LU501795B1 - A kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof - Google Patents
A kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof Download PDFInfo
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- LU501795B1 LU501795B1 LU501795A LU501795A LU501795B1 LU 501795 B1 LU501795 B1 LU 501795B1 LU 501795 A LU501795 A LU 501795A LU 501795 A LU501795 A LU 501795A LU 501795 B1 LU501795 B1 LU 501795B1
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- oxide yellow
- iron oxide
- yellow pigment
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/22—Compounds of iron
- C09C1/24—Oxides of iron
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/035—Coloring agents, e.g. pigments
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
This invention relates to a kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof, in which, soluble calcium salt, sodium hexametaphosphate and sodium hydroxide are used as reaction raw materials, ultrasonic dispersion technology is introduced in the coating process, calcium phosphate is coated on the surface of iron oxide yellow pigment through reaction, and then the surface sodium stearate is organically modified. The formed composite material improves the heat resistance and dispersibility of iron oxide yellow, and can be used as colorant in plastic processing and powder coating application. The coated iron oxide yellow synthesized by the invention has the advantages of good heat resistance and dispersibility, simple synthesis method, low cost, high safety, and it is environmental friendly and the like, making it have high industrial application value.
Description
Description 4501795 A kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof Technical Neid This invention relates to iron oxide yellow pigment, particularly relates io a kind of heat-resistant easily dispersible ron ode yellow pigment and preparation method thereof, Background in recent years, China's iron oxide industry has entered the phase of overcapacity and stiff competition, overcapacity is the main problem faced by the industry. At present, China's iron oxide industry is still in the extensive development phase, and there is a lack of innovation in products and processes. it is impossible to turn resource advantages into economic and technological advantages.
ron oxide yellow, referred to as iron yellow for short, is waler-containing ferric oxide with the molecular formula of FeQOH. Iron oxide yellow is a lemon yellow Io brown powder, and its crystal structure and physical properties differs due to different production methods and operating conditions. When the temperature of ron oxide yellow is above 177°C, the crystal water will graduaily be removed and it will become iron oxide red. Because of the poor thermal stability of iron oxide yellow, its application in plastic processing and powder coating coloring is greatly limited.
Furthermore, after the iron oxide yellow pigment is morganically coated, it often has poor disparsibility in the process of plastic processing and powder coating coloring, and is prong io aggiomerstion. The invention improves the heat resistance of the yellow iron oxide pigment and further improves the dispersibility of the pigment product Summary In order to overcome the deficiency of heat resistance of ron oxide yellow in plastic processing and powder coating application, the invention provides a kind of heat-resistant easily dispersibls iron oxide yellow pigment and preparation method thereof, according to this invention, a layer of dense calcium phosphate is coated on the iron oxide vellow to improve the heat resistance, then, the surface is modified with sodium sisarate to improve 795 the dispersibility of the product without reducing the heat resistance, so as to mest the application requirements of plastic processing and powder coatings.
The invention provides the technical solutions described as followings: The preparation method of a kind of heat-resistant easily dispersible iron oxide yellow pigment comprises the following steps: 1) dispersing won oxide yellow raw material in water under stirring to form iron oxide yellow mixed solution; 2) dissolving soluble calcium salt in water to prepare solution À, dissolving sodium hydroxide in water to prepare soiution B and dissolving sodium hexametaphosphate in water io prepare solution ©; 3) the solution À, the solution B and the solution C are simultaneously added into the mixed solution of iron oxide yellow with stirring, and ullrasonic dispersion is carried out, the reaction temperature is controlled at 50-2000, and stirring is continued for 05-20 Hours after the solution is added; filter pressing and washing to obtain calcium phosphate coated iron oxide yellow pigment filter cake, 4) dispersing the calcium phosphate coated iron oxide yellow pigment filter cake and sodium stearate in water, heating to 50-90°0, stirring for 05-5h, and drying and crushing the filter cake at 50-105°C after pressure filtering and washing to chbtain the heat-resistant easily dispersible iron oxide yellow pigment product The preparation method of a kind of heat-resisiant easily dispersible iron oxide yellow pigment is characterized in that the mass ratio of iron oxide yellow to costed calcium phosphate is 1.1100 1.
The preparation method of a kind of heat-resistant easily dispersible iron oxide yellow pigment is characterized in that the calcium sait is one or more of nitrate or chioride.
The preparation method of a kind of heat-resistant easily disparsible ron oxide yellow pigment is characterized in that the molar ratio of calcium salt, sodium hexametaphosphats and sodium hydroxide is 1:1:1-13, The preparation method of a kind of heat-resistant easily dispersible iron oxide yellow pigment is characterized in that the mass ratio of calcium phosphate costed iron oxide veilow pigment filter cake to sodium stearate is 100: 1-10: According to the invention, the surface of the iron oxide yellow costed with calcium phosphate is modified by sodium stearate, and the obtained composite material improves the heat resistance and dispersioility of the iron oxide yellow, and can be used as a coloring agent in plastic processing and powder coating application. The coated iron oxide veto 799 synthesized by the invention makes the calcium phosphate coating more complete due to the introduction of uitrasonic dispersion technology in the coating process, organic surface modification makes the product have the advantages of good heat resistance and dispersion, simple synthasis method, low cost, safety, environmental protection and the like, and has high industrial application value, Description of the present invention This specific embodiment is only an explanation of the present invention, and tis not a imitation of the present invention, After reading this specification, the skilled person in the field can make ne innovative modifications to this embodiment as needed, but if is protected by the patent law as long as it is within the scope of the present invention.
Embodiment 1 Weigh 10KG of iron oxide yellow pigment 810# and evenly disperse iron oxide yellow in 2001 of water under stirring to form a mixed solution with 5% ron oxide yellow content Weigh S54Kg of calcium nitrate, 2.4Kg of sodium hydroxide and 6.12Kg of sodium hexametaphosphate respectively, and dissolve them in 30L of water to prepare solution A, solution B and solution ©; next, add solution À, solution 5 and solution © simulfaneously into the mixed solution of iron oxide yellow with stirring, and carry out ultrasonic dispersion, control the reaction temperature to be at 70°C, and continue stirring for 10h after the solution is added, Filter-press and wash to obtain calcium phosphate costed iron oxide yellow pigment filler cake, Then, disperse calcium phosphais coated iron oxide yellow pigment filter cake and sodium stearate (Ihe mass ratio of the two is 1001) in water, heat it to 70°C, stir for reaction for 2h, and the filler cake is dried and crushed at 85°C after pressure filtration and washing, to obtain heat-resistant easily dispersible ron oxide yellow pigment product À Embodiment 2 Weigh Z0Kg of ron oxide yellow pigment 8108, and evenly disperse iron oxide yellow in 200L water under stirring to form a mixed solution with 10% iron oxide yellow content; Weigh 2.22Kg calcium chioride, 0.8Kg sodium hydroxide and 2.04Kg sodium hexamelaphosphale respectively, and dissolve them in 100L water to wrepars solution À,
solution B and solution ©; add solution À, solution B and solution © simultanecusly int 81795 mixed solution of tron oxide yellow with stirring, and carry out ultrasonic dispersion, control the reaction temperature io be ai 70°C, and continue string for 3h after the solution is added; fiter-press and wash to obtain calcium phosphate coated iron oxide yellow pigment filter cake, next, disperse calcium phosphate coated iron oxide yellow pigment filter cake and sodium stearate {the mass ratio of the two is 50:1) in water, heat i to 80°C, stir for reaction for 3 hours, and the filter cake is dried and crushed at 85°C after pressure filtration and washing Io obtain heat-resisiant easily dispersible iron oxide yellow pigment product 5.
Embodiment 3 Weigh 30Kg of ron oxide yellow pigment 810%, and evenly disperse the won oxide yellow in 100L water under stirring to form a mixed solution with 30% won oxide yellow content, Weigh 2.22Ka calcium chloride, 0 88Kg sodium hydroxide and 2.CG4Kg sodium hexametaphosphate respectively, and dissolve them in SOL water to prepare solution À solution B and solution C; add solution A, solution B and solution C simullansously into the mixed solution of iron oxide yellow with stirring, and carry out ulfrasonic dispersion, control the reaction temperature to be at 50°C, and continue stirming for 18h after the solution is added, fiter-press and wash to obtain calcium phosphate coated Iron oxide yellow pigment filter cake, then, disperse Calcium phosphate coated won oxide yellow pigment filter cake and sodium sisarate (the mass ratio of the two is 20:1) in water, heat if to 80, stir for reaction for 1 hour, and the filter cake is dried and crushed at 85°C after pressure filtration and washing to obtain heat-resistant easily dispersible iron oxide yellow pigment product ©.
Heat resistance test: weigh 2.50 of the product, put i into a small crucible, heat it in an oven at 280°C for 0.50, take it out for cooling, and then test the color difference AE of the product before and after baking on a spectrophotometer. The AE of heat-resistant easily dispersible iron oxide yellow product À heat-resistant easily dispersible iron oxide yellow product B and heat-resistant easily dispersible iron oxide yellow product © are 2.46, 1.82 and 2.37 respectively.
Oi absorption test according to "GB/T1863-2008 Standard Compilation of Coatings and Pigments”, the oil absorption of coated ron oxide yellow pigment was tested, The oil absorption of heat-resistant easily dispersible Iron oxide yellow product A, heat-resistant sasily dispersible iron oxide yellow product B and heat-resistant easily dispersible Hon 179 oxide yellow product © were 28 5a/100g, 24 2g/100g, 20. 69/1009, respectively.
The test shows that the calcium phosphate coated iron oxide yellow product with ultrasonic dispersion technology and surface modification with sodium stearate has excellent heat resistance and easy dispersion, and can be used as a colorant for plastic Processing and powder coating at 26000
Claims (5)
- Claims LU5017951. The preparation method of a kind of heat-resistant easily dispersible iron oxide yellow pigment comprises the following steps. 1) dispersing iron oxide yellow raw material in water under stirring to form ron oxide yellow mixed solution; 2) dissolving soluble calcium sait in water to prepare solution À, dissolving sodium hydroxide in water to prepare solution B and dissolving sodium hexametaphosphate in water to prepare solution C; 3) the solution À, the solution B and the solution © are simultansousiy added into the mixed solution of iron oxide yellow with stirring, and ultrasonic dispersion is carried oul, the reaction temperature is controlled at 50-20°C, and stirring is continued for 0.5-20 hours after the solution is added; filter pressing and washing to obtain calcium phosphate coated iron oxide yellow pigment filter cake 4) dispersing the calcium phosphate costed won oxide veilow pigment filter cake and sodium stearate in water, heating to 50-80°C, stirring for0.5-5h, and drying and crushing the filter cake at SD-10S°C after pressure filtering and washing io obtain the heat-resistant easily dispersible iron oxide yellow pigment product.à The preparation method of a kind of heat-resistant sasily dispersible iron oxide yellow pigment, according to claim |, is characterized in that the mass ratio of iron oxide yellow to coated calcium phosphate is 11-1000 1.3. The preparation method of a kind of hestresistant easily dispersible iron ode yellow pigment, according to claim 1, is characterized in that the calcium sait is ong Or mors of nitrate or chloride,4. The preparation method of a kind of heat-resistant easily dispersible iron oxide yellow pigment, according to claim 1, is characterized in that the molar ratio of calcium sait, sodium hexametaphosphate and sodium hydroxide is 1:1:1-1,3,5. The preparation method of a kind of hest-resistant easily dispersible iron oxide yellow pigment, according to claim 1, is characterized in that the mass ratio of calcium phosphate coated ron oxide yellow pigment filter cake to sodium stearate is 1001-101
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU501795A LU501795B1 (en) | 2022-04-05 | 2022-04-05 | A kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof |
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| LU501795A LU501795B1 (en) | 2022-04-05 | 2022-04-05 | A kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof |
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| LU501795A LU501795B1 (en) | 2022-04-05 | 2022-04-05 | A kind of heat-resistant easily dispersible iron oxide yellow pigment and preparation method thereof |
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2022
- 2022-04-05 LU LU501795A patent/LU501795B1/en active IP Right Grant
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Effective date: 20221005 |