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Polyethylene polynite nanometer composite material and preparation method

A nanocomposite material and composite material technology are applied in the field of polyethylene montmorillonite nanocomposite materials and their preparation, which can solve the problem that polyethylene macromolecular chains are difficult to enter, and it is difficult to obtain well dispersed polyethylene montmorillonite nanocomposite materials, etc. problems, to achieve the effect of increased crystallization temperature, improved thermal stability, simple and easy operation

Inactive Publication Date: 2005-01-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, due to the difference between the properties of polyethylene and montmorillonite, when montmorillonite is directly melted and compounded with polyethylene, it is difficult for polyethylene macromolecular chains to enter the montmorillonite layer, and it is difficult to obtain well-dispersed polyethylene montmorillonite. Soil Nanocomposites

Method used

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Embodiment Construction

[0018] In concrete implementation, the raw material component and content of polyethylene montmorillonite nanocomposite material are by weight:

[0019] Polyethylene: 100,

[0020] Inorganic montmorillonite: 0.5-50,

[0021] Cationic modifier: 0.1-50,

[0022] Dispersion medium: 50-2000,

[0023] Small molecule monomer: 0.5-50,

[0024] Initiator: 0.1-10.

[0025] Wherein, the cation exchange capacity of the inorganic montmorillonite is 50-150meq / 100g.

[0026] The polyethylene is high-density polyethylene, or medium-density polyethylene, or low-density polyethylene, or a blend thereof.

[0027] The cationic modifier is cetyltrimethylammonium chloride or is, or is cetyltrimethylammonium bromide, or is octadecyltrimethylammonium chloride, or is octadecyl Dimethylbenzyl ammonium chloride, or its complexes.

[0028] The dispersion medium is water.

[0029] The small molecular monomer is acrylic acid, or α-methacrylic acid, or acrylate, or glycidyl methacrylate, or styrene...

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Abstract

The invention discloses a polyethylene polynite nanometer composite material and preparation method which consists of, using positive ion modifier to conduct organic treatment to inorganic montmorillonite, thus obtaining organic montmorillonite, then carrying out grafted modification to the polyvinylidene macrochains, thus obtaining polyvinylidene grafts with good hydrophilicity, finally melting the obtained substances in the previous steps.

Description

Technical field: [0001] The invention relates to a polyethylene montmorillonite nanocomposite material prepared by a melting method and a preparation method thereof Background technique: [0002] Since Japanese researchers successfully prepared nylon 6 clay nanocomposites for the first time in 1987, polymer clay nanocomposites have invested a lot of energy and funds in research due to their excellent properties. A series of polymer clay nanocomposites have been successfully prepared, including nylon 6, nylon 66, polyurethane, etc., and some of them have been industrialized. Since polyolefins have no polar groups in the main chain, they have poor compatibility with montmorillonite. Direct melt blending makes it difficult for montmorillonite to be well dispersed in the substrate to obtain polyethylene montmorillonite. nanocomposites. Researchers have tried to prepare polyolefin-montmorillonite nanocomposites by in-situ method. They first loaded the catalyst between the shee...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08L23/06
Inventor 徐卫兵翟红波周正发郭汉洋
Owner HEFEI UNIV OF TECH
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