Low-floating-fiber glass fiber reinforced polypropylene material and preparation method thereof

A technology of polypropylene material and glass fiber, which is applied in the field of glass fiber reinforced polypropylene material and its preparation, can solve the problems that glass fiber cannot be filled, and glass fiber exposure is poorly improved, so as to improve the apparent performance and mechanical performance, and achieve excellent performance , high-strength effect

Active Publication Date: 2016-08-10
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent document CN 102993560A discloses a glass fiber reinforced polypropylene material for blow molding, but its glass fiber exposure improvement is poor, and the glass fiber cannot be filled with too high a content
But there is no report about a kind of glass fiber reinforced polypropylene material with low floating fiber on the surface and its preparation method

Method used

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  • Low-floating-fiber glass fiber reinforced polypropylene material and preparation method thereof
  • Low-floating-fiber glass fiber reinforced polypropylene material and preparation method thereof
  • Low-floating-fiber glass fiber reinforced polypropylene material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] Described a kind of low float glass fiber reinforced polypropylene material, it comprises following composition:

[0040]

[0041] The polypropylene is selected from Yangzi Petrochemical S700 (isotactic polypropylene).

[0042] The glass fiber is an alkali-free glass fiber with a diameter of 8 μm.

[0043] The high melt strength polypropylene is a polypropylene resin having 0.05 long-chain branches per 1000 carbon atoms and a polydispersity coefficient of 4;

[0044] The compatibilizer is cyclic anhydride grafted polypropylene (PP-g-MAH);

[0045] The ethylene-propylene block copolymer is an ethylene-propylene block copolymer elastomer with an ethylene segment content of 15%;

[0046] The other additives described are flow modifier PE wax.

[0047] The preparation method of the low-floating glass fiber reinforced polypropylene material comprises the following specific steps: producing by melt extrusion and blending process, and the screw rod is divided into 10 hea...

Embodiment 2

[0051] Described a kind of low float glass fiber reinforced polypropylene material, it comprises following composition:

[0052]

[0053] Described polypropylene is selected from Korea SK BX3800 (syndiotactic polypropylene);

[0054] The glass fiber is an alkali-free glass fiber with a diameter of 20 μm;

[0055] The high melt strength polypropylene is a polypropylene resin having 0.15 long-chain branches per 1000 carbon atoms and a polydispersity coefficient of 10;

[0056] The compatibilizer is cyclic anhydride grafted polypropylene (PP-g-MAH);

[0057]The ethylene-propylene block copolymer is an ethylene-propylene block copolymer elastomer with an ethylene segment content of 20%;

[0058] The other additives described are flow modifier PE wax.

[0059] The preparation method of the low-floating glass fiber reinforced polypropylene material comprises the following specific steps: producing by melt extrusion and blending process, and the screw rod is divided into 10 hea...

Embodiment 3

[0063] Described a kind of low float glass fiber reinforced polypropylene material, it comprises following composition:

[0064]

[0065] The polypropylene is selected from the 1:1 mixture of SK BX3800 (syndiotactic polypropylene) and Yangzi Petrochemical S700 (isotactic polypropylene) in South Korea;

[0066] The glass fiber is an alkali-free glass fiber with a diameter of 12 μm;

[0067] The high melt strength polypropylene is a polypropylene resin having 0.1 long-chain branches per 1000 carbon atoms and a polydispersity coefficient of 8;

[0068] The compatibilizer is cyclic anhydride grafted polypropylene (PP-g-MAH);

[0069] The ethylene-propylene block copolymer is an ethylene-propylene block copolymer elastomer with an ethylene segment content of 18%;

[0070] The other additives described are flow modifier PE wax;

[0071] The preparation method of the low-floating glass fiber reinforced polypropylene material comprises the following specific steps: producing by ...

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Abstract

The invention relates to a low-floating-fiber glass fiber reinforced polypropylene material and a preparation method thereof. The low-floating-fiber glass fiber reinforced polypropylene material is prepared from, by weight, 100 parts of polypropylene resin, 15-30 parts of high-melt-strength polypropylene, 10-50 parts of glass fiber, 1-3 parts of a compatilizer, 5-15 parts of an ethylene-propylene segmented copolymer and 1-2 parts of other auxiliaries. According to the preparation method of the low-floating-fiber glass fiber reinforced polypropylene material, screw extrusion processing is adopted, and the screw combination design principle is adopted, wherein the first region and the second region are only composed of conveying components, the third, fourth, fifth, sixth and seventh regions comprise shearing components, the eighth, ninth and tenth regions are composed of conveying components, and the extrusion temperature is 165-230 DEG C. According to the low-floating-fiber glass fiber reinforced polypropylene material, the mechanical property is excellent, and the surface of the obtained low-floating-fiber glass fiber reinforced polypropylene material is smooth, clean and free of floating fiber.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a glass fiber reinforced polypropylene material with low floating fibers on the surface and a preparation method thereof. Background technique [0002] Polypropylene resin is currently the most widely used commercial polymer material, and is widely used in automobile, electrical and other industries. In order to improve the mechanical properties of polypropylene products, polypropylene resin is widely used at present because it can significantly improve its rigidity and strength after being filled with inorganic substances such as talc, glass fiber, calcium carbonate, etc., and can significantly reduce its cost. Compared with other mineral reinforcements, glass fiber reinforced polypropylene has the greatest improvement in mechanical properties. The production process of glass fiber reinforced polypropylene is mainly divided into twin-screw extrusion, pelletizing by pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08L51/06C08K7/14B29B9/06B29C47/84B29C47/92B29C48/92
CPCB29B9/06B29C48/82B29C48/845B29C48/92B29C2948/92704C08K2201/003C08L23/12C08L2205/025C08L2205/035C08L2207/10C08L2207/12C08L53/00C08L51/06C08K7/14
Inventor 路海冰娄小安陈超陈光伟李莉朱明源赵海涛
Owner 上海日之升科技有限公司
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