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Light prepreg for unmanned aerial vehicle shell and preparation method of prepreg

A prepreg and drone technology, applied in the field of prepreg for drone shell and its preparation, can solve the problems of high curing temperature, high pressure forming, high density, etc., and achieve excellent dielectric properties, high strength, low density effect

Inactive Publication Date: 2015-02-18
HARBIN GUANGLONG GENERAL AVIATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high curing temperature, high pressure molding and high density of existing prepregs used for UAV casings, the present invention provides a prepreg for lightweight UAV casings and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Embodiment 1: A lightweight, 60°C curable epoxy resin prepreg is made of a lightweight, 60°C curable epoxy resin system impregnated with reinforcing materials, wherein: light, 60°C curable epoxy resin According to the mass percentage, it is composed of 30-80% epoxy resin mixture, 1-20% nano-particles, 1-10% hollow microspheres and 5-40% curing agent system mixture, of which: epoxy resin mixture is based on mass The percentage is composed of 20~60% solid or semi-solid epoxy resin and 40~80% liquid epoxy resin. The curing agent system mixture is composed of 40~90% curing agent and 10~60% accelerator by mass percentage mixed.

[0018] The minimum curing temperature of the prepreg designed in this embodiment is 60°C. The lower curing temperature can reduce the manufacturing cost of composite products and improve the dimensional stability of the product; this prepreg is suitable for low-pressure forming processes such as vacuum forming; The density of the composite material...

specific Embodiment approach 2

[0019] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the described solid or semi-solid epoxy resin is bisphenol A type epoxy resin, bisphenol S type epoxy resin and novolac epoxy resin One or several combinations; liquid epoxy resins are bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, trifunctional epoxy resin, tetrafunctional epoxy resin, phenolic aldehyde One or a combination of varnish-type epoxy resins and formaldehyde-type varnish-type epoxy resins.

specific Embodiment approach 3

[0020] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the nanoparticles are rubber-like nano-core-shell particles, titanium nanoparticles modified with amino groups or hydroxyl groups, silica nanoparticles modified with amino groups or hydroxyl groups. A type of particle.

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Abstract

The invention discloses a light prepreg for an unmanned aerial vehicle shell and a preparation method of the prepreg, relating to a prepreg and a preparation method thereof. The prepreg disclosed by the invention is made of epoxy resin system penetrated reinforcing material, wherein the epoxy resin system consists of the following components in percentage by mass: 30-80 percent of epoxy resin mixture, 1-20 percent of nano particles, 1-10 percent of hollow microspheres and 5-40 percent of curing agent system mixture; the epoxy resin mixture is prepared by mixing the components in percentage by mass: 20-60 percent of solid state or semi-solid state epoxy resin and 40-80 percent of liquid epoxy resin; and the curing agent system mixture is formed by mixing the components in percentage by mass: 40-90 percent of curing agent and 10-60 percent of curing agent. The prepreg can be cured at 60 DEG C and is suitable for low-pressure molding processes such as a vacuum bag molding process. The cured prepreg has small density, high strength and excellent dielectric properties and is suitable for preparing light and high-strength unmanned aerial vehicle shells, particularly unmanned aerial vehicle shells with wave-transparent requirements.

Description

technical field [0001] The invention relates to a prepreg and a preparation method thereof, in particular to a prepreg for an unmanned aerial vehicle casing and a preparation method thereof. Background technique [0002] As a body platform, the UAV casing should have the following characteristics: light structure, low cost, and long storage life. UAVs have high requirements for weight reduction. Only by controlling the structural weight coefficient below 30% can the weight space be vacated for fuel, payload, and weight gain caused by compensation for stealth, which meets the requirements of light structure, long endurance, and high stealth. , high mobility and other technical requirements. According to statistics, the amount of various advanced UAV composite materials in the world generally accounts for 60-80% of the total weight of the airframe structure, and some aircraft are not all composite materials. The application of composite materials has the following significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/06C08K9/04C08K3/36C08K3/08C08K7/28C08K7/22C08K7/14C08K7/10C08G59/56C08J5/24C08J5/18C08J5/04
Inventor 邳志刚魏鑫李伟何洪波刘遥
Owner HARBIN GUANGLONG GENERAL AVIATION TECH
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