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Method for preparing high-dispersion black iron oxide particles

An iron oxide black, high dispersibility technology, applied in chemical instruments and methods, dyed high molecular organic compound treatment, dyed low molecular organic compound treatment, etc. and other problems, to achieve the effect of good acid resistance, strong alkali resistance and high tinting strength

Active Publication Date: 2013-09-11
TONGLING RELY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, iron oxide black will fade and change color at higher temperatures, and its heat resistance is poor, which limits the scope of use of iron oxide black.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A preparation method of highly dispersible iron oxide black particles comprises the following steps:

[0015] (1) Weigh polyethylene glycol, methylcellulose and Span-80 in a weight ratio of 4:2:1, add them to 15 times deionized water, heat in a water bath to 60°C, and disperse ultrasonically for 25 minutes to obtain a viscous liquid;

[0016] (2) Add 3% nano-silica and 2% monoglyceride stearate to the viscous liquid prepared above, and disperse for 15 minutes at 2500rpm high-speed shear to obtain nano-silica and carbon black modified viscosity liquid;

[0017] (3) Take 145 parts by weight of iron oxide black and add it to the granulator for granulation, and at the same time, spray 70 parts of the modified viscous liquid prepared in step (2) evenly on the iron oxide black powder to form an oxide black powder. Iron black small particles;

[0018] (4) Dry the iron oxide black particles prepared in step (3) at 90°C, and pass through a 60-mesh sieve to ...

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Abstract

The invention discloses a method for preparing high-dispersion black iron oxide particles. The method comprises the following concrete steps of: dissolving polyethylene glycol, methylcellulose and span-80 into deionized water according to a certain weight ratio to obtain viscous liquid; adding nano silica and carbon black to the prepared viscous liquid to modify; feeding black iron oxide to a pelletizer to pelletize; evenly spraying the modified vicious liquid on black iron oxide powder to form black iron oxide granules; drying and screening to obtain the product, namely nano-silica and 1.5-2.5% of stearic acid monoglyceride.

Description

technical field [0001] The invention relates to a preparation method of iron oxide black, in particular to a preparation method of highly dispersible iron oxide black particles. Background technique [0002] Iron oxide black, the molecular formula is Fe 3 o 4 , is black powder, is Fe 2 o 3 It is an adduct with FeO, insoluble in water, magnetic, and has high coloring power and hiding power. As one of the iron-based pigments, iron oxide black is widely used in phenolic anti-rust paint fillers and heavy-duty anti-corrosion paint primers in the construction industry due to its non-toxic, odorless, and non-polluting characteristics; it is used in rubber, plastic When coloring, it has the effect of strengthening aging and protecting organic matter from being degraded by ultraviolet light; in addition, it is also used for coloring of artificial marble, ceramics and cement floors. However, iron oxide black will fade and change color at higher temperatures, and its heat resi...

Claims

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Application Information

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IPC IPC(8): C09C1/24C09C3/00C09C3/06C09C3/10C09C3/08
Inventor 姚佐胜孙晓庆章志海曹阳黄忠达杜松松刘凡缪志剑沃承立
Owner TONGLING RELY TECH