Nano zinc oxide modified epoxy resin composite material and preparation method thereof

A technology of nano-zinc oxide and epoxy resin, which is applied in the field of composite materials, can solve problems such as interface defects, material performance degradation, and weak bonding force of base materials, and achieve excellent nonlinear electrical properties, excellent partial discharge resistance, and improved resistance The effect of the electric level

Inactive Publication Date: 2017-03-22
XIAN UNIV OF TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, directly adding nano-zinc oxide to epoxy resin will cause interface defects due to the disadvantages of easy agglomeration, poor dispersion, and weak binding force with the base material, which will reduce the performance of the material.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nano zinc oxide modified epoxy resin composite material and preparation method thereof
  • Nano zinc oxide modified epoxy resin composite material and preparation method thereof
  • Nano zinc oxide modified epoxy resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1, weigh the following components by weight: 100 parts of bisphenol A epoxy resin E-51, 0.25 parts of KH570, 150 parts of water-acetone solution, 15 parts of nano zinc oxide, 100 parts of methyl tetrahydrophthalic anhydride, DMP-30 0.6 parts, DH410 10 parts;

[0044] Step 2, at room temperature, mix KH570 and water-acetone solution, adjust the pH to 6 with hydrochloric acid, and carry out the hydrolysis reaction for 3 hours; then add nano-zinc oxide, in a constant temperature water bath at 60°C, with a rotation speed of 1200r / min, stir for 60 minutes and then depressurize Filter, wash with deionized water until there is no chloride ion, and activate the product at 120°C for 9 hours after drying to obtain modified nano-zinc oxide;

[0045] Step 3, add the modified nano-zinc oxide obtained in step 2 into bisphenol A epoxy resin E-51, stir and sonicate at a speed of 1200r / min in a water bath at 50°C, and ultrasonically treat with a power of 200W , The frequency is 40...

Embodiment 2

[0050] Step 1, weigh the following components by weight: 100 parts of bisphenol A epoxy resin E-51, 0.35 parts of KH570, 100 parts of water-acetone solution, 10 parts of nano zinc oxide, 70 parts of methyl tetrahydrophthalic anhydride, 1 part of DMP-30, 12 parts of DH410;

[0051] Step 2, at room temperature, mix KH570 and water-acetone solution, adjust the pH to 5 with hydrochloric acid, and carry out the hydrolysis reaction for 3.5 hours; then add nano-zinc oxide, in a constant temperature water bath at 70°C, with a rotation speed of 1500r / min, stir for 50 minutes and then reduce Filter under pressure, wash with deionized water until there is no chloride ion, and activate the product at 140°C for 8 hours after drying to obtain modified nano-zinc oxide;

[0052] Step 3, add the modified nano-zinc oxide obtained in step 2 into bisphenol A epoxy resin E-51, stir and sonicate at a speed of 1500r / min in a water bath at 60°C, and ultrasonically treat with a power of 800W , Freque...

Embodiment 3

[0057] Step 1, weigh the following components by weight: 100 parts of bisphenol A epoxy resin E-51, 0.45 parts of KH570, 50 parts of water-acetone solution, 20 parts of nano-zinc oxide, 90 parts of methyltetrahydrophthalic anhydride, 2 copies of DMP-30, 8 copies of DH410;

[0058] Step 2, at room temperature, mix KH570 and water-acetone solution, adjust the pH to 4 with hydrochloric acid, and carry out the hydrolysis reaction for 4 hours; then add nano-zinc oxide, under a constant temperature water bath at 80°C, the speed is 1800r / min, stir for 40 minutes and then depressurize Filter, wash with deionized water until there is no chloride ion, and activate the product at 110°C for 9 hours after drying to obtain modified nano-zinc oxide;

[0059] Step 3, add the modified nano-zinc oxide obtained in step 2 into bisphenol A epoxy resin E-51, stir and sonicate at a speed of 1800r / min in a water bath at 70°C, and ultrasonically treat with a power of 400W , Frequency 20kHz, processin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a nano zinc oxide modified epoxy resin composite material, which is composed of the following components by weight: 100 parts of epoxy resin, 0.25-0.75 part of a coupling agent, 50-150 parts of a water-acetone solution, 10-20 parts of nano zinc oxide, 70-120 parts of a curing agent, 0.6-3 parts of a promoter, and 2-12 parts of a toughening agent. The preparation method includes: adding modified nano zinc oxide into epoxy resin, conducting stirring under a water bath condition and performing ultrasonic treatment; then adding the curing agent, the promoter and the toughening agent, further performing stirring and ultrasonic treatment; and then carrying out vacuum defoaming and curing, thus obtaining the composite material. The composite material provided by the invention has excellent electrical characteristics, especially under a vacuum condition, in an electric field with extremely uneven needle-plate electrode, the composite material has excellent partial discharge resistance, partial discharge initial voltage increased by 29.2% than that of pure epoxy resin, thus providing the basis for improving the electrical resistance level of the material in a non-uniform electric field. Also the preparation method of the composite material provided by the invention is low in cost.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a nano zinc oxide modified epoxy resin composite material, and also relates to a preparation method of the composite material. Background technique [0002] Among many polymer dielectrics, epoxy resin is widely used as an insulating material for electrical equipment in power systems due to its good electrical insulation properties. However, cured epoxy resins often have disadvantages such as short fatigue life, heat resistance, susceptibility to stress cracking, and poor impact toughness. The study found that by adding nanoparticles, the mechanical and electrical properties of epoxy resins were improved to a certain extent. Nano-zinc oxide has better nonlinear pressure-sensitive properties than other nano-materials, and the composite material with nano-zinc oxide as filler has excellent nonlinear properties, which can play an important role in improving t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L63/00C08K9/06C08K3/22
CPCC08K3/22C08K9/06C08K2003/2296C08K2201/011C08K2201/006C08K2201/003C08L63/00
Inventor 杨国清郭玥季东旭王德意王诗成黎洋
Owner XIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap