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Polypropylene nanocomposite with ultrahigh flowability as well as high rigidity and shock resistance and preparation method of polypropylene nanocomposite

A nano-composite material and fluidity technology, applied in the field of polypropylene composite materials and polypropylene nano-composite materials, can solve the problems of reduced impact performance and unfavorable use of final products, and achieve excellent processing performance, weight loss strength and impact resistance. ability, the effect of improving impact resistance

Inactive Publication Date: 2018-07-13
CHONGQNG PRET NEW MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method has certain limitations. It is difficult to continue to increase the melt flow rate above 35, otherwise it will easily cause a significant drop in impact performance, which is not conducive to the use of the final product.

Method used

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  • Polypropylene nanocomposite with ultrahigh flowability as well as high rigidity and shock resistance and preparation method of polypropylene nanocomposite
  • Polypropylene nanocomposite with ultrahigh flowability as well as high rigidity and shock resistance and preparation method of polypropylene nanocomposite
  • Polypropylene nanocomposite with ultrahigh flowability as well as high rigidity and shock resistance and preparation method of polypropylene nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 68.5% of high-fluidity polypropylene, 15% of superfine talc, 1% of nano-calcium carbonate, 15% of elastomer toughening agent, 0.1% of Irganox 1010, 0.1% of Igrafos 168, and 0.3% of Negonox DSTP by weight %, dry-mixed in a high-speed mixer for 5 minutes, and then added to a twin-screw extruder to melt and extrude to granulate. The temperature in the screw barrel is: 200°C in the first zone, 210°C in the second zone, 210°C in the third zone, and 210°C in the fourth zone 210°C, head 220°C, twin-screw extruder speed 400 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.

Embodiment 2

[0034] Take by weight 64.5% of high fluidity polypropylene, 17% of superfine talc powder, 3% of nanometer calcium carbonate, 15% of elastomer toughening agent, 0.1% of Irganox 1010, 0.1% of Igrafos 168, and 0.3% of Negonox DSTP %, dry-mixed in a high-speed mixer for 5 minutes, and then added to a twin-screw extruder to melt and extrude to granulate. The temperature in the screw barrel is: 200°C in the first zone, 210°C in the second zone, 210°C in the third zone, and 210°C in the fourth zone 210°C, head 220°C, twin-screw extruder speed 400 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.

Embodiment 3

[0036] Weigh 59.5% of high fluidity polypropylene, 17% of superfine talc powder, 3% of nano calcium carbonate, 20% of elastomer toughening agent, 0.1% of Irganox 1010, 0.1% of Igrafos 168, and 0.3% of Negonox DSTP %, dry-mixed in a high-speed mixer for 5 minutes, and then added to a twin-screw extruder to melt and extrude to granulate. The temperature in the screw barrel is: 200°C in the first zone, 210°C in the second zone, 210°C in the third zone, and 210°C in the fourth zone 210°C, head 220°C, twin-screw extruder speed 400 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 a polypropylene nanocomposite with ultrahigh flowability as well as high rigidity and shock resistance and a preparation method of the polypropylene nanocomposite. The polypropylene nanocomposite with ultrahigh flowability as well as high rigidity and shock resistance is prepared from the following raw materials in percentage by weight: 45-69% of polypropylene, 15-20% of ultrafine inorganic filler, 1-5% of nanofiller, 15-25% of elastomer toughening agent, 0.1-2% of stabilizer and 0-5% of other additives. The polypropylene nanocomposite with ultrahigh flowability as wellas high rigidity and shock resistance has the advantages that 1, the spherical nanofiller generates a synergistic effect with a high-flowability polypropylene resin matrix due to the size effect andshape characteristic, so that the flowability of the polypropylene composite can be greatly improved, excellent processing property is obtained, and the polypropylene nanocomposite is suitable for injection molded parts with extremely thin walls; 2, due to the synergistic effect among the spherical nanofiller, micro-scale flaky inorganic powder and a traditional elastomer toughening agent, the shock resistance of the material can be effectively improved on the premise that the rigidity is kept not reduced; and 3, the polypropylene nanocomposite can be used for large thin-wall injection moldedparts of which the wall thicknesses are smaller than 2.2mm, the weights of the parts are greatly reduced, and meanwhile, the parts can be kept to have enough strength and shock resistance.

Description

technical field [0001] The invention relates to a polypropylene composite material, specifically a polypropylene nanocomposite material with ultra-high fluidity, high rigidity and high impact resistance, and a preparation method thereof; it belongs to the field of polymer modification and processing. Background technique [0002] Since the birth of automobiles, lightweight has been an ongoing research topic. From the earliest development of all-metal materials to the present, the proportion of lightweight plastic products is increasing. Simply replacing steel with plastic has little room for development. . In recent years, plastic parts such as bumpers, instrument panels, door panels and other large interior and exterior parts have gradually become thinner. Among them, the wall thickness of mainstream interior parts has been reduced from 3.0 mm to 2.5 mm. The wall thickness of parts has also been reduced from 3.5 mm to 3.0 mm, and the current trend will gradually develop to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L23/08C08K13/02C08K3/34C08K3/26
Inventor 张锴蔡青刘善华周文
Owner CHONGQNG PRET NEW MATERIAL
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