CN111363386B - Preparation method of titanium dioxide for delustering chinlon chemical fiber - Google Patents

Preparation method of titanium dioxide for delustering chinlon chemical fiber Download PDF

Info

Publication number
CN111363386B
CN111363386B CN202010390867.8A CN202010390867A CN111363386B CN 111363386 B CN111363386 B CN 111363386B CN 202010390867 A CN202010390867 A CN 202010390867A CN 111363386 B CN111363386 B CN 111363386B
Authority
CN
China
Prior art keywords
slurry
titanium dioxide
stirring
minutes
pentaerythritol
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
CN202010390867.8A
Other languages
Chinese (zh)
Other versions
CN111363386A (en
Inventor
王彦华
夏浙安
章圣苗
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.)
East China University of Science and Technology
Original Assignee
East China University of Science and Technology
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 East China University of Science and Technology filed Critical East China University of Science and Technology
Priority to CN202010390867.8A priority Critical patent/CN111363386B/en
Publication of CN111363386A publication Critical patent/CN111363386A/en
Application granted granted Critical
Publication of CN111363386B publication Critical patent/CN111363386B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C09C1/3692—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
    • 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
    • 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
    • C09C3/06—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

A preparation method of titanium dioxide for delustering chinlon chemical fibers is characterized by comprising the following steps: dispersing pigment-grade anatase titanium dioxide into water slurry, and grinding, diluting and grading to remove large particles; then coating antimony oxide and hydrated zirconium oxide on the surfaces of the titanium dioxide particles; and then pentaerythritol is used for treating the surface of the inorganic coated titanium dioxide particles to obtain the titanium dioxide for delustering the nylon chemical fiber.

Description

Preparation method of titanium dioxide for delustering chinlon chemical fiber
Technical Field
The invention relates to a preparation method of titanium dioxide for delustering chinlon chemical fibers.
Background
The existing titanium dioxide for delustring of chinlon chemical fiber is coated by hydrated silicon oxide and hydrated aluminum oxide, and the hydrated silicon oxide and the hydrated aluminum oxide are coated, so that the surface of titanium dioxide is isolated from water and oxygen in the air, the aim is to eliminate the photocatalysis phenomenon of the titanium dioxide, and the coating method has the problems that: firstly, due to the existence of hydrated alumina, the hydrated alumina can be reduced into aluminum by caprolactam, scaling is caused on the surface of a heat exchanger tube array of a prepolymerization tower, the heat exchange effect is influenced, the scaling can automatically fall off to a certain thickness, and the fallen matter enters a product to cause subsequent spinning and yarn breaking, so that great loss is caused. Secondly, due to the existence of hydrated silicon oxide, the hydrated silicon oxide is easily washed by the extraction water and enters an extraction water recovery system, water is continuously evaporated in the extraction water recovery system, the concentration of the hydrated silicon oxide is continuously increased, the hydrated silicon oxide is adsorbed in the tube array of the triple-effect evaporator, the heat exchange effect of the triple-effect evaporator is reduced until the tube array of the triple-effect evaporator is blocked, and the production cannot be continued.
In order to solve the problems, the invention adopts the technical scheme that the surface of a titanium dioxide particle is coated with a layer of antimony oxide which can reduce the photocatalysis phenomenon of the titanium dioxide, and then the surface of the titanium dioxide particle is coated with a layer of hydrous zirconium oxide which can isolate the surface of the titanium dioxide from water and oxygen in the air, so that the photocatalysis phenomenon of the titanium dioxide is eliminated. In order to ensure that the obtained titanium dioxide particles have good dispersibility and few large particles, the surfaces of the titanium dioxide particles coated with inorganic films are treated by pentaerythritol, and the pentaerythritol can prevent the titanium dioxide particles from agglomerating.
Disclosure of Invention
A preparation method of titanium dioxide for delustering chinlon chemical fibers is characterized by comprising the following steps: dispersing pigment-grade anatase titanium dioxide into water slurry, and grinding, diluting and grading to remove large particles; then coating antimony oxide and hydrated zirconium oxide on the surfaces of the titanium dioxide particles; and then pentaerythritol is used for treating the surface of the inorganic coated titanium dioxide particles to obtain the titanium dioxide for delustering the nylon chemical fiber.
The method comprises the steps of dispersing pigment-grade anatase titanium dioxide into water slurry, grinding, diluting and grading to remove large particles, and is characterized in that: dispersing 200 parts by weight of pigment-grade anatase titanium dioxide in 200 parts by weight of deionized water, adding 0.4-0.8 part by weight of sodium polyacrylate dispersant, and dispersing for 30-60 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by using a grinder, then transferring the slurry into a stirring kettle, adding 800 parts of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle for later use.
The method is characterized in that the surface of the titanium dioxide particles is coated with antimony oxide and hydrous zirconium oxide, and the method comprises the following steps: heating the slurry to 80 ℃, adding 0.8-1.2 parts of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 4-6 parts of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 12-15 parts of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 30-40 parts of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
The surface of the titanium dioxide particles coated with the inorganic coating is treated by pentaerythritol, and the method is characterized in that: putting the filter cake into a pulping tank, adding 300 parts of deionized water into the filter cake for pulping, adding 0.6-0.8 part of sodium polyacrylate dispersant into the pulp, stirring for 30 minutes, weighing 0.5-1.0 part of pentaerythritol, adding the pentaerythritol into the pulp, and stirring for 1 hour to obtain the TiO with the surface modified by the pentaerythritol and uniformly dispersed2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
Detailed Description
Example 1
Dispersing 2000kg of pigment-grade anatase titanium dioxide in 2000kg of deionized water, adding 6kg of sodium polyacrylate dispersant, and dispersing for 45 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by a grinder, transferring the slurry into a stirring kettle, adding 8000kg of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle. Heating the slurry to 80 ℃, adding 8kg of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 40kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 120kg of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 300kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
Putting the filter cake into a pulping tank, adding 3000kg of deionized water into the filter cake for pulping, adding 7kg of sodium polyacrylate dispersant into the slurry, stirring for 30 minutes, weighing 5kg of pentaerythritol, adding the pentaerythritol into the slurry, and stirring for 1 hour to obtain the TiO with the pentaerythritol modified surface and uniform dispersion2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
Example 2
Dispersing 2000kg of pigment-grade anatase titanium dioxide in 2000kg of deionized water, adding 7kg of sodium polyacrylate dispersant, and dispersing for 50 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by a grinder, transferring the slurry into a stirring kettle, adding 8000kg of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle. Heating the slurry to 80 ℃, adding 12kg of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 60kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 150kg of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 400kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
Putting the filter cake into a pulping tank, adding 3000kg of deionized water into the filter cake for pulping, adding 8kg of sodium polyacrylate dispersant into the slurry, stirring for 30 minutes, weighing 10kg of pentaerythritol, adding into the slurry, and stirring for 1 hour to obtain the TiO with the pentaerythritol modified surface and uniform dispersion2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
Example 3
Dispersing 2000kg of pigment-grade anatase titanium dioxide in 2000kg of deionized water, adding 4kg of sodium polyacrylate dispersant, and dispersing for 30 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by a grinder, transferring the slurry into a stirring kettle, adding 8000kg of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle. Heating the slurry to 80 ℃, adding 10kg of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 50kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 130kg of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 350kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
Putting the filter cake into a pulping tank, adding 3000kg of deionized water into the filter cake for pulping, adding 6kg of sodium polyacrylate dispersant into the slurry, stirring for 30 minutes, weighing 8kg of pentaerythritol, adding into the slurry, and stirring for 1 hour to obtain the TiO with the surface modified by the pentaerythritol and uniformly dispersed2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
Example 4
Dispersing 2000kg of pigment-grade anatase titanium dioxide in 2000kg of deionized water, adding 5kg of sodium polyacrylate dispersant, and dispersing for 40 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by a grinder, transferring the slurry into a stirring kettle, adding 8000kg of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle. Heating the slurry to 80 ℃, adding 11kg of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 48kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 130kg of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 380kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
Putting the filter cake into a pulping tank, adding 3000kg of deionized water into the filter cake for pulping, adding 6.8kg of sodium polyacrylate dispersant into the slurry, stirring for 30 minutes, weighing 6kg of pentaerythritol, adding into the slurry, stirring for 1 hour to obtain the TiO with the surface modified by the pentaerythritol and uniformly dispersed2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
Example 5
Dispersing 2000kg of pigment-grade anatase titanium dioxide in 2000kg of deionized water, adding 4kg of sodium polyacrylate dispersant, and dispersing for 60 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by a grinder, transferring the slurry into a stirring kettle, adding 8000kg of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle. Heating the slurry to 80 ℃, adding 9kg of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 42kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 140kg of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 390kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
Putting the filter cake into a pulping tank, adding 3000kg of deionized water into the filter cake for pulping, adding 7.4kg of sodium polyacrylate dispersant into the slurry, stirring for 30 minutes, weighing 9kg of pentaerythritol, adding the pentaerythritol into the slurry, and stirring for 1 hour to obtain the TiO with the pentaerythritol modified surface and uniform dispersion2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
Example 6
Dispersing 2000kg of pigment-grade anatase titanium dioxide in 2000kg of deionized water, adding 4kg of sodium polyacrylate dispersant, and dispersing for 30 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by a grinder, transferring the slurry into a stirring kettle, adding 8000kg of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle. Heating the slurry to 80 ℃, adding 8.8kg of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 43kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 128kg of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 330kg of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
Putting the filter cake into a pulping tank, adding 3000kg of deionized water into the filter cake for pulping, adding 7.8kg of sodium polyacrylate dispersant into the slurry, stirring for 30 minutes, weighing 7.5kg of pentaerythritol, adding the pentaerythritol into the slurry, and stirring for 1 hour to obtain the TiO with the pentaerythritol modified surface and uniform dispersion2Drying the slurry, pulverizing the dried material with a pulverizer, and packaging to obtain chinlonTitanium dioxide for fibers.
Example 7
In the prior art, hydrated silicon oxide and hydrated alumina are adopted to coat titanium dioxide for delustring of polyamide chemical fiber: the fouling period of the heat exchanger tube array of the prepolymerization tower is less than 3 months, and the fouling period of the tube array of the triple-effect evaporator is less than 3 months;
example 1 titanium dioxide for delustering polyamide chemical fiber: the fouling period of the heat exchanger tube array of the prepolymerization tower is more than 12 months, and the fouling period of the tube array of the triple-effect evaporator is more than 12 months;
example 2 titanium dioxide for delustering polyamide chemical fiber: the fouling period of the heat exchanger tube array of the prepolymerization tower is more than 12 months, and the fouling period of the tube array of the triple-effect evaporator is more than 12 months;
example 3 titanium dioxide for delustering chinlon chemical fiber: the fouling period of the heat exchanger tube array of the prepolymerization tower is more than 12 months, and the fouling period of the tube array of the triple-effect evaporator is more than 12 months;
example 4 titanium dioxide for delustering chinlon chemical fiber: the fouling period of the heat exchanger tube array of the prepolymerization tower is more than 12 months, and the fouling period of the tube array of the triple-effect evaporator is more than 12 months;
example 5 titanium dioxide for delustering chinlon chemical fiber: the fouling period of the heat exchanger tube array of the prepolymerization tower is more than 12 months, and the fouling period of the tube array of the triple-effect evaporator is more than 12 months;
example 6 titanium dioxide for delustering nylon chemical fibers: the fouling period of the heat exchanger tube array of the prepolymerization tower is more than 12 months, and the fouling period of the tube array of the triple-effect evaporator is more than 12 months.

Claims (4)

1. A preparation method of titanium dioxide for delustering chinlon chemical fibers is characterized by comprising the following steps: dispersing pigment-grade anatase titanium dioxide into water slurry, and grinding, diluting and grading to remove large particles; then coating antimony oxide and hydrated zirconium oxide on the surfaces of the titanium dioxide particles; and then pentaerythritol is used for treating the surface of the inorganic coated titanium dioxide particles to obtain the titanium dioxide for delustering the nylon chemical fiber.
2. The method of claim 1, wherein the pigment-grade anatase titanium dioxide is dispersed in an aqueous slurry and ground, diluted, and classified to remove large particles, wherein the method comprises the steps of: dispersing 200 parts by weight of pigment-grade anatase titanium dioxide in 200 parts by weight of deionized water, adding 0.4-0.8 part by weight of sodium polyacrylate dispersant, and dispersing for 30-60 minutes by using a high-speed dispersion machine to prepare slurry; grinding the slurry twice by using a grinder, then transferring the slurry into a stirring kettle, adding 800 parts of deionized water into the slurry for dilution, continuously feeding the diluted slurry into a horizontal spiral discharging centrifugal classifier for classification, removing large-particle materials, and feeding fine-particle materials into the stirring kettle for later use.
3. The method of claim 1, wherein the surface of the titanium dioxide particles is coated with antimony oxide, hydrous zirconium oxide, and wherein: heating the slurry to 80 ℃, adding 0.8-1.2 parts of antimony trichloride into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 4-6 parts of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; adding 12-15 parts of zirconium oxychloride octahydrate into the slurry under continuous stirring, continuously stirring for 30 minutes, slowly adding 30-40 parts of 10% sodium hydroxide into the slurry, and controlling the adding time to be 3 hours; stirring is continued for 30 minutes, the slurry is sent into a plate-and-frame filter press for filtration, and the filter cake is washed by deionized water until no chloride ion exists.
4. The method of claim 1, wherein the surface of the inorganic coated titanium dioxide particles is treated with pentaerythritol, characterized in that: putting the filter cake into a pulping tank, adding 300 parts of deionized water into the filter cake for pulping, adding 0.6-0.8 part of sodium polyacrylate dispersant into the pulp, stirring for 30 minutes, weighing 0.5-1.0 part of pentaerythritol, adding the pentaerythritol into the pulp, and stirring for 1 hour to obtain the TiO with the surface modified by the pentaerythritol and uniformly dispersed2And (3) sizing agent, drying the sizing agent, crushing the dried material by using a crusher, and packaging to obtain the titanium dioxide for the nylon chemical fiber.
CN202010390867.8A 2020-05-11 2020-05-11 Preparation method of titanium dioxide for delustering chinlon chemical fiber Active CN111363386B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010390867.8A CN111363386B (en) 2020-05-11 2020-05-11 Preparation method of titanium dioxide for delustering chinlon chemical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010390867.8A CN111363386B (en) 2020-05-11 2020-05-11 Preparation method of titanium dioxide for delustering chinlon chemical fiber

Publications (2)

Publication Number Publication Date
CN111363386A CN111363386A (en) 2020-07-03
CN111363386B true CN111363386B (en) 2021-07-27

Family

ID=71203844

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010390867.8A Active CN111363386B (en) 2020-05-11 2020-05-11 Preparation method of titanium dioxide for delustering chinlon chemical fiber

Country Status (1)

Country Link
CN (1) CN111363386B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02194064A (en) * 1989-01-20 1990-07-31 Teika Corp Antimony-containing minute titanium dioxide powder
CN101851435B (en) * 2010-05-26 2013-05-22 宁波新福钛白粉有限公司 Method for producing high-brightness blue-phase rutile type titanium dioxide
CN109825113A (en) * 2019-02-25 2019-05-31 华东理工大学 A kind of preparation method of spandex chemical fibre of titanium dioxide

Also Published As

Publication number Publication date
CN111363386A (en) 2020-07-03

Similar Documents

Publication Publication Date Title
JP6765486B2 (en) Redispersion of microfibrillated cellulose
CN100392024C (en) Titanium dioxide pigment and its preparing method
KR100245762B1 (en) Grinding alkaline earth metal pigments
CN100447314C (en) Titanium white for dry acrylic spinning delustering its preparing method
US7238231B1 (en) Process for manufacturing zirconia-treated titanium dioxide pigments
CN103819943B (en) Produce the method for the anti-yellowing property general titanium dioxide of anatase titanium dioxide
CN102199367B (en) Method for preparing titanium dioxide pigment with high-temperature resistance
EP0981584B1 (en) A method for making a photodurable aqueous titanium dioxide pigment slurry
US4784841A (en) Process for the production of coarse, scrubbing aggregates of titanium dioxide particles by oxidation of titanium tetrachloride in the vapor phase and use of said aggregates for the prevention of deposit formation in the same production process
CN100355658C (en) Method for preparing anatase chemical fiber special titanium pigment
CA2329824C (en) Very high solids tio2 slurries
CN104828861B (en) A kind of industrial metatitanic acid grading produces the method for pigment titanium white
CN109535775A (en) The preparation method of ink tailored version titanium dioxide
CN112408439B (en) Method for preparing superfine magnesium hydroxide for flame retardant by using magnesium hydroxide coarse powder as raw material
CN113060748B (en) Submicron boehmite and preparation method
JPH09278442A (en) Production of rutile titanium dioxide
CN105819484B (en) A kind of Nano-meter CaCO33/SiO2The preparation method and dispersing method of compound particle
CN111363386B (en) Preparation method of titanium dioxide for delustering chinlon chemical fiber
CN114657813B (en) Preparation method of high-retention-rate and high-light-resistance titanium dioxide water slurry for papermaking
CN101891972A (en) Method for producing chemical fiber titanium dioxide by surface coating of common titanium dioxide (TiO2) in solvent phase
EP2900761B1 (en) Method for producing basic products from ash, in particular paper ash
CN113044879B (en) Method for improving quality of titanium dioxide by sulfuric acid method
JPS6223989B2 (en)
CN109824083B (en) Method for improving weather resistance of titanium dioxide produced by chlorination process
US5338354A (en) Composite pigmentary material

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