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A kind of pa6 nanocomposite material and preparation method thereof

A nano-composite material and nano-material technology, applied in the field of PA6 nano-composite materials and its preparation, can solve the problems of polyamide not entering the interlayer in time and affecting product performance, and achieve the goals of suitable promotion, short time consumption and improved impact performance Effect

Active Publication Date: 2021-09-07
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of pa6 nanocomposite material and preparation method thereof
  • A kind of pa6 nanocomposite material and preparation method thereof
  • A kind of pa6 nanocomposite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0102] In this embodiment, the mass ratio of nanomaterials to polyamide 6 is 5:100, the liquid medium used is water, the auxiliary agent used is cetylpyridinium chloride, and the nanomaterials used are layered nano-montmorillonite , the anti-aging agent adopted 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 to disperse evenly, and the weight ratio of liquid medium to nanomaterials is 20:1;

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

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

[0106] (4) feeding the premixed material in step (3) into a screw extruder from a...

Embodiment 2

[0110] In this example, 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 polyamide 6. Maleic anhydride, weight ratio is 1:1, and the nanometer material that adopts is kaolin, and the antiaging agent that adopts is antioxidant 1035, prepares nanocomposite material according to the following method:

[0111] (1) Stir the liquid, and at the same time add nanomaterials at a speed of 10g / min for continuous stirring to disperse evenly, and the weight ratio of the liquid medium to the nanomaterials is 100:1;

[0112] (2) add auxiliary agent in the continuous stirring solution of step (1) with the speed of 0.5g / min, obtain paste, the consistency of described paste is 47mm, and the weight ratio of described auxiliary agent and nanometer material is 50:1;

[0113] (3) mixing the paste obtained in step (2) with polyamide 6 to obtain a p...

Embodiment 3

[0118] In this embodiment, the mass ratio of nanomaterials to polyamide 6 is 0.1:100, the liquid medium used is water, the auxiliary agent used is gelatin, the nanomaterials used are nano-montmorillonite and kaolin, and the mass ratio is 8: 2. Prepare nanocomposites as follows:

[0119] (1) Stir the liquid medium, and at the same time add nanomaterials at a speed of 0.05g / min for continuous stirring to disperse evenly, and the weight ratio of the liquid medium to the nanomaterials is 50:1;

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

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

[0122] (4) feeding the premixed material in step (3) into a screw extruder from a pressureless feeding zone, melt blending and performing subsequent processing to obtain a n...

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Abstract

The present invention relates to the field of nano-composite materials, in particular to a PA6 nano-composite material and a preparation method thereof. Nanomaterials with a liquid medium are filled and adhered between polyamide 6 particles. The preparation method comprises mixing a liquid medium and a nanometer material to obtain a paste, adhering the paste to the surface of polyamide 6 particles and performing melt blending to obtain a nanocomposite material. The nanocomposite material provided by the invention has excellent toughness, short process flow and low cost, and is suitable for popularization and use.

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, this type of material The impact resistance performance 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 nanomaterials to improve the impact resistance of the composite material. However, this process takes a long time, the polymerization reaction conditions are harsh, and the solvent is not easy. Recycling will bring derivative problems such as environmental pollution. [0004] Pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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