Preparation method of epoxy solution for cathodic electrophoresis of NdFeB magnets

A technology of cathodic electrophoresis and preparation method, applied in electrophoretic coatings, epoxy resin coatings, polyether coatings, etc., can solve problems such as easy rust, and achieve the effect of small orange peel value, good compatibility and low dry film density

Active Publication Date: 2020-03-06
廊坊京磁精密材料有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the electrophoretic paint film can resist salt, alkali, high temperature and high humidity, and water up to 60h, 8h, 480h, and 240h respectively. In some harsh environments with high temperature, high humidity, and high salinity, it still cannot meet the requirements. need, easy to rust

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
  • Preparation method of epoxy solution for cathodic electrophoresis of NdFeB magnets
  • Preparation method of epoxy solution for cathodic electrophoresis of NdFeB magnets
  • Preparation method of epoxy solution for cathodic electrophoresis of NdFeB magnets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The epoxy solution preparation method for cathodic electrophoresis of NdFeB magnets comprises: adding pure water, color paste, epoxy resin, and polyether to the tank body of the electrophoresis tank in sequence, circulating and raising the temperature to 30°C, and Continue to circulate for 9 hours under the condition of ℃ to obtain the epoxy solution, wherein, the color paste: epoxy resin: pure water is 1:6:7 by volume, and the volume of polyether is three times that of the color paste, epoxy resin, and pure water. 0.5% of the total volume of the liquid, the time for heating to 30°C is 5h.

Embodiment 2

[0033] The epoxy solution preparation method for cathodic electrophoresis of NdFeB magnets comprises: adding pure water, color paste, epoxy resin, and polyether to the tank body of the electrophoresis tank in sequence, circulating and raising the temperature to 32°C, and heating at 32°C Continue to circulate for 9 hours under the condition of ℃ to obtain the epoxy solution, wherein, the color paste: epoxy resin: pure water is 1:6:8 by volume, and the volume of polyether is three times that of the color paste, epoxy resin, and pure water. 1% of the total volume of the liquid, the time to warm up to 32°C is 6h.

Embodiment 3

[0035] The epoxy solution preparation method for cathodic electrophoresis of NdFeB magnets comprises: adding pure water, color paste, epoxy resin, and polyether to the tank body of the electrophoresis tank in sequence, circulating and raising the temperature to 31°C, and Continue to circulate for 9 hours under the condition of ℃ to obtain epoxy solution, wherein, the color paste: epoxy resin: pure water is 1:6:7.5 by volume, and the volume of polyether is three times that of color paste, epoxy resin, and pure water. 0.8% of the total volume of the liquid, the time for heating to 31°C is 5.5h.

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of an epoxy solution used for cathode electrophoresis of a neodymium-iron-boron magnet. The method comprises the following steps: sequentially adding purewater, color paste, epoxy resin and a polyether into a tank body of an electrophoresis tank, performing circulation, performing heating to temperature of 30-32 DEG C, and continuing circulation at temperature of 30-32 DEG C for 9h, so as to obtain the epoxy solution, wherein a volume ratio of the color paste to the epoxy resin to the pure water is 1:6:(7-8), a volume of the polyether is 0.5-1% ofa total volume of three liquids of the color paste, the epoxy resin and the pure water, and time for raising the temperature to 30-32 DEG C is 5-6 h. The method disclosed by the invention has the beneficial effects of improving salt resistance, alkali resistance, high-temperature high-humidity resistance and water resistance of a paint film.

Description

technical field [0001] The invention relates to the field of cathodic electrophoresis of NdFeB magnets. More specifically, the invention relates to a method for preparing an epoxy solution for cathodic electrophoresis of NdFeB magnets. Background technique [0002] Since the sintered NdFeB permanent magnet material is mainly composed of three phases: the main phase, the Nd-rich phase, and the Boron-rich phase. The standard electrode potential of neodymium is -2.413V, which shows that the chemical activity of neodymium is very high, and it is easy to chemically react with other substances. The primary battery can be formed in the medium, causing electrochemical corrosion. [0003] At present, the common types of industrial-scale NdFeB surface protection layers include metal coatings and organic coatings. Metal coating protection and organic coatings are especially important for the protection of NdFeB substrates. Compared with metal coatings, organic coatings have faster ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D171/00C09D5/44C09D7/61C09D7/65C09D7/63
CPCC09D5/4419C09D5/4457C09D5/4473C09D5/4492
Inventor 赵萍
Owner 廊坊京磁精密材料有限公司
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