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A kind of 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 application range, reduce defects, and reduce apparent viscosity Effect

Active Publication Date: 2016-10-26
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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  • A kind of method for preparing polymer/inorganic nano particle composite material
  • A kind of method for preparing polymer/inorganic nano particle composite material
  • A kind of 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 nano composite material includes the following components and their weight parts:

[0057] Component Parts by weight Isotactic polypropylene (PP, which is a crystalline polymer matrix)97 Montmorillonite (MMT, layered silicate nano-filler)3

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

[0059] The first step is to prepare materials according to the above components;

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

[0061] In the third step, the isotactic polypropylene and dry montmorillonite obtained in the second step are put together in a high-mixer for 6 minutes, and the rotation speed is 150 rpm to obtain the isotactic polypropylene / montmorillonite premix Thing

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

Embodiment 2

[0067] A raw material of polypropylene / inorganic nano composite material includes the following components and their weight parts:

[0068] Component Parts by weight Isotactic polypropylene (PP, which is a crystalline polymer matrix)90 Montmorillonite (MMT, layered silicate nano-filler)5 Polypropylene grafted with maleic anhydride (PP-MA, as compatibilizer)5

[0069] The first step is to prepare materials according to the above components;

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

[0071] In the third step, the isotactic polypropylene, dry montmorillonite and compatibilizer obtained in the second step are put together in a high-mixer for pre-mixing for 5 minutes at a speed of 100 revolutions per minute to obtain isotactic polypropylene and montmorillonite. Premix of soil release and compatibilizer, n...

Embodiment 3

[0077] A raw material of polypropylene / inorganic nano composite material includes the following components and their weight parts:

[0078] Component Parts by weight Isotactic polypropylene (PP, which is a crystalline polymer matrix)99.5 Graphene (R-GO, nano-filler)0.5

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

[0080] The first step is to prepare materials according to the above components;

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

[0082] In the third step, the isotactic polypropylene and dry graphene obtained in the second step are placed in a high-mixer for pre-mixing for 5 minutes at a speed of 100 revolutions per minute to obtain an isotactic polypropylene / graphene premix;

[0083] Then, put the obtained premix into a twin-screw extruder to melt blend, extrude, and pellet to obtain isotactic polypropylene / graphene premixed composite particles, and place the composite particles in a blast...

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Abstract

The invention discloses a method for preparing a polymer / inorganic nanoparticle composite material, which is characterized in that after the polymer and the inorganic nanoparticle are mixed and granulated according to a certain ratio, the granules are integrated by biaxially stretching melt mixing and forming The extruder in the device is conveyed, plasticized and melted, and under the biaxially stretched-shear force of the biaxially stretched melt mixer, the polymer / inorganic nanoparticles with good dispersion of inorganic nanoparticles and excellent performance are obtained Pellets or sheets of composite materials. The invention not only overcomes the disadvantages of difficulty in dispersing and poor compatibility of inorganic nanoparticles in polymer melts, but also obtains nanocomposite materials with better mechanical properties, barrier properties, thermal stability and electrical conductivity. This method is simple and easy, the equipment is simple, and it is convenient for large-scale production.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B29B9/06B29C47/92B29C47/70C08L23/06C08L23/12C08L67/02C08L25/06C08L69/00C08L55/02C08L33/12C08K7/00C08K3/04C08K3/34C08K3/36C08K3/26B29C48/525B29C48/92
CPCB29C48/875B29C48/92B29C2948/92704B29C48/04B29C48/395B29C2948/92895B29C2948/92904B29C2948/92923B29C2948/92933B29C48/40B29C48/525
Inventor 李姜雷凡郭少云沈佳斌
Owner SICHUAN UNIV