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Modified polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of modified polypropylene composite material and its preparation, can solve the problem of insufficient improvement, and achieve the effect of improving rigidity and reducing density

Inactive Publication Date: 2012-06-27
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two modified polypropylene materials are respectively filled and modified with nano-calcium carbonate and hollow glass microspheres. Although the stiffness is improved and the density is reduced to a certain extent, the improvement is not obvious enough.

Method used

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  • Modified polypropylene composite material and preparation method thereof
  • Modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 5wt% talcum powder, 2wt% nano-calcium carbonate, and 1.5wt% maleic anhydride into a high-speed mixer and stir for 5 minutes, then add 78.2wt% homopolypropylene, 1wt% color masterbatch, 2wt% styrene- Butadiene copolymer and 0.3wt% antioxidant are added to the mixer and stirred for 10 min, and the above-mentioned mixed material is added to the main feeding barrel of the twin-screw extruder, and the special side feeding port of the twin-screw extruder Add 10wt% hollow glass microspheres, extrude and granulate, then dry, cool, and pelletize.

[0024] The processing temperature of the above twin-screw extruder is set as follows: Zone 1 170°C, Zone 2 180°C, Zone 3 185°C, Zone 4 190°C, Zone 5 195°C, Zone 6 200°C, Zone 7 200°C, Zone 8 190°C, 185°C in nine zone, 180rpm main engine speed.

Embodiment 2

[0026] Add 5wt% talcum powder, 3wt% nano-calcium carbonate, and 1.5wt% maleic anhydride into a high-speed mixer and stir for 5 minutes, then add 79.2wt% polypropylene, 1wt% color masterbatch, 2wt% styrene-butadiene Add the copolymer and 0.3wt% antioxidant into the mixer and stir for 10 minutes, add the above-mentioned mixed material into the main feeding barrel of the twin-screw extruder, and add 8wt at the special side feeding port of the twin-screw extruder % hollow glass microspheres, extruded and granulated, dried, cooled, and pelletized.

[0027] The processing temperature of the above twin-screw extruder is set as follows: Zone 1 170°C, Zone 2 180°C, Zone 3 185°C, Zone 4 190°C, Zone 5 195°C, Zone 6 200°C, Zone 7 200°C, Zone 8 190°C, 185°C in nine zone, 180rpm main engine speed.

Embodiment 3

[0032] Add 5wt% talcum powder, 2wt% nano-calcium carbonate, and 1.5wt% silane coupling agent into a high-speed mixer and stir for 5 minutes, then add 70.2wt% polypropylene, 10wt% ethylene-propylene-butadiene terpolymer , 1wt% color masterbatch, 0.3wt% antioxidant were added to the mixer and stirred for 10 min, the above-mentioned mixed material was added to the main feeding barrel of the twin-screw extruder, and fed on the special side of the twin-screw extruder Add 10wt% hollow glass microspheres at the feed port, extrude and granulate, then dry, cool, and pelletize.

[0033] The processing temperature of the above twin-screw extruder is set as follows: Zone 1 170°C, Zone 2 180°C, Zone 3 185°C, Zone 4 190°C, Zone 5 195°C, Zone 6 200°C, Zone 7 200°C, Zone 8 190°C, 185°C in the ninth zone, and the speed of the main engine is 160rpm.

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Abstract

The invention aims at providing a high-stiffness and low-density modified polypropylene composite material and a preparation method thereof. The modified polypropylene composite material disclosed by the invention is formed by mixing 40-90% by weight of polypropylene, 0-30% by weight of toughener, 1-20% by weight of hollow glass microspheres, 1-10% by weight of nano-calcium carbonate, 1-15% by weight of talc powder, 0.3-0.5% by weight of antioxidant, 1% by weight of masterbatch and 0.5-3% by weight of compatilizer. According to the modified polypropylene composite material disclosed by the invention, the nano-calcium carbonate and hollow glass are mixed and filled into the polypropylene material so as to improve the stiffness of the polypropylene composite material and simultaneously reduce the density of the modified polypropylene composite material. The modified polypropylene composite material is suitable for being applied to manufacturing automobile instrument boards, door panels, bumpers, upright post guard plates and other parts and has an important role in substituting plastic for steel as an automobile material, saving energy, reducing emission and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified polypropylene composite material and a preparation method thereof. Background technique [0002] Modified polypropylene material is a material with a wide range of uses. The currently used filler material is mainly talc powder. Recently, improvements have appeared, such as the patent "a nano calcium carbonate polypropylene composite material (patent number: CN101210087A)" As disclosed, the composite material contains 100 parts of polypropylene resin, 1 to 15 parts of nano-calcium carbonate, 1 to 20 parts of elastomer, and 0.1 to 1 part of stabilizer; another example is the patent "a polypropylene composite material and its preparation method (Patent No.: CN101775173A)” discloses that the formula of its polypropylene composite material is composed of the following components in weight percent: 40-70% of polypropylene, 5-30% of toughening agent, and...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08K13/04C08K7/28C08K3/26C08K3/34B29C47/92B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 方舟李进
Owner CHERY AUTOMOBILE CO LTD
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