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Surface deoiling detergent for magnetic NdFeB material and its usage method

A magnetic material, neodymium-iron-boron technology, applied in liquid cleaning methods, cleaning methods and utensils, chemical instruments and methods, etc., can solve the problems of easily corroded NdFeB matrix, failure to achieve expected results, material waste, etc., to achieve Short cleaning time, safe and convenient to use

Inactive Publication Date: 2008-04-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing material surface cleaners are mainly developed for iron and steel materials or metals or alloys such as zinc, tin, aluminum, copper, etc. The cleaning agents that can achieve good degreasing and decontamination effects on the surface of these materials are used in NdFeB materials The surface does not achieve the desired effect
First of all, the surface of NdFeB magnetic material is loose and porous, and it is difficult for ordinary cleaning agents to remove the oil in the pores; second, the cleaning agent is generally a strong alkaline solution, and the cleaning temperature is high, generally above 50°C, which is easy to corrode the NdFeB matrix, resulting in the deterioration of the material. waste or destroy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 60ml of the cleaning agent of formula 1, and wash it by soaking at 30°C for 10 minutes, stirring constantly during cleaning.

Embodiment 2

[0021] Take 60ml of cleaning agent of formula 1, and clean it by ultrasonic cleaning at 30°C for 3 minutes.

Embodiment 3

[0023] Take 60ml of the cleaning agent of formula 2, and wash it by soaking at 40°C for 12 minutes, stirring constantly during cleaning.

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PUM

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Abstract

The present invention discloses one kind of surface cleaning detergent for magnetic NdFeB material and is usage. The surface cleaning detergent consists of sodium hydroxide, sodium carbonate, trisodium phosphate, sodium pyrophosphate, OP-10 emulsifier, sodium dodecyl sulfonate and thiourea. The surface cleaning detergent has stable performance and long use period, and may be used to deiol completely through soaking at 30-50 deg.c for 10-15 min, and the deioling period may be further shortened in ultraosonic deioling.

Description

technical field [0001] The invention relates to a cleaning agent for degreasing and decontaminating the surface of a neodymium-iron-boron (NdFeB) magnetic material and a use method thereof, belonging to the technical field of cleaning metal materials by chemical methods. Background technique [0002] As a permanent magnetic material, NdFeB is widely used in computers, industrial automation, home appliances, communications and various electroacoustic devices due to its excellent magnetic properties and high cost performance. NdFeB magnetic materials have effectively promoted modern science and technology and information industry. The development of modernization is one of the important material foundations for promoting contemporary technology and social progress, and provides material guarantee for the emergence of new industries. NdFeB magnetic materials are composed of three phases, namely the main phase, Nd-rich phase and boron-rich phase. Since the Nd-rich phase and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/14B08B3/12
Inventor 严密应华根罗伟吴进明贺雪峰吴磊
Owner ZHEJIANG UNIV
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