Heat-resistant iron oxide yellow pigment and method for preparing same

A technology of iron oxide yellow and pigments, applied in chemical instruments and methods, inorganic pigment treatment, powder coatings, etc., can solve the problems of poor thermal stability of iron oxide yellow, coloring application limitations, etc., achieve high industrial application value, and simple synthesis method , low cost effect

Inactive Publication Date: 2017-08-11
HUZHOU TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor thermal stability of iron oxide yellow, it is relatively limited in the application of plastic processing and powder coating coloring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 20Kg iron oxide yellow pigment 810#, and evenly disperse iron oxide yellow in 200L water under stirring to form a mixed solution with iron oxide yellow content of 10%; weigh 2.4Kg magnesium sulfate, 0.8Kg sodium hydroxide, 2.04Kg Sodium hexametaphosphate was dissolved in 100L water respectively to form solution A, solution B and solution C; then solution A, solution B and solution C were added to the iron oxide yellow mixture under stirring, and ultrasonically dispersed, the reaction temperature Control the temperature at 80°C, and continue to stir for 3 hours after adding the solution; after pressure filtration and washing, the filter cake is dried and crushed at 90°C to obtain heat-resistant iron oxide yellow product A.

Embodiment 2

[0016] Weigh 10Kg iron oxide yellow pigment 810#, and evenly disperse iron oxide yellow in 200L water under stirring to form a mixed solution with iron oxide yellow content of 5%; weigh 9.84Kg calcium nitrate, 2.4Kg sodium hydroxide, 6.12Kg Sodium hexametaphosphate was dissolved in 30L water respectively to form solution A, solution B and solution C; then solution A, solution B and solution C were added to the iron oxide yellow mixture under stirring, and ultrasonically dispersed, the reaction temperature Control at 70°C, and continue to stir for 10 hours after adding the solution; after pressure filtration and washing, the filter cake is dried and crushed at 100°C to obtain heat-resistant iron oxide yellow product B.

Embodiment 3

[0018] Weigh 30Kg iron oxide yellow pigment 810#, and evenly disperse iron oxide yellow in 100L water under stirring to form a mixed solution with iron oxide yellow content of 30%; weigh 3.16Kg strontium chloride, 0.88Kg sodium hydroxide, 2.04 Kg sodium hexametaphosphate, dissolved in 80L water respectively to form solution A, solution B and solution C; The temperature was controlled at 50°C, and the stirring was continued for 18 hours after adding the solution; after pressure filtration and washing, the filter cake was dried and crushed at 80°C to obtain heat-resistant iron oxide yellow product C.

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PUM

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Abstract

The invention relates to heat-resistant iron oxide yellow pigment and a method for preparing the same. The heat-resistant iron oxide yellow pigment and the method have the advantages that soluble alkaline-earth metal salts, sodium hexametaphosphate and sodium hydroxide are used as reaction materials, ultrasonic dispersion technologies and organic dispersing agents are introduced into coating procedures, alkaline-earth metal phosphate is coated on the surfaces of iron oxide yellow pigment by means of reaction, accordingly, the heat resistance of iron oxide yellow can be improved by formed composite materials, and the heat-resistant iron oxide yellow pigment can be used as a colorant during plastic processing and powder coating application; the coated iron oxide yellow is good in heat resistance, the method for synthesizing the heat-resistant iron oxide yellow pigment is simple, safe and environmentally friendly and is low in cost, the heat-resistant iron oxide yellow pigment and the method have high industrial application value, and the like.

Description

technical field [0001] The invention relates to a heat-resistant iron oxide yellow pigment and a preparation method thereof. Background technique [0002] In recent years, China's iron oxide industry has entered a stage of overcapacity and competition. Overcapacity is a major problem facing the entire iron oxide industry. At present, my country's iron oxide industry is still in the extensive development stage, and there is a lack of innovation in products and processes. It is impossible to transform resource advantages into economic and technological advantages. [0003] Iron oxide yellow, referred to as iron yellow, is ferric oxide containing water, and its molecular formula is FeOOH. Iron oxide yellow is a lemon yellow to brown powder. Due to different production methods and operating conditions, its crystal structure and physical properties will vary greatly. big difference. When iron oxide yellow is above 177°C, it will gradually lose crystal water and turn into iron o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/03C08K9/02C08K9/10C08K3/22C09C1/24C09C3/06
CPCC08K3/22C08K9/02C08K9/10C08K2003/2272C09C1/24C09C3/06C09D5/038C09D7/62
Inventor 潘国祥李金花沈辉徐敏虹吴周依婷周佳豪陆晶晶郑卫红倪生良曹枫
Owner HUZHOU TEACHERS COLLEGE
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