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Polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of plastics, can solve the problems of uneven dispersion of inorganic nano-fillers, and achieve the effect of being suitable for industrial production, preventing agglomeration, and simple operation

Inactive Publication Date: 2011-10-12
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a polypropylene composite material to solve the technical problem of uneven dispersion of inorganic nanofillers in the prior art

Method used

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  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof

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preparation example Construction

[0024] see figure 1 , figure 1 Show the flow chart of the preparation method of polypropylene composite material in the embodiment of the present invention, including the following steps:

[0025] Step S01, mixing 0.5-1% by mass of inorganic nano-filler, and 1-2% by mass of silane coupling agent and titanate coupling agent compound, at a temperature of 70-120 Stirring at ℃ for 0.5-1 hour;

[0026] Step S02, adding 90-96% by mass of polypropylene, 1-2% by mass of dispersant and 1-2% by mass of antioxidant, at a temperature of 50-90°C Stirring under conditions for 0.5-1 hour to obtain a polypropylene composite material precursor;

[0027] Step S03, extruding the polypropylene composite material precursor to obtain a polypropylene composite material.

[0028] Specifically, the polypropylene, inorganic nanofiller, silane coupling agent and titanate coupling agent compound, dispersant and antioxidant are the same as those described above, and will not be repeated here.

[0029...

Embodiment 1

[0036] The nanometer calcium carbonate that is 0.5% by mass percent composition, the coupling agent (30% silane coupling agent and 70% titanate coupling agent) that mass percent composition is placed on high-speed stirrer and mix at temperature Stirring at 90°C for 5 minutes;

[0037] Add PP (melt flow rate 18g / 10min) with a mass percentage of 90%, a dispersant with a mass percentage of 1.5%, and an antioxidant with a mass percentage of 2%, at a temperature of 50°C Stir for 3 minutes to obtain a polypropylene composite material precursor;

[0038] Add the polypropylene composite material precursor to the hopper of the twin-screw extruder, the temperature in the first zone: 120-130°C; the temperature in the second zone: 130-140°C; the temperature in the third zone: 140-150°C; the temperature in the fourth zone : 140~170℃; temperature in zone five: 140~170℃; temperature in zone six: 140~170℃; temperature in zone seven: 140~170℃; temperature in zone eight: 150~160℃; temperature ...

Embodiment 2

[0040] The nano silicon dioxide that mass percent composition is 0.7%, the coupling agent (50% silane coupling agent and 50% titanate coupling agent) that mass percent composition is 1.3% are placed in high-speed stirrer and mix, in Stirring for 8 minutes at a temperature of 100°C;

[0041]Add PP (melt flow rate 18g / 10min) with a mass percentage of 96%, a dispersant with a mass percentage of 1.5%, and an antioxidant with a mass percentage of 2%, at a temperature of 80°C Stir for 4 minutes to obtain a polypropylene composite material precursor;

[0042] Add the polypropylene composite material precursor to the hopper of the twin-screw extruder, the temperature in the first zone: 120-130°C; the temperature in the second zone: 130-140°C; the temperature in the third zone: 140-150°C; the temperature in the fourth zone : 140~170℃; temperature in zone five: 140~170℃; temperature in zone six: 140~170℃; temperature in zone seven: 140~170℃; temperature in zone eight: 150~160℃; tempera...

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Abstract

The invention is applicable to the technical field of plastics, and provides a polypropylene composite material and a preparation method thereof. The polypropylene composite material comprises the following components in percentage by mass: 90-96% of polypropylene, 0.5-1% of inorganic filler, 1-2% of a complex of a silane coupling agent and a titanate coupling agent, 1-2% of dispersing agent and 1-2% of antioxidant. The polypropylene composite material provided by the invention uses the silane coupling agent and the titanate coupling agent together, thus uniformly dispersing the inorganic nano filler in the polypropylene composite material, effectively preventing the inorganic nano filler from glomeration and realizing the balance between the toughness and rigidity of the polypropylene composite material. The preparation method of the polypropylene composite material provided by the invention is simple to operate, has the advantages of low cost and high production benefit, and is especially suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of plastics, in particular to a polypropylene composite material and a preparation method thereof. Background technique [0002] Nanoplastic is a new type of material, which is an organic / inorganic nanocomposite material formed by dispersing inorganic fillers in a plastic matrix at a nanometer size. It utilizes the compounding and stabilizing effect of macromolecules to compound nanoparticles into plastics, and the compound has long-term stability. The combination of nanoparticles and plastic matrix can not only control the size and stability of the particles, but also after the organic compounding of nanomaterials and plastic matrix, new effects will be produced due to the interaction between nanomaterials and the matrix, realizing the complementary advantages of the two. [0003] There are two preparation techniques of nanoplastics, mechanical blending method and intercalation composite method. Mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/06C08K9/04B29C47/92B29C48/92
CPCB29C48/92B29C48/875B29C2948/92514B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 徐东徐永马旭辉
Owner SHENZHEN KEJU NEW MATERIAL
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