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Expandable microsphere filling modified polypropylene composite material and preparation method thereof

A technology for expanding microspheres and composite materials, which is used in the preparation of composite materials, polypropylene composite materials, and low-density polypropylene composite materials. Improved performance, low density effect

Inactive Publication Date: 2014-04-09
ZHEJIANG PRET NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its stable foaming characteristics and low commercial cost, it has been widely used in various fields, such as printing inks, coatings, sealants, shoe soles, curing agents for paper products, etc., but its application in general-purpose thermoplastics is less Not widely used yet

Method used

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  • Expandable microsphere filling modified polypropylene composite material and preparation method thereof
  • Expandable microsphere filling modified polypropylene composite material and preparation method thereof
  • Expandable microsphere filling modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 95.5% of polypropylene, 3% of F-230D, 1% of maleic anhydride grafted polypropylene, 0.1% of Irganox1010, 0.1% of Igrafos168, and 0.3% of Negonox DSTP by weight, and dry mix them in a high-speed mixer After 5 minutes, add it to the twin-screw extruder to melt and extrude to granulate. The temperature in the screw barrel is: 180°C in the first zone, 185°C in the second zone, 185°C in the third zone, 190°C in the fourth zone, 180°C in the machine head, double The screw extruder rotating speed is 500 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.

Embodiment 2

[0038] Weigh 85.5% of polypropylene by weight, 3% of F-230D, 10% of talc, 1% of maleic anhydride grafted polypropylene, 0.1% of Irganox1010, 0.1% of Igrafos168, and 0.3% of Negonox DSTP. Dry mix in the mixer for 5 minutes, then add to the twin-screw extruder to melt and extrude to granulate. The head temperature is 180°C, and the rotational speed of the twin-screw extruder is 500 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.

Embodiment 3

[0040]Weigh 75.5% of polypropylene by weight, 3% of F-230D, 20% of talc, 1% of maleic anhydride grafted polypropylene, 0.1% of Irganox1010, 0.1% of Igrafos168, and 0.3% of Negonox DSTP. Dry mix in the mixer for 5 minutes, then add to the twin-screw extruder to melt and extrude to granulate. 180°C, the rotational speed of the twin-screw extruder is 500 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.

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Abstract

The invention discloses an expandable microsphere filling modified polypropylene composite material and a preparation method thereof. The composite material is composed of the following raw materials in percentage by weight: 60-98% of polypropylene, 1-10% of expandable microsphere, 0-25% of inorganic filler, 0.1-2% of compatilizer, 0-5% of toughener, 0.2-2% of stabilizer and 0-3% of other additives. The expandable microsphere used as the auxiliary additive for processing polypropylene can lower the density of the composite material without excessively influencing other properties, so that the composite material conforms to the requirements for trends to light weight of the existing automobile parts, and has very low density and favorable comprehensive mechanical properties; and by adopting the sectional feeding mode, the expandable microsphere and other components can be added into the extruder at the downstream of the screw bolt, thereby maximally avoiding the influence on the shearing and dispersion process of the foamed microsphere, and further enhancing the properties of the composite material.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a low-density polypropylene composite material filled and modified by expandable microspheres, and a preparation method of the composite material, belonging to the field of polymer modification and processing. Background technique [0002] The lightweight of automobiles is the development direction of automobile materials. For every 10% reduction in the weight of automobiles, fuel consumption can be reduced by 6% to 8%. At the same time, lightweight automobiles can improve fuel efficiency and reduce CO 2 Greenhouse gas emissions, improve vehicle driving, steering, acceleration, braking, etc., and facilitate noise and vibration optimization. [0003] Polypropylene has good processing performance, physical and chemical properties, extremely low density, and relatively low price, and is widely used in household appliances, automobiles and other industries. It is currently the fa...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/00C08L51/06C08L23/08C08K13/02C08K3/34C08K5/134C08K5/526C08J9/32B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08J9/0061C08J9/32C08J2323/12C08J2353/00C08J2423/08C08J2451/06C08K2201/003C08L23/12C08L2203/14C08L2205/03C08L53/00C08L51/06C08L23/0815C08K13/02C08K3/34B29C48/04B29C48/40B29C48/875B29C2948/926B29C2948/92885B29C2948/92895
Inventor 陈勇张鹰张祥福周文
Owner ZHEJIANG PRET NEW MATERIALS
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