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Low-density high-noise-reducing polypropylene nano-composite material and preparation method thereof

A technology of nanocomposite materials and polypropylene, which is applied in the field of polymer material modification and processing, can solve the problems of limited noise reduction effect, achieve excellent sound absorption and noise reduction performance, reduce dosage, and the method is simple and feasible

Inactive Publication Date: 2019-06-11
CHONGQNG PRET NEW MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the density of the above materials is low, the noise reduction effect is limited, which can no longer meet people's increasing living needs

Method used

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  • Low-density high-noise-reducing polypropylene nano-composite material and preparation method thereof
  • Low-density high-noise-reducing polypropylene nano-composite material and preparation method thereof
  • Low-density high-noise-reducing polypropylene nano-composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 94% of polypropylene, 1% of dispersant, 0.1% of 1010, 0.2% of DSTP, 0.2% of 168 and 1.5% of black masterbatch by weight, and dry mix them in a high-speed mixer for 8 minutes from the main feeding port Added into twin-screw extruder, and weighed 3% of the nano-filler in the second half of the extruder through side feeding, melted, extruded, cooled and granulated to obtain polypropylene nanocomposites, wherein the screw speed was 300 rev / min, the barrel temperature is 190-230°C.

Embodiment 2

[0027] Weigh 93% of polypropylene, 2% of dispersant, 0.1% of 1010, 0.2% of DSTP, 0.2% of 168 and 1.5% of black masterbatch by weight, and dry mix it in a high-speed mixer for 8 minutes from the main feeding port Added into twin-screw extruder, and weighed 3% of the nano-filler in the second half of the extruder through side feeding, melted, extruded, cooled and granulated to obtain polypropylene nanocomposites, wherein the screw speed was 300 rev / min, the barrel temperature is 190-230°C.

Embodiment 3

[0029] Weigh 90% of polypropylene, 2% of dispersant, 0.1% of 1010, 0.2% of DSTP, 0.2% of 168 and 1.5% of black masterbatch by weight, and dry mix it in a high-speed mixer for 8 minutes from the main feeding port Added into twin-screw extruder, and weighed 6% of the nano-filler in the second half of the extruder by side feeding, melted, extruded, cooled and granulated to obtain a polypropylene nanocomposite material, wherein the screw speed was 300 rev / min, the barrel temperature is 190-230°C.

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Abstract

A low-density high-noise-reducing polypropylene nano-composite material and a preparation method thereof are disclosed. The low-density high-noise-reducing polypropylene nano-composite material comprises the following raw materials in percentage by weight: 86-94% of polypropylene, 3-9% of nano-filler, 1-3% of dispersant, 0.1-1% of antioxidant and 0.1-2% of other additives, wherein the nano-filleris a mixture of organic modified montmorillonite and carbon nanotubes, and the weight ratio of the nano-filler to the carbon nanotubes is 2:1. The preparation method comprises the follow steps: weighing raw materials according to a weight ratio, uniformly mixing polypropylene, the dispersant, the antioxidant and other additives in a high-speed mixer, adding the mixture into a twin-screw extruder,adding nano-fillers in the second half of the extruder through side feeding, and granulating by melting extrusion and cooling. As that organic modified montmorillonite and the carbon nanotube are added, the polypropylene composite material has excellent noise reduction performance and low density at the same time, and can be widely applied in the field of automobile interior and exterior ornamentsand the like, thereby meeting the application requirements of automobile lightweight.

Description

technical field [0001] The invention belongs to the field of polymer material modification and processing, and in particular relates to a low-density, high-noise reduction polypropylene nanocomposite material and a preparation method thereof. Background technique [0002] Polypropylene is widely used in the fields of automotive interior and exterior trims, electronic home appliances and other fields due to its abundant raw material sources, low price, and good comprehensive performance. However, polypropylene has the characteristics of low rigidity, and the noise reduction performance of the material is poor, so it is difficult to meet the sound absorption and noise reduction performance requirements in the actual use process. [0003] Generally speaking, adding inorganic fillers such as talcum powder and barium sulfate to polypropylene materials can improve the sound absorption and noise reduction performance of the material. Chinese patent CN102816378A discloses a barium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L51/06C08K13/06C08K3/04C08K5/134C08K5/372C08K5/526C08K7/00
Inventor 陈通华张锴蔡青周文
Owner CHONGQNG PRET NEW MATERIAL
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