CN112321889A - Manufacturing process of liquid titanium dioxide for PVC plastic production - Google Patents

Manufacturing process of liquid titanium dioxide for PVC plastic production Download PDF

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CN112321889A
CN112321889A CN202011216745.3A CN202011216745A CN112321889A CN 112321889 A CN112321889 A CN 112321889A CN 202011216745 A CN202011216745 A CN 202011216745A CN 112321889 A CN112321889 A CN 112321889A
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titanium dioxide
liquid titanium
pvc plastic
plastic production
solvent
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许荣
张耀兰
高林
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Hu Ben New Material Technology Shanghai Co ltd
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Hu Ben New Material Technology Shanghai Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B29B7/005—Methods for mixing in batches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C08K2003/3081—Aluminum sulfate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/324—Alkali metal phosphate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/327—Aluminium phosphate

Abstract

The invention provides a manufacturing process of liquid titanium dioxide for PVC plastic production, and belongs to the technical field of titanium dioxide processing. The preparation process of the liquid titanium dioxide for PVC plastic production comprises the following steps: titanium dioxide, a solvent, a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent; wherein the solvent is any one of dioctyl phthalate and diisononyl phthalate; the preparation process of the liquid titanium dioxide comprises the following steps: dispersing powdery titanium dioxide in a solvent, and adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent. According to the invention, the liquid titanium white is prepared through rough grinding, refined grinding and banburying processes, and is used for PVC processing, so that the steps of filtering raw materials in the processing process can be reduced, the filter screen does not need to be cleaned frequently, the production efficiency is improved, and in addition, the titanium white in the liquid titanium white can be mixed with other materials in PVC more uniformly, so that the production of PVC is facilitated.

Description

Manufacturing process of liquid titanium dioxide for PVC plastic production
Technical Field
The invention relates to the field of titanium dioxide processing, in particular to a manufacturing process of liquid titanium dioxide for PVC plastic production.
Background
The plastic is a high molecular compound which is polymerized by addition polymerization or polycondensation reaction by using monomers as raw materials, has medium deformation resistance and the like, is arranged between fibers and rubber, and consists of synthetic resin, fillers, plasticizers, stabilizers, lubricants, pigments and other additives, wherein the main component of the plastic is resin. The resin means a polymer compound which has not been mixed with various additives. The term resin is originally named as lipids secreted by animals and plants, such as rosin, shellac, and the like. The resin accounts for about 40-100% of the total weight of the plastic. The basic properties of plastics are largely determined by the nature of the resin, but additives also play an important role. Some plastics consist essentially of synthetic resins, with no or little additives, such as plexiglas, polystyrene, etc. When PVC plastic is produced, titanium dioxide is added, the high covering power, high achromatism and pigment performance of the titanium dioxide are utilized for treatment, and the titanium dioxide can also improve the heat resistance, light resistance and weather resistance of the plastic product, so that the plastic product is prevented from being invaded by UV light, and the mechanical performance and the electrical performance of the plastic product are improved.
At present, in the production of PVC, powdery titanium dioxide is usually added into PVC, the powdery titanium dioxide is difficult to be uniformly filled when being mixed, and the powdery titanium dioxide has poor filterability, and a filter screen needs to be cleaned timely and frequently in the production process, so that the efficiency is poor and the energy consumption is high.
Disclosure of Invention
In order to make up for the defects, the invention provides a preparation process of liquid titanium dioxide for PVC plastic production, and aims to solve the problems that the traditional titanium dioxide is difficult to mix with other elements in PVC and has poor filterability.
The invention is realized by the following steps:
the invention provides a manufacturing process of liquid titanium dioxide for PVC plastic production, which comprises the following components: titanium dioxide, a solvent, a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent; wherein the solvent is any one of dioctyl phthalate and diisononyl phthalate; the preparation process of the liquid titanium dioxide comprises the following steps: dispersing powdery titanium dioxide in a solvent, adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent to form a mixed material, roughly grinding the obtained material to uniformly mix the material, then carrying out refined grinding on the material at the temperature of 60-80 ℃ for 4-6 hours, and banburying the obtained ground material for 1-2 hours to form a homogeneous thick solution after the refined grinding.
In one embodiment of the invention, the particle size of the titanium dioxide is not more than 50um, and the titanium dioxide is subjected to a milling process before use, and the titanium dioxide is milled to a powdery structure with the particle size of not more than 50um for standby.
In one embodiment of the present invention, the solvent is stirred using a disperser while the titanium dioxide, the stabilizer, the defoamer, the viscosity reducer, and the dispersant are added to the solvent.
In one embodiment of the invention, the stabilizer, the defoamer, the viscosity reducer and the dispersant are mixed according to a ratio of 1: 1: 1: 1 in a mixed ratio.
In one embodiment of the invention, the dispersant is a high-temperature resistant inorganic dispersant, and the high-temperature resistant inorganic dispersant is one or a combination of aluminum sulfate, aluminum phosphate and sodium phosphate.
In an embodiment of the present invention, when the material is subjected to the rough grinding process, a rough grinding machine is used, the rough grinding machine is a three-roll grinding machine, after the material is subjected to rough grinding, the particle size of the material is detected by a particle size detector, and after the particle size of the material meets the processing requirement, the material is subjected to fine grinding.
In one embodiment of the invention, in the fine grinding process, the material is ground by using a nano-grinder, and the particle size of the ground material is not more than 600 nm.
In one embodiment of the invention, the mill is banburied by an internal mixer, and the internal mixer is preheated before banburying, and the banburying temperature of the mill is not lower than 40 ℃.
In one embodiment of the present invention, the homogeneous thick solution formed by banburying is cooled to room temperature and then packaged.
The invention has the beneficial effects that: according to the manufacturing process of the liquid titanium dioxide for PVC plastic production, which is designed, the titanium dioxide, the solution, the stabilizer, the defoaming agent and the like are processed by adopting the rough grinding, the refined grinding and the banburying processes to obtain the liquid titanium dioxide, the liquid titanium dioxide is used in PVC processing, the titanium dioxide can be uniformly mixed with other materials in PVC, the production of PVC is facilitated, the steps of filtering raw materials are reduced in the process of producing the liquid titanium dioxide, the filter screen does not need to be cleaned frequently, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is an SEM image of a finished product after titanium dioxide is banburied;
FIG. 2 is a particle size diagram in a titanium dioxide coarse grinding process;
fig. 3 is a particle size diagram of the finished titanium white.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
The invention provides a preparation process of liquid titanium dioxide for PVC plastic production, which comprises the following components: titanium dioxide, a solvent, a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent; it can be understood that the materials are required to be selected according to the mass ratio for later use before the liquid titanium dioxide is prepared, and the ratio of the titanium dioxide to the solvent to the stabilizer to the defoamer to the viscosity reducer to the dispersant is 5: 8: 1: 1: 1: the method comprises the following steps of 1, after the materials are selected, the materials are separately stored in a sealed mode, the possibility that different materials are mixed before being manufactured is reduced, and the materials are prevented from being polluted by external sundries.
In this embodiment, the particle size of the titanium dioxide is not greater than 50um, and the titanium dioxide is milled to a powder structure with a particle size of not greater than 50um for standby use before use, the titanium dioxide can be formed by milling titanium dioxide particles, and the particle size of the titanium dioxide is in accordance with the processing requirement, while the titanium dioxide particles which are not in accordance with the processing requirement can be repeatedly milled until the processing requirement is satisfied;
wherein, the solvent is any one of dioctyl phthalate and diisononyl phthalate, and during the specific implementation, dioctyl phthalate (DOP) or diisononyl phthalate (DINP) can be selected as the solvent for use according to the actual requirement.
The preparation process of the liquid titanium dioxide comprises the following steps: dispersing powdery titanium dioxide in a solvent, adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent to form a mixed material, roughly grinding the obtained material to uniformly mix the material, then finely grinding the material at the temperature of 60 ℃, finely grinding for 4 hours, and after finely grinding, banburying the obtained ground material for 1 hour to form a homogeneous thick solution; in addition, when the liquid titanium dioxide is used for producing PVC, the filterability of the liquid titanium dioxide is stronger than that of the subpackaged titanium dioxide, the steps of filtering the raw materials can be reduced in the production process, the filter screen does not need to be cleaned frequently, the production efficiency is improved, and the consumption of energy is reduced.
In this embodiment, the solvent is stirred by using a dispersion machine while adding the titanium dioxide, the stabilizer, the defoamer, the viscosity reducer and the dispersant into the solvent, and the raw materials are stirred while being added, so that the raw materials can be mixed more fully; the stabilizer, the defoamer, the viscosity reducer and the dispersant are mixed according to the weight ratio of 1: 1: 1: 1, it can be understood that the proportion of the stabilizer, the defoamer, the viscosity reducer and the dispersant can be determined according to actual requirements; the dispersant is a high-temperature resistant inorganic dispersant, and the high-temperature resistant inorganic dispersant is one or a combination of more of aluminum sulfate, aluminum phosphate and sodium phosphate, and the dispersant can be a coating machine;
when the material is subjected to a rough grinding process, a rough grinding machine is used, the rough grinding machine is a three-roller grinding machine, after rough grinding is carried out on the material, the granularity of the material is detected by a granularity detector, and then the material is refined and ground after the granularity of the material meets the processing requirement; when the refining grinding process is carried out, a nano grinder is used for grinding the materials, and the granularity of the ground materials is not more than 600 nm; banburying the ground material by using an internal mixer, wherein the internal mixer is subjected to preheating treatment before banburying, the banburying temperature of the ground material is not lower than 40 ℃, and the banburying treatment of the ground material by the internal mixer is facilitated; cooling the homogeneous thick solution formed after banburying to room temperature, and then performing a packaging process, wherein the packaged titanium white liquid can be transported; further, when the packaging process is carried out, the homogeneous thick solution is filled into the storage tank by using a thick liquid quantitative filling machine, and after the filling is finished, the opening of the storage tank is sealed, so that the possibility of pollution of external impurities to the finished titanium white liquid is reduced, and the subsequent processing of PVC on the finished titanium white liquid is facilitated.
Example 2
The invention provides a preparation process of liquid titanium dioxide for PVC plastic production, which comprises the following components: titanium dioxide, a solvent, a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent; it can be understood that the materials are required to be selected according to the mass ratio for later use before the liquid titanium dioxide is prepared, and the ratio of the titanium dioxide to the solvent to the stabilizer to the defoamer to the viscosity reducer to the dispersant is 5: 8: 1: 1: 1: the method comprises the following steps of 1, after the materials are selected, the materials are separately stored in a sealed mode, the possibility that different materials are mixed before being manufactured is reduced, and the materials are prevented from being polluted by external sundries.
In this embodiment, the particle size of the titanium dioxide is not greater than 50um, and the titanium dioxide is milled to a powder structure with a particle size of not greater than 50um for standby use before use, the titanium dioxide can be formed by milling titanium dioxide particles, and the particle size of the titanium dioxide is in accordance with the processing requirement, while the titanium dioxide particles which are not in accordance with the processing requirement can be repeatedly milled until the processing requirement is satisfied;
wherein, the solvent is any one of dioctyl phthalate and diisononyl phthalate, and during the specific implementation, dioctyl phthalate (DOP) or diisononyl phthalate (DINP) can be selected as the solvent for use according to the actual requirement.
The preparation process of the liquid titanium dioxide comprises the following steps: dispersing powdery titanium dioxide in a solvent, adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent to form a mixed material, roughly grinding the obtained material to uniformly mix the material, then finely grinding the material at the temperature of 70 ℃, finely grinding for 5 hours, and after finely grinding, banburying the obtained ground material for 1.5 hours to form a homogeneous thick solution; in addition, when the liquid titanium dioxide is used for producing PVC, the filterability of the liquid titanium dioxide is stronger than that of the subpackaged titanium dioxide, the steps of filtering the raw materials can be reduced in the production process, the filter screen does not need to be cleaned frequently, the production efficiency is improved, and the consumption of energy is reduced.
In this embodiment, the solvent is stirred by using a dispersion machine while adding the titanium dioxide, the stabilizer, the defoamer, the viscosity reducer and the dispersant into the solvent, and the raw materials are stirred while being added, so that the raw materials can be mixed more fully; the stabilizer, the defoamer, the viscosity reducer and the dispersant are mixed according to the weight ratio of 1: 1: 1: 1, it can be understood that the proportion of the stabilizer, the defoamer, the viscosity reducer and the dispersant can be determined according to actual requirements; the dispersant is a high-temperature resistant inorganic dispersant, and the high-temperature resistant inorganic dispersant is one or a combination of more of aluminum sulfate, aluminum phosphate and sodium phosphate, and the dispersant can be a coating machine;
when the material is subjected to a rough grinding process, a rough grinding machine is used, the rough grinding machine is a three-roller grinding machine, after rough grinding is carried out on the material, the granularity of the material is detected by a granularity detector, and then the material is refined and ground after the granularity of the material meets the processing requirement; when the refining grinding process is carried out, a nano grinder is used for grinding the materials, and the granularity of the ground materials is not more than 600 nm; banburying the ground material by using an internal mixer, wherein the internal mixer is subjected to preheating treatment before banburying, the banburying temperature of the ground material is not lower than 40 ℃, and the banburying treatment of the ground material by the internal mixer is facilitated; cooling the homogeneous thick solution formed after banburying to room temperature, and then performing a packaging process, wherein the packaged titanium white liquid can be transported; further, when the packaging process is carried out, the homogeneous thick solution is filled into the storage tank by using a thick liquid quantitative filling machine, and after the filling is finished, the opening of the storage tank is sealed, so that the possibility of pollution of external impurities to the finished titanium white liquid is reduced, and the subsequent processing of PVC on the finished titanium white liquid is facilitated.
Example 3
The invention provides a preparation process of liquid titanium dioxide for PVC plastic production, which comprises the following components: titanium dioxide, a solvent, a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent; it can be understood that the materials are required to be selected according to the mass ratio for later use before the liquid titanium dioxide is prepared, and the ratio of the titanium dioxide to the solvent to the stabilizer to the defoamer to the viscosity reducer to the dispersant is 5: 8: 1: 1: 1: the method comprises the following steps of 1, after the materials are selected, the materials are separately stored in a sealed mode, the possibility that different materials are mixed before being manufactured is reduced, and the materials are prevented from being polluted by external sundries.
In this embodiment, the particle size of the titanium dioxide is not greater than 50um, and the titanium dioxide is milled to a powder structure with a particle size of not greater than 50um for standby use before use, the titanium dioxide can be formed by milling titanium dioxide particles, and the particle size of the titanium dioxide is in accordance with the processing requirement, while the titanium dioxide particles which are not in accordance with the processing requirement can be repeatedly milled until the processing requirement is satisfied;
wherein, the solvent is any one of dioctyl phthalate and diisononyl phthalate, and during the specific implementation, dioctyl phthalate (DOP) or diisononyl phthalate (DINP) can be selected as the solvent for use according to the actual requirement.
The preparation process of the liquid titanium dioxide comprises the following steps: dispersing powdery titanium dioxide in a solvent, adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent to form a mixed material, roughly grinding the obtained material to uniformly mix the material, then finely grinding the material at 80 ℃, finely grinding for 6 hours, banburying the obtained ground material for 2 hours after fine grinding to form a homogeneous thick solution, in the specific implementation, the mixed material containing the titanium dioxide is roughly ground, finely ground and banburied to form a thick solution, the particle size of the titanium dioxide is reduced, and the thick solution containing the titanium dioxide can be more uniformly mixed with other materials in PVC when used for PVC processing, and the liquid titanium dioxide liquid is favorable for accurate quantification and good in filterability and is favorable for a filtering process; in addition, when the liquid titanium dioxide is used for producing PVC, the filterability of the liquid titanium dioxide is stronger than that of the subpackaged titanium dioxide, the steps of filtering the raw materials can be reduced in the production process, the filter screen does not need to be cleaned frequently, the production efficiency is improved, and the consumption of energy is reduced.
In this embodiment, the solvent is stirred by using a dispersion machine while adding the titanium dioxide, the stabilizer, the defoamer, the viscosity reducer and the dispersant into the solvent, and the raw materials are stirred while being added, so that the raw materials can be mixed more fully; the stabilizer, the defoamer, the viscosity reducer and the dispersant are mixed according to the weight ratio of 1: 1: 1: 1, it can be understood that the proportion of the stabilizer, the defoamer, the viscosity reducer and the dispersant can be determined according to actual requirements; the dispersant is a high-temperature resistant inorganic dispersant, and the high-temperature resistant inorganic dispersant is one or a combination of more of aluminum sulfate, aluminum phosphate and sodium phosphate, and the dispersant can be a coating machine;
when the material is subjected to a rough grinding process, a rough grinding machine is used, the rough grinding machine is a three-roller grinding machine, after rough grinding is carried out on the material, the granularity of the material is detected by a granularity detector, and then the material is refined and ground after the granularity of the material meets the processing requirement; when the refining grinding process is carried out, a nano grinder is used for grinding the materials, and the granularity of the ground materials is not more than 600 nm; banburying the ground material by using an internal mixer, wherein the internal mixer is subjected to preheating treatment before banburying, the banburying temperature of the ground material is not lower than 40 ℃, and the banburying treatment of the ground material by the internal mixer is facilitated; cooling the homogeneous thick solution formed after banburying to room temperature, and then performing a packaging process, wherein the packaged titanium white liquid can be transported; further, when the packaging process is carried out, the homogeneous thick solution is filled into the storage tank by using a thick liquid quantitative filling machine, and after the filling is finished, the opening of the storage tank is sealed, so that the possibility of pollution of external impurities to the finished titanium white liquid is reduced, and the subsequent processing of PVC on the finished titanium white liquid is facilitated.
Characterization results
1. Micro-topography testing
FIG. 1 is a SEM image of finished titanium dioxide, wherein a in FIG. 1 is a SEM image under a 20nm scale, and 1b is a SEM image under a 5nm scale, and it can be seen that the titanium dioxide is externally coated with metal salt.
2. Particle size test
Wherein, fig. 2 is a report of particle size testing after the coarse grinding of titanium dioxide, fig. 3 is a report of particle size testing after the refined grinding of titanium dioxide, and the change of particle size of titanium dioxide before and after the coarse grinding and the refined grinding can be clearly seen by combining fig. 2 and fig. 3.
In conclusion, the preparation process of the liquid titanium dioxide for PVC plastic production comprises the following steps: selecting any one of dioctyl phthalate (DOP) or diisononyl phthalate (DINP) as a solvent to be mixed with titanium dioxide, adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent, roughly grinding, refining, grinding and banburying to form a thick solution containing the titanium dioxide to obtain liquid titanium dioxide, and using the liquid titanium dioxide in PVC processing, wherein the titanium dioxide can be more uniformly mixed with other materials in PVC, and the liquid titanium dioxide liquid is favorable for accurate quantification, good in filterability and favorable for a filtering process; in addition, when the liquid titanium dioxide is used for producing PVC, the filterability of the liquid titanium dioxide is stronger than that of the subpackaged titanium dioxide, the steps of filtering the raw materials can be reduced in the production process, the filter screen does not need to be cleaned frequently, the production efficiency is improved, and the consumption of energy is reduced.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

  1. The preparation process of the liquid titanium dioxide for PVC plastic production is characterized in that the liquid titanium dioxide comprises the following components: titanium dioxide, a solvent, a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent;
    wherein the solvent is any one of dioctyl phthalate and diisononyl phthalate;
    the preparation process of the liquid titanium dioxide comprises the following steps: dispersing powdery titanium dioxide in a solvent, adding a stabilizer, a defoaming agent, a viscosity reducer and a dispersing agent to form a mixed material, roughly grinding the obtained material to uniformly mix the material, then carrying out refined grinding on the material at the temperature of 60-80 ℃ for 4-6 hours, and banburying the obtained ground material for 1-2 hours to form a homogeneous thick solution after the refined grinding.
  2. 2. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein the particle size of the titanium dioxide is not more than 50um, and the titanium dioxide is milled to a powdery structure with particle size not more than 50um for standby by a milling process before use.
  3. 3. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein the solvent is stirred by a disperser while the titanium dioxide, the stabilizer, the defoamer, the viscosity reducer and the dispersant are added into the solvent.
  4. 4. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein the stabilizer, the defoamer, the viscosity reducer and the dispersant are mixed according to a ratio of 1: 1: 1: 1 in a mixed ratio.
  5. 5. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein the dispersant is a high temperature resistant inorganic dispersant, and the high temperature resistant inorganic dispersant is one or a combination of aluminum sulfate, aluminum phosphate and sodium phosphate.
  6. 6. The process for preparing the liquid titanium dioxide for PVC plastic production according to claim 1, wherein a rough grinding machine is used for rough grinding of the materials, the rough grinding machine is a three-roll grinding machine, the particle size of the materials is detected by a particle size detector after rough grinding of the materials, and the materials are refined and ground after the particle size of the materials meets the processing requirements.
  7. 7. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein in the refining and grinding process, the material is ground by a nano grinder, and the particle size of the ground material is not more than 600 nm.
  8. 8. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein the mill is banburied by an internal mixer, and the internal mixer is preheated before banburying, and the banburying temperature of the mill is not lower than 40 ℃.
  9. 9. The process for preparing liquid titanium dioxide for PVC plastic production according to claim 1, wherein the homogeneous thick solution formed by banburying is cooled to room temperature and then packaged.
CN202011216745.3A 2020-11-04 2020-11-04 Manufacturing process of liquid titanium dioxide for PVC plastic production Pending CN112321889A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501732A (en) * 1994-02-28 1996-03-26 E. I. Du Pont De Nemours And Company Process for preparing silanized TiO2 pigments using a media mill
AU6794498A (en) * 1997-05-30 1998-12-30 Kemicraft Overseas Limited Continuous non-polluting liquid phase titanium dioxide process
CN101280128A (en) * 2008-06-02 2008-10-08 深圳职业技术学院 Anatase titanium dioxide type titanium white pulp and preparation thereof
CN101631824A (en) * 2006-08-25 2010-01-20 萨克特本化学有限责任公司 The matrix material that contains titanium dioxide
CN101705035A (en) * 2009-11-11 2010-05-12 江苏镇钛化工有限公司 Method for preparing predispersed rutile type titanium pigment paste
CN102146220A (en) * 2011-05-04 2011-08-10 贝内克一长顺汽车内饰材料（张家港）有限公司 Method for preparing titanium white pigment paste for automobile interior trim leather
CN104109311A (en) * 2014-07-09 2014-10-22 浙江卡尔克莱壁纸制造有限公司 Wallpaper foaming pulp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501732A (en) * 1994-02-28 1996-03-26 E. I. Du Pont De Nemours And Company Process for preparing silanized TiO2 pigments using a media mill
AU6794498A (en) * 1997-05-30 1998-12-30 Kemicraft Overseas Limited Continuous non-polluting liquid phase titanium dioxide process
CN101631824A (en) * 2006-08-25 2010-01-20 萨克特本化学有限责任公司 The matrix material that contains titanium dioxide
CN101280128A (en) * 2008-06-02 2008-10-08 深圳职业技术学院 Anatase titanium dioxide type titanium white pulp and preparation thereof
CN101705035A (en) * 2009-11-11 2010-05-12 江苏镇钛化工有限公司 Method for preparing predispersed rutile type titanium pigment paste
CN102146220A (en) * 2011-05-04 2011-08-10 贝内克一长顺汽车内饰材料（张家港）有限公司 Method for preparing titanium white pigment paste for automobile interior trim leather
CN104109311A (en) * 2014-07-09 2014-10-22 浙江卡尔克莱壁纸制造有限公司 Wallpaper foaming pulp

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Application publication date: 20210205