Low-density, high-rigidity and high-tenacity polypropylene nano composite material and preparation method thereof

A technology of nanocomposite materials and polypropylene, which is applied in the preparation of composite materials and in the field of polypropylene nanocomposite materials, which can solve the problems of failing to meet product performance indicators and cost requirements, limiting the upper limit of the added amount, and difficulty in dispersing nanofillers. , to achieve the effects of improving molding performance, reducing density and weight, and reducing production costs

Inactive Publication Date: 2010-05-26
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty of dispersion after adding a large amount of nano-fillers, it usually needs to be pre-mixed with resin to make a masterbatch and then blended with the polymer matrix. The process is relatively complicated and the price is relatively expensive, which limits its addition in the polymer matrix. upper limit
Although adding a small amount of nanoparticles alone can also achieve considerable performance improvement, it often fails to meet the end-use performance indicators and cost requirements of the product.

Method used

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  • Low-density, high-rigidity and high-tenacity polypropylene nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weigh polypropylene 96%, Cloisite 20A 2.5%, maleic anhydride grafted polypropylene 1%, Irganox 1010 0.1%, Igrafos 168 0.1%, Negonox DSTP 0.3% by weight and dry mix them in a high-speed mixer 5 minutes, then add into the twin-screw extruder for melt extrusion and granulation. The temperature in the screw barrel is: 180°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, 200°C in the head, and 200°C in the double-screw extruder. The screw extruder speed was 500 rpm. After drying, the particles were injection molded on an injection molding machine to prepare samples.

Embodiment 2

[0044] Weigh polypropylene 92.5%, Cloi site 20A 5%, maleic anhydride grafted polypropylene 2%, Irganox 1010 0.1%, Igrafos 168 0.1%, Negonox DSTP 0.3% by weight percentage, and dry them in a high-speed mixer. Mix for 5 minutes, and then add into the twin-screw extruder for melt extrusion and granulation. The temperature in the screw barrel is: 180°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, and 200°C in the die head. The speed of the twin-screw extruder was 500 rpm. After drying, the particles were injection molded on an injection molding machine to prepare samples.

Embodiment 3

[0046] Weigh polypropylene 85.5%, Cloisite 20A 10%, maleic anhydride grafted polypropylene 4%, Irganox 1010 0.1%, Igrafos 168 0.1%, Negonox DSTP 0.3% by weight and dry mix them in a high-speed mixer 5 minutes, then add into the twin-screw extruder for melt extrusion and granulation. The temperature in the screw barrel is: 180°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, 200°C in the head, and 200°C in the double-screw extruder. The screw extruder speed was 500 rpm. After drying, the particles were injection molded on an injection molding machine to prepare samples.

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Abstract

The invention discloses a low-density, high-rigidity and high-tenacity polypropylene nano composite material and a preparation method thereof. The low-density, high-rigidity and high-tenacity polypropylene nano composite material consists of the following raw materials in percentage by weight: 55 to 98 percent of polypropylene, 1 to 15 percent of organic clay, 0 to 30 percent of inorganic filler, 0.1 to 10 percent of compatilizer, 0 to 20 percent of toughening agent, 0.2 to 2 percent of stabilizing agent, and 0 to 5 percent of other additives. The low-density, high-rigidity and high-tenacity polypropylene nano composite material and the preparation method have the following advantages that: 1, the density and the weight of a product are reduced for the help of reducing the weight and the energy consumption of a finished product; 2, the rigidity and the tenacity are higher; 3, the process flow is simplified and the production cost is reduced effectively; and 4, the influences on the cutting of nano clay and the dispersion process caused by other components are avoided to the utmost extent to further improve the performance of the composite material.

Description

technical field [0001] The invention relates to a polypropylene nano-composite material, in particular to a low-density, high-rigidity, high-toughness polypropylene nano-composite material, and a preparation method of the composite material, belonging to the field of polymer modification and processing. Background technique [0002] Polypropylene is widely used in automotive interior and exterior trims and shells of electronics and home appliances because of its good processing properties and physical and chemical properties. It is currently the fastest-growing general-purpose thermoplastic. However, polypropylene also has shortcomings such as low rigidity, poor heat resistance, and large shrinkage rate. Usually, the rigidity of polypropylene is improved by adding glass fiber or talc powder. However, the addition of glass fiber will affect the molding performance and surface quality of the product, and the increase of talc will also increase the density of polypropylene, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08K13/06C08K9/04C08K3/34B29B9/02B29C47/10B29C47/92B29C48/04B29C48/10B29C48/92
CPCB29C48/397B29C48/92B29C48/04B29C48/10B29C48/9185B29C2948/9259B29C2948/92723B29C2948/92895B29C2948/92904
Inventor 张锴张祥福周文
Owner SHANGHAI PRET COMPOSITES
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