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PA66 (polyamide 66) nano composite material and preparation method thereof

A technology of nanocomposite materials and nanomaterials, applied in the field of PA66 nanocomposite materials and its preparation, can solve the problems of polyamide failing to enter the interlayer in time and product performance impact

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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  • PA66 (polyamide 66) nano composite material and preparation method thereof
  • PA66 (polyamide 66) nano composite material and preparation method thereof
  • PA66 (polyamide 66) nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] In this example, the mass ratio of nanomaterials to polyamide 66 is 7:100, the liquid medium used is water, the auxiliary agent used is agar, the nanomaterials used are layered nano-montmorillonite, and the anti-aging The agent is anti-aging agent 4010, 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 5.5g / min for continuous stirring and disperse evenly, the weight ratio of liquid medium to nanomaterials is 22:1;

[0104] (2) Add additives to the continuous stirring solution of step (1) in batches or at a time at a speed of 0.1g / min to obtain a paste, the consistency of which is 34mm, the additives and nanomaterials The weight ratio is 10:1;

[0105] (3) the paste obtained in step (2) is mixed with polyamide 66 to obtain a premix;

[0106] (4) feeding the premixed material in step (3) into a screw extruder from a pressureless feeding zone, melt blendi...

Embodiment 2

[0110] In this embodiment, the mass ratio of nanomaterials to polyamide 66 is 10:100, the liquid medium used is butyl acetate and water, the mass ratio of butyl acetate to water is 8:92, and the auxiliary agent used is Polyacrylic acid and gellan gum, the weight ratio is 1:1, the nanometer material that adopts is kaolin, the antiaging agent that adopts is antiaging agent AW, prepare 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 43mm, and the weight ratio of described auxiliary agent and nanometer material is 50:1;

[0113] (3) the paste obtained in step (2) is mixed with polyamide 66 to obtain a premix...

Embodiment 3

[0118] 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 gum arabic, the nanomaterials used are nano-montmorillonite and sepiolite, the mass ratio For 6:4, prepare the nanocomposite material according to the following method:

[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 additives to the continuous stirring solution of step (1) at a speed of 12g / min to obtain a paste, the consistency of the paste is 75mm, and the weight ratio of the additives to nanomaterials is 0.1 :1;

[0121] (3) the paste obtained in step (2) is mixed with polyamide 66 to obtain a premix;

[0122] (4) feeding the premixed material in step (3) into an internal mixer, melt blending and performing subsequent processing to obtain a nan...

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Abstract

The invention relates to the field of nano composite materials and in particular to a PA66 (polyamide 66) nano composite material and a preparation method thereof. The nano composite material is prepared from a premix through melting blending, and the premix is prepared from a nano material which is combined with a liquid medium and is adhered to polyamide 66 granules and fills space among the polyamide 66 granules. The preparation method comprises the following method: mixing the liquid medium with the nano material so as to obtain an ointment, enabling the ointment to adhere to surfaces of the polyamide 66 granules, and carrying out melting blending, so as to obtain the nano composite material. The nano composite material provided by the invention has excellent toughness, and in additionis short in process procedure, low in cost and applicable to popularization and application.

Description

technical field [0001] The invention relates to the field of nanocomposite materials, in particular to a PA66 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] Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L5/12C08L5/00C08L33/02C08L39/08C08L71/02C08K7/00
CPCC08K2201/011C08K2201/014C08L77/06C08L2205/03C08L5/12C08K7/00C08L33/02C08L5/00C08L39/08C08L71/02
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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