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PA66 nano composite material and preparation method thereof

A nano-composite material and nano-material technology, applied in the field of PA66 nano-composite material and its preparation, can solve the problems of polyamide failing to enter the interlayer in time and the impact of product performance.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In this embodiment, the mass ratio of nanomaterials to polyamide 66 is 12:100, the liquid medium used is water, the auxiliary agent used is sodium lauryl sulfate, and the nanomaterials used are nanometer yttrium oxide, according to the following method Preparation of nanocomposites:

[0088] (1) Stir the liquid medium, and at the same time add nanomaterials at a speed of 8g / min for continuous stirring. The dispersion is uniform, and the weight ratio of liquid medium to nanomaterials is 24:1;

[0089] (2) Add additives in batches or once to the continuously stirring solution of step (1) at a speed of 0.1g / min to obtain a paste, the consistency of which is 46mm, and the additives and nanomaterials The weight ratio is 20:1;

[0090] (3) the paste obtained in step (2) is mixed with polyamide 66 to obtain a premix;

[0091] (4) The premix of step (3) is fed into the screw extruder from the pressureless feed zone, melt blended and carried out subsequent processing to obtain...

Embodiment 2

[0095] In this example, the mass ratio of nanomaterials to polyamide 66 is 10:100, the liquid medium used is acetonitrile and water, the mass ratio of acetonitrile to water is 6:4, and the auxiliary agents used are polyacrylic acid and polyamide 66. Amide epichlorohydrin resin, weight ratio is 1:1, the nano material that adopts is nano-praseodymium oxide, prepares nano-composite material according to the following method:

[0096] (1) The liquid is stirred, and the nanomaterial is added at a speed of 10g / min to continuously stir and disperse evenly, and the weight ratio of the liquid medium to the nanomaterial is 100:1;

[0097] (2) Add additives to the continuous stirring solution of step (1) at a speed of 0.5g / min to obtain a paste, the consistency of the paste is 35mm, and the weight ratio of the additives to nanomaterials is 50:1;

[0098] (3) the paste obtained in step (2) is mixed with polyamide 66 to obtain a premix;

[0099] (4) The premix of step (3) is fed into the...

Embodiment 3

[0103] In this embodiment, the mass ratio of nanomaterials to polyamide 66 is 0.1:100, the liquid medium used is water, the auxiliary agent used is squash gum, and the nanomaterials used are nano cerium oxide and nano erbium oxide, the mass ratio For 7:3, prepare the nanocomposite material according to the following method:

[0104] (1) The liquid medium is stirred, and the nanomaterial is added at a speed of 0.01g / min to continuously stir and disperse evenly, and the weight ratio of the liquid medium to the nanomaterial is 50:1;

[0105] (2) Add an auxiliary agent to the continuously stirring solution of step (1) at a speed of 10g / min to obtain a paste, the consistency of the paste is 29mm, and the weight ratio of the auxiliary agent to the nanomaterial is 0.1 :1;

[0106] (3) the paste obtained in step (2) is mixed with polyamide 66 to obtain a premix;

[0107] (4) The premix of step (3) is fed into the screw extruder from the pressureless feed zone, melt blended and carri...

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Abstract

The invention relates to the field of nano composite materials, and in particular to a PA66 nano composite material and a preparation method thereof. The nano composite material is obtained by melt blending of a premix, and a nano material combined with a liquid medium is filled and adhered between PA66 particles to form the premix. The preparation method comprises: mixing the liquid medium and the nano material to obtain a paste, and adhering the paste to the surface of the PA66 particles for melt blending to obtain the nano composite material. The provided nano composite material has excellent toughness, short technological process and low cost, and is suitable for popularization and use.

Description

technical field [0001] The present invention relates to the field of nano-composite materials, in particular to a PA66 nano-composite 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 in the gaps of nanomaterials to improve the impact resistance of the composite material, but 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] Pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L33/02C08L77/00C08L5/00C08L79/02C08L89/00C08L71/02C08L5/04C08L77/04C08K3/22C08K5/41C08K7/06C08K3/30
CPCC08K3/22C08K5/41C08K2003/221C08K2003/2213C08K2201/011C08L77/06C08L2205/03C08L33/02C08L77/00C08L5/00C08L79/02C08K7/06C08L89/00C08L71/02C08L5/04C08K3/30C08L77/04
Inventor 马永梅张京楠曹新宇郑鲲尚欣欣叶钢路兴婷
Owner INST OF CHEM CHINESE ACAD OF SCI
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