Unlock instant, AI-driven research and patent intelligence for your innovation.

A carbon dioxide-propylene oxide copolymer-based paper-plastic composite film and preparation method thereof

A technology of propylene oxide and carbon dioxide, which is applied in the field of packaging materials, can solve the problems of limited application range, difficulty in recycling, non-biodegradable polypropylene, etc.

Active Publication Date: 2021-12-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Paper-plastic composite materials include paper layer and plastic film layer, but at present, double-drawn polypropylene (BOPP) plastic film and paper are used for compounding. On the one hand, because polypropylene material has low polarity and paper cannot be directly compounded, an adhesive is required For bonding BOPP film and paper, the adhesive uses organic solvents, causing environmental pollution, and the preparation process is not environmentally friendly; on the other hand, polypropylene is not biodegradable, and it is difficult to recycle and reuse after compounding with paper. The environmental impact is becoming more and more serious and has received widespread attention. Biodegradable materials can be decomposed by microorganisms after use and finally decomposed into carbon dioxide and water. Using biodegradable materials to replace existing non-degradable plastics is an effective way to fundamentally solve white pollution.
[0003] At present, most of the paper-plastic composites made of biodegradable materials are casted into films and directly composited with paper. Due to the lack of thermal stability of biodegradable materials, the processing temperature required to prepare paper-plastic composite films by casting methods is high. Biodegradable materials have been thermally degraded, which affects the performance of the material, and the temperature of the casting film is high when it is directly compounded with paper. The casting temperature exceeds 200°C, and the paper is prone to yellowing. In addition, this paper-plastic composite method cannot be used for printed matter. , which greatly limits its scope of application, especially for high-end paper-plastic composite applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A carbon dioxide-propylene oxide copolymer-based paper-plastic composite film and preparation method thereof
  • A carbon dioxide-propylene oxide copolymer-based paper-plastic composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0064] The present invention also provides a preparation method of the carbon dioxide-propylene oxide copolymer-based paper-plastic composite film described in the above technical scheme, comprising the following steps:

[0065] a) The modified material of the inner PPC base film layer and the modified material of the outer PPC base film layer are melted and blown through a double-layer blown film equipment to obtain a PPC composite film;

[0066] The inner layer PPC base film layer modified material is prepared by the following methods: after mixing PPC, PBAT and a chain extender, melt granulation is performed to obtain the inner layer PPC base film layer modified material;

[0067] The outer layer PPC base film layer modified material is prepared in the following manner: after mixing PPC and the slip agent, melt granulation is performed to obtain the outer layer PPC base film layer modified material;

[0068] b) The paper and the PPC composite film are first hot-pressed and ...

Embodiment 1

[0087] 1.1 Raw materials

[0088] Inner material:

[0089] 20 parts of PPC (molecular weight 150kg / mol, molecular weight distribution 2.8, catalyst residue 26ppm);

[0090] PBAT (molecular weight 50 kg / mol, molecular weight distribution 2.2) 80 copies;

[0091] Methyl acrylate-glycidyl methacrylate copolymer 0.2 part.

[0092] Outer material:

[0093] 99 parts of PPC (molecular weight 150kg / mol, molecular weight distribution 2.8, catalyst residue 26ppm);

[0094] Erucamide 1 serving.

[0095] 1.2 Preparation

[0096] S1. Mix the PPC, PBAT and the chain extender in a mixer, and undergo twin-screw melting and granulation processing to obtain a modified material for the inner PPC base film layer.

[0097] S2. Mix the PPC and the slip agent in a mixer, and then process it through twin-screw melting and granulation to obtain a modified material for the outer PPC base film layer.

[0098]In steps S1 and S2, the granulation temperature is: 142°C in the first zone, 152°C in the...

Embodiment 2

[0104] 1.1 Raw materials

[0105] Inner material:

[0106] 20 parts of PPC (molecular weight 150kg / mol, molecular weight distribution 2.8, catalyst residue 26ppm);

[0107] PBAT (molecular weight 50 kg / mol, molecular weight distribution 2.2) 80 copies;

[0108] Glycidyl methacrylate homopolymer 0.2 part.

[0109] Outer material:

[0110] 99 parts of PPC (molecular weight 150kg / mol, molecular weight distribution 2.8, catalyst residue 26ppm);

[0111] Erucamide 1 serving.

[0112] 1.2 Preparation

[0113] S1. Mix the PPC, PBAT and the chain extender in a mixer, and undergo twin-screw melting and granulation processing to obtain a modified material for the inner PPC base film layer.

[0114] S2. Mix the PPC and the slip agent in a mixer, and then process it through twin-screw melting and granulation to obtain a modified material for the outer PPC base film layer.

[0115] In steps S1 and S2, the granulation temperature is: 142°C in the first zone, 152°C in the second zone,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

The invention provides a carbon dioxide-propylene oxide copolymer-based paper-plastic composite film and a preparation method thereof. In the paper-plastic composite film provided by the present invention, the plastic film layer is a PPC composite film layer, and the PPC composite film layer includes two inner and outer layers, and the raw materials of the inner layer include: 15-25 parts of PPC, 75-85 parts of PBAT, chain extension 0.2-0.5 parts of agent; the raw materials of the outer layer include: 98-99.9 parts of PPC, 0.1-2 parts of slip agent. The combination of specific components of the above-mentioned inner layer raw materials makes it possible to directly compound with paper under appropriate hot-pressing temperature and pressure without adhesives and obtain good bonding force; the specific component matching of the above-mentioned outer layer raw materials makes it difficult for the outer layer to bond with paper Iron bonding can realize PPC composite film and paper to be directly laminated by hot pressing roller equipment; moreover, the outer layer and inner layer materials have a better matching, which improves the processability and improves the mechanical properties of the composite film.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a carbon dioxide-propylene oxide copolymer-based paper-plastic composite film and a preparation method thereof. Background technique [0002] Paper-plastic composite material has the characteristics of high strength, good waterproof, beautiful appearance, and can effectively protect printed matter. It is one of the most popular packaging materials and is widely used in brochures, advertising covers, business cards, books, etc. Paper-plastic composite materials include paper layer and plastic film layer, but at present, double-drawn polypropylene (BOPP) plastic film and paper are used for compounding. On the one hand, because polypropylene material has low polarity and paper cannot be directly compounded, an adhesive is required For bonding BOPP film and paper, the adhesive uses organic solvents, causing environmental pollution, and the preparation process is not environmentally...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/10B32B27/36B32B29/00B32B37/06B32B37/10C08L67/02C08L69/00C08L33/08C08L33/14C08K5/20C08K5/098C08J5/18
CPCB32B27/08B32B27/10B32B27/365B32B27/36B32B29/002B32B37/06B32B37/10C08J5/18C08J2367/02C08J2469/00C08J2433/08C08J2433/14C08K5/098C08K5/20
Inventor 高凤翔董艳磊赵逊周庆海王献红
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI