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Hyperdispersant, thermoplastic resin-based carbon fiber composite material and preparation method thereof

A thermoplastic resin and hyperdispersant technology, which is applied in the field of carbon fiber composite molding and processing, can solve the problems of difficult processing and insufficient mechanical properties, and achieve the effects of improving fluidity, improving mechanical properties, and enhancing interface strength.

Active Publication Date: 2021-11-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the defects of difficult processing and insufficient mechanical properties of thermoplastic resin-based carbon fiber composite materials described in the above prior art with high carbon fiber content, the present invention provides a hyperdispersant for thermoplastic resin-based carbon fiber composite materials. The provided hyperdispersant The agent can effectively improve the dispersion of carbon fibers, and realize the control of the resin fluidity and interfacial interaction on the carbon fiber surface, thereby improving the processing performance, and can also significantly improve the mechanical properties of thermoplastic resin-based carbon fiber composites

Method used

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  • Hyperdispersant, thermoplastic resin-based carbon fiber composite material and preparation method thereof
  • Hyperdispersant, thermoplastic resin-based carbon fiber composite material and preparation method thereof

Examples

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Embodiment 1

[0055] A hyperdispersant for thermoplastic resin-based carbon fiber composite materials, the hyperdispersant has a core-shell structure, including inorganic nanoparticles modified by a coupling agent as a core layer and a hyperbranched polymer as a shell layer.

[0056] The preparation method of the hyperdispersant of the present embodiment is as follows:

[0057] S1. Inorganic Nanoparticle Modification: Pretreatment of Fumed Nano Silica

[0058] Weigh a certain amount of gas-phase nano-silica and KH550 coupling agent and place them in a ball milling jar with a mass ratio of 2:1, add a small amount of 95% ethanol as a solvent, dilute the coupling agent to 0.8% mass concentration, and ball mill for 24 hours. drying to obtain modified nano silicon dioxide.

[0059] S2. Synthesis of hyperdispersants: Synthesis of hyperdispersants containing amine-ester bonds

[0060] Weigh 20.0g of methyl methacrylate and 20.0g of diethanolamine and add them to a four-necked flask equipped with...

Embodiment 2

[0063] This embodiment is the second embodiment of the hyperdispersant for thermoplastic resin-based carbon fiber composite material of the present invention, and the preparation method of the hyperdispersant of this embodiment is as follows:

[0064] S1. Inorganic Nanoparticle Modification: Pretreatment of Graphene Oxide

[0065] Weigh a certain amount of graphene oxide and isopropyl triisostearate titanate and place them in a ball mill jar with a mass ratio of 10:1, add a small amount of 95% ethanol as a solvent, and dilute the coupling agent to 0.5% mass concentration , ball milled for 24h. Dry to obtain modified graphene oxide.

[0066] S2. Synthetic hyperdispersant: Synthetic hyperdispersant containing ester bond

[0067] In a four-necked flask equipped with a stirrer, a drying tube and nitrogen gas, 80 mL of dimethylacetamide, 1 g of modified graphene oxide, 1.2 g of oxalic acid, 18 g of trimellitic anhydride, 2 g of pentaerythritol triacrylate, and 10 g of stearic aci...

Embodiment 3

[0069] This embodiment is the third embodiment of the hyperdispersant for thermoplastic resin-based carbon fiber composite material of the present invention, and the preparation method of the hyperdispersant of this embodiment is as follows:

[0070] S1. Modification of Inorganic Nanoparticles: Pretreatment of Carbon Nanotubes

[0071] Weigh a certain amount of strong acid-treated carbon nanotubes and DL-411-A coupling agent and place them in a ball mill with a mass ratio of 5:1, add a small amount of 95% ethanol as a solvent, and dilute the coupling agent to 0.5 % mass concentration, ball milled for 24h. drying to obtain modified carbon nanotubes.

[0072] S2. Synthetic hyperdispersant: Synthetic hyperdispersant containing ester bond

[0073] In a four-necked flask equipped with a stirrer, drying tube and nitrogen gas, sequentially add solvents 10mL toluene, 80mL xylene, 30mL dimethylacetamide, 1g modified carbon nanotubes, 26g trimesic acid, 10g neopentyl Glycol, 4 g dode...

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Abstract

The invention discloses a hyperdispersant, a thermoplastic resin-based carbon fiber composite material and a preparation method thereof. The hyperdispersant has a core-shell structure, including inorganic nanoparticles modified by a coupling agent as a core layer and inorganic nanoparticles as a shell layer. hyperbranched polymers. The thermoplastic resin-based carbon fiber composite material is mainly prepared from thermoplastic resin, carbon fiber and the above-mentioned hyperdispersant. The hyperdispersant provided by the invention can effectively improve the dispersibility of carbon fibers, and realize the regulation of resin fluidity and interfacial interaction on the surface of carbon fibers, thereby improving processing performance, and can also significantly improve the mechanical properties of thermoplastic resin-based carbon fiber composite materials.

Description

technical field [0001] The invention relates to the technical field of forming and processing carbon fiber composite materials, and more specifically, to a hyperdispersant, a thermoplastic resin-based carbon fiber composite material and a preparation method thereof. Background technique [0002] Carbon fiber is a filamentous carbon-based material with excellent mechanical properties such as light weight, high strength, and high modulus. As a reinforcement, carbon fiber can be combined with matrix materials such as thermoplastic resins to produce carbon fiber composite materials with excellent performance. Thermoplastic resins can undergo repeated heating, melting, and cooling to shape. The preparation of thermoplastic resin-based carbon fiber composite materials mostly adopts thermoforming method, and the molding time is from a few minutes to tens of minutes, that is, melt impregnation technology. [0003] Melt impregnation technology refers to making the molten thermoplas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08G63/127C08K9/06C08K3/36C08K9/04C08K3/04C08L77/02C08K9/02C08K9/10C08K7/06
CPCC08G83/005C08G63/127C08K9/06C08K3/36C08K9/04C08K3/042C08K3/041C08K9/02C08K9/08C08K9/10C08K7/06C08K2201/011C08L77/02
Inventor 黄逸夫阮文红章明秋
Owner SUN YAT SEN UNIV