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Thermoplastic polar polymer/laminated clay nanometer composite material and its preparation method

A technology of nano-composite materials and polar polymers, applied in the field of nano-composite materials, can solve the problems of different and limited protection objects, such as nylon 66/montmorillonite nano-composite materials, to improve performance, improve interface microenvironment, improve The effect of interfacial adhesion

Inactive Publication Date: 2006-02-08
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN1454935A is a patent applied by the inventor. Although it is also prepared by the co-intercalation agent method, the protection object is limited to the preparation method of the nylon 66 / montmorillonite nanocomposite material described in it, which is different from the present invention
In addition, in the patent CN1468914A, multiple reagents are used to process montmorillonite, which is obviously different from this method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation process of the invention is divided into two steps, first preparing the modified layered clay, and then using the modified clay to prepare the thermoplastic polar polymer / layered clay nanocomposite material. Specific steps are as follows.

[0019] Layered clay is intercalated with two different types of modifiers. First, add 20-500 parts of distilled water to 0.50-10 parts of layered clay, stir it evenly to form a stable suspension, and heat it in a water bath to 50-50. 90°C, add 0.1 to 5 parts of intercalation agent (I) for cation exchange reaction, and then add 0.1 to 5 parts of intercalation agent (II) for reaction after the exchange is completed. After the reaction, filter with suction and wash the precipitate with distilled water, or use The modified layered clay is directly precipitated by the centrifugal precipitation method, and the obtained product is heated, dried, ground, and sieved, which is the modified layered clay;

[0020] Then add 0.5-1...

Embodiment 1

[0033] Add 100 g of water to 3 g of montmorillonite with a cation exchange capacity of 100 meq / 100 g, and after uniform dispersion, stir at high speed for 1 hour and age for 1 week to obtain montmorillonite suspension A. Suspension A was heated to 65°C under mechanical stirring. Dissolve 1g of cetyltrimethylammonium bromide in 20g of warm water, slowly add it into the suspension A, stir vigorously, and keep the constant temperature for 1 hour; take 2g of m-cresol and add it dropwise to the reaction system, and continue to keep Reaction temperature and stirring speed, reacted for 2 hours. After the reaction is finished, cool, centrifuge, dry, grind, and pass through a 360-mesh sieve to obtain the modified organic montmorillonite OM-B. Take 4 parts of 100g industrial product-grade nylon 66 particles respectively, add a small amount of white oil, and add organic montmorillonite OM-B at a weight ratio (OM-B: nylon 66) of 1%, 3%, 5%, and 7%. , stir vigorously to mix well. Then t...

Embodiment 2

[0040] Montmorillonite suspension A was obtained by the same method as in Example 1. Suspension A was heated to 65°C under mechanical stirring. Dissolve 1g of cetyltrimethylammonium bromide in 20g of warm water, slowly add to suspension A, stir vigorously, and keep constant temperature for 1 hour; take 2g of nylon 66 salt and add 10ml of 80°C distilled water to make a solution drop by drop Add dropwise into the reaction system, continue to maintain the reaction temperature and stirring speed, and react for 2 hours. After the reaction, cool, centrifuge, dry, grind, and pass through a 360-mesh sieve to obtain the modified organic montmorillonite OM-C. Take 4 parts of 100g industrial grade nylon 66 particles respectively, add a small amount of white oil, and add organic montmorillonite OM-C according to the weight ratio (OM-C: nylon 66) at 1%, 3%, 5%, and 7% , stir vigorously to mix well. Then the mixture enters a twin-screw extruder, extruded and granulated to obtain a nylon ...

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PUM

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Abstract

The invention provides a process for preparing thermoplastic polar polymer / laminated clay nano composite material which comprises, using thermoplastic polar polymer, laminated clay, intercalator, and disperse medium as raw material, reacting the laminated clay with intercalator (I) and intercalator (II), obtaining modified laminated clay, then mixing the modified laminated clay with thermoplastic polar polymer. The prepared nano composite material has good combination property.

Description

Technical field: [0001] The invention belongs to the technical field of nanocomposite materials, and relates to a thermoplastic polar polymer / layered clay nanocomposite material prepared by using the modified layered clay. Background technique: [0002] Since the discovery of exfoliated nylon / clay nanocomposites by Usuki et al. (J. Mater. Res., 1993, 8, 1174), a great deal of work has been done to prepare various polymer / layered clay nanocomposites. This composite material has new and improved properties compared to individual polymer materials. Such improved properties include mechanical properties, thermal properties and barrier properties. See, eg, M.Alexandre and P.Dubois, Mater.Sci.Eng., 2000, 28, 1; and T.J.Pinnavaia and G.W.Beall, Polymer-Clay Nanocomposites, John Wiley & Sons, Ltd. New York, 2000, pp. 195-226. [0003] The preparation methods described in existing patents related to polymer / layered clay nanocomposites almost all use a single intercalation agent to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/08C08L29/04C08L39/06C08K3/34C08J3/12
Inventor 何素芹朱诚身康鑫杜萍李书同陈红
Owner ZHENGZHOU UNIV
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