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A kind of preparation method of graphene-polypropylene carbonate green composite material

A polypropylene carbonate and composite material technology, which is applied in the field of composite film preparation, can solve the problems of poor solvent resistance, oxygen barrier, thermal stability, poor mechanical wear resistance, and low glass transition temperature, and achieves easy operation. , good solvent resistance, excellent biodegradability effect

Active Publication Date: 2016-08-24
广东顺德伟德创通智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polypropylene carbonate is a completely degradable green and environmentally friendly material synthesized from propylene oxide and carbon dioxide. It is considered to be one of the most promising environmentally friendly plastics, but the glass transition temperature of the material is low. Solvent resistance, oxygen barrier, thermal stability and mechanical wear resistance are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: a kind of preparation method of graphene-polypropylene carbonate green composite material, specifically:

[0018] Weighing of raw materials: weigh 1 part of graphene, 60 parts of polypropylene carbonate, and 70 parts of polyvinyl alcohol in parts by weight.

[0019] Preparation method: graphene surface pretreatment; high-speed mixing treatment of graphene and sodium dodecylbenzene sulfonate, high-speed mixing of the treated graphene mixture with silane coupling agent KH560 for secondary surface treatment; the pretreated Graphene, polypropylene carbonate and polyvinyl alcohol are mixed uniformly at high speed in a high-speed mixing bucket; put the uniformly mixed material into a twin-screw extruder with a preset temperature of 130°C and a screw speed of 150r / min for vacuum extrusion Composite material can be obtained by pelletizing.

Embodiment 2

[0020] Embodiment 2: a kind of preparation method of graphene-polypropylene carbonate green composite material, specifically:

[0021] Weighing of raw materials: 6 parts of graphene, 90 parts of polypropylene carbonate, and 80 parts of polyvinyl alcohol were weighed in parts by weight.

[0022] Preparation method: graphene surface pretreatment; high-speed mixing treatment of graphene and sodium dodecylbenzene sulfonate, high-speed mixing of the treated graphene mixture with silane coupling agent KH560 for secondary surface treatment; the pretreated Graphene, polypropylene carbonate and polyvinyl alcohol are mixed uniformly at high speed in a high-speed mixing bucket; put the uniformly mixed material into a twin-screw extruder with a preset temperature of 170°C and a screw speed of 250r / min for vacuum extrusion Composite material can be obtained by pelletizing.

Embodiment 3

[0023] Embodiment 3: a kind of preparation method of graphene-polypropylene carbonate green composite material, specifically:

[0024] Weighing of raw materials: 3 parts of graphene, 75 parts of polypropylene carbonate and 75 parts of polyvinyl alcohol were weighed in parts by weight.

[0025] Preparation method: graphene surface pretreatment; high-speed mixing treatment of graphene and sodium dodecylbenzene sulfonate, high-speed mixing of the treated graphene mixture and silane coupling agent KH560 for secondary surface treatment; the pretreated Graphene, polypropylene carbonate and polyvinyl alcohol are mixed uniformly at high speed in a high-speed mixing bucket; put the uniformly mixed material into a twin-screw extruder with a preset temperature of 155°C and a screw speed of 200r / min for vacuum extrusion Composite material can be obtained by pelletizing.

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Abstract

The invention provides a preparation method of a green graphene-poly(propylene carbonate) composite material. The method comprises the following steps: pretreating the surface of graphene, carrying out high-speed mixing treatment on pretreated graphene as well as poly(propylene carbonate) and polyvinyl alcohol, and carrying out extrusion, vacuumizing and granulation. The composite film prepared by the method has excellent degradable quality of poly(propylene carbonate) and also has better solvent resistance, oxygen isolation property, thermal stability and mechanical wear resistance.

Description

technical field [0001] The invention relates to the field of preparation of composite films, in particular to a method for preparing a graphene-polypropylene carbonate green composite material. Background technique [0002] Graphene oxide is a functionalized graphene with a quasi-two-dimensional layered molecular structure, containing many functional groups such as hydroxyl, carboxyl, carbonyl and epoxy, and has a high specific surface energy and good hydrophilicity and Mechanical properties, and good dispersion in polar solvents, this new type of functional nanomaterials has attracted more and more attention from scientists, and has become a research hotspot for scholars from all over the world. Graphene oxide is not only the starting point for large-scale synthesis of graphene, but also one of the most effective ways to realize the functionalization of graphene. By using graphene oxide as a new functional modifier to prepare or optimize various composite materials, it has ...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L69/00C08K9/06C08K9/04C08K3/04
Inventor 王强
Owner 广东顺德伟德创通智能科技有限公司
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