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Heatproof type easily dispersing ferric oxide yellow pigment and preparation method thereof

An iron oxide yellow, easy-to-disperse technology, applied in chemical instruments and methods, inorganic pigment treatment, dyeing low molecular organic compound treatment and other directions, can solve the problems of coloring application limitation, poor thermal stability of iron oxide yellow, etc., and achieve a simple synthesis method. , High industrial application value, good heat resistance and dispersion performance

Active Publication Date: 2017-08-25
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

[0015] 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; press filter and wash to obtain calcium phosphate-coated iron oxide yellow pigment filter cake; then calcium phosphate-coated iron oxide yellow pigment filter cake and sodium stearate ( The mass ratio of the two is 100:1) dispersed in water, heated to 70°C, stirred and reacted for 2 hours, after pressure filtration and washing, the filter cake was dried and crushed at 85°C to obtain heat-resistant ea...

Embodiment 2

[0017] 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 2.22Kg calcium chloride, 0.8Kg sodium hydroxide, 2.04 Kg sodium hexametaphosphate, dissolved in 100L water respectively to form solution A, solution B and solution C; Control the temperature at 80°C, and continue to stir for 3 hours after adding the solution; press filter and wash to obtain the iron oxide yellow pigment filter cake coated with calcium phosphate; then mix the iron oxide yellow pigment filter cake coated with calcium phosphate and sodium stearate (the mass ratio of the two is 50:1) dispersed in water, heated to 80°C, stirred and reacted for 3 hours, after pressure filtration and washing, the filter cake was dried and crushed at 90°C to obtain heat-resistant easily dispersible iron oxide Yellow Pigment Product B.

Embodiment 3

[0019] 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 2.22Kg calcium chloride, 0.88Kg sodium hydroxide, 2.04 Kg sodium hexametaphosphate, dissolved in 80L water respectively to form solution A, solution B and solution C; Control the temperature at 50°C, and continue to stir for 18 hours after adding the solution; press filter and wash to obtain a calcium phosphate-coated yellow iron oxide pigment filter cake; then mix the calcium phosphate-coated iron oxide yellow pigment filter cake with sodium stearate (the mass ratio of the two is 20:1) dispersed in water, heated to 60°C, stirred and reacted for 1 hour, after pressure filtration and washing, the filter cake was dried and crushed at 85°C to obtain heat-resistant easily dispersible iron oxide Yellow pigment product C.

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Abstract

The invention relates to a heatproof type easily dispersing ferric oxide yellow pigment and a preparation method thereof. Soluble calcium salt, sodium hexametaphosphate and sodium hydroxide are used as reaction raw materials, an ultrasonic dispersing technique is introduced in a cladding process, calcium phosphate is coated on the surface of the ferric oxide yellow pigment through reaction, and then the sodium stearate organic treatment modification for the surface is performed, so that a composite material is formed. The formed composite material can promote the heat resistance and dispersity of the ferric oxide yellow and can be used as a coloring agent in plastic processing and powder coating application. The cladding type ferric oxide yellow compounded according to the invention has the advantages of excellent heat resistance and dispersity, simple compounding method, low cost, safety, environmental protection, and the like, and has higher industrial application value.

Description

technical field [0001] The invention relates to an iron oxide yellow pigment, in particular to a heat-resistant easily dispersible 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 abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/24C09C3/04C09C3/06C09C3/08
CPCC09C1/24C09C3/006C09C3/04C09C3/063C09C3/08
Inventor 潘国祥徐敏虹李金花沈辉朱美刘燕郑卫红倪生良曹枫
Owner HUZHOU TEACHERS COLLEGE
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