Epoxy resin matrix nano-zinc oxide composite material and preparation method thereof

A nano-zinc oxide and epoxy resin technology, applied in the field of polymer-based nanocomposite materials, can solve the problems of poor crack resistance, reduced electrical performance, and high brittleness of pure epoxy resin

Inactive Publication Date: 2012-03-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Pure epoxy resins are often brittle and have poor crack resistance. Generally, inorganic fillers are added to improve their mechanical properties and reduce costs, but this will reduce their electrical properties

Method used

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  • Epoxy resin matrix nano-zinc oxide composite material and preparation method thereof
  • Epoxy resin matrix nano-zinc oxide composite material and preparation method thereof
  • Epoxy resin matrix nano-zinc oxide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 Shown, the preparation method of this epoxy resin-based nano-zinc oxide composite material comprises the following steps:

[0028] Step 1: Nano-zinc oxide, acetone, and epoxy resin are mixed with high-speed shearing. First, 0.5 parts by weight of nano-zinc oxide particles whose surface has been treated with KH560 are dried at 100 ° C for 6 hours, and then added to 40 parts by weight of ring In the mixed solution of epoxy resin diluent acetone and 100 parts by weight of epoxy resin, stir so that the dispersion is mixed without delamination, and then use a high-speed shear machine to process the dispersion for 15min at a speed of 5000r / min;

[0029] Step 2: Ultrasonic dispersion, use an ultrasonic generator to process the dispersion liquid after high-speed shearing treatment in step 1 with a power of 500W and a frequency of 20kHz for 15 minutes;

[0030] Step 3: Remove acetone in a water bath, put the dispersion treated by ultrasonic dispersion into a wa...

Embodiment 2

[0034] Such as figure 1 Shown, the preparation method of this epoxy resin-based nano-zinc oxide composite material comprises the following steps:

[0035] Step 1: Nano-zinc oxide, acetone, and epoxy resin are mixed with high-speed shearing. First, 9.5 parts by weight of nano-zinc oxide particles whose surface has been treated with KH550 are dried at 130 ° C for 8 hours, and then added to 60 parts by weight of ring In the mixed solution of epoxy resin diluent acetone and 100 parts by weight of epoxy resin, stir so that the dispersion is mixed without delamination, and then use a high-speed shear machine to process the dispersion for 40min with a rotating speed of 10000r / min;

[0036] Step 2: Ultrasonic dispersion, use the ultrasonic generator to process the dispersion liquid after the high-speed shearing treatment in step 1 with a power of 600W and a frequency of 24kHz for 30min;

[0037] Step 3: Remove acetone in a water bath, put the dispersion treated by ultrasonic dispersi...

Embodiment 3

[0041] Such as figure 1 Shown, the preparation method of this epoxy resin-based nano-zinc oxide composite material comprises the following steps:

[0042] Step 1: Nano-zinc oxide, acetone, and epoxy resin are mixed with high-speed shearing. First, 6 parts by weight of nano-zinc oxide particles whose surface has been mixed with KH570 and tetrabutyl titanate in any ratio are dried at 130°C for 10 hours. , then added to the mixed solution of 60 parts by weight of epoxy resin diluent acetone and 100 parts by weight of epoxy resin, stirred so that the dispersion was mixed without stratification, and then used a high-speed shearing machine to process the dispersion at a speed of 15000r / min Liquid 45min;

[0043] Step 2: Ultrasonic dispersion, the dispersion liquid after the high-speed shearing treatment in step 1 is treated with an ultrasonic generator at a power of 800W and a frequency of 22kHz for 45 minutes;

[0044]Step 3: Remove acetone in a water bath, put the dispersion tre...

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Abstract

The invention relates to an epoxy resin matrix nano-zinc oxide composite material and a preparation method of the epoxy resin matrix nano-zinc oxide composite material. The epoxy resin matrix nano-zinc oxide composite material comprises matrix resin, curing agent, accelerating agent and additive, wherein the matrix resin is epoxy resin, the curing agent is methy hexahydrophthalic anhydride, the accelerating agent is N, N- methylbenzylamine, and the additive is nano-zinc oxide; the epoxy resin matrix nano-zinc oxide composite material comprises the components in part by weight: 100 parts of the epoxy resin, 70-120 parts of the methy hexahydrophthalic anhydride, 1-4 parts of the N, N- methylbenzylamine, and 0.5-10 parts of the nano-zinc oxide; the preparation method of the epoxy resin matrix nano-zinc oxide composite material comprises the steps of: mixing the nano-zinc oxide, acetone, the epoxy resin, carrying out high-speed shearing and ultrasonic dispersion on the obtained mixture, removing the acetone by water bath, carrying out vacuum degassing after the curing agent and the accelerating agent are added, and curing by an oven. The epoxy resin matrix nano-zinc oxide composite material has the advantages of being excellent in dielectric property and especially strong in power frequency breaking down field strength. The preparation method of the epoxy resin matrix nano-zinc oxide composite material has the characteristic of low cost.

Description

technical field [0001] The invention belongs to the technical field of polymer-based nanocomposite materials, and in particular relates to an epoxy resin-based nano-zinc oxide composite material and a preparation method thereof. Background technique [0002] Epoxy resin is used as an insulating material for various electrical products due to its excellent electrical and mechanical properties, such as casting materials for power transformers, transformers, insulators and other electrical insulation, sealing insulation in circuit breakers, DC Impregnation of motor windings, etc. Insulating materials are the key conditions to ensure the normal operation of electrical appliances. The rapid development of the power industry has put forward higher requirements for the performance of insulating materials. Therefore, the development of new insulating materials or the improvement of the performance of the original insulating materials have always been It has been a research hotspot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K9/06C08K3/22
Inventor 徐阳杨文虎易冉曹晓珑
Owner XI AN JIAOTONG UNIV
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