Polypropylene composite material and preparation method thereof

A composite material, polypropylene pellet technology, applied in the field of polymer materials, can solve the problems of reducing the oxidation resistance and hydrolysis resistance of the material, destroying the interface between the fiber and the polypropylene resin, reducing the mechanical properties of the material, etc., to achieve long-term water resistance. effect of hydrolysis properties, excellent mechanical properties, good mechanical properties and hydrolysis resistance

Inactive Publication Date: 2016-12-14
ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as known to those skilled in the art, antioxidants, especially small molecule antioxidants, will continue to precipitate in a water environment, thereby reducing the oxidation resistance and hydrolysis resistance o

Method used

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  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof

Examples

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preparation example Construction

[0064] Specifically, the preparation method of the polypropylene composite material of the present invention comprises the following steps:

[0065] (1) According to the weight portion of the present invention, after mixing polypropylene, compatibilizer, antioxidant and lubricant through a high mixer, they are added to the extruder for melt mixing, and the temperature range of the extruder is 180 ~250℃;

[0066] (2) impregnating the continuous fiber with the molten polypropylene mixture in the dipping tank, and then drawing, cooling and pelletizing to obtain the long-fiber-reinforced polypropylene masterbatch;

[0067] (3) According to the parts by weight of the present invention, after mixing polypropylene, antioxidant and fluoropolymer through a high-speed mixer, they are added to an extruder for melting and mixing, and then cooled and pelletized to obtain the modified Non-toxic polypropylene pellets;

[0068] (4) According to the parts by weight of the present invention, ...

Embodiment 1

[0077] 47 parts by weight of polypropylene, 2 parts by weight of maleic anhydride grafted polypropylene compatibilizer, 0.5 part by weight of hindered phenolic antioxidant 1010 (purchased from Rianlon (Rianlon) company), 0.3 part by weight of phosphite antioxidant Oxygen 168 (purchased from Rianlon (Rianlon) company) and 0.2 parts by weight of calcium stearate lubricant were mixed for 15 minutes through a high mixer, and then added to a twin-screw extruder for melting and mixing, and the temperature range of the extruder was 180~230℃.

[0078] The molten polypropylene mixture was impregnated with 50 parts by weight of continuous non-alkali glass fibers in an impregnation tank. After drawing, cooling and pelletizing, long fiber reinforced polypropylene masterbatches are obtained. In this masterbatch, the glass fiber content is 50%, and the length is 10mm.

[0079] 93.5 parts by weight of polypropylene, 0.25 parts by weight of hindered phenolic antioxidant 1010, 0.25 parts by ...

Embodiment 2

[0082] 95.5 parts by weight of polypropylene, 0.25 parts by weight of hindered phenolic antioxidant 1010, 0.25 parts by weight of phosphite antioxidant 168 and 2 parts by weight of polyvinylidene fluoride were mixed for 15 minutes by a high mixer, and then added to the twin-screw Melting and mixing in the extruder, the temperature range of the extruder is 180-230°C. Modified polypropylene pellets are obtained after cooling and pelletizing.

[0083] The long-fiber reinforced polypropylene masterbatch obtained in Example 1 and the modified polypropylene pellets obtained in Example 2 were added to a high mixer in a ratio of 30:70 and mixed for 5 minutes to obtain the polypropylene composite Material. In this composite, the glass fiber content is 15% and the polyvinylidene fluoride content is 1.4%.

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Abstract

The invention belongs to the field of high molecular materials, and relates to a polypropylene composite material and a preparation method thereof. The polypropylene composite material provided by the invention comprises 10 to 90 weight parts of long fiber reinforced polypropylene master batches and 90 to 10 weight parts of modified polypropylene granules, wherein the modified polypropylene granules contain fluorine-containing polymers. The invention also provides a preparation method of the polypropylene composite material. In the polypropylene composite material, the fluorine-containing polymers are added into the modified polypropylene granules, so that the interface bonding between the fiber and the polypropylene in the long fiber reinforced polypropylene master batches cannot be influenced; the mechanical property of the long fiber reinforced polypropylene composite material injection molded product is not influenced. In addition, the fluorine-containing polymers achieve the effect of reducing the surface energy of the long fiber reinforced polypropylene composite material, so that the water permeability is retarded; the hydrolysis resistance performance is improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene has excellent mechanical properties, good heat resistance, chemical stability, insulation and outstanding cost performance. As a general-purpose plastic, it is widely used in automobiles, home appliances, construction and other fields. After using fiber reinforcement, the mechanical properties of polypropylene materials are significantly improved. Among them, long fiber reinforced polypropylene composite materials (LFT-PP) are famous for their excellent mechanical properties, excellent cost performance and scalable molding process. Rapid development. [0003] When LFT-PP is used in parts in contact with water, such as propellers, car kettles, washing machine liners, water dispenser inner walls, etc., in order to ensure the long-term stable use of these parts, the hydrol...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L27/18C08L27/16C08L51/06C08K13/06C08K9/04C08K7/14C08K5/134C08K5/526C08K5/098C08J3/22
Inventor 丁伊可龚颖卢康利
Owner ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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