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PP nano composite material and preparation method thereof

A nano-composite material and nano-material technology, applied in the field of PP nano-composite material and its preparation, can solve the problems of product performance impact, polyamide failure to enter the interlayer in time, 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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  • PP nano composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] In this embodiment, the mass ratio of nanomaterials to polypropylene is 12:100, the liquid medium used is water, the auxiliary agent used is cetylpyridinium chloride, and the nanomaterials used are nano-alumina, according to the following method Preparation of nanocomposites:

[0086] (1) The liquid medium is stirred, and the nanomaterial is added at a speed of 4.5g / min to continuously stir and disperse evenly, and the weight ratio of the liquid medium to the nanomaterial is 20:1;

[0087] (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;

[0088] (3) the paste obtained in step (2) is mixed with polypropylene to obtain a premix;

[0089] (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 nanocompos...

Embodiment 2

[0093] In this embodiment, the mass ratio of nanomaterials to polypropylene is 10:100, the liquid medium used is acetone and water, and the mass ratio of acetone to water is 7:93, and the auxiliary agents used are polyacrylic acid and polymarine To anhydride, the weight ratio is 1:1, the nanometer material that adopts is nanometer silicon, prepares nanocomposite material according to the following method:

[0094] (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;

[0095] (2) Add auxiliary agent to the continuous stirring solution of step (1) with the speed of 0.5g / min, obtain paste, the consistency of described paste is 25mm, and the weight ratio of described auxiliary agent and nanometer material is 50:1;

[0096] (3) the paste obtained in step (2) is mixed with polypropylene to obtain a premix;

[0097] (4) The premix of step (3) i...

Embodiment 3

[0101] In this embodiment, the mass ratio of nanomaterials to polypropylene is 0.1:100, the liquid medium used is water, the auxiliary agent used is sodium alginate, the nanomaterials used are nano-zirconia and nano-silicon carbide, and the mass ratio is 8:2, prepare nanocomposites according to the following method:

[0102] (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;

[0103] (2) Add auxiliary agent to the continuous stirring solution of step (1) at a speed of 10g / 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;

[0104] (3) the paste obtained in step (2) is mixed with polypropylene to obtain a premix;

[0105] (4) with the premix internal mixer of step (3), melt blending and carry out follow-up processing, obtain nanocomposite material. ...

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Abstract

The invention relates to the field of nano composite materials, and in particular to a PP 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 polypropylene particles to form the premix; and toughness of the nano composite material increases with increase of strength and / or stiffness in a certain strength and / or stiffness range. 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 polypropylene 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 nanocomposites, in particular to a PP nanocomposite 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 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] Patent No. CN101081928A, proposed a ki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/04C08K3/22C08L33/02C08L35/00C08L5/04C08L79/02C08L5/00C08K3/36C08K3/34C08K3/04
CPCC08K3/22C08K9/04C08K2003/2227C08K2003/2244C08K2201/011C08L23/12C08L2205/03C08L33/02C08L35/00C08K9/08C08K3/36C08L5/04C08K3/34C08L79/02C08K3/041C08L5/00C08K5/526
Inventor 马永梅郑鲲张京楠曹新宇叶钢尚欣欣
Owner INST OF CHEM CHINESE ACAD OF SCI
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