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Method for preparing polymer/inorganic nano particle composite material

A technology of inorganic nanoparticles and composite materials, which is applied in the processing field of preparing polymer/inorganic nanoparticle composite materials, and can solve problems such as difficult to obtain composite materials with nanostructures, so as to broaden the scope of application, benefit environmental protection, and have a wide range of applications Effect

Active Publication Date: 2014-04-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, due to the high surface activity of nanoparticles, the nanoparticles themselves are very easy to aggregate and agglomerate, and it is difficult to obtain composite materials with nanostructures by conventional methods.

Method used

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  • Method for preparing polymer/inorganic nano particle composite material
  • Method for preparing polymer/inorganic nano particle composite material
  • Method for preparing polymer/inorganic nano particle composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A raw material of polypropylene / inorganic nanocomposite comprises the following components and their contents in parts by weight:

[0057] components weight ratio Isotactic polypropylene (PP, as a crystalline polymer matrix) 97 Montmorillonite (MMT, layered silicate nanofiller) 3

[0058] Note: The above components do not contain compatibilizers.

[0059] The first step, at first prepare raw materials by above-mentioned components;

[0060] In the second step, first place the nano-filled montmorillonite (MMT) in an oven at 120°C for 12 hours;

[0061] In the third step, the isotactic polypropylene obtained in the second step and the dry montmorillonite are placed in a high mixer and premixed for 6 minutes at a speed of 150 rpm to obtain the isotactic polypropylene / montmorillonite premix thing;

[0062] Then, put the obtained isotactic polypropylene / montmorillonite premix into a twin-screw extruder for melt blending, extruding, and granulat...

Embodiment 2

[0067] A raw material of polypropylene / inorganic nanocomposite comprises the following components and their contents in parts by weight:

[0068] components weight ratio Isotactic polypropylene (PP, as a crystalline polymer matrix) 90 Montmorillonite (MMT, layered silicate nanofiller) 5 Polypropylene grafted maleic anhydride (PP-MA, as compatibilizer) 5

[0069] The first step, at first prepare raw materials by above-mentioned components;

[0070] In the second step, the nano-filler montmorillonite (MMT) was first placed in a 120°C oven for 12 hours, and the compatibilizer polypropylene grafted maleic anhydride was placed in an 80°C oven for 12 hours;

[0071] In the third step, the isotactic polypropylene, dry montmorillonite and compatibilizer obtained in the second step are placed in a high mixer and pre-mixed for 5 minutes at a speed of 100 rpm to obtain isotactic polypropylene, montmorillonite The premix of declay and compatibilizer, nam...

Embodiment 3

[0077] A raw material of polypropylene / inorganic nanocomposite comprises the following components and their contents in parts by weight:

[0078] components weight ratio Isotactic polypropylene (PP, as a crystalline polymer matrix) 99.5 Graphene (R-GO, as a nanofiller) 0.5

[0079] Note: The above components do not contain compatibilizers.

[0080] The first step, at first prepare raw materials by above-mentioned components;

[0081] In the second step, the nano-filled graphene (R-GO) was dried in an oven at 80°C for 12 hours;

[0082] In the third step, the isotactic polypropylene obtained in the second step and the dry graphene are placed together in a high mixer and premixed for 5 minutes, and its rotating speed is 100 rpm to obtain an isotactic polypropylene / graphene premix;

[0083] Then, the obtained premix is ​​put into a twin-screw extruder for melt blending, extruding and granulating to obtain isotactic polypropylene / graphene premixed com...

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Abstract

The invention discloses a method for preparing a polymer / inorganic nano particle composite material. The method is characterized by comprising the following steps: after mixing and pelleting a polymer and an inorganic nano particle according to a certain ratio, conveying aggregates through an extruder in a bidirectional stretching melt mixing and forming integrated device, preparing aggregates or a sheet through plasticizing and melting and under a bidirectional stretching-shearing acting force of a bidirectional stretching melt mixer, wherein the aggregates or the sheet is better in inorganic nano particle dispersing property, and excellent in performance. The polymer / inorganic nano particle composite material overcomes the defects of difficulty in dispersing and poor compatibility of the inorganic nano particle in a polymer melt; and the polymer / inorganic nano particle composite material has better mechanical property, barrier property, heat stability performance, and conductive property. The method is simple and easy to operate, simple in equipment, and convenient to produce in large scales.

Description

technical field [0001] The invention relates to a method for preparing a polymer / inorganic nano particle composite material, and belongs to the technical field of processing for preparing a polymer / inorganic nano particle composite material. Background technique [0002] The concept of nanocomposites originated in the early 1980s, and it refers to composite materials whose size as a dispersed phase material is at least within 100nm in one dimension. Due to the small particle size and large specific surface area of ​​nanoparticles, as high as 100 square meters per gram, its surface effect, volume effect, quantum size effect and macroscopic quantum tunnel effect, coupled with the polymer's small density, high strength, and durability Corrosion, easy processing and many other excellent properties make polymer-based nanocomposites present many characteristics different from conventional polymer composites. Nanoparticles not only significantly improve the strength, rigidity, and...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29C47/92B29C47/70C08L23/06C08L23/12C08L67/02C08L25/06C08L69/00C08L55/02C08L33/12C08K7/00C08K3/04C08K3/34C08K3/36C08K3/26B29C48/525B29C48/92
CPCB29C47/38B29C47/6012B29C48/875B29C48/92B29C2948/92704B29C48/04B29C48/395B29C2948/92895B29C2948/92904B29C2948/92923B29C2948/92933B29C48/40B29C48/525
Inventor 李姜雷凡郭少云沈佳斌
Owner SICHUAN UNIV
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