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 reducing deterioration and decay, prolonging fresh-keeping period, and improving melt fluidity and processing performance.

Inactive Publication Date: 2011-04-20
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] 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% were compounded and placed in a mixer. The mixer speed was controlled to 250r / min, and the temperature At 102°C, add 0.75 kg of oleic acid amide to coat and disperse for 15 minutes to form raw material I and put it in a mixer; put 22.5 kg of silicon dioxide with a particle size of 2 to 5 μm in a high-speed kneader, and control the speed of the kneader to 500r / min, temperature 105°C, knead for 10 minutes, add 0.6 kg of monoglyceride stearate, modify the interface for 12 minutes to form raw material II and put it in a mixer to mix with raw material I, then add 45 kg of LLDPE and 1.5 kg of oxidized polyethylene, and control the mixing The speed of the machine is 120r / min, the temperature is 108°C, and the mixture is mixed for 8 minutes; the mixed material is placed in a twin-screw ...

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% were compounded and placed in a mixer, and the speed of the mixer was controlled to 250r / min. 101°C, add 0.6 kg of oleic acid amide to coat and disperse for 15 minutes to form raw material I and put it in a mixer; put 21 kg of silicon dioxide with a particle size of 2 to 5 μm in a high-speed kneader, and control the speed of the kneader to 500r / min , temperature 104°C, after kneading for 10 minutes, add 0.5 kg 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 42 kg of LLDPE, 1.3 kg of oxidized polyethylene, and control the mixer Rotation speed 120r / min, temperature 107°C, mixing for 8 minutes; put the mixed material in a twin-screw extruder, and control the barrel tempera...

Embodiment 3

[0016] 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% were compounded and placed in a mixer. The speed of the mixer was controlled at 250r / min, and the temperature was 103 ℃, add 0.9 kg of oleic acid amide to coat and disperse for 15 minutes to form raw material I and place it in a mixer; place 24 kg of silicon dioxide with a particle size of 2 to 5 μm in a high-speed kneader, and control the kneader speed to 500 r / min. The temperature is 106°C, after kneading for 10 minutes, add 0.7 kg of stearic acid monoglyceride, and after 12 minutes of interface modification, it becomes raw material II and puts it in a mixer to mix with raw material I, then adds 48 kg of LLDPE and 1.7 kg of oxidized polyethylene, and controls the speed of the mixer 120r / min, temperature 109°C, mixing for 8min; put the mixed material in a twin-screw extruder, and ...

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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 isincreased 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 a functional plastic film master batch, in particular to a preparation method of an antibacterial and fresh-keeping linear low-density polyethylene film master batch. Background technique [0002] my country is a big country in the production and consumption of fruits and vegetables, and its output ranks first in the world. However, due to the relative backwardness of traditional packaging and fresh-keeping technology, up to 30% of fruits and vegetables deteriorate and rot during storage, transportation and sales, causing major economic losses and serious environmental pollution. In order to reduce the deterioration and rot of fruits and vegetables and prolong the fresh-keeping period, some businesses adopt the method of adding preservatives to solve the problem, resulting in frequent occurrence of health and safety accidents and seriously affecting people's health. [0003] At present, most of the fres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/20C08L23/06C08J5/18B29C47/92B29C47/40C08K3/22C08K5/10C08K3/32C08K3/36C08L23/30B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92895B29C2948/92904
Inventor 张华集张雯
Owner FUJIAN NORMAL UNIV
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