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A kind of nano-zirconia/epoxy resin composite material and preparation method thereof

A technology of nano-zirconia and epoxy resin, which is applied in the field of nano-zirconia/epoxy resin composite materials and its preparation, can solve the problems of performance degradation, easy agglomeration of nano-zirconia particles, and damage to the compact structure of materials, and achieve shrinkage. Low, good adhesion, simple process effect

Active Publication Date: 2019-06-25
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, nano-zirconia particles are very easy to agglomerate, which will destroy the compact structure of the material, resulting in a decrease in performance. For the dispersion of nano-zirconia powder in epoxy resin, ultrasonic dispersion, high-speed stirring, and grinder are generally used to Simple conventional methods such as grinding and adding coupling agent modification are effectively combined to improve the dispersion of nanoparticles in the resin matrix, so that the performance of the composite material is significantly improved

Method used

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  • A kind of nano-zirconia/epoxy resin composite material and preparation method thereof
  • A kind of nano-zirconia/epoxy resin composite material and preparation method thereof
  • A kind of nano-zirconia/epoxy resin composite material and preparation method thereof

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Effect test

Embodiment 1

[0048] A nano-zirconia / epoxy resin composite material, comprising nano-zirconia particles and epoxy resin, the nano-zirconia particles are synthesized by an improved sol-gel combustion method, and the particle size is between 3 and About 10nm, the addition amount is 1wt% of the epoxy resin composite material; the epoxy resin is bisphenol A type epoxy resin.

[0049] The preparation method of described nanometer zirconia / epoxy resin composite material, comprises the following steps:

[0050] One, the ZrOCl 2 ·8H 2 O was dissolved in deionized water to form a 0.12mol / L solution; then NH was added to the solution 3 ·H 2 O generates a gel-like precipitate, which is centrifuged and washed several times with absolute ethanol to remove soluble impurities; the precipitate is dispersed in an organic solvent, and then added with Zr 4+ The molar ratios of HNO were 1.16 and 20, respectively 3 and H 2 o 2 Continue stirring for 24h to obtain a clear sol; then add urea and mix homogen...

Embodiment 2

[0055] A nano-zirconia / epoxy resin composite material, comprising nano-zirconia particles and epoxy resin, the nano-zirconia particles are synthesized by an improved sol-gel combustion method, and the particle size is between 3 and About 10nm, the addition amount is 3wt% of the epoxy resin composite material; the epoxy resin is bisphenol A type epoxy resin.

[0056] The preparation method of described nanometer zirconia / epoxy resin composite material, comprises the following steps:

[0057] One, the ZrOCl 2 ·8H 2 O was dissolved in deionized water to form a 0.12mol / L solution; then NH was added to the solution 3 ·H 2 O generates a gel-like precipitate, which is centrifuged and washed several times with absolute ethanol to remove soluble impurities; the precipitate is dispersed in an organic solvent, and then added with Zr 4+ The molar ratios of HNO were 1.16 and 20, respectively 3 and H 2 o 2 Continue stirring for 24h to obtain a clear sol; then add urea and mix homogen...

Embodiment 3

[0062] A nano-zirconia / epoxy resin composite material, comprising nano-zirconia particles and epoxy resin, the nano-zirconia particles are synthesized by an improved sol-gel combustion method, and the particle size is between 3 and About 10nm, the addition amount is 4wt% of the epoxy resin composite material; the epoxy resin is bisphenol A type epoxy resin.

[0063] The preparation method of described nanometer zirconia / epoxy resin composite material, comprises the following steps:

[0064] One, the ZrOCl 2 ·8H 2 O was dissolved in deionized water to form a 0.12mol / L solution; then NH was added to the solution 3 ·H 2 O generates a gel-like precipitate, which is centrifuged and washed several times with absolute ethanol to remove soluble impurities; the precipitate is dispersed in an organic solvent, and then added with Zr 4+ The molar ratios of HNO were 1.16 and 20, respectively 3 and H 2 o 2 Continue stirring for 24h to obtain a clear sol; then add urea and mix homogen...

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Abstract

The present invention discloses a nano zirconia / epoxy resin compound material and a preparation method thereof, and belongs to the technical field of material preparation. The nano zirconia / epoxy resin compound material comprises zirconia nanoparticles and an epoxy resin; and the zirconia nanoparticles can be uniformly dispersed in the epoxy resin matrix in an amount of 1-10 wt% of the epoxy resin. The method comprises the following steps: (1) the zirconia nanoparticles are prepared by a sol-gel combustion method; (2) a silane coupling agent is used to conduct surface-modifying of the zirconiananoparticles; (3) the modified zirconia nanoparticles are dispersed in the epoxy resin to form a uniform nano-zirconia / epoxy resin dispersion system; and (4) a curing agent is added to conduct curing. The ZrO2 nanoparticles synthesized by improving the sol-gel method are introduced into the epoxy resin dispersion system to significantly improve the toughness of the resin after the curing and greatly improve the mechanical properties of the epoxy resin. Besides, the nano zirconia / epoxy resin compound material is simple in preparation technology, low in production costs and mild in reaction conditions, can be subjected to batch production, and can meet the special requirements for the resin materials in various fields of aerospace, civil industry, etc.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a nano zirconia / epoxy resin composite material and a preparation method thereof. Background technique [0002] As a typical thermosetting resin, epoxy resin has outstanding advantages such as good adhesion, strong chemical stability, excellent electrical insulation and mechanical properties, low shrinkage, easy processing and low cost, and is widely used in aerospace, Many fields such as automobiles, ships, electronics, and building materials have become indispensable basic materials in the industrial field. As far as the aerospace field is concerned, the main structural parts of the aircraft have to rely on various resin matrix materials to reduce the weight and cost of the liquid oxygen tank. However, pure resin has high cross-linking density, brittleness, high internal stress, low impact strength, poor heat resistance, and low fatigue life after curing, which may c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K9/06C08K3/22
CPCC08K3/22C08K9/06C08K2003/2244C08K2201/003C08K2201/011C08L63/00
Inventor 周大雨马晓倩彭聪杨旭王静静孙纳纳武湛君
Owner DALIAN UNIV OF TECH
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