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Method for preparing flame-retardant iron oxide black granules

A technology of iron oxide black and particles, which is applied in chemical instruments and methods, dyeing polymer organic compound treatment, inorganic pigment treatment, etc., can solve the problems of limited use range of iron oxide black, poor heat resistance stability, fading, etc., and achieve improvement High strength and heat resistance, strong alkali resistance, high coloring power

Active Publication Date: 2013-09-11
TONGLING RELY TECH
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  • Summary
  • Abstract
  • Description
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  • 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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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A preparation method of flame-retardant black iron oxide particles includes the following steps:

[0015] (1) Weigh polyvinylpyrrolidone, aluminum oxide and antimony oxide in a weight ratio of 4:3:1, add 15 times deionized water, heat the water bath to 60°C, and ultrasonically disperse for 30 minutes to obtain a viscous liquid;

[0016] (2) Add 1.5% fumed silica and 2% simethicone to the viscous liquid prepared above, and disperse at high speed at 2500rpm for 20 minutes to obtain the modified viscosity of fumed silica and simethicone. liquid;

[0017] (3) Take 110 parts by weight of iron oxide black and add it to the granulator for granulation. At the same time, spray 50 parts of the modified viscous liquid prepared in step (2) evenly on the iron oxide black powder to form oxidation Iron black particles;

[0018] (4) Dry the iron oxide black particles obtained in step (3) at 85°C, and then pass through a 40-mesh sieve to obtain the finished product.

[0019] ...

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PUM

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Abstract

The invention discloses a method for preparing flame-retardant iron oxide black granules. The method comprises the following specific steps of: dissolving polyethylene pyrrolidone, aluminum oxide and antimony trioxide into deionized water according to a certain weight ratio, so as to obtain viscous liquid; adding gas-phase white carbon black and simethicone to the obtained viscous liquid so as to carry out modification; and adding iron oxide black to a granulator for granulation while uniformly spraying the modified viscous liquid to iron oxide black powder, so as to form small iron oxide black granules, drying and sieving, thereby obtaining finished products. The iron oxide black granules prepared by the method have the characteristics of excellent temperature resistance, good acid and alkali resistance, strong light absorption, high coloring power, good compatibility, good dispersion and the like, and have huge market prospects.

Description

Technical field [0001] The invention relates to a preparation method of iron oxide black, in particular to a preparation method of flame-retardant 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 The adduct with FeO is insoluble in water, has magnetism, and has high tinting power and hiding power. Iron oxide black is one of the iron-based pigments. Because of its non-toxic, odorless, and non-polluting characteristics, it is widely used in the construction industry as phenolic anti-corrosive paint fillers, heavy-duty anti-corrosion paint primers, etc.; in rubber and plastics When it is colored, it has the effect of strengthening aging and protecting the organic matter from degradation by ultraviolet light. In addition, it is also used for the coloring of artificial marble, ceramics and cement floors. However, iron oxide black will undergo fading, discoloration and other phenomena at hi...

Claims

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Application Information

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