not found that linear low-density polyethylene (LLDPE) is used as a carrier resin, and lanthanum oxide, silver-loaded zirconium phosphate, zinc-loaded zirconium phosphate, and polyethylene oxide are added to make antibacterial and fresh-keeping products. The report of linear low density polyethylene film masterbatch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Combine 13kg of lanthanum oxide with a purity of 99.9%, 10kg of silver-loaded zirconium phosphate with a silver content of 3.8%, and 11.5kg of zinc-loaded zirconium phosphate with a zinc content of 4.7% and place them in the mixer. The mixer speed is controlled to 250r / min and the temperature At 102°C, add 0.75kg of oleic acid amide to coat and disperse for 15min, then it becomes raw material I and put it in the mixer; put 22.5kg of silica with particle size of 2~5μm in the high-speed kneader, and control the speed of the kneader to 500r / min, temperature 105℃, kneading for 10 minutes, add 0.6kg of stearic acid monoglyceride, after 12 minutes of interface modification, it becomes raw material II and put it in a mixer to mix with raw material I, then add 45kg of LLDPE and 1.5kg of oxidized polyethylene, control mixing The speed of the machine is 120r / min, the temperature is 108°C, and the mixing is 8min; the mixed materials are placed in the twin-screw extruder, and the temp...

Embodiment 2

[0014] 11kg of lanthanum oxide with a purity of 99.9%, 9kg of silver-loaded zirconium phosphate with a silver content of 3.8%, and 10.5kg of zinc-loaded zirconium phosphate with a zinc content of 4.7% are mixed and placed in the mixer. The mixer speed is controlled to 250r / min and the temperature 101°C, add 0.6kg of oleic acid amide, coat and disperse for 15min, then become raw material I and put it in the mixer; put 21kg of silica with particle size of 2~5μm in the high-speed kneader, control the speed of the kneader to 500r / min , Temperature 104℃, kneading for 10 minutes, add 0.5kg of stearic acid monoglyceride, after 12 minutes of interface modification, it becomes raw material II and put it in the mixer to mix with raw material I, then add 42kg of LLDPE and 1.3kg of oxidized polyethylene, and control the mixer Rotation speed 120r / min, temperature 107℃, mixing for 8min; put the mixed materials in a twin-screw extruder, and control the temperature of the extruder barrel: 148℃ in...

Embodiment 3

[0016] Mix 14kg of lanthanum oxide with a purity of 99.9%, 11kg of silver-loaded zirconium phosphate with a silver content of 3.8%, and 12kg of zinc-loaded zirconium phosphate with a zinc content of 4.7% and place them in the mixer. The mixer speed is controlled to 250r / min and the temperature is 103 ℃, add 0.9kg of oleic acid amide to coat and disperse for 15min, then it becomes raw material I and put it in the mixer; put 24kg of silica with particle size of 2~5μm in the high-speed kneader, control the speed of the kneader to 500r / min, Temperature 106℃, kneading for 10 minutes, add 0.7kg of stearic acid monoglyceride, after 12 minutes of interface modification, it becomes raw material II and put in the mixer to mix with raw material I, then add 48kg of LLDPE and 1.7kg of oxidized polyethylene, and control the speed of the mixer 120r / min, temperature 109℃, mixing for 8min; put the mixed materials in a twin-screw extruder, and control the temperature of the extruder barrel: I zone ...

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Abstract

The invention relates to a preparation process of antibiotic refreshing linear low density polyethylene film master batch, which uses LLDPE as carrier resin, adds with lanthanum oxide, zirconium phosphate loaded with silver, zirconium phosphate loaded with zinc, oleamide, silica dioxide, octadecanoic acid monoglyceride and oxidized polyethylene, and is prepared through dispersing by coating, modifying interface, mixing material and extruding and pilleting, wherein LLDPE is 40-49 parts by weight, lanthanum oxide is 10-15 parts by weight, zirconium phosphate loaded with silver is 8-12 parts by weight, zirconium phosphate loaded with zinc is 10-13 parts by weight, oleamide is 0.5-1.2-0 parts by weight, silica dioxide20-25 parts by weight, octadecanoic acid monoglyceride is 0.4-0.8 parts by weight and oxidized polyethylene is 1.2-1.8 parts by weight. Master batch which is prepared by the process is added in LLDPE resin according to the proportion of 4-5%, and the air permeable quantity is increased 2-3 times compared with refreshing film with same thickness after prepared into film through film blowing molding, and the film is used to the refreshing package of fruits and vegetation, which can inhibit the generation of surface microbe, reduces fruit and vegetation from decaying, and prolongs refreshing time 15-45 days.

Description

Technical field [0001] The invention relates to a preparation method of functional plastic film master batches, in particular to a preparation method of antibacterial fresh-keeping linear low-density polyethylene film master batches. Background technique [0002] my country is a big producer and consumer of fruits and vegetables, and its output ranks first in the world. However, due to the relatively backward traditional packaging and fresh-keeping technology, as much as 30% of fruits and vegetables deteriorate and rot during storage, transportation, and marketing, causing significant economic losses and serious environmental pollution. In order to reduce the deterioration and decay of fruits and vegetables, and to extend the preservation period, some businesses have adopted the method of adding preservatives to solve the problem. As a result, hygiene and safety accidents occur from time to time, which seriously affect people's health. [0003] At present, most of the fresh-keepi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/20C08J5/18B29C47/92B29C47/40C08K3/22C08K5/10C08K3/32C08K3/36C08L23/30B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92895B29C2948/92904
Inventor 张华集张雯
Owner FUJIAN NORMAL UNIV
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