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Graphene/polyolefin plastic composite food packaging film and preparation method thereof

A technology for compounding food and packaging films, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of human health threats, lack of understanding of the impact, etc., and achieve excellent mechanical properties, excellent mechanical properties, and the effect of inhibiting migration.

Inactive Publication Date: 2016-11-16
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of contacting with food, additives will migrate into food, posing a certain threat to human health
At present, there are patents concerned with the improvement of graphene's mechanical properties, thermal conductivity, and electrical conductivity of plastic materials (CN 103980614 A, a graphene-filled polypropylene material and its preparation method; CN 104387757 A, a graphene composite thermally conductive plastic and its preparation method). Preparation method; CN 102321379 B, conductive graphene / polymer composite material), but for the preparation of graphene plastic composite food packaging film, and the impact of graphene on food packaging safety lack of understanding

Method used

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  • Graphene/polyolefin plastic composite food packaging film and preparation method thereof
  • Graphene/polyolefin plastic composite food packaging film and preparation method thereof
  • Graphene/polyolefin plastic composite food packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Graphene and low-density polyethylene (LDPE) are mixed evenly, and the graphene mass percentage content is 0.05%, 0.2% and 1% respectively, and the mixed material is sent into a twin-screw extruder, and the material is in the shear of the screw. Fully blended under cutting, mixing and conveying, and finally extruded and granulated through the die. This granulation process was repeated twice.

[0033] Twin-screw extruder parameter setting: the temperature of barrel zone 1 to zone 9 is: 150°C, 155°C, 155°C, 160°C, 160°C, 165°C, 165°C, 165°C, 165°C; die head temperature The temperature is 165°C; the screw speed is 150r / min.

[0034] Send the prepared masterbatch into the film blowing machine, and use the method of hollow blow molding to obtain the corresponding film. The temperature of Zone 1-4 of the film blowing machine is 155°C, 160°C, 165°C, 165°C respectively.

[0035] The graphene / low-density polyethylene composite film that obtains is carried out mechanical prope...

Embodiment 2

[0037] Configure 4 kinds of materials, UV-531+LDPE, UV-531+graphene+LDPE, UV-P+LDPE, UV-P+graphene+LDPE. Wherein the UV-531 and UV-P mass percentages are both 1%, and the graphene mass percentages are both 0.05%. The mixed material is sent into the twin-screw extruder, and the material is fully fused under the shearing, mixing and conveying of the screw, and finally extruded and granulated through the die. This granulation process was repeated twice.

[0038] Twin-screw extruder parameter setting: the temperature of barrel zone 1 to zone 9 is: 150°C, 155°C, 155°C, 160°C, 160°C, 165°C, 165°C, 165°C, 165°C; die head temperature The temperature is 165°C; the screw speed is 150r / min.

[0039] Send the prepared masterbatch into the film blowing machine, and use the method of hollow blow molding to obtain the corresponding film. The temperature of Zone 1-4 of the film blowing machine is 155°C, 160°C, 165°C, 165°C respectively.

[0040] The migration of UV-531 and UV-P to isoocta...

Embodiment 3

[0042]Configure 4 kinds of materials, Irgafos168+LDPE, Irgafos168+graphene+LDPE, Irganox1076+LDPE, Irganox1076+graphene+LDPE. Wherein the mass percent content of Irgafos168 and Irganox1076 is 1%, and the mass percent content of graphene is 0.05%. The mixed material is sent into the twin-screw extruder, and the material is fully fused under the shearing, mixing and conveying of the screw, and finally extruded and granulated through the die. This granulation process was repeated twice.

[0043] Twin-screw extruder parameter setting: the temperature of barrel zone 1 to zone 9 is: 150°C, 155°C, 155°C, 160°C, 160°C, 165°C, 165°C, 165°C, 165°C; die head temperature The temperature is 165°C; the screw speed is 150r / min.

[0044] Send the prepared masterbatch into the film blowing machine, and use the method of hollow blow molding to obtain the corresponding film. The temperature of Zone 1-4 of the film blowing machine is 155°C, 160°C, 165°C, 165°C respectively.

[0045] The migra...

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PUM

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Abstract

The invention belongs to the technical field of composite food packaging materials, and discloses a graphene / polyolefin plastic composite food packaging film as well as a preparation method and application thereof. The graphene / polyolefin plastic composite food packaging film of the invention contains 0.02-2 wt% of graphene. The present invention also provides a preparation method of the above film. The graphene / polyolefin plastic composite food packaging film of the invention improves the performance of the existing plastic film for food packaging, and has excellent mechanical properties by adding a small amount of graphene. The graphene in the graphene / polyolefin plastic composite food packaging film of the present invention effectively inhibits the migration of plastic additives to food and food simulants, which is of great significance for ensuring consumer safety and can be widely used in food and other fields.

Description

technical field [0001] The invention belongs to the technical field of composite food packaging materials, in particular to a graphene / polyolefin plastic composite food packaging film and its preparation method and application. Background technique [0002] Polyolefin plastics are widely used in real life because of their advantages such as low price and stable physical and chemical properties. However, polyolefin plastics have disadvantages such as low mechanical strength, easy deformation, low temperature resistance, and flammability. Studies have shown that the use of nanoparticles can improve the performance of polyolefin plastics (STANKOVICH S, et al.Graphene-based compositematerials[J].Nature,2006,442(7100):282-286.; Wang Lina, Liu Qingguang, Gong Fanghong. Research progress on preparation methods of polyethylene nanocomposites [J]. Plastic Science and Technology, 2007,35(2):84-87.). [0003] Graphene is the thinnest and hardest nanomaterial in the world due to its l...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K3/04B65D65/38
CPCC08K3/04B65D65/38C08J5/18C08J2323/06C08K2201/003C08L2203/16C08L2207/066
Inventor 林勤保单利君宋雪超王志伟
Owner JINAN UNIVERSITY
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