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PA6 nanocomposite and production method thereof

A technology of nanocomposite materials and nanomaterials, applied in the field of PA6 nanocomposite materials and its preparation, can solve the problems of polyamide failing to enter the interlayer in time, product performance impact, etc.

Active Publication Date: 2019-09-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method is simple and the production cost is low, but this method is to add montmorillonite mud after polyamide melting, which will cause the montmorillonite mud to be completely mixed with the copolymer in the future, and the water between the layers will be gasified due to high temperature. As a result, the polyamide failed to enter the interlayer in time. At the same time, the energy generated only by water vaporization was not enough to completely peel off the montmorillonite layer, so a completely peeled composite material could not be obtained, and its product performance was greatly affected. influences

Method used

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  • PA6 nanocomposite and production method thereof
  • PA6 nanocomposite and production method thereof
  • PA6 nanocomposite and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0102] In this embodiment, the mass ratio of nanomaterial to polyamide 6 is 5:100, the liquid medium used is water, the auxiliary agent used is cetylpyridine chloride, and the nanomaterial used is layered nanometer montmorillonite , the anti-aging agent used is N,N,-di-sec-butyl-p-phenylenediamine, and the nanocomposite material is prepared according to the following method:

[0103] (1) Stir the liquid medium, and at the same time add nanomaterials at a speed of 4g / min for continuous stirring and uniform dispersion, and the weight ratio of the liquid medium to the nanomaterials is 20:1;

[0104] (2) adding an auxiliary agent to the continuous stirring solution of step (1) in batches or at a time at a speed of 0.1 g / min to obtain a paste, the consistency of the paste is 29mm, the auxiliary agent and the nanomaterials The weight ratio is 10:1;

[0105] (3) the paste obtained in step (2) is mixed with polyamide 6 to obtain a premix;

[0106] (4) feeding the premix in step (3) ...

Embodiment 2

[0110] In this embodiment, the mass ratio of nanomaterials to polyamide 6 is 10:100, the liquid medium used is acetone and water, the mass ratio of acetone to water is 7:93, and the auxiliary agents used are polyacrylic acid and polyacrylic acid. Maleic anhydride, the weight ratio is 1:1, the nanomaterial used is kaolin, the antiaging agent used is antioxidant 1035, and the nanocomposite material is prepared according to the following method:

[0111] (1) The liquid is stirred, and the nanomaterial is added at a speed of 10g / min for continuous stirring and uniform dispersion, and the weight ratio of the liquid medium to the nanomaterial is 100:1;

[0112] (2) adding an auxiliary agent to the continuous stirring solution of step (1) at a speed of 0.5 g / min to obtain a paste, the consistency of the paste is 47mm, and the weight ratio of the auxiliary agent and the nanomaterial is 50:1;

[0113] (3) the paste obtained in step (2) is mixed with polyamide 6 to obtain a premix;

...

Embodiment 3

[0118] In the present embodiment, the mass ratio of nanomaterial and polyamide 6 is 0.1:100, the liquid medium adopted is water, the auxiliary agent adopted is gelatin, the nanomaterial adopted is nano montmorillonite and kaolin, and the mass ratio is 8: 2. Prepare the nanocomposite material according to the following method:

[0119] (1) The liquid medium is stirred, and the nanomaterial is added at a speed of 0.05g / min for continuous stirring and uniform dispersion, and the weight ratio of the liquid medium to the nanomaterial is 50:1;

[0120] (2) Add an auxiliary agent to the continuous stirring solution of step (1) at a speed of 12 g / min to obtain a paste, the consistency of the paste is 38mm, and the weight ratio of the auxiliary agent to the nanomaterial is 0.1 :1;

[0121] (3) the paste obtained in step (2) is mixed with polyamide 6 to obtain a premix;

[0122] (4) feeding the premix in step (3) from a pressureless feeding zone to a screw extruder, melt blending and ...

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Abstract

The invention relates to the field of nanocomposite, in particular to PA6 nanocomposite and a production method thereof. The nanocomposite is produced by conducting melt blending on premix, wherein the premix is formed by filling polyamide 6 particles with a nanometer material in combination with a liquid medium and adhering the nanometer material in combination with the liquid medium to the polyamide 6 particles. The production method comprises the steps of mixing the liquid medium and the nanometer material to obtain paste, and adhering the paste to the surfaces of the polyamide 6 particlesfor melt blending to obtain the nanocomposite. The provided nanocomposite has excellent tenacity, and is short in technology process, low in cost and suitable for use and popularization.

Description

technical field [0001] The invention relates to the field of nanocomposite materials, in particular to a PA6 nanocomposite material and a preparation method thereof. Background technique [0002] In the existing technology, nanomaterials and polymers are often mixed and extruded to form composite materials. Although the tensile strength of such composite materials has been improved, due to problems such as poor compatibility between nanomaterials and polymers, such materials The impact resistance is generally not high. [0003] In order to solve the above problems, methods such as intercalation in-situ polymerization are often used to make the polymer react between the layers of the nanomaterial to improve the impact resistance of the composite material, but the process is time-consuming, the polymerization reaction conditions are harsh, and the solvent is not easy. Recycling will bring environmental pollution and other derivative problems. [0004] Patent No. CN101081928A...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08J3/20C08J5/00C08K3/34C08K3/22C08K3/24C08K3/04C08K5/3432C08K3/02
CPCC08J3/2053C08J5/005C08J2377/02C08J2433/02C08J2435/00C08J2489/00C08K3/24C08K3/34C08K5/3432C08K2003/023C08K2003/2224C08K2201/011C08K2201/014C08K3/042
Inventor 马永梅庄亚芳向前郑鲲张京楠曹新宇尚欣欣
Owner INST OF CHEM CHINESE ACAD OF SCI
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