CN111154295A - Environment-friendly green inorganic pigment and preparation method thereof - Google Patents

Environment-friendly green inorganic pigment and preparation method thereof Download PDF

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Publication number
CN111154295A
CN111154295A CN202010043959.9A CN202010043959A CN111154295A CN 111154295 A CN111154295 A CN 111154295A CN 202010043959 A CN202010043959 A CN 202010043959A CN 111154295 A CN111154295 A CN 111154295A
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inorganic pigment
environment
green inorganic
oxide
friendly green
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唐帆
彭健辉
李爱林
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Ji'an Zhongyi Ceramic Chemical Co ltd
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Ji'an Zhongyi Ceramic Chemical Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/36Compounds of titanium
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06Treatment with inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/61Micrometer sized, i.e. from 1-100 micrometer
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/62L* (lightness axis)
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/63Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/64Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)

Abstract

The invention discloses an environment-friendly green inorganic pigment and a preparation method thereof, wherein the green inorganic pigment comprises the following components in parts by weight: cobalt carbonate, nickel carbonate, titanium oxide, zinc oxide; the weight ratio of the components is (24-32) to (45-54) to 40: 13; the firing temperature of the pigment is reduced by adding the cobalt carbonate with high activity, and the nickel carbonate and the zinc oxide are added to adjust the color tone of the product, so that the color development of the pigment is corrected, and the effects of greenness to yellow and greenness to blue are better; the titanium diamond green pigment is prepared by adopting a novel semi-wet semi-solid phase method, the preparation method is simple and efficient, the production cost is low, the material mixing uniformity is high, the particles are fine, the firing temperature is low, and the color tone of the fired finished product is uniform; and the grinding material is ground by a sand mill, so that the ball milling efficiency is greatly improved, and the particle size of the material is smaller and the distribution is more uniform.

Description

Environment-friendly green inorganic pigment and preparation method thereof
Technical Field
The invention relates to the technical field of ceramic inorganic pigments, in particular to an environment-friendly green inorganic pigment and a preparation method thereof.
Background
The titanium diamond green is a good inorganic pigment, has good heat resistance, light resistance, weather resistance and chemical resistance, and is widely applied to the fields of coloring of high-temperature resistant paint, plastics, ceramics, enamel, glass and the like, art pigment and the like. The powder pigment and the preparation process thereof are researched and explored all the time. The existing method for preparing titanium diamond green mainly comprises the following steps: 1. the technological process is simple, and includes solid phase synthesis, and the technological process includes grinding, mixing, high temperature calcination and crushing to required fineness to obtain the product; the titanium diamond green prepared by the solid phase method has poor material mixing uniformity, large raw material particles, higher firing temperature, uneven color tone of the fired finished product and poor coloring power. 2. The wet synthesis is mainly a coprecipitation method, which adopts tetrabutyl titanate/metatitanic acid, cobalt salt, ammonia water/urea, forms a precursor through acid-base titration, and then obtains a finished product through water washing, drying, high-temperature calcination and crushing; the coprecipitation method has the disadvantages of complex process, long production period, high product cost and difficulty in realizing large-scale production, and the washing salt needs to be treated.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an environment-friendly green inorganic pigment, aiming at solving the problems that the existing titanium diamond green has large particles, high firing temperature, uneven color tone of the fired finished product and poor coloring; the preparation process is complex, the production period is long, the production cost is high, and the large-scale production is difficult to realize.
In order to achieve the purpose, the invention adopts the following technical scheme:
an environment-friendly green inorganic pigment, which comprises the following components: cobalt carbonate, nickel carbonate, titanium oxide, zinc oxide; the weight ratio of the components is (24-32) to (45-54) to 40: 13.
In the environment-friendly green inorganic pigment, the content of cobalt oxide in the cobalt carbonate is 60-65%, and the content of nickel oxide in the nickel carbonate is 57-62%; the green inorganic pigment comprises the following components in percentage: 15 to 20 percent of cobalt oxide, 27 to 32 percent of nickel oxide, 40 percent of titanium oxide and 13 percent of zinc oxide.
In the environment-friendly green inorganic pigment, the inorganic pigment comprises water, and the weight ratio of the water to the solid is 1: 2-2.5.
In the environment-friendly green inorganic pigment, the titanium oxide is anatase titanium oxide, and the purity of the titanium oxide is 99.5%.
A preparation method of an environment-friendly green inorganic pigment comprises the following steps:
s1, weighing cobalt carbonate, nickel carbonate, titanium oxide and zinc oxide, adding into water, and stirring for 5-20 minutes to obtain a mixture;
s2, adding the mixture obtained in the step S1 into a sand mill, and sanding;
s3, drying the material after suction filtration, pulverizing the material by a pulverizer, and calcining;
and S4, crushing, sanding, filtering and drying the material calcined and cooled in the step S3 to obtain a finished product.
In the preparation method of the environment-friendly green inorganic pigment, the particle size of zirconium beads of the sand mill in the step S2 is 0.8-1.0 μm; the fineness of the material after sanding in the step S2 is D903~4μm。
In the preparation method of the environment-friendly green inorganic pigment, the drying temperature in the step S3 is 95-105 ℃; the calcination condition is that the temperature is raised to 950-1000 ℃ for 2-4 h and the calcination is carried out for 2-4 h.
In the preparation method of the environment-friendly green inorganic pigment, the fineness of the finished product in the step S4 is D902~3μm。
In the preparation method of the environment-friendly green inorganic pigment, the step S4 of drying further comprises passing through a 200-300-mesh screen.
Has the advantages that:
the invention provides an environment-friendly green inorganic pigment and a preparation method thereof, wherein the firing temperature of the pigment is reduced by adding cobalt carbonate with high activity, and the nickel carbonate and zinc oxide are added to adjust the color tone of the product, so that the color development of the pigment is corrected, and the effects of greenness to yellow and blueness to blue are better; the titanium diamond green pigment is prepared by adopting a novel semi-wet semi-solid phase method, the preparation method is simple and efficient, the production cost is low, the material mixing uniformity is high, the particles are fine, the firing temperature is low, and the color tone of the fired finished product is uniform; and the grinding material is ground by a sand mill, so that the ball milling efficiency is greatly improved, and the particle size of the material is smaller and the distribution is more uniform.
Drawings
FIG. 1 is a color difference comparison graph of a cobalt green pigment primary color paste in the prior art and a green inorganic pigment primary color paste of the embodiments 1 and 2 of the present invention.
FIG. 2 is a comparison graph of color differences between cobalt green pigment flush color paste in the prior art and green inorganic pigment flush color paste of examples 1 and 2 of the present invention.
Detailed Description
The invention provides an environment-friendly green inorganic pigment and a preparation method thereof, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an environment-friendly green inorganic pigment which comprises the following components in parts by weight: cobalt carbonate, nickel carbonate, titanium oxide, zinc oxide; the weight ratio of the components is (24-32) to (45-54) to 40: 13. The cobalt carbonate which is easily decomposed at high temperature is added, the activity is higher, the cobalt carbonate plays a role of a fusing agent, the generation of a solid phase is promoted at a lower temperature, the solid phase reaction is promoted, and the reaction temperature, namely the firing temperature of the pigment is reduced; forming solid solution, activating the crystal lattice of the reactant, promoting the formation of crystal center and accelerating the growth of crystal; the nickel carbonate and the zinc oxide are added to adjust the color tone of the product, and the components and the proportion of the green inorganic pigment are most appropriate, so that the structure of the pigment is stable, the color development of the pigment is corrected, and the effects of greenness, yellowness and blueness are better.
Further, the content of cobalt oxide in the cobalt carbonate is 60-65%, and the content of nickel oxide in the nickel carbonate is 57-62%; the green inorganic pigment comprises the following components in percentage: 15 to 20 percent of cobalt oxide, 27 to 32 percent of nickel oxide, 40 percent of titanium oxide and 13 percent of zinc oxide. The carbonate is synthesized by adopting decomposable salts instead of directly adopting stable oxides, the activity of the carbonate is higher than that of the directly adopted oxides, the reaction temperature can be reduced, and the content of the oxides in the carbonate is most suitable, thereby being beneficial to forming excellent chromophoric pigments.
Furthermore, the inorganic pigment comprises water, and the weight ratio of the water to the solid is 1: 2-2.5. The content of water affects the difficulty of dissolving solid materials and the fineness of sanding, and excessive water causes the components of inorganic pigments to be excessively dispersed, so that sanding and subsequent drying and suction filtration are not facilitated; too little water, high viscosity of the mixture, increased collision between materials, increased stress, easy damage to the structure, and unfavorable sand grinding into proper fineness.
Specifically, the titanium oxide is anatase titanium oxide, and the purity of the titanium oxide is 99.5%. The titanium oxide has the advantages of no toxicity, optimal opacity, optimal whiteness and brightness, strong adhesion, strong tinting strength, stable chemical property, difficult chemical change and difficult color change, and the titanium oxide has large surface area and is beneficial to the reaction between materials. The anatase titanium oxide has larger lattice space, is relatively unstable, has poor weather resistance, is easy to yellow and pulverize, but has higher whiteness, can be converted into rutile titanium oxide at high temperature, has compact lattice structure, good stability, small photochemical activity, good durability and weather resistance, higher hardness, covering power and tinting strength, has lower cost than the rutile titanium oxide, and can reduce the production cost.
A preparation method of an environment-friendly green inorganic pigment comprises the following steps: weighing cobalt carbonate, nickel carbonate, titanium oxide and zinc oxide, adding into water, and stirring for 5-20 minutes to obtain a mixture; adding the mixture into a sand mill, wherein the particle diameter of zirconium beads of the sand mill is 0.8-1.0 mu m, and sanding to uniformly mix the materials, wherein the fineness of the sanded materials is D903-4 microns, the fineness is most suitable, and the phenomenon that the pigment structure is damaged by grinding, and the physical and chemical properties of the surface are changed or the pigment is too coarse to be beneficial to dispersion of materials is avoided; performing suction filtration treatment by using a suction filtration machine, directly draining, washing without water, drying the materials in a drying box at the temperature of 95-105 ℃, pulverizing the materials by using a pulverizer, and performing suction filtration treatment in a muffle furnace or an electric furnace at the temperature of 950-1000 DEG CCalcining for 2-4 h, heating to the calcining temperature, and then carrying out calcining treatment under the condition of keeping the temperature for 2-4 h; crushing, sanding, filtering, drying the calcined and cooled material, sieving with a 200-300 mesh sieve to remove impurities, and dispersing the dried blocky semi-finished product to obtain a finished product with the fineness of D902-3 mu m, adopts secondary sanding, can improve the material mixing uniformity, guarantees the holistic refinement of pigment, the finished product of fineness is favorable to reducing its firing temperature, makes the finished product tone degree of consistency that burns out high, and the tinctorial strength is strong. Compared with the pigment prepared by the traditional solid phase method, the green inorganic pigment prepared by the semi-wet semi-solid phase method has the advantages of uniform material mixing, small raw material particles, low firing temperature, uniform color tone of the fired finished product and good coloring effect; compared with a coprecipitation method, the preparation process is simple, the production period is short, water washing treatment is not needed, and the production cost is reduced.
Specifically, the powder is ground by using the powder grinding machine, so that the particle size of material particles is smaller, a new surface is generated, the specific surface area of the material particles is increased, the reaction activation energy is reduced, the mutual reaction between the materials is facilitated, the reaction temperature can be reduced, and the energy-saving and environment-friendly effects are achieved.
Further, the drying conditions are sufficient to remove moisture from the mixture; the calcining condition ensures that the reaction is more sufficient, the formed crystal structure is stable, more cobalt ions and nickel ions enter crystal lattices, the purity of the pigment is improved, and the color development is more exquisite.
Example 1
The environment-friendly green inorganic pigment comprises the following components in parts by weight: 23.88 parts of cobalt carbonate, 53.96 parts of nickel carbonate, 40 parts of titanium oxide and 13 parts of zinc oxide; the content of cobalt oxide in the cobalt carbonate is 62.8%, and the content of nickel oxide in the nickel carbonate is 59.3%; the green inorganic pigment comprises the following components in percentage: 15% of cobalt oxide, 32% of nickel oxide, 40% of titanium oxide and 13% of zinc oxide; the weight ratio of water to solids is 1: 2.
A preparation method of an environment-friendly green inorganic pigment comprises the following steps:
① weighing cobalt carbonate, nickel carbonate, titanium oxide and zinc oxide according to the above weight, adding into water, and stirring for 20 minutes;
② adding the mixture into a sand mill, sanding the mixture until the particle size of zirconium beads is 0.8-1.0 μm, and detecting the fineness of the material every 5 minutes until the fineness of the material reaches 3-4 μm.
③ suction filtration by a suction filtration machine, directly drying without washing, drying the materials in a drying oven at 100 ℃, pulverizing the materials by a pulverizer, calcining at 960-980 ℃ in a muffle furnace for 3h, and carrying out calcination treatment under the condition of keeping the temperature for 2h after heating to the calcination temperature.
④ pulverizing, sanding, vacuum filtering, oven drying, and sieving with 200 mesh sieve to obtain final product with fineness D902~3μm。
Example 2
The environment-friendly green inorganic pigment comprises the following components in parts by weight: 31.84 parts of cobalt carbonate, 45.53 parts of nickel carbonate, 40 parts of titanium oxide and 13 parts of zinc oxide; the content of cobalt oxide in the cobalt carbonate is 62.8%, and the content of nickel oxide in the nickel carbonate is 59.3%; the green inorganic pigment comprises the following components in percentage: 20% of cobalt oxide, 27% of nickel oxide, 40% of titanium oxide and 13% of zinc oxide; the weight ratio of water to solids was 1: 2.5.
A preparation method of an environment-friendly green inorganic pigment comprises the following steps:
① weighing cobalt carbonate, nickel carbonate, titanium oxide and zinc oxide according to the above weight, adding into water, and stirring for 10 minutes;
② adding the mixture into a sand mill, sanding the mixture until the particle size of zirconium beads is 0.8-1.0 μm, and detecting the fineness of the material every 5 minutes until the fineness of the material reaches 3-4 μm.
③ suction filtration by a suction filtration machine, directly drying without washing, drying the materials in a drying box at 105 ℃, pulverizing the materials by a pulverizer, calcining at 950-960 ℃ in a muffle furnace for 2h, and keeping the temperature for 4h after heating to the calcining temperature.
④ pulverizing, sanding, vacuum filtering, oven drying, and sieving with 250 mesh sieve to obtain final product with fineness D902~3μm。
Example 3
The environment-friendly green inorganic pigment comprises the following components in parts by weight: 28.33 parts of cobalt carbonate, 49.67 parts of nickel carbonate, 40 parts of titanium oxide and 13 parts of zinc oxide; the content of cobalt oxide in the cobalt carbonate is 62.8%, and the content of nickel oxide in the nickel carbonate is 59.3%; the green inorganic pigment comprises the following components in percentage: 17% of cobalt oxide, 29% of nickel oxide, 40% of titanium oxide and 13% of zinc oxide; the weight ratio of water to solids was 1: 2.3.
A preparation method of an environment-friendly green inorganic pigment comprises the following steps:
① weighing cobalt carbonate, nickel carbonate, titanium oxide and zinc oxide according to the above weight, adding into water, and stirring for 5 minutes;
② adding the mixture into a sand mill, sanding the mixture until the particle size of zirconium beads is 0.8-1.0 μm, and detecting the fineness of the material every 5 minutes until the fineness of the material reaches 3-4 μm.
③ suction filtration by a suction filtration machine, directly drying without washing, then drying the materials in a drying oven at the temperature of 95 ℃, powdering the materials by a powdering machine, calcining at 980-1000 ℃ in an electric furnace, heating for 4h, and carrying out calcination treatment under the condition of keeping the temperature for 3h after heating to the calcination temperature.
④ pulverizing, sanding, vacuum filtering, oven drying, and sieving with 300 mesh sieve to obtain final product with fineness D902~3μm。
As a comparative example, a commercially available ordinary cobalt green pigment was used.
Detection of color development in paints
① grinding base material is prepared by weighing 250g alkyd resin, 100g 200# solvent, 8g dispersant (106) and 1g drier, mixing and shaking;
② preparing white slurry, namely, 60g of base material, 60g of titanium pigment and 100g of zirconium beads, quickly grinding the mixture in a 200mL plastic tank for 30 minutes, and sieving and pouring out the mixture;
③ grinding of color paste:
primary color: 20g of base material, the green inorganic pigment of the invention: 5g of zirconium beads and 80g of zirconium beads are quickly ground in a 100mL plastic tank for 30 minutes;
and (3) fading: 1g of the primary color paste and 2g of the white paste are uniformly stirred;
④ color scraping card comprises preparing primary color paste and dilute color paste, scraping black and white color cards respectively, baking at 120 deg.C for 30 min, and detecting with color difference meter.
The result of the detection
As in the following table:
paint color detection L a b
Comparative example 45.40 -44.69 24.55
Example 1 44.83 -45.55 25.40
Example 2 44.90 -45.89 25.90
Example 3 44.85 -45.70 25.66
Paint fade detection L a b
Comparative example 73.65 -24.69 7.53
Example 1 71.91 -26.25 8.19
Example 2 71.78 -26.26 8.14
Example 3 71.88 -26.27 8.13
Analysis of results
Wherein △ L + represents white, △ L-represents black, △ a + represents red, △ a-represents green, △ b + represents yellow and △ b-represents blue, the brightness of the cobalt green is darker and the color of the cobalt green is darker and darker in examples 1-3, the color of the cobalt green is greener as the value of a is more negative, namely, the color of the cobalt green is greener as the value of a is more positive, and the color of the cobalt green is more yellow as the value of b is more positive, namely, the color of the cobalt green is yellowish as the values of examples 1-3 are more yellow than that of the cobalt green in the market, as shown in FIG. 1 (the primary color paste of the primary color of the comparative example 1, the primary color paste of the comparative example 2 and FIG. 2 (the primary color paste of the comparative example 1, the primary color paste of the comparative example 2 and the pigment paste of the comparative example 2 are sequentially arranged from left to right), the surface color development effect of the primary color is better.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims (9)

1. The environment-friendly green inorganic pigment is characterized by comprising the following components: cobalt carbonate, nickel carbonate, titanium oxide, zinc oxide; the weight ratio of the components is (24-32) to (45-54) to 40: 13.
2. The environment-friendly green inorganic pigment according to claim 1, wherein the cobalt carbonate contains 60 to 65% of cobalt oxide, and the nickel carbonate contains 57 to 62% of nickel oxide; the green inorganic pigment comprises the following components in percentage: 15 to 20 percent of cobalt oxide, 27 to 32 percent of nickel oxide, 40 percent of titanium oxide and 13 percent of zinc oxide.
3. The environment-friendly green inorganic pigment of claim 1, wherein the inorganic pigment comprises water, and the weight ratio of the water to the solid is 1: 2-2.5.
4. The environment-friendly green inorganic pigment according to claim 1, wherein the titanium oxide is anatase-type titanium oxide and has a purity of 99.5%.
5. A preparation method of an environment-friendly green inorganic pigment comprises the following steps:
s1, weighing cobalt carbonate, nickel carbonate, titanium oxide and zinc oxide, adding into water, and stirring for 5-20 minutes to obtain a mixture;
s2, adding the mixture obtained in the step S1 into a sand mill, and sanding;
s3, drying the material after suction filtration, pulverizing the material by a pulverizer, and calcining;
and S4, crushing, sanding, filtering and drying the material calcined and cooled in the step S3 to obtain a finished product.
6. The method for preparing an environment-friendly green inorganic pigment according to claim 5, wherein the particle size of the zirconium beads of the sand mill in the step S2 is 0.8 to 1.0 μm; the fineness of the material after sanding in the step S2 is D903~4μm。
7. The method for preparing environment-friendly green inorganic pigment according to claim 5, wherein the drying temperature in the step S3 is 95-105 ℃; the calcination condition is that the temperature is raised to 950-1000 ℃ for 2-4 h and the calcination is carried out for 2-4 h.
8. The method for preparing environment-friendly green inorganic pigment according to claim 5, wherein the fineness of the final product in the step S4 is D902~3μm。
9. The method for preparing environment-friendly green inorganic pigment according to claim 5, wherein the step S4 of drying further comprises sieving with a 200-300 mesh sieve.
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CN112126250A (en) * 2020-09-24 2020-12-25 中国科学院包头稀土研发中心 Cobalt-chromium-free rare earth green pigment, and preparation method and application thereof
CN113149635A (en) * 2021-04-19 2021-07-23 山东海之川新材料有限公司 Environment-friendly inorganic pigment and preparation process thereof

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