Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of nano cobalt powder slurry and preparation method thereof

A nano-cobalt, slurry technology, applied in mixing methods, chemical instruments and methods, dissolution and other directions, can solve the problems of many components, affecting the properties and practicability of nano-materials, and many impurities

Inactive Publication Date: 2011-11-30
BEIJING NACHEN TECH DEV
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods also have many components and many impurities introduced into the system, which affect the properties and practicability of nanomaterials.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A nano-cobalt powder slurry, the nano-cobalt powder slurry is composed of the following components in parts by weight (g): 8.5 for nano-cobalt powder with a particle diameter of 30nm, 0.3 for silane coupling agent KH570, and 85 for ethanol; The chemical name of the silane coupling agent KH570 is: γ-(methacryloyloxy)propyltrimethoxysilane;

[0029] The preparation method of the above-mentioned nano-scale cobalt powder slurry comprises the following steps:

[0030] (1) Add silane coupling agent KH570 into ethanol according to the proportion, and stir evenly;

[0031] (2) Nano cobalt powder is dropped in the above-mentioned mixed solution;

[0032] (3) Ultrasonic dispersion for 20 minutes;

[0033] (4) ball milling with a planetary ball mill for 0.5 hour to make a slurry;

[0034] (5) Remove the ball mill tank and pour out the slurry.

[0035] The prepared slurry is a black gray emulsion, and the light transmittance of the slurry is 15% as measured by an ultraviolet-vi...

Embodiment 2

[0037] A kind of nano cobalt powder slurry, by weight (g) this nano cobalt powder slurry is made up of following components: the nano cobalt powder that particle diameter is 20nm is 5, silane coupling agent KH570 is 0.25, ethylene glycol is 100; the chemical name of the silane coupling agent KH570 is: γ-(methacryloyloxy)propyltrimethoxysilane;

[0038] The preparation method of the above-mentioned nano-scale cobalt powder slurry comprises the following steps:

[0039] (1) Add silane coupling agent KH570 into ethylene glycol according to the proportion, and stir evenly;

[0040](2) Nano cobalt powder is dropped in the above-mentioned mixed solution;

[0041] (3) Ultrasonic dispersion for 5 minutes;

[0042] (4) use planetary ball mill ball milling for 0.6 hour to make slurry;

[0043] (5) Remove the ball mill tank and pour out the slurry.

[0044] The prepared slurry is a black gray emulsion, and the light transmittance of the slurry is 12% as measured by an ultraviolet-vis...

Embodiment 3

[0046] A nano-cobalt powder slurry, the nano-cobalt powder slurry is composed of the following components in parts by weight (g): a particle size of 30nm nano-cobalt powder is 3, oleic acid is 0.3, and chloroform is 96;

[0047] The preparation method of the above-mentioned nano-scale cobalt powder slurry comprises the following steps:

[0048] (1) Oleic acid is added in the chloroform by proportioning, stirs;

[0049] (2) Nano cobalt powder is dropped in the above-mentioned mixed solution;

[0050] (3) Ultrasonic dispersion for 10 minutes;

[0051] (4) ball milling with a planetary ball mill for 0.3 hour to make a slurry;

[0052] (5) Remove the ball mill tank and pour out the slurry.

[0053] The prepared slurry is a black gray emulsion, and the light transmittance of the slurry is 17% as measured by an ultraviolet-visible spectrophotometer. Take part of the slurry and pour it into a centrifuge tube with a diameter of 2cm and a liquid column height of 8cm. Centrifuge at ...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nano cobalt powder slurry. The nano cobalt powder slurry is composed of the following components in parts by weight: 0.5-20 nano cobalt powder, 0.05-3 dispersant, and 85-100 solvent; Wherein the dispersant is anionic alkyl salt, polymer compound, fatty acid, fatty acid salt or alkali metal phosphate, silane coupling agent, titanate coupling agent; the solvent is alcohols, water, ketones , Esters, aliphatic hydrocarbons, alicyclic hydrocarbons, halogenated hydrocarbons, aromatic hydrocarbons. The preparation method comprises the following steps: (1) adding the dispersant into the solvent according to the proportion and stirring evenly; (2) putting the nano-cobalt powder into the above mixed liquid; (3) ultrasonicating for 0.05-0.5 hours; (4) ) ball milling and dispersing for 0.3-1 hour to obtain a finished product. The present invention uses a suitable dispersant to process the nano-cobalt powder, plus the joint action of ultrasound and ball milling, so that the nano-cobalt powder can be highly dispersed in the medium to form a uniform and stable slurry.

Description

technical field [0001] The invention relates to a nano material and a preparation method thereof, in particular to a nano cobalt powder slurry and a preparation method thereof. Background technique [0002] Nano cobalt powder is a widely used nano material. Cobalt powder is the best metal binder. In the process of producing cemented carbide products, the quality of cobalt powder becomes the decisive factor. Nano-cobalt powder can diffuse rapidly during the sintering process to form a stable and uniform distribution, making it possible to Produce parts with high density, high hardness, high tensile strength, high impact strength, fatigue resistance and high corrosion resistance; it has the advantages of high recording density, high coercive force, high signal-to-noise ratio and good oxidation resistance, etc. Improve the performance of magnetic tapes and large-capacity soft and hard disks; nano-cobalt powder has a special absorption effect on electromagnetic waves, and nano-...

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): B01F3/12B22F9/00
Inventor 刘艳翟金玲桂莹芳张波张蕾谷星雪方进轩
Owner BEIJING NACHEN TECH DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com