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High-toughness long-glass-fiber reinforced polypropylene composite material and method for preparing same

A technology of long glass fiber and composite material, which is applied in the field of high toughness long glass fiber reinforced polypropylene composite material and its preparation, and achieves the effects of superior comprehensive performance and good impact resistance.

Inactive Publication Date: 2013-04-17
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The notched impact strength of the long glass fiber reinforced polypropylene material made by this method is lower than 35KJ / m 2

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of high tenacity long glass fiber reinforced polypropylene composite material comprises the following steps:

[0042] (1) Plasticize and melt 46kg of polypropylene, 3kg of maleic anhydride grafted polypropylene, 0.4kg of polypropylene wax, 10100.2kg of oxygen agent, and 1680.4kg of antioxidant at 180-220°C to obtain a polypropylene resin melt ; The continuous glass fiber is impregnated through the melt of the polypropylene resin, so that the glass fiber is completely soaked; the above-mentioned glass fiber is drawn out from the creel, and the tension is adjusted by the tension roller, and then enters the melt impregnation die, and the fiber is realized in the die. Dispersion and infiltration, through the outlet of the fiber of the die head, the content of the fiber is controlled to be 50kg, cooled and solidified, cut into 10mm length by a pelletizer, to obtain long glass fiber reinforced polypropylene composite material A;

[0043] (2) Add 79.7kg ...

Embodiment 2

[0047] The preparation method of high tenacity long glass fiber reinforced polypropylene composite material comprises the following steps:

[0048] (1) 57.4kg of polypropylene, 2kg of maleic anhydride grafted polypropylene, 10100.2kg of antioxidant, and 1680.4kg of antioxidant are plasticized and melted at 180-220°C to obtain a polypropylene resin melt; the continuous The glass fiber is impregnated by the melt of the polypropylene resin, so that the glass fiber is completely infiltrated; the above-mentioned glass fiber is drawn out from the creel, the tension is adjusted by the tension roller, and then enters the melt impregnation die, and the dispersion and infiltration of the fiber are realized in the die , the content of controlling fiber by the outlet of the fiber of die head is 40kg, cooling solidifies, cuts into 12mm length through pelletizer, obtains long glass fiber reinforced polypropylene composite material C;

[0049] (2) Add 69.7kg of polypropylene resin, 30kg of E...

Embodiment 3

[0053] The preparation method of high tenacity long glass fiber reinforced polypropylene composite material comprises the following steps:

[0054] (1) Plasticize and melt 46.4kg of polypropylene, 3kg of maleic anhydride grafted polypropylene, 10100.2kg of antioxidant, and 1680.4kg of antioxidant at 180-220°C to obtain a polypropylene resin melt; The glass fiber is impregnated by the melt of the polypropylene resin, so that the glass fiber is completely infiltrated; the above-mentioned glass fiber is drawn out from the creel, the tension is adjusted by the tension roller, and then enters the melt impregnation die, and the dispersion and infiltration of the fiber are realized in the die , through the outlet of the fiber of the die head, the content of the controlled fiber is 50kg, cooled and solidified, cut into 11mm length through a pelletizer, and obtained long glass fiber reinforced polypropylene composite material E;

[0055] (2) 59.7kg of polypropylene resin, 40kg of polyo...

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Abstract

The invention relates to a high-toughness long-glass-fiber reinforced polypropylene composite material and a method for preparing the same. The composite material is prepared from the following components in percentage by weight: 60-80% of long-glass-fiber reinforced polypropylene composite material and 20-40% of toughening masterbatch. The long-glass-fiber reinforced polypropylene composite material is prepared from the following components in parts by weight: 45-60 parts of polypropylene, 40-50 parts of glass fiber, 2-3 parts of compatibilizer, 0-0.5 part of lubricant and 0.5-1 part of antioxidant. The toughening masterbatch is prepared from the following components in parts by weight: 60-80 parts of polypropylene, 20-40 parts of toughener and 0.2-0.5 part of antioxidant. Compared with the prior art, the high-toughness long-glass-fiber reinforced polypropylene composite material has good impact resistance, strength and rigidity, excellent overall performance and notch impact strength of 52KJ / m<2>.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-toughness long glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Long Glass Fiber Reinforced Thermoplastic is a reinforced thermoplastic with glass fibers the same length as the pellets. In the case of the same fiber content, compared with ordinary short fiber reinforced thermoplastics, long fiber reinforced thermoplastics have higher strength, modulus, fatigue resistance, heat resistance and better dimensional stability. [0003] However, although the strength and rigidity of long glass fiber reinforced thermoplastics are good, the impact strength often cannot meet the actual needs. For example, Chinese patent CN101338051A discloses a long glass fiber reinforced polypropylene material and its preparation method, which is to mix polypropylene, flow modifier, compatibilizer, antioxi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/04C08K7/14C08J3/22B29B9/06
Inventor 肖玲玲孙利明
Owner HEFEI GENIUS NEW MATERIALS
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