Preparation method for functional fiberglass-reinforced epoxy resin composite material

A glass fiber and epoxy resin technology, applied in the nano field, can solve the problems of weak interface bonding and difficult wetting of composite materials, and achieve the effect of improving interface bonding strength and bonding performance.

Inactive Publication Date: 2011-10-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large difference in modulus between the glass fiber and the resin matrix, an

Method used

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  • Preparation method for functional fiberglass-reinforced epoxy resin composite material
  • Preparation method for functional fiberglass-reinforced epoxy resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0024] Example 1: Multi-walled carbon nanotubes (OD<8nm) prepared by arc discharge method and glass fibers are used as initial raw materials. After purification, acidification and acylation of multi-walled carbon nanotubes, acylated carbon nanotubes are obtained, and then reacting the acylated carbon nanotubes with a γ-aminopropyltriethoxysilane coupling agent solution to obtain a carbon nanotube surface grafted with a coupling agent, and then combining the carbon nanotubes grafted with a coupling agent on the surface with The glass fiber is reacted to obtain a functionalized glass fiber reinforced body; the obtained functionalized glass fiber reinforced body is compounded with an epoxy resin matrix to obtain a glass fiber reinforced epoxy resin composite material.

[0025] Step (1): In a 250mL single-necked round bottom flask equipped with a stirrer, add 1.1g of dried multi-walled carbon nanotube raw material and 100mL, 20% nitric acid solution, treat it under 1kHz ultrasonic ...

Embodiment 2

[0032] Example 2: Single-walled carbon nanotubes (OD<1nm) and glass fibers prepared by laser evaporation were used as initial raw materials. After purification, acidification and acylation of single-walled carbon nanotubes, acylated carbon nanotubes were obtained, and then The acylated carbon nanotubes are reacted with N-β (aminoethyl)-γ-aminopropyltrimethoxysilane coupling agent solution to obtain carbon nanotubes surface grafted with coupling agent, and then the surface grafted with The carbon nanotube of the coupling agent reacts with the glass fiber to obtain a functionalized glass fiber reinforced body; the obtained functionalized glass fiber reinforced body is compounded with an epoxy resin matrix to obtain a glass fiber reinforced epoxy resin composite material.

[0033] Step (1): In a 250mL single-neck round bottom flask equipped with a stirrer, add 2.1g of dried multi-walled carbon nanotube raw material and 100mL, 20% nitric acid solution, treat it under 50kHz ultrason...

Embodiment 3

[0040] Example 3: Single-walled carbon nanotubes (OD<10nm) prepared by laser evaporation method and glass fibers are used as initial raw materials. After purification, acidification and acylation of single-walled carbon nanotubes, acylated carbon nanotubes are obtained, and then The acylated carbon nanotubes are reacted with γ-aminoethylaminopropyltrimethoxysilane coupling agent solution to obtain carbon nanotubes with coupling agent grafted on the surface, and then carbon nanotubes with coupling agent grafted on the surface The tube reacts with the glass fiber to obtain a functionalized glass fiber reinforced body; the obtained functionalized glass fiber reinforced body is compounded with an epoxy resin matrix to obtain a glass fiber reinforced epoxy resin composite material.

[0041] Step (1): In a 250mL single-neck round bottom flask equipped with a stirrer, add 1.1g of dried multi-walled carbon nanotube raw material and 100mL, 30% sulfuric acid solution, treat it under 40kH...

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Abstract

The invention belongs to the field of nanotechnology, and particularly relates to a preparation method for a functional fiberglass-reinforced epoxy resin composite material. The preparation method provided by the invention comprises the following steps of: purifying carbon nanotubes, then carrying out carboxylation and acylation, carrying out a reaction on the acylated carbon nanotubes and a coupling agent with an active amino to obtain carbon nanotubes grafted with the coupling agent on the surface, and carrying out a reaction with fiberglass to obtain a functional fiberglass reinforcement body; and compounding the functional fiberglass reinforcement body with an epoxy resin base body to obtain the functional fiberglass-reinforced epoxy resin composite material. The preparation method has simple reaction steps, and utilizes the strength and toughness of carbon nanotubes to modify fiberglass; and the prepared reinforcement body can strengthen and toughen the resin base body and significantly improve the interfacial adhesion strength and the mechanical properties of the composite material. The composite material prepared by the preparation method provided by the invention can be widely applied in the technical fields of aerospace, automobile shipping, transport and communication, mechanical electronics, civilian devices, etc.

Description

technical field [0001] The invention belongs to the field of nanotechnology, and in particular relates to a preparation method of a functionalized glass fiber reinforced epoxy resin composite material. Background technique [0002] Carbon nanotubes (CNTs) have excellent properties such as ultra-high strength, great toughness, unique electrical conductivity, and thermal conductivity, and can be used as a reinforcing agent to greatly improve the mechanical properties of composite materials. Experiments show that the Young's modulus and tensile strength of a single carbon nanotube reach 1TPa and 150GPa, and the specific Young's modulus and specific strength are 20 times and 1000 times that of steel, respectively. Moreover, carbon nanotubes have ultra-high toughness (theoretical maximum elongation can reach 20%) and aspect ratio, and are ideal reinforcements for preparing high-performance composite materials. It can be used not only as a reinforcing agent for high-performance c...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/02C08K7/14C08K9/06C08K9/04C08K7/00C08K3/04
Inventor 邱军王宗明
Owner TONGJI UNIV
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