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A kind of preparation method of high temperature resistant coated iron oxide black

An iron oxide black and coated technology, applied in the field of chemical pigments, can solve the problems of limiting the use range of iron oxide black, fading, discoloration, etc., and achieve the effects of good acid resistance, high tinting strength and good compatibility

Active Publication Date: 2015-12-02
ANHUI LINGYANG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When iron oxide black is used in some high temperature occasions, fading and discoloration will occur, 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

[0008] A preparation method of high temperature-resistant coated iron oxide black, using the iron oxide black obtained by the sodium hydroxide oxidation method, directly using the undried iron oxide black filter cake, adding 8% of the weight of the iron oxide black filter cake Coal gangue powder and 2% beryllium oxide, 2000rpm high-speed grinding for 15 minutes, take out and dry, add absolute ethanol equivalent to 15 times the amount of powder, heat up to 50 ° C, stir for 1 hour, then add 0.3% rosinamine, 0.1% Vinyltriethoxysilane and 0.3% corundum powder, keep stirring for 2 hours, vacuum filter, wash 3 times with absolute ethanol, vacuum dry at 50°C for 4 hours, grind finely, and pass through a 50-mesh sieve to obtain the finished product.

[0009] The iron oxide black product performance analysis data that present embodiment produces is as following table:

[0010] project

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PUM

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Abstract

The invention discloses a preparation method for high temperature-resistant coated iron oxide black. According to the method, a sodium hydroxide oxidation process is utilized to prepare iron oxide black; an undried iron oxide black filter cake is directly used, gangue powder and beryllia respectively accounting for 5 to 10% and 2 to 3% of the weight of the iron oxide black filter cake are added, and grinding at a high speed of 1500 to 2000 rpm is carried out for 15 to 20 min; powder obtained after grinding is taken out and dried, then absolute ethyl alcohol 15 to 20 times of the powder is added, a temperature is allowed to rise to 40 to 60 DEG C, and stirring is carried out for 1 to 1.5 h; then 0.2 to 0.4% of rosin amine, 0.1 to 0.2% of vinyltriethoxysilane and 0.3 to 0.4% of corundum powder are added, and heat-preservation stirring is carried out for 2 to 3 h; and then vacuum pumping filtration, washing, vacuum drying, porphyrization and sieving are carried out so as to obtain a finished product. Through formation of a compact corundum powder coating on the surface of iron oxide black, heat resistance of iron oxide black is improved, and fluidity and dispersibility of an iron oxide black pigment are enhanced at the same time.

Description

technical field [0001] The invention relates to a preparation method of high-temperature-resistant coated iron oxide black, which belongs to the field of chemical pigments. Background technique [0002] Iron-based pigments are important inorganic color pigments, and their annual output ranks first in inorganic color pigments. Due to the strengthening of the world's environmental protection awareness, inorganic iron-based pigments have continuously replaced organic pigments, red lead, lead chrome yellow and other lead-based and chromium-based toxic inorganic pigments due to their non-toxic, odorless, and non-polluting characteristics. Iron oxide black is widely used in paints and coatings in the construction industry due to its simple chemical composition, non-toxic and pollution-free, and strong chemical stability. However, iron oxide black will dehydrate and oxidize to iron red when the temperature reaches about 100°C. When iron oxide black is used in some high temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/24C09C3/08C09C3/12C09C3/06C09C3/04
Inventor 刘玉王杰林秀龙
Owner ANHUI LINGYANG NEW MATERIAL CO LTD