CN110003687B - Preparation method of special titanium dioxide for high-gloss outdoor coating - Google Patents

Preparation method of special titanium dioxide for high-gloss outdoor coating Download PDF

Info

Publication number
CN110003687B
CN110003687B CN201910341712.2A CN201910341712A CN110003687B CN 110003687 B CN110003687 B CN 110003687B CN 201910341712 A CN201910341712 A CN 201910341712A CN 110003687 B CN110003687 B CN 110003687B
Authority
CN
China
Prior art keywords
titanium dioxide
slurry
value
solution
homogenizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910341712.2A
Other languages
Chinese (zh)
Other versions
CN110003687A (en
Inventor
陈建立
张健
叶新友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Longbai Group Co ltd
Original Assignee
Lomon Billions Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lomon Billions Group Co ltd filed Critical Lomon Billions Group Co ltd
Priority to CN201910341712.2A priority Critical patent/CN110003687B/en
Publication of CN110003687A publication Critical patent/CN110003687A/en
Application granted granted Critical
Publication of CN110003687B publication Critical patent/CN110003687B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3615—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C09C1/3623—Grinding
    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3653—Treatment with inorganic compounds
    • C09C1/3661—Coating
    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3669—Treatment with low-molecular organic compounds
    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3676—Treatment with macro-molecular organic compounds
    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3692—Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684
    • 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
    • C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
    • 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
    • C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C09C3/041—Grinding
    • 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
    • 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
    • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
    • 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
    • C09C3/10—Treatment with macromolecular organic compounds

Abstract

The invention discloses a preparation method of special titanium dioxide for high-gloss outdoor paint, which comprises the steps of crushing uncoated titanium dioxide, wet grinding, adding a dispersing agent, and sanding to obtain sanding slurry; diluting the sand grinding slurry, adding high molecular polymer, and performing ultrasonic treatment and stirring; and then, after coating, washing, drying and steam powdering to obtain the special titanium dioxide for the high-gloss outdoor coating. According to the invention, a special surface treatment process is adopted for titanium dioxide particles, and a proper amount of polymer chains are added into inorganic coated slurry, so that the titanium dioxide particles are not easy to agglomerate, the singleness of the titanium dioxide particles is enhanced, and the dispersibility of the slurry is improved, thereby improving the glossiness; after a special polymer chain is added on the surface of the titanium dioxide, the coating of oxides is facilitated, the uniformity and the integrity of the coating are optimized, the glossiness of the product is improved, and the formula applicability of the product is improved.

Description

Preparation method of special titanium dioxide for high-gloss outdoor coating
Technical Field
The invention relates to the field of titanium dioxide preparation, belongs to a material preparation system, and particularly relates to a preparation method of special titanium dioxide for high-gloss outdoor paint.
Background
Titanium dioxide is a very important white pigment and is widely applied to the industries of paint, plastics, papermaking, printing ink and the like. Therefore, the application index of the titanium dioxide is extremely important.
The glossiness of an object refers to the reflection capability of a substance for projected light, and the stronger the reflection capability, the greater the glossiness. In practical application, the pigment is only one of the paint groups, the pigment does not have luster, and the coating film is glossy, but the influence of the characteristics of the pigment in practical production determines the luster of the coating film, the appearance of the pigment determines the property of the pigment, which is an uncritical fact, the integral and uniform appearance of the pigment is an important aspect for improving the glossiness of the product, the main reasons for influencing the glossiness of the titanium dioxide pigment after film forming also comprise the particle size, inorganic treatment and dispersibility, under the same condition of the inorganic coating treatment, the improvement of the single property of the particles can improve the dispersibility of the titanium dioxide powder of the product, and the improvement of the glossiness of the product is not vice versa. At present, the conditions of incomplete coating caused by uneven particle dispersion and gloss deviation caused by particle agglomeration of titanium dioxide become an important aspect influencing the gloss of paint, the use of the paint titanium dioxide in a wider range is limited, and a method for improving the gloss of the titanium dioxide is urgently needed to provide aiming at the condition, so that the application of the titanium dioxide is wider.
Disclosure of Invention
The invention aims to overcome the defects and provide a preparation method of special titanium dioxide for high-gloss outdoor paint.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
a preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps,
s1, crushing and wet-grinding uncoated titanium dioxide, and adding a dispersing agent accounting for 0.05-1 wt% of the total weight of the titanium dioxide for sanding to obtain sanding slurry; diluting the sand grinding slurry, adding a high molecular polymer accounting for 0.1-10 wt% of the total weight of the titanium dioxide, and performing high molecular chain modification on titanium dioxide particles; then carrying out ultrasonic treatment and stirring;
s2, coating, namely performing inorganic coating treatment on the slurry obtained in the step S1 to obtain coated slurry;
and S3, washing, drying and steam-pulverizing the coated slurry obtained in the step S2 to obtain the special titanium dioxide for the high-gloss outdoor coating.
Preferably, the high molecular polymer is a water-soluble high molecular polymer; the water-soluble high molecular polymer is one of polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, polyquaternary ammonium salt and polyethylene glycol.
Preferably, the dispersing agent comprises one or more of silicate solution, phosphate solution, sodium polycarboxylate, ammonium polycarboxylate, alkyl sulfonate, salt of fatty amine, fatty alcohol-polyoxyethylene ether, amino acid and beet derivative.
Preferably, an organic surface treatment agent is added in one of the three processes of water washing, drying and steam powder in the step S3; the organic surface treating agent is one or more of polyalcohol or organic silicon; the added organic surface treating agent accounts for TiO calculated as solute20.01 to 1wt% of the total amount.
Preferably, the preparation method of the special titanium dioxide for the high-gloss outdoor coating comprises the following steps:
s1, crushing and wet-grinding the uncoated titanium dioxide; after wet grinding, adding a dispersing agent accounting for 0.05-1 wt% of the total weight of the titanium dioxide, and then sanding to obtain sanding slurry; diluting the sanding slurry to the concentration of 200-400 g/L and the pH value of 7-11; then adding a high molecular polymer accounting for 0.1-10 wt% of the total weight of the titanium dioxide, and performing high molecular chain modification on titanium dioxide particles; stirring and ultrasonic treatment are started at the temperature of 50-90 ℃, and the ultrasonic treatment is started for 10-30 min and then is closed;
s2, coating film
S2.1, adjusting the pH value of the slurry obtained in the step S1 to 8-11 by using dilute alkali, adjusting the pH value for 5-15 min, and homogenizing for 10-15 min;
s2.2, adding a defined amount of silicate Solution (SiO) into the slurry obtained in step S2.1 for a defined period of time2Metering), stirring and homogenizing for 15-40 min;
s2.3, adjusting the pH value of the slurry obtained in the step S2.2 to 5-7 by using dilute acid, adjusting the pH value for 10-15 min, and homogenizing for 20-40 min;
s2.4, adding a quantitative zirconium salt solution and a diluted alkali liquor into the slurry obtained in the step S2.3 at a constant speed according to a specified time in a parallel flow mode, controlling the pH value to be 5-7, and homogenizing for 20-40 min;
s2.5, adjusting the pH value of the slurry obtained in the step S2.4 to 7-9 by using dilute alkali according to a specified time, adding the slurry for stirring and homogenizing for 30-80 min;
s2.6, adding a sodium hexametaphosphate solution into the slurry obtained in the step S2.5 according to a set time, and stirring and homogenizing for 15-25 min;
s2.7, adding quantitative aluminum salt solution and dilute acid into the slurry obtained in the step S2.6 at a constant speed in a parallel flow mode according to a set time, controlling the pH value to be 7-9, and homogenizing for 20-40 min;
s2.8, adjusting the pH value of the slurry obtained in the step S2.7 to a required value by using dilute acid, keeping the pH value stable and unchanged, homogenizing for 30-120 min, and finishing coating;
s3, washing, drying and steaming the slurry obtained in the step S2.8; and adding the metered organic surface treating agent into the steam powder to finally obtain the special titanium dioxide for the high-gloss outdoor coating.
Preferably, the particle size of the uncoated titanium dioxide in the step S1 is 0.250-0.350 μm; the added dispersing agent is sodium hexametaphosphate, and the addition amount of the sodium hexametaphosphate is 0.05-1 wt% of the total amount of the titanium dioxide.
Preferably, the dilute alkali solution in the steps S2.1, S2.4 and S2.5 is dilute NaOH or ammonia water solution with the concentration of 190-300 g/L; the dilute acid solution in the steps S2.3, S2.7 and S2.8 is dilute sulfuric acid, dilute hydrochloric acid or dilute phosphoric acid with the concentration of 140-160 g/L.
Preferably, the silicate solution in step S2.2 is NaSiO3The solution with the concentration of 100-280 g/L accounts for TiO20.01-1 wt% of the total amount; step S2.4 the zirconium salt solution is ZrOCl2Solution or ZrSO4(with ZrO)2Calculated) in TiO20.01 to 1.5wt% of the total amount.
Preferably, the concentration of the sodium hexametaphosphate solution in the step S2.6 is 80-120 g/L, which accounts for TiO20.01 to 0.5% of the total amount.
Preferably, Al is used2O3The aluminum salt solution in the step S2.7 is NaAlO with the concentration of 150-170 g/L2Solution or 85-110 g/L Al2(SO4)3Solution and Al in aluminum salt2O3Is TiO 221-3 wt% of the total amount.
The invention has the following function principle:
in the method, a special surface treatment process is adopted for titanium dioxide particles, and after a proper amount of macromolecular chains (polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, polyquaternary ammonium salt and polyethylene glycol) are added into slurry of an inorganic coating, the titanium dioxide particles are not easy to agglomerate, the unicity of the titanium dioxide particles is enhanced, the dispersibility of the slurry is improved, and the glossiness is improved. After a special polymer chain is added on the surface of the titanium dioxide, the coating of oxides is facilitated, the uniformity and the integrity of the coating are optimized, the glossiness of the product is improved, and the formula applicability of the product is improved.
If phosphate radical is added in the preparation process of the titanium dioxide, the phosphate radical is combined with examples such as aluminum, silicon and the like to form an aluminum phosphate film or a silicon phosphate film, photochemical points on the surface of the titanium dioxide are plugged, the photochemical activity of the titanium dioxide is reduced, the weather resistance of the titanium dioxide is improved under the condition of ensuring the integrity and high dispersion of the coating, and the use performance of the titanium dioxide is enhanced.
According to the Si/Zr/Al coating, phosphate is selected as a dispersing agent, so that coated slurry can be well dispersed under a neutral or weakly alkaline condition, the slurry is more sufficiently ground, and fine and uniform titanium dioxide particles are finally obtained; on the other hand, P2O5The titanium dioxide is deposited on the surface of titanium dioxide particles in the form of titanium phosphate, the dispersibility, light resistance and glossiness of the titanium dioxide can be effectively improved through the deposition in the form of titanium phosphate, aluminum phosphate can be formed in free phosphate radicals, and the integrity of a coating is further enhanced.
Compared with the prior art, the invention has the beneficial effects that:
according to the preparation method of the high-gloss outdoor special titanium dioxide, a special surface treatment process is adopted for titanium dioxide particles, and a proper amount of polymer chains are added into inorganic coated slurry, so that the titanium dioxide particles are not easy to agglomerate, the unicity of the titanium dioxide particles is enhanced, the dispersibility of the slurry is improved, and the glossiness is improved; after a special polymer chain is added on the surface of the titanium dioxide, the coating of oxides is facilitated, the uniformity and the integrity of a coating are optimized, the glossiness of a product is improved, and the formula applicability of the product is improved; the titanium dioxide prepared by the invention has fine and uniform particles, high glossiness, high dispersibility, high weather resistance and formula applicability.
Drawings
FIG. 1 is a weather resistance test chart of titanium dioxide A and high-gloss titanium dioxides B to G obtained in the embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The titanium dioxide A is general outdoor titanium dioxide.
Example 1
A preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps:
s1, grinding, wet grinding and sanding the uncoated titanium dioxide (0.05 wt% of sodium hexametaphosphate is added into the slurry before sanding as a dispersing agent), diluting, wherein the concentration of the slurry is 200g/L, and the pH value of the slurry is 7; modifying titanium dioxide particles by using macromolecular chain PVP, adding 1wt% of high molecular polymer into slurry, keeping the temperature at 50 ℃, starting stirring and ultrasonic, and stopping after the ultrasonic is started for 10 min.
S2, adjusting the pH value of the slurry to 10 by using dilute alkali, adjusting the pH value for 15min, and homogenizing for 15 min. Adding 0.3wt% of Na into the slurry2SiO3The solution was stirred and homogenized for 40 min. Adjusting pH of the slurry to 6 with dilute sulfuric acid, adjusting for 15min, and homogenizing for 20 min. And (3) adding a 0.5wt% ZrOCl2 solution and NaOH into the slurry at a constant speed for 60min in a cocurrent manner, controlling the pH value to be 6.5, and homogenizing for 20 min. The pH of the slurry is adjusted to 7 by dilute NaOH, and the slurry is added for stirring and homogenizing for 30 min. Adding sodium hexametaphosphate into the slurry according to the specified time, and stirring and homogenizing for 15 min. 2wt% NaAlO is added into the slurry at a constant speed for 60min2And dilute sulfuric acid, controlling the pH value at 7.5, and homogenizing for 20 min. Adjusting the pH value of the slurry to a required value by using dilute sulfuric acid, keeping the pH value stable and unchanged, homogenizing for 30min, and finishing the coating.
And S3, washing the slurry with water, drying and steaming the slurry. Adding 0.4wt% of organic surface treating agent during steam powdering to finally obtain the required high-gloss titanium dioxide B.
Example 2
A preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps:
s1, grinding, wet grinding and sanding (1 wt% of sodium hexametaphosphate is added into the slurry before sanding as a dispersing agent) the uncoated titanium dioxide, diluting to obtain slurry with the concentration of 200g/L and the pH value of 7; modifying titanium dioxide particles by using macromolecular chain PVP, adding 1wt% of high molecular polymer into slurry, keeping the temperature at 50 ℃, starting stirring and ultrasonic, and stopping after the ultrasonic is started for 10 min.
S2, adjusting the pH value of the slurry to 10 by using dilute alkali, adjusting the pH value for 15min, and homogenizing for 15 min. Adding 0.3wt% of Na into the slurry2SiO3The solution was stirred and homogenized for 40 min. Adjusting pH of the slurry to 6 with dilute sulfuric acid, adjusting for 15min, and homogenizing for 20 min. Adding 0.5wt% ZrOCl into the slurry at a constant speed for 60min in a parallel flow manner2The solution and NaOH, controlling the pH value at 6.5, and homogenizing for 20 min. The pH of the slurry is adjusted to 7 by dilute NaOH, and the slurry is added for stirring and homogenizing for 30 min. Adding sodium hexametaphosphate into the slurry according to the specified time, and stirring and homogenizing for 15 min. 2wt% NaAlO is added into the slurry at a constant speed for 60min2And dilute sulfuric acid, controlling the pH value at 7.5, and homogenizing for 20 min. Adjusting the pH value of the slurry to a required value by using dilute sulfuric acid, keeping the pH value stable and unchanged, homogenizing for 30min, and finishing the coating.
And S3, washing the slurry with water, drying and steaming the slurry. Adding 0.4wt% of organic surface treating agent during steam powdering to finally obtain the high-gloss titanium dioxide C required by people.
Example 3
A preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps:
s1, grinding, wet grinding and sanding (1% sodium hexametaphosphate is added into the slurry before sanding as a dispersing agent) the uncoated titanium dioxide, diluting, wherein the slurry concentration is 400g/L and the pH value of the slurry is 7; modifying titanium dioxide particles by using macromolecular chain PVP, adding 1wt% of high molecular polymer into slurry, keeping the temperature at 50 ℃, starting stirring and ultrasonic, and stopping after the ultrasonic is started for 10 min.
S2, adjusting the pH value of the slurry to 2 with diluted acid, adjusting the pH value for 15min, and homogenizing for 15 min. Adjusting pH of the slurry to 10 with dilute alkali, adjusting for 15min, and homogenizing for 15 min. Adding 0.3wt% of Na into the slurry2SiO3The solution was stirred and homogenized for 40 min. Adding 0.5wt% ZrOCl into the slurry at a constant speed for 60min in a parallel flow manner2The solution and NaOH, controlling the pH value at 6.5, and homogenizing for 20 min. The pH of the slurry is adjusted to 7 by dilute NaOH, and the slurry is added for stirring and homogenizing for 30 min. Adding sodium hexametaphosphate into the slurry according to the specified time, and stirring and homogenizing for 15 min. 2wt% NaAlO is added into the slurry at a constant speed for 60min2And dilute sulfuric acid, controlling the pH value at 7.5, and homogenizing for 20 min. Adjusting the pH value of the slurry to a required value by using dilute sulfuric acid, keeping the pH value stable and unchanged, homogenizing for 30min, and finishing the coating.
And S3, washing the slurry with water, drying and steaming the slurry. Adding 0.4wt% of organic surface treating agent during steam powdering to finally obtain the high-gloss titanium dioxide D required by people.
Example 4
A preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps:
s1, grinding, wet grinding and sanding (1% sodium hexametaphosphate is added into the slurry before sanding as a dispersing agent) the uncoated titanium dioxide, diluting, wherein the slurry concentration is 200g/L and the pH value of the slurry is 7; modifying titanium dioxide particles by using macromolecular chain PVP, adding 8wt% of high molecular polymer into slurry, keeping the temperature at 50 ℃, starting stirring and ultrasonic, and stopping after the ultrasonic is started for 10 min.
S2, adjusting the pH value of the slurry to 2 with diluted acid, adjusting the pH value for 15min, and homogenizing for 15 min. Adjusting pH of the slurry to 10 with dilute alkali, adjusting for 15min, and homogenizing for 15 min. Adding 0.3wt% of Na into the slurry2SiO3The solution was stirred and homogenized for 40 min. Adding 0.5wt% ZrOCl into the slurry at a constant speed for 60min in a parallel flow manner2The solution and NaOH, controlling the pH value at 6.5, and homogenizing for 20 min. The pH of the slurry is adjusted to 7 by dilute NaOH, and the slurry is added for stirring and homogenizing for 30 min. Adding sodium hexametaphosphate into the slurry according to the specified time, and stirring and homogenizing for 15 min. 2wt% NaAlO is added into the slurry at a constant speed for 60min2And dilute sulfuric acid, controlling the pH value at 7.5, and homogenizing for 20 min. Using dilute sulphuric acid to mix the slurryAdjusting the pH value to a required value, keeping the pH value stable and unchanged, homogenizing for 30min, and finishing the coating.
And S3, washing the slurry with water, drying and steaming the slurry. Adding 0.4wt% of organic surface treating agent during steam powdering to finally obtain the high-gloss titanium white E required by people.
Example 5
A preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps:
s1, grinding, wet grinding and sanding (1% sodium hexametaphosphate is added into the slurry before sanding as a dispersing agent) the uncoated titanium dioxide, diluting, wherein the slurry concentration is 200g/L and the pH value of the slurry is 7; modifying titanium dioxide particles by using macromolecular chain PVP, adding 8wt% of high molecular polymer into slurry, keeping the temperature at 90 ℃, starting stirring and ultrasonic, and stopping after the ultrasonic is started for 10 min.
S2, adjusting the pH value of the slurry to 10 by using dilute alkali, adjusting the pH value for 15min, and homogenizing for 15 min. Adding 0.3wt% of Na into the slurry2SiO3The solution was stirred and homogenized for 40 min. Adjusting pH of the slurry to 6 with dilute sulfuric acid, adjusting for 15min, and homogenizing for 20 min. Adding 0.5wt% ZrOCl into the slurry at a constant speed for 60min in a parallel flow manner2The solution and NaOH, controlling the pH value at 6.5, and homogenizing for 20 min. The pH of the slurry is adjusted to 7 by dilute NaOH, and the slurry is added for stirring and homogenizing for 30 min. Adding sodium hexametaphosphate into the slurry according to the specified time, and stirring and homogenizing for 15 min. 2wt% NaAlO is added into the slurry at a constant speed for 60min2And dilute sulfuric acid, controlling the pH value at 7.5, and homogenizing for 20 min. Adjusting the pH value of the slurry to a required value by using dilute sulfuric acid, keeping the pH value stable and unchanged, homogenizing for 30min, and finishing the coating.
And S3, washing the slurry with water, drying and steaming the slurry. Adding 0.4wt% of organic surface treating agent during steam powdering to finally obtain the high-gloss titanium dioxide F required by people.
Example 6
A preparation method of special titanium dioxide for high-gloss outdoor paint comprises the following steps:
s1, grinding, wet grinding and sanding (1% sodium hexametaphosphate is added into the slurry before sanding as a dispersing agent) the uncoated titanium dioxide, diluting, wherein the slurry concentration is 200g/L and the pH value of the slurry is 7; modifying titanium dioxide particles by using macromolecular chain PVP, adding 8wt% of high molecular polymer into slurry, keeping the temperature at 90 ℃, starting stirring and ultrasonic, and closing after the ultrasonic is started for 30 min.
S2, adjusting the pH value of the slurry to 2 with diluted acid, adjusting the pH value for 15min, and homogenizing for 15 min. Adjusting pH of the slurry to 10 with dilute alkali, adjusting for 15min, and homogenizing for 15 min. Adding 0.3wt% of Na into the slurry2SiO3The solution was stirred and homogenized for 40 min. Adding 0.5wt% ZrOCl into the slurry at a constant speed for 60min in a parallel flow manner2The solution and NaOH, controlling the pH value at 6.5, and homogenizing for 20 min. The pH of the slurry is adjusted to 7 by dilute NaOH, and the slurry is added for stirring and homogenizing for 30 min. Adding sodium hexametaphosphate into the slurry according to the specified time, and stirring and homogenizing for 15 min. Adding 2wt% NaAlO2 and dilute sulfuric acid into the slurry at constant speed for 60min, controlling pH at 7.5, and homogenizing for 20 min. Adjusting the pH value of the slurry to a required value by using dilute sulfuric acid, keeping the pH value stable and unchanged, homogenizing for 30min, and finishing the coating.
And S3, washing the slurry with water, drying and steaming the slurry. Adding 0.4wt% of organic surface treating agent during steam powdering to finally obtain the high-gloss titanium dioxide G required by people.
The titanium dioxide A and the high-gloss titanium dioxides B to G obtained in the examples are sampled and tested in the alcohol acid amino system, and the data are as follows:
Figure 739224DEST_PATH_IMAGE001
the titanium dioxide A and the high-gloss titanium dioxides B to G obtained in the embodiment of the invention are sampled and tested in the application of an acrylic acid-based system, and the data are as follows:
Figure 939261DEST_PATH_IMAGE002
titanium dioxide A and high-gloss titanium dioxide B-G obtained in the embodiment of the invention are sampled to be used as an alkyd amino resin xenon lamp rapid aging experiment, and the data of 60-degree light retention (%) changing along with time are as follows:
Figure 791680DEST_PATH_IMAGE003
as shown in FIG. 1, it is a weather resistance test chart of titanium dioxide A and high gloss titanium dioxides B to G obtained in the embodiment of the present invention. The data analysis can show that the special titanium dioxide for the outdoor coating prepared by the invention has the advantages of fine and uniform particles, low oil absorption, high dispersion, high gloss, excellent weather resistance and formula applicability, and the titanium dioxide prepared by the scheme is particularly suitable for high-end outdoor coatings. The preparation process is simple and easy to implement, the field process flow is convenient to modify, the feasibility is strong, and the application prospect is wide.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims (2)

1. A preparation method of special titanium dioxide for high-gloss outdoor paint is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1, crushing and wet-grinding the uncoated titanium dioxide; after wet grinding, adding a dispersing agent accounting for 0.05-1 wt% of the total weight of the titanium dioxide, and then sanding to obtain sanding slurry; diluting the sanding slurry to the concentration of 200-400 g/L and the pH value of 7-11; then adding a high molecular polymer accounting for 0.1-10 wt% of the total weight of the titanium dioxide, and performing high molecular chain modification on titanium dioxide particles; stirring and ultrasonic treatment are started at the temperature of 50-90 ℃, and the ultrasonic treatment is started for 10-30 min and then is closed;
s2, coating film
S2.1, adjusting the pH value of the slurry obtained in the step S1 to 8-11 by using dilute alkali, adjusting the pH value for 5-15 min, and homogenizing for 10-15 min;
s2.2, adding a certain amount of silicate solution into the slurry obtained in the step S2.1 according to a specified time, and stirring and homogenizing for 15-40 min;
s2.3, adjusting the pH value of the slurry obtained in the step S2.2 to 5-7 by using dilute acid, adjusting the pH value for 10-15 min, and homogenizing for 20-40 min;
s2.4, adding a quantitative zirconium salt solution and a diluted alkali liquor into the slurry obtained in the step S2.3 at a constant speed in a parallel flow mode according to a specified time, controlling the pH value to be 5-7, and homogenizing for 20-40 min;
s2.5, adjusting the pH value of the slurry obtained in the step S2.4 to 7-9 by using dilute alkali according to a specified time, adding the slurry for stirring and homogenizing for 30-80 min;
s2.6, adding a sodium hexametaphosphate solution into the slurry obtained in the step S2.5 according to a set time, and stirring and homogenizing for 15-25 min;
s2.7, adding quantitative aluminum salt solution and dilute acid into the slurry obtained in the step S2.6 at a constant speed in a parallel flow mode according to a set time, controlling the pH value to be 7-9, and homogenizing for 20-40 min;
s2.8, adjusting the pH value of the slurry obtained in the step S2.7 to a required value by using dilute acid, keeping the pH value stable and unchanged, homogenizing for 30-120 min, and finishing coating;
s3, washing, drying and steaming the slurry obtained in the step S2.8; adding metered organic surface treating agent during steam powdering to finally obtain the high-gloss special titanium dioxide for the outdoor coating;
the high molecular polymer is a water-soluble high molecular polymer; the water-soluble high molecular polymer is one of polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, polyquaternary ammonium salt and polyethylene glycol;
the organic surface treating agent is one or more of polyalcohol or organic silicon; the added organic surface treating agent accounts for TiO calculated as solute20.01-1 wt% of the total amount;
the particle size of the uncoated titanium dioxide in the step S1 is 0.250-0.350 μm; the added dispersing agent is sodium hexametaphosphate, and the addition amount of the sodium hexametaphosphate is 0.05-1 wt% of the total amount of the titanium dioxide;
step S2.2 the silicate solution is NaSiO3The solution has a concentration of 100-280 g/L and is made of SiO2In terms of TiO20.01-1 wt% of the total amount; step S2.4 the zirconium salt solution is ZrOCl2Solution or ZrSO4From ZrO of2In terms of TiO20.01-1.5 wt% of the total amount;
the concentration of the sodium hexametaphosphate solution in the step S2.6 is 80-120 g/LTiO20.01-0.5% of the total amount;
with Al2O3The aluminum salt solution in the step S2.7 is NaAlO with the concentration of 150-170 g/L2Solution or 85-110 g/L Al2(SO4)3Solution and Al in aluminum salt2O3Is TiO 221-3 wt% of the total amount.
2. The preparation method of the special titanium dioxide for the high-gloss outdoor coating according to claim 1, characterized in that: the dilute alkali solution obtained in the steps S2.1, S2.4 and S2.5 is dilute NaOH or ammonia water solution with the concentration of 190-300 g/L; the dilute acid solution in the steps S2.3, S2.7 and S2.8 is dilute sulfuric acid, dilute hydrochloric acid or dilute phosphoric acid with the concentration of 140-160 g/L.
CN201910341712.2A 2019-04-26 2019-04-26 Preparation method of special titanium dioxide for high-gloss outdoor coating Active CN110003687B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910341712.2A CN110003687B (en) 2019-04-26 2019-04-26 Preparation method of special titanium dioxide for high-gloss outdoor coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910341712.2A CN110003687B (en) 2019-04-26 2019-04-26 Preparation method of special titanium dioxide for high-gloss outdoor coating

Publications (2)

Publication Number Publication Date
CN110003687A CN110003687A (en) 2019-07-12
CN110003687B true CN110003687B (en) 2021-06-25

Family

ID=67174370

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910341712.2A Active CN110003687B (en) 2019-04-26 2019-04-26 Preparation method of special titanium dioxide for high-gloss outdoor coating

Country Status (1)

Country Link
CN (1) CN110003687B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111117298A (en) * 2019-10-14 2020-05-08 江苏华力索菲新材料有限公司 Titanium dioxide surface treatment method for chinlon delustering agent
CN111040474B (en) * 2019-12-03 2022-03-18 河南佰利联新材料有限公司 Conductive titanium dioxide and preparation method thereof
CN111019402A (en) * 2019-12-18 2020-04-17 龙蟒佰利联集团股份有限公司 Preparation method of high-weather-resistance titanium dioxide
CN111334093B (en) * 2020-04-14 2021-09-14 河南佰利联新材料有限公司 Titanium dioxide for high-light-resistance laminated paper and preparation method thereof
CN111393876B (en) * 2020-04-30 2021-06-08 龙蟒佰利联集团股份有限公司 Preparation method of high-covering and high-gloss titanium dioxide
CN111393877A (en) * 2020-05-19 2020-07-10 河南佰利联新材料有限公司 Preparation method of titanium dioxide for color master batch
CN112024109A (en) * 2020-08-25 2020-12-04 攀钢集团重庆钒钛科技有限公司 Titanium dioxide particle size distribution control method
CN115678316A (en) * 2022-10-26 2023-02-03 徐州钛白化工有限责任公司 Preparation method of special titanium dioxide slurry for papermaking
CN115850998A (en) * 2022-11-30 2023-03-28 攀钢集团研究院有限公司 Method for improving brightness of titanium dioxide
CN115850999A (en) * 2022-11-30 2023-03-28 攀钢集团研究院有限公司 Preparation method of titanium dioxide for high-gloss high-dispersion ink

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1850915A (en) * 2006-05-18 2006-10-25 攀钢集团攀枝花钢铁研究院 Method for producing high weathering resistance titanium dioxide pigment
CN101255288A (en) * 2007-11-29 2008-09-03 江苏河海纳米科技股份有限公司 Nano titanium oxide inorganic surface treatment method
CN101684208A (en) * 2008-09-26 2010-03-31 比亚迪股份有限公司 Composite modified titanium dioxide and preparation method thereof
CN101693789A (en) * 2009-10-20 2010-04-14 杭州萧湘颜料化工有限公司 Titanium dioxide granular pigment and preparation method thereof
CN101880479A (en) * 2010-06-25 2010-11-10 宁波新福钛白粉有限公司 Method for producing special rutile type titanium white powder for power coating
CN102226043A (en) * 2011-04-20 2011-10-26 宁波新福钛白粉有限公司 Preparation method of titanium pigment used in ship paint
CN102924979A (en) * 2012-11-05 2013-02-13 昆明理工大学 Method for preparing inorganic and organic coating titanium dioxide
CN102936040A (en) * 2012-11-28 2013-02-20 四川龙蟒钛业股份有限公司 Production method of high-gloss and high-covering-capability rutile titanium dioxide
CN103214880A (en) * 2013-04-11 2013-07-24 湖南工业大学 Inorganic coating method for titanium dioxide
CN103224717A (en) * 2013-03-18 2013-07-31 中国科学院宁波材料技术与工程研究所 Preparation method of composite coating titanium dioxide pigment
CN103694745A (en) * 2014-01-15 2014-04-02 河南佰利联化学股份有限公司 Inorganic-organic surface treatment method for rutile titanium dioxide
CN104356693A (en) * 2014-11-13 2015-02-18 山东道恩钛业有限公司 Method for coating titanium dioxide Zr-Al based on sulfate method
CN105086523A (en) * 2015-08-21 2015-11-25 攀钢集团攀枝花钢铁研究院有限公司 Preparation method of high-dispersion titaninm dioxide
CN105949823A (en) * 2016-05-26 2016-09-21 宜宾天原集团股份有限公司 Method for coating titanium dioxide by using chloride by-product hydrochloric acid
CN106947296A (en) * 2017-04-26 2017-07-14 攀钢集团研究院有限公司 High-weatherability titanium dioxide and preparation method thereof
CN108997790A (en) * 2018-09-05 2018-12-14 襄阳龙蟒钛业有限公司 A kind of high glaze titanium white production method
CN108997791A (en) * 2018-09-05 2018-12-14 襄阳龙蟒钛业有限公司 A kind of high glaze titanium dioxide

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1850915A (en) * 2006-05-18 2006-10-25 攀钢集团攀枝花钢铁研究院 Method for producing high weathering resistance titanium dioxide pigment
CN101255288A (en) * 2007-11-29 2008-09-03 江苏河海纳米科技股份有限公司 Nano titanium oxide inorganic surface treatment method
CN101684208A (en) * 2008-09-26 2010-03-31 比亚迪股份有限公司 Composite modified titanium dioxide and preparation method thereof
CN101693789A (en) * 2009-10-20 2010-04-14 杭州萧湘颜料化工有限公司 Titanium dioxide granular pigment and preparation method thereof
CN101880479A (en) * 2010-06-25 2010-11-10 宁波新福钛白粉有限公司 Method for producing special rutile type titanium white powder for power coating
CN102226043A (en) * 2011-04-20 2011-10-26 宁波新福钛白粉有限公司 Preparation method of titanium pigment used in ship paint
CN102924979A (en) * 2012-11-05 2013-02-13 昆明理工大学 Method for preparing inorganic and organic coating titanium dioxide
CN102936040A (en) * 2012-11-28 2013-02-20 四川龙蟒钛业股份有限公司 Production method of high-gloss and high-covering-capability rutile titanium dioxide
CN103224717A (en) * 2013-03-18 2013-07-31 中国科学院宁波材料技术与工程研究所 Preparation method of composite coating titanium dioxide pigment
CN103214880A (en) * 2013-04-11 2013-07-24 湖南工业大学 Inorganic coating method for titanium dioxide
CN103694745A (en) * 2014-01-15 2014-04-02 河南佰利联化学股份有限公司 Inorganic-organic surface treatment method for rutile titanium dioxide
CN104356693A (en) * 2014-11-13 2015-02-18 山东道恩钛业有限公司 Method for coating titanium dioxide Zr-Al based on sulfate method
CN105086523A (en) * 2015-08-21 2015-11-25 攀钢集团攀枝花钢铁研究院有限公司 Preparation method of high-dispersion titaninm dioxide
CN105949823A (en) * 2016-05-26 2016-09-21 宜宾天原集团股份有限公司 Method for coating titanium dioxide by using chloride by-product hydrochloric acid
CN106947296A (en) * 2017-04-26 2017-07-14 攀钢集团研究院有限公司 High-weatherability titanium dioxide and preparation method thereof
CN108997790A (en) * 2018-09-05 2018-12-14 襄阳龙蟒钛业有限公司 A kind of high glaze titanium white production method
CN108997791A (en) * 2018-09-05 2018-12-14 襄阳龙蟒钛业有限公司 A kind of high glaze titanium dioxide

Also Published As

Publication number Publication date
CN110003687A (en) 2019-07-12

Similar Documents

Publication Publication Date Title
CN110003687B (en) Preparation method of special titanium dioxide for high-gloss outdoor coating
US6139617A (en) Titanium dioxide pigments
US4328040A (en) Process for the production of titanium dioxide pigments with high weather resistance
JP5363459B2 (en) Preparation of titanium dioxide pigments treated with coprecipitated mixed oxides
JPH0977512A (en) Flaky aluminum oxide, pearl luster pigment and its production
CN100545216C (en) A kind of preparation method of high weathering resistance titanium dioxide
KR960004637B1 (en) Titanium dioxide pigment coated with cerium cations, selected acid anions, and alumina
JP5250558B2 (en) Improved process for the production of zirconia treated titanium dioxide pigments
CN1217736A (en) Inorganic pigment coated with inorganic oxides
JPH06145556A (en) Pigment containing carbon black
JP2009527452A (en) Barium sulfate
CN110903681A (en) Preparation method of super-weather-resistant titanium dioxide
CN102516824A (en) Preparation method of color master batch titanium dioxide
CN108997789A (en) A kind of compound modified titanium and preparation method thereof
US20170306160A1 (en) Colored metallic pigment
US20140343212A1 (en) Treated inorganic pigments having improved dispersability and use thereof in coating compositions
CN113877563B (en) Cerium-coated titanium dioxide and preparation method thereof
CN111019402A (en) Preparation method of high-weather-resistance titanium dioxide
US5338354A (en) Composite pigmentary material
CN113105759A (en) Surface treatment method of titanium dioxide
CN111393876B (en) Preparation method of high-covering and high-gloss titanium dioxide
CN112552757A (en) Colored electrophoretic paint and preparation method thereof
CN110951282A (en) Preparation method for improving weather resistance of titanium dioxide
CN111471323B (en) Preparation method of special titanium dioxide for papermaking
CN110272643B (en) Preparation method of titanium dioxide based on low knife line purpose

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 454000 Fengfeng office, zhongzhan District, Jiaozuo City, Henan Province

Patentee after: Longbai Group Co.,Ltd.

Address before: 454000 Fengfeng office, zhongzhan District, Jiaozuo City, Henan Province

Patentee before: LOMON BILLIONS GROUP Co.,Ltd.