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Polypropylene (PP) nano composite material and preparation method thereof

A technology of nanocomposite materials and nanomaterials, applied in the field of PP 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

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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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  • Polypropylene (PP) nano composite material and preparation method thereof
  • Polypropylene (PP) nano composite material and preparation method thereof
  • Polypropylene (PP) nano composite material and preparation method thereof

Examples

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Embodiment 1

[0101] In this embodiment, the mass ratio of nanomaterials to polypropylene is 20:100, the liquid medium used is water, the auxiliary agent used is cetylpyridinium chloride, and the nanomaterials used are layered nano-montmorillonite. Nanocomposites were prepared as follows:

[0102] (1) Stir the liquid medium, and at the same time add nanomaterials at a speed of 5.6g / min for continuous stirring to disperse evenly, and the weight ratio of liquid medium to nanomaterials is 20:1;

[0103] (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 which is 32mm, the additives and nanomaterials The weight ratio is 10:1;

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

[0105] (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 nanocomposit...

Embodiment 2

[0109] 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 Toic anhydride, the weight ratio is 1:1, the nanomaterial that adopts is kaolin, prepares nanocomposite material according to the following method:

[0110] (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;

[0111] (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 15mm, and the weight ratio of described auxiliary agent and nanometer material is 50:1;

[0112] (3) the paste obtained in step (2) is mixed with polypropylene to obtain a premix;

[0113] (4) feeding the premixed material in ...

Embodiment 3

[0117] In this example, 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-montmorillonite and kaolin, and the mass ratio is 8 : 2, prepare nanocomposite material according to the following method:

[0118] (1) Stir the liquid medium, and at the same time add nanomaterials at a speed of 0.01g / min for continuous stirring to disperse evenly, and the weight ratio of liquid medium to nanomaterials is 50:1;

[0119] (2) Add auxiliary agent to the continuous stirring solution of step (1) at a speed of 15g / min to obtain a paste, the consistency of the paste is 26mm, and the weight ratio of the auxiliary agent to nanomaterial is 0.1 :1;

[0120] (3) the paste obtained in step (2) is mixed with polypropylene to obtain a premix;

[0121] (4) feeding the premixed material in step (3) into an internal mixer, melt blending and performing subsequent processing to obtain ...

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Abstract

The invention relates to the field of nano composite materials, in particular to a polypropylene nano composite material and a preparation method thereof. The nano composite material is prepared by melt blending of a premix, wherein the premix is formed by filling and adhering polypropylene particles with a nano material which is combined with a liquid medium. When the nano composite material hasstrength and / or rigidity in a certain range, toughness is increased along with increase of strength and / or rigidity. The preparation method comprises the following steps: mixing a liquid medium and anano material to obtain a paste, and adhering the paste to the surfaces of the polypropylene particles for melt blending to obtain the nano composite material. The nano composite material provided bythe invention is excellent in toughness, short in technological process and low in cost, and is suitable for popularization and application.

Description

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

Claims

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Application Information

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IPC IPC(8): C08L23/12C08J3/20C08J5/00C08K3/34C08K3/22C08K3/24C08K3/04
CPCC08J3/2053C08J5/005C08J2323/12C08J2405/04C08J2405/08C08J2433/02C08J2435/00C08K3/22C08K3/24C08K3/34C08K2003/2224C08K2201/011C08K2201/014C08K3/042
Inventor 马永梅庄亚芳郑鲲张京楠曹新宇尚欣欣
Owner INST OF CHEM CHINESE ACAD OF SCI
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