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Graphene and continuous carbon fiber synergistically-reinforced polyamide composite material and preparation method thereof

A composite material, graphene technology, applied in the field of polymer materials, can solve the problems of limited improvement of nylon material performance, low impact strength, small fiber length, etc., to achieve the effect of improving surface quality, improving processability, and reducing viscosity

Inactive Publication Date: 2017-12-22
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention uses the Brüggemann copper salt antioxidant to improve the hydrolysis resistance of the material to a certain extent, but the twin-screw extruder is used for direct blending and modification, and the fiber length is very small due to the shearing effect of the screw. The performance improvement of nylon material is limited, especially the impact strength is relatively low

Method used

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  • Graphene and continuous carbon fiber synergistically-reinforced polyamide composite material and preparation method thereof
  • Graphene and continuous carbon fiber synergistically-reinforced polyamide composite material and preparation method thereof
  • Graphene and continuous carbon fiber synergistically-reinforced polyamide composite material and preparation method thereof

Examples

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Embodiment 1

[0050] (1) A kind of graphene, continuous carbon fiber synergistically reinforced polyamide composite material, this material slicing length 6-25mm, particle diameter 3.5mm, it comprises the component of following weight ratio: PA6:140 parts, PA66:760 parts , Continuous carbon fiber: 100 parts, graphene: 5 parts, antioxidant: 8 parts, compound anti-hydrolysis agent: 4 parts, compound light stabilizer: 4 parts, lubricant: 6 parts, zinc oxide: 15 parts, Black masterbatch: 10 parts; Among them, PA66 resin, the melt index is 26g / 10min, the test condition is 275°C, 0.325Kg; PA6 resin, the melt index is 32g / 10min, the test condition is 230°C, 2.16Kg; polyacrylonitrile Based on continuous carbon fiber, the fiber diameter is 7 microns, and the linear density is 600g / km; the particle size of modified graphene is 24-220 microns, the carbon content is greater than 99%, and the thickness is 2.5-50 microns; antioxidants include N, N '-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hex...

Embodiment 2

[0058] (1) A kind of graphene, continuous carbon fiber synergistically reinforced polyamide composite material, this material slicing length 11-13mm, particle diameter 3.0mm, comprises the component of following weight ratio: PA6:120 parts, PA66:680 parts, Continuous carbon fiber: 200 parts, graphene: 10 parts; antioxidant: 8 parts, compound anti-hydrolysis agent: 4 parts, compound light stabilizer: 5 parts, lubricant: 8 parts, calcium oxide: 10 parts, black Masterbatch: 5 parts; Among them, PA66 resin, the melt index is 26g / 10min, the test condition is 275°C, 0.325Kg; PA6 resin, the melt index is 32g / 10min, the test condition is 230°C, 2.16Kg; polyacrylonitrile base Continuous carbon fiber with a fiber diameter of 7 microns and a linear density of 1200 g / km; modified graphene with a particle size of 24 to 220 microns, a carbon content greater than 99%, and a thickness of 2.5 to 50 microns; antioxidants include N, N' -Bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexamet...

Embodiment 3

[0066] (1) A kind of graphene, continuous carbon fiber synergistically reinforced polyamide composite material, this material granulation length 11-13mm, particle diameter 3.5mm, comprise the component of following weight ratio: PA6: 100 parts, PA66: 600 parts, Continuous carbon fiber: 300 parts, graphene 15 parts, antioxidant: 8 parts, compound anti-hydrolysis agent: 4 parts, compound light stabilizer: 3 parts, lubricant: 4 parts, zinc oxide 5 parts, black masterbatch : 15 parts; Among them, PA66 resin, the melt index is 24g / 10min, the test condition is 275°C, 0.325Kg; PA6 resin, the melt index is 20g / 10min, the test condition is 230°C, 2.16Kg; the continuous carbon fiber is polyacrylonitrile based continuous carbon fibers with a fiber diameter of 7 microns and a linear density of 4800 g / km; antioxidants include N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl) Hexamethylenediamine (antioxidant 1098) and bis(2,4-dicumylphenyl) pentaerythritol diphosphite (antioxidant ...

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Abstract

The invention discloses a graphene and continuous carbon fiber synergistically-reinforced polyamide composite material and a preparation method thereof, wherein PA66, PA6, continuous carbon fiber, modified graphene, an antioxidant, a composite anti-hydrolysis agent, a composite light stabilizer, a lubricant, black masterbatch and a metal oxide are mixed, extruded, impregnated and granulated to prepare the graphene and continuous carbon fiber synergistically-reinforced polyamide composite material, wherein the surface of graphene is pre-treated with sodium dodecyl benzene sulfonate and a silane coupling agent to form the modified graphene. According to the present invention, the modified graphene is added, the anti-hydrolysis agent and the composite light stabilizer are compounded, and the polyamide material is modified through the melting impregnation pultrusion process, such that the prepared material has advantages of excellent rigidity, excellent impact toughness, excellent weathering resistance and good hydrolysis resistance, no fiber is exposed to the surface of the injection molding product, and the applications of carbon fiber reinforced polyamide in different fields can be met.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a graphene and continuous carbon fiber synergistically reinforced polyamide composite material and a preparation method thereof. Background technique [0002] The main molecular chain of nylon 66 (PA66) contains strong polar amide groups, and the hydrogen bonds between the amide groups make the intermolecular bonding stronger and the structure is easy to crystallize, so the material has good mechanical properties, such as strength High, good rigidity, impact resistance, etc., also has the advantages of oil and chemical resistance, wear resistance, self-lubrication and good processing fluidity, especially heat resistance and creep resistance are better. In addition, the raw material of PA66 is easy to obtain and the cost is low, so it is widely used in industries, clothing, decoration, engineering plastics and other fields. However, PA66 has poor impact performance in d...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08L79/00C08K13/06C08K9/04C08K9/06C08K3/04C08K7/06C08K5/5398C08K5/3435C08K5/132C08K3/22B29B9/06B29C47/92B29C48/92
CPCC08L77/06B29B9/06B29C48/92B29C2948/92704C08K2201/003C08L2205/02C08L2205/035C08L77/02C08L79/00C08K13/06C08K9/04C08K9/06C08K3/04C08K7/06C08K5/5398C08K5/3435C08K5/132C08K2003/2296C08K2003/2206
Inventor 杨桂生蒋超杰姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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