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Nylon66/phyllosilicate nano composite material and preparation method thereof

A nano-composite material, layered silicate technology, applied in the field of materials, can solve the problems of increased layer spacing of layered brick silicate, poor product performance, influence, etc.

Inactive Publication Date: 2008-06-18
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The shortcomings of the methods described in the above patents are that the clay or layered silicate used in the method generally adopts a cation exchange method to introduce small organic molecules such as quaternary ammonium salts with carbon chains into the sheets to make the layer Increased spacing between brick silicate layers for separation from later processing
[0011] Professor Yu Zhongzhen made a useful exploration in this area. He mixed montmorillonite with water to make a slurry, then added it to an extruder with nylon and extruded it, and used water vapor to open the montmorillonite sheet, and obtained Good effect, but it is unavoidable that the presence of water in the processing process will inevitably degrade the nylon 6 matrix, which will have a negative impact on the final product performance

Method used

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  • Nylon66/phyllosilicate nano composite material and preparation method thereof
  • Nylon66/phyllosilicate nano composite material and preparation method thereof
  • Nylon66/phyllosilicate nano composite material and preparation method thereof

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preparation example Construction

[0057] The preparation method of the present invention is described as follows:

[0058] Preparation

[0059] The preparation method of the present invention comprises the following steps:

[0060] (a) providing an aqueous dispersion of layered silicate raw soil, wherein the weight ratio of layered silicate raw soil to water is 2 to 200;

[0061] (b) providing a mixture of the aqueous dispersion (containing 0.1 to 10 parts by weight of layered silicate raw soil) and 99.9 to 90 parts by weight of nylon 66 salt in step (a), the mixture undergoes polycondensation reaction to obtain the nano composite material.

[0062] In a preferred embodiment of the present invention, the object of the present invention can be achieved through the following technical solutions:

[0063] Dispersion of phyllosilicate: First, disperse a certain amount of phyllosilicate in 2-200 times the aqueous solution, stir in a water bath at 80°C for 2 hours, add a certain amount of nylon 66 salt to dispers...

Embodiment 1

[0087] Put 10 g of nano-based montmorillonite in 1000 g of distilled water, stir in a water bath at 80° C. for 2 hours, and let stand for 10 minutes to remove impurities precipitated at the bottom. Then add 1000 g of hexamethylenediamine adipate to dissolve in it, disperse evenly, and then ultrasonically disperse for 2 hours. Part of the water is removed in a rotary evaporator so that the water content is 20-40% of the total weight of the mixture; the temperature of the water bath is controlled below 90°C. Put it into the reaction kettle and raise the temperature to 270-280°C, keep the pressure at 0.8MPa, and react for 3 hours. React under normal pressure for 1 hour, and finally keep the vacuum for 1 hour, and discharge. The properties of the prepared montmorillonite / nylon 66 nanocomposite material 1# are shown in attached table 2.

Embodiment 2

[0089] Same as in Example 1, except that the nano-based montmorillonite is changed to rectorite, and the properties of the prepared rectorite / nylon 66 nanocomposite material 2# are shown in attached table 2.

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Abstract

The present invention provides a nylon 66 / layer-shaped silicate nanometer composite. The raw materials of the nanometer composite comprise 0.1 to 10 weight portions of layer-shaped silicate raw bentonite and 99.9 to 90 weight portions of nylon 66 salts. The present invention also provides a preparation method of the nanometer composite. The nylon 66 / layer-shaped silicate nanometer composite material of the present invention does not contain organic small molecule, and the preparation method of the present invention does not require any organized disposal to ensure that the layer-shaped silicate is peeled off well and dispersed uniformly.

Description

technical field [0001] The invention relates to the field of materials, in particular to a nylon 66 / layered silicate nanocomposite material and a preparation method thereof. Background technique [0002] A nanocomposite material refers to a composite material in which the size of the dispersed phase material is less than 100 nm in at least one dimension. Due to the surface effect, volume effect, quantum size effect and macroscopic quantum effect of nanoparticles, the stiffness, strength, toughness and other properties of the polymer matrix will be significantly improved. Due to the high strength and hardness of the montmorillonite sheet in the montmorillonite / nylon nanocomposite compared to other materials, the nanocomposite has the characteristics of high strength, high modulus and high barrier properties, so in recent years It has been extensively researched and applied in the past ten years. [0003] In Japanese Patent No. JP-A-51-109998, Unitika Corporation of Japan de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K3/34C08G69/00
Inventor 解廷秀
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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