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Hyperbranched polyamide modified polypropylene composite material and preparation method thereof

A technology of hyperbranched polyamide and composite materials, which is applied in the field of hyperbranched polyamide modified polypropylene composite materials and its preparation, can solve problems such as the application and reports of hyperbranched polymers that have not been seen, and achieve easy control of glass fiber content, The effect of good impact toughness and low raw material cost advantages

Inactive Publication Date: 2017-08-01
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But so far, there are no applications and reports of hyperbranched polymers in continuous glass fiber reinforced polypropylene.

Method used

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  • Hyperbranched polyamide modified polypropylene composite material and preparation method thereof
  • Hyperbranched polyamide modified polypropylene composite material and preparation method thereof
  • Hyperbranched polyamide modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]65 parts of homopolypropylene (melt index 12g / 10min, test condition 230°C / 2.16Kg), 0.6 parts of alkyl-terminated hyperbranched polyamide, 0.5 parts of silane coupling agent KH550 (γ-aminopropyltriethoxy Silane), 0.02 part of antioxidant 1010, 0.04 part of antioxidant 168, 0.5 part of ethylene bisstearamide, 0.5 part of maleic anhydride grafted polypropylene, are added to the high mixer successively, and the mixing temperature is controlled at 40 ℃, mix the mixture for 3 minutes and set aside.

[0039] Preparation of polypropylene composite material: using continuous fiber-reinforced thermoplastic material impregnation equipment, adopting melt impregnation pultrusion process, adding the above mixture into the hopper of a twin-screw extruder for heating and melting, wherein the screw diameter of the twin-screw extruder is 20mm, The length-to-diameter ratio of the screw is 40:1, and the mixing and melting temperature is set as: the first section 170°C, the second section 18...

Embodiment 2

[0041] 60 parts of copolymerized polypropylene (melt index 15g / 10min, test condition 230°C / 2.16Kg), 0.5 parts of terminal alkyl hyperbranched polyamide, 1.5 parts of silane coupling agent KH550 (γ-aminopropyltriethoxysilane ), 0.01 part of antioxidant 1076, 0.01 part of antioxidant 1098, 0.03 part of antioxidant 168, 0.02 part of antioxidant 618, 0.3 part of calcium stearate, 0.3 part of polyethylene wax, 1.5 part of maleic anhydride graft Polypropylene is sequentially added into the high mixer, the mixing temperature is controlled at 40°C, and the mixture is set aside after 3 minutes.

[0042] Preparation of polypropylene composite material: using continuous fiber-reinforced thermoplastic material impregnation equipment, adopting melt impregnation pultrusion process, adding the above mixture into the hopper of a twin-screw extruder for heating and melting, wherein the screw diameter of the twin-screw extruder is 35mm, The length-to-diameter ratio of the screw is 40:1, and the...

Embodiment 3

[0044] 25 parts of homopolypropylene (melt index 5g / 10min, test condition 230°C / 2.16Kg), 30 parts of copolymerized polypropylene (melt index 8g / 10min, test condition 230°C / 2.16Kg), 0.4 part of terminal alkyl overbranch Polyamide, 2.5 parts of γ-2,3 glycidoxy-propyltrimethoxysilane, 0.01 part of antioxidant 1010, 0.01 part of antioxidant 1098, 0.01 part of antioxidant 1076, 0.03 part of antioxidant 168 , 0.03 part of antioxidant 618, 0.3 part of ethylene bisstearamide, 0.2 part of calcium stearate, 0.2 part of pentaerythritol stearate, and 2.5 parts of maleic anhydride grafted polypropylene are added to the high mixer in sequence, The temperature of the mixture is controlled at 60° C., and it is set aside after 4 minutes of mixing.

[0045] Preparation of polypropylene composite material: using continuous fiber-reinforced thermoplastic material impregnation equipment, adopting melt impregnation pultrusion process, adding the above mixture into the hopper of a twin-screw extrude...

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Abstract

The invention provides a hyperbranched polyamide modified polypropylene composite material and a preparation method thereof. The hyperbranched polyamide modified polypropylene composite material is prepared from 40 to 65 parts of polypropylene, 0.2 to 0.6 part of hyperbranched polyamide, 30 to 50 parts of continuous glass fiber, 0.5 to 5 parts of coupling agent, 0.02 to 0.05 part of primary antioxidant, 0.04 to 0.1 part of auxiliary antioxidant, 0.5 to 1 part of lubricant and 0.5 to 5 parts of compatilizer. The raw materials are mixed, molten, dipped, pulled and extruded to be prepared into the hyperbranched polyamide modified polypropylene composite material. According to the hyperbranched polyamide modified polypropylene composite material disclosed by the invention, alkyl terminated hyperbranched polyamide is utilized as a flow accelerant to be mixed and modified with the low melt index polypropylene to reduce system viscosity, and a melting, pulling and extruding technology is utilized to prepare the continuous glass fiber reinforced polypropylene composite material; thus, material cost is obviously reduced, mechanical property of the material is remarkably improved, and the problems of high raw material cost, difficult processing and shaping and poor product odor in existing continuous glass fiber reinforced polypropylene production are solved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a hyperbranched polyamide-modified polypropylene composite material and a preparation method thereof. Background technique [0002] As a general-purpose engineering plastic, continuous fiber-reinforced polypropylene material has high strength, high stiffness, high impact strength, low density, low warpage creep, and excellent dynamic fatigue resistance. It is widely used in automobiles and home appliances. Structural components such as electric tools and external appearance components such as electric tool casings. At present, it is not only used in automotive exterior structural parts, such as engine cover, front-end bracket, etc., but also widely used in automotive interior parts, such as inner fenders, instrument panels, and airbags because of its excellent mechanical properties and high cost performance. Components such as shells can also replace materials such as me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L77/02C08L51/06C08K13/04C08K7/14C08K5/134C08K5/526
CPCC08L23/14C08L23/12C08L2201/08C08L2205/03C08L2205/035C08L77/02C08L51/06C08K13/04C08K7/14C08K5/1345C08K5/526
Inventor 杨桂生蒋超杰姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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