CN108727906A - Aqueous Titanium dioxide slurry and the method for preparing aqueous titanium white mill base material using good pressure distribution technique - Google Patents
Aqueous Titanium dioxide slurry and the method for preparing aqueous titanium white mill base material using good pressure distribution technique Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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Abstract
Aqueous titanium white mill base material method is prepared the invention discloses a kind of aqueous Titanium dioxide slurry and using good pressure distribution technique, aqueous Titanium dioxide slurry has component ratio：45-65 parts of titanium dioxide；1.3-4.0 parts of dispersant；0.2-1 parts of antifoaming agent；0.4-2 parts of wetting agent；0.5-1.5 parts of anti-settling agent；26.5-52.6 parts of water.The present invention prepares aqueous titanium white mill base material step：Dispersant, antifoaming agent, wetting agent and water is first weighed to be mixed；Redisperse is simultaneously slowly added to titanium dioxide；It is carried out after charging pre-dispersed, obtains Titanium dioxide slurry；High-pressure homogeneous dispersion again；Then anti-settling agent is added, redisperse to slurry is uniformly mixed, and obtains high dispersive titanium white mill base.Preparation method of the present invention is simple to operation, environment friendly and pollution-free, and titanium white slurry obtained has the characteristics that favorable dispersibility, particle diameter distribution are uniform, storage time is long, can be applied to the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc..
Description
Technical field
The invention belongs to chemical technology fields, and in particular to a kind of titanium white mill base material and prepare titanium using good pressure distribution technique
The method of white slurry can be applied to the preparation of aqueous architectural coating, woodcare paint, ceramic coating.
Background technology
Coating is functional material important in national economy, and body surface, shape are coated in by different construction technologies
The strong, coating with some strength at a layer adhesion.Protection is played to object, decoration, promotes the functions such as value of the product.Extensively
Applied to fields such as building decoration, petrochemical industry, auto industry, aerospaces.With the promotion of scientific and technological level and people's environmental protection
The enhancing of consciousness, requirement of the people to coating is gradually increased, other than the basic performance and decoration functions that meet coating, ring
The requirement of guarantor property, application property, functionality, storage stability and energy consumption etc. gradually causes to pay close attention to.
Titanium dioxide is most important pigment in coating industry.In application process, in order to improve its production efficiency, usually will
It is prepared into titanium dioxide mill base, is then mixed with mill base and resin, solvent and auxiliary agent etc. to obtain required coating.Wherein color
The stability of slurry can directly influence the performances such as the mechanical performance of coating, construction effect, weather-proof, corrosion-resistant.In general, mill base system
Standby process is made of wetting, separation and stabilisation three phases.Three processes complement each other, and mutually restrict, any one process
If effect is undesirable, required degree of scatter is just not achieved in slurry.Since titanium dioxide is than great, slurry is very easy to divide
Layer, sedimentation, particle return the problems such as thick, stability declines.Therefore, one kind easy to operate, safety and environmental protection, dispersion are researched and developed surely
Fixed titanium white Preparation technique of color paste is most important.
High pressure homogenizer is a kind of novel mixing and dispersing device, compared to the dispersion of such as high speed dispersor, ultrasonic wave, three rollers
Traditional processing method such as machine, grinder, with superior dispersion efficiency, pigment particles particle diameter distribution is uniform, and dispersion is steady
It is qualitative good.It is widely used in the research and development in the fields such as lotion, medicine, liposome, coating.For current Titanium dioxide slurry system
Existing shortcoming during standby is made well dispersed, particle diameter distribution is uniform, storage stability is excellent by technological improvement
Titanium white dispersed paste become technical problem urgently to be resolved hurrily.
Invention content
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind
Aqueous Titanium dioxide slurry and the method for preparing aqueous titanium white mill base material using good pressure distribution technique, titanium white dispersed paste particle diameter distribution
Uniformly, storage stability is good.Good application performance is shown in Environmental Protective Water-paint.Preparation process technique essence of the present invention
Simple, easily operated, environmentally friendly, environment friendly and pollution-free, prepared Titanium dioxide slurry has good dispersibility and storage steady
It is qualitative.It can be applied to the various fields such as aqueous architectural coating, woodcare paint, ceramic coating.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of aqueous Titanium dioxide slurry adds up to 100 parts, by the slurry of following mass fraction according to the number of pulp components
Group is grouped as：
As currently preferred technical solution, aqueous Titanium dioxide slurry adds up to 100 parts according to the number of pulp components,
It is made of the pulp components of following mass fraction：
Above-mentioned titanium dioxide preferably uses rutile type titanium white；The granular size of titanium dioxide is 200-500nm.
Above-mentioned dispersant preferably uses polyurethane-type or the macromolecule dispersing agent of polyacrylate.Above-mentioned dispersant is into one
Step preferably uses AFCONA 4010, AFCONA 4016, AFCONA 4060, AFCONA 4071, AFCONA4570 and AFCONA
Any one in 4595 or arbitrary several combination macromolecule dispersing agents.The dispersant is mainly used for stablizing titanium white dispersion,
It prevents particle from mutually assembling and settling, improves dispersion stabilization.
Above-mentioned antifoaming agent preferably uses modified dimethyl polysiloxane.
Above-mentioned wetting agent preferably uses polyester modification polyphosphate, carboxylic acid and polyamide polymer, modified polyorganosiloxane, height
Any one wetting agent in carboxylic acids alkyl salt or arbitrary several combination wetting agent.Above-mentioned wetting agent is further preferably adopted
With any one wetting agent in AFCONA-5010, AFCONA-5030, AFCONA-5065, AFCONA-5071 or arbitrary several
Combine wetting agent.The wetting agent is mainly used for reducing into surface of pigments tension, and enhancing water improves face to the effect of impregnation of pigment
Material dispersibility and anti-settling property.
Above-mentioned anti-settling agent preferably use in bentonite, silica and polyamide anti-settling agent any one or it is arbitrary several
Combination.The anti-settling agent mainly assigns the anti-settling of slurry, improves slurry storage stability.
A method of preparing aqueous titanium white mill base material using good pressure distribution technique, which is characterized in that above-mentioned can be prepared
Aqueous Titanium dioxide slurry is invented, is included the following steps：
A. according to material quality number ratio, by 1.3-4.0 parts of dispersant, 0.2-1 parts of antifoaming agent, 0.4-2 parts of wetting agent
It is added in container and is mixed with 26.5-52.6 parts of water, obtain mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 500-600r/min, according to material quality number ratio, to
It is slowly added to 45-65 parts of titanium dioxide in the mixed dispersant prepared in the step a, after titanium white powder is added, adjusts
Dispersing speed is saved to 1200-2000r/min, carries out pre-dispersed 15-30min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 50-100MPa pressure, into
Horizontal high voltage homogenous disperse 20-60min, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, the fineness of prefabricated Titanium dioxide slurry is examined, inspection is worked as
After qualification, according to material quality number ratio, anti-settling agent is added into the prefabricated Titanium dioxide slurry prepared in the step c
0.5-1.5 parts, it is then turned on dispersion machine, adjusting dispersing speed is 1500-2000r/min, and dispersion 5-20min to slurry is mixed
Uniformly, then mesh size size is used to be filtered to slurry not higher than the filter cloth of 300 mesh, obtains the water of uniform and stable dispersion
Property titanium white mill base.As currently preferred technical solution, after carrying out high-pressure homogeneous dispersion in the step c, utilize
Hegman grind gage examines the fineness of prefabricated Titanium dioxide slurry, and when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage：
1. the functional component dispensing of the aqueous Titanium dioxide slurry of the present invention is reasonable, the coating color of modest viscosity can be prepared
Slurry, condition is provided for subsequent applications；
2. high-pressure homogeneous technique is used for the preparation of titanium dioxide mill base by the present invention, obtained mill base is well dispersed, grain size divides
The titanium white dispersed paste that cloth is uniform, storage stability is excellent, preparation process is simple for process, easy to operate, environment friendly and pollution-free；
3. titanium white mill base of the present invention is applied to the coating mobility obtained in aqueous coating system and application property is good, it can
Preparation applied to aqueous architectural coating, woodcare paint, ceramic coating etc..
Specific implementation mode
Said program is described further below in conjunction with specific examples of the implementation, the preferred embodiment of the present invention is described in detail such as
Under：
Embodiment one
In the present embodiment, a kind of aqueous Titanium dioxide slurry adds up to 100 parts, by following according to the number of pulp components
The pulp components of mass fraction form：
In the present embodiment, above-mentioned titanium dioxide uses rutile type titanium white；The granular size of titanium dioxide is 200-
500nm.Above-mentioned dispersant uses 4010 macromolecule dispersing agents of AFCONA.The dispersant is mainly used for stablizing titanium white dispersion,
It prevents particle from mutually assembling and settling, improves dispersion stabilization.Above-mentioned antifoaming agent uses modified dimethyl polysiloxane.Above-mentioned profit
Humectant uses AFCONA-5010.The wetting agent is mainly used for reducing into surface of pigments tension, and enhancing water imitates the infiltration of pigment
Fruit improves pigment-dispersing and anti-settling property.Above-mentioned anti-settling agent uses bentonite.The anti-settling agent mainly assigns the anti-settling of slurry
Property, improve slurry storage stability.
In the present embodiment, a method of preparing aqueous titanium white mill base material using good pressure distribution technique, can prepare above-mentioned
Aqueous Titanium dioxide slurry, includes the following steps：
A. according to material quality number ratio, by 1.3 parts of 4010 macromolecule dispersing agents of AFCONA, modified polydimethyl silicon
52.3 parts of 0.3 part of oxygen alkane antifoaming agent, 0.5 part of AFCONA-5010 wetting agents and water are added in rustless steel container and are mixed, and obtain
To mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 500r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 45.0 parts of titanium dioxide in the mixed dispersant prepared in step a, titanium dioxide uses rutile type titanium white；Titanium white
The granular size of powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 1200r/min, carries out pre-
Disperse 20min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 60MPa pressure, is carried out high
Homogenous disperse 20min is pressed, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium dioxide slurry is examined using Hegman grind gage
The fineness of material, when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine, when after the assay was approved, according to material quality
0.8 part of bentonite anti-settling agent is added into the prefabricated Titanium dioxide slurry prepared in the step c, is then turned on for number ratio
Dispersion machine, adjusting dispersing speed are 1500r/min, and dispersion 10min to slurry is uniformly mixed, and then uses mesh size size
Filter cloth for 300 mesh is filtered slurry, obtains the aqueous titanium white mill base of uniform and stable dispersion.
In the present embodiment, dispersant prevents particle from mutually assembling and settling, improves dispersion for stablizing titanium white dispersion
Stability.For reducing into surface of pigments tension, enhancing water improves pigment-dispersing and prevents wetting agent to the effect of impregnation of pigment
Heavy property.Anti-settling agent assigns the anti-settling of slurry, improves slurry storage stability.The present embodiment preparation method is simple to operation,
Environment friendly and pollution-free, titanium white slurry obtained has the characteristics that favorable dispersibility, particle diameter distribution are uniform, storage time is long, can apply
In the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc., referring to table 1.
Embodiment two
The present embodiment and embodiment one are essentially identical, are particular in that：
In the present embodiment, a kind of aqueous Titanium dioxide slurry adds up to 100 parts, by following according to the number of pulp components
The pulp components of mass fraction form：
In the present embodiment, above-mentioned titanium dioxide uses rutile type titanium white；The granular size of titanium dioxide is 200-
500nm.Above-mentioned dispersant uses 4016 macromolecule dispersing agents of AFCONA.The dispersant is mainly used for stablizing titanium white dispersion,
It prevents particle from mutually assembling and settling, improves dispersion stabilization.Above-mentioned antifoaming agent uses modified dimethyl polysiloxane.Above-mentioned profit
Humectant uses AFCONA-5030.The wetting agent is mainly used for reducing into surface of pigments tension, and enhancing water imitates the infiltration of pigment
Fruit improves pigment-dispersing and anti-settling property.Above-mentioned anti-settling agent uses silica.The anti-settling agent mainly assigns the anti-settling of slurry
Drop property improves slurry storage stability.
In the present embodiment, a method of preparing aqueous titanium white mill base material using good pressure distribution technique, can prepare above-mentioned
Aqueous Titanium dioxide slurry, includes the following steps：
A. according to material quality number ratio, by 2.0 parts of 4016 macromolecule dispersing agents of AFCONA, modified polydimethyl silicon
46.2 parts of 0.4 part of oxygen alkane antifoaming agent, 0.6 part of AFCONA-5030 wetting agents and water are added in rustless steel container and are mixed, and obtain
To mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 500r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 50.0 parts of titanium dioxide in the mixed dispersant prepared in step a, titanium dioxide uses rutile type titanium white；Titanium white
The granular size of powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 1200r/min, carries out pre-
Disperse 20min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 60MPa pressure, is carried out high
Homogenous disperse 40min is pressed, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium dioxide slurry is examined using Hegman grind gage
The fineness of material, when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine, when after the assay was approved, according to material quality
0.8 part of silica anti-settling agent is added into the prefabricated Titanium dioxide slurry prepared in the step c, then opens for number ratio
Dispersion machine is opened, adjusting dispersing speed is 1500r/min, and dispersion 15min to slurry is uniformly mixed, and then uses mesh size ruler
Very little is that the filter cloth of 300 mesh is filtered slurry, obtains the aqueous titanium white mill base of uniform and stable dispersion.
In the present embodiment, dispersant prevents particle from mutually assembling and settling, improves dispersion for stablizing titanium white dispersion
Stability.For reducing into surface of pigments tension, enhancing water improves pigment-dispersing and prevents wetting agent to the effect of impregnation of pigment
Heavy property.Anti-settling agent assigns the anti-settling of slurry, improves slurry storage stability.The present embodiment preparation method is simple to operation,
Environment friendly and pollution-free, titanium white slurry obtained has the characteristics that favorable dispersibility, particle diameter distribution are uniform, storage time is long, can apply
In the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc., referring to table 1.
Embodiment three
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, a kind of aqueous Titanium dioxide slurry adds up to 100 parts, by following according to the number of pulp components
The pulp components of mass fraction form：
In the present embodiment, above-mentioned titanium dioxide uses rutile type titanium white；The granular size of titanium dioxide is 200-
500nm.Above-mentioned dispersant uses 4016 macromolecule dispersing agents of AFCONA.The dispersant is mainly used for stablizing titanium white dispersion,
It prevents particle from mutually assembling and settling, improves dispersion stabilization.Above-mentioned antifoaming agent uses modified dimethyl polysiloxane.Above-mentioned profit
Humectant uses AFCONA-5030.The wetting agent is mainly used for reducing into surface of pigments tension, and enhancing water imitates the infiltration of pigment
Fruit improves pigment-dispersing and anti-settling property.Above-mentioned anti-settling agent uses silica.The anti-settling agent mainly assigns the anti-settling of slurry
Drop property improves slurry storage stability.
In the present embodiment, a method of preparing aqueous titanium white mill base material using good pressure distribution technique, can prepare above-mentioned
Aqueous Titanium dioxide slurry, includes the following steps：
A. according to material quality number ratio, by 2.0 parts of 4016 macromolecule dispersing agents of AFCONA, modified polydimethyl silicon
46.2 parts of 0.4 part of oxygen alkane antifoaming agent, 0.6 part of AFCONA-5030 wetting agents and water are added in rustless steel container and are mixed, and obtain
To mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 500r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 50.0 parts of titanium dioxide in the mixed dispersant prepared in step a, titanium dioxide uses rutile type titanium white；Titanium white
The granular size of powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 1500r/min, carries out pre-
Disperse 30min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 80MPa pressure, is carried out high
Homogenous disperse 40min is pressed, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium dioxide slurry is examined using Hegman grind gage
The fineness of material, when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine, when after the assay was approved, according to material quality
0.8 part of silica anti-settling agent is added into the prefabricated Titanium dioxide slurry prepared in the step c, then opens for number ratio
Dispersion machine is opened, adjusting dispersing speed is 1500r/min, and dispersion 10min to slurry is uniformly mixed, and then uses mesh size ruler
Very little is that the filter cloth of 300 mesh is filtered slurry, obtains the aqueous titanium white mill base of uniform and stable dispersion.
In the present embodiment, dispersant prevents particle from mutually assembling and settling, improves dispersion for stablizing titanium white dispersion
Stability.For reducing into surface of pigments tension, enhancing water improves pigment-dispersing and prevents wetting agent to the effect of impregnation of pigment
Heavy property.Anti-settling agent assigns the anti-settling of slurry, improves slurry storage stability.The present embodiment preparation method is simple to operation,
Environment friendly and pollution-free, titanium white slurry obtained has the characteristics that favorable dispersibility, particle diameter distribution are uniform, storage time is long, can apply
In the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc., referring to table 1.
Example IV
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, a kind of aqueous Titanium dioxide slurry adds up to 100 parts, by following according to the number of pulp components
The pulp components of mass fraction form：
In the present embodiment, above-mentioned titanium dioxide uses rutile type titanium white；The granular size of titanium dioxide is 200-
500nm.Above-mentioned dispersant uses 4060 macromolecule dispersing agents of AFCONA.The dispersant is mainly used for stablizing titanium white dispersion,
It prevents particle from mutually assembling and settling, improves dispersion stabilization.Above-mentioned antifoaming agent uses modified dimethyl polysiloxane.Above-mentioned profit
Humectant uses AFCONA-5065.The wetting agent is mainly used for reducing into surface of pigments tension, and enhancing water imitates the infiltration of pigment
Fruit improves pigment-dispersing and anti-settling property.Above-mentioned anti-settling agent uses polyamide.The anti-settling agent mainly assigns the anti-settling of slurry
Property, improve slurry storage stability.
In the present embodiment, a method of preparing aqueous titanium white mill base material using good pressure distribution technique, can prepare above-mentioned
Aqueous Titanium dioxide slurry, includes the following steps：
A. according to material quality number ratio, by 2.5 parts of AFCONA4060 macromolecule dispersing agents, modified polydimethyl silica
40.3 parts of 0.4 part of alkane antifoaming agent, 0.8 part of AFCONA-5065 wetting agents and water are added in rustless steel container and are mixed, and obtain
Mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 600r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 55.0 parts of titanium dioxide in the mixed dispersant prepared in step a, titanium dioxide uses rutile type titanium white；Titanium white
The granular size of powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 1600r/min, carries out pre-
Disperse 30min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 100MPa pressure, is carried out high
Homogenous disperse 30min is pressed, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium dioxide slurry is examined using Hegman grind gage
The fineness of material, when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine, when after the assay was approved, according to material quality
1.0 parts of polyamide anti-settling agent is added into the prefabricated Titanium dioxide slurry prepared in the step c, is then turned on for number ratio
Dispersion machine, adjusting dispersing speed are 1800r/min, and dispersion 20min to slurry is uniformly mixed, and then uses mesh size size
Filter cloth for 300 mesh is filtered slurry, obtains the aqueous titanium white mill base of uniform and stable dispersion.
In the present embodiment, dispersant prevents particle from mutually assembling and settling, improves dispersion for stablizing titanium white dispersion
Stability.For reducing into surface of pigments tension, enhancing water improves pigment-dispersing and prevents wetting agent to the effect of impregnation of pigment
Heavy property.Anti-settling agent assigns the anti-settling of slurry, improves slurry storage stability.The present embodiment preparation method is simple to operation,
Environment friendly and pollution-free, titanium white slurry obtained has the characteristics that favorable dispersibility, particle diameter distribution are uniform, storage time is long, can apply
In the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc., referring to table 1.
Embodiment five
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, a kind of aqueous Titanium dioxide slurry adds up to 100 parts, by following according to the number of pulp components
The pulp components of mass fraction form：
In the present embodiment, above-mentioned titanium dioxide uses rutile type titanium white；The granular size of titanium dioxide is 200-
500nm.Above-mentioned dispersant uses AFCONA4010 macromolecule dispersing agents.The dispersant is mainly used for stablizing titanium white dispersion,
It prevents particle from mutually assembling and settling, improves dispersion stabilization.Above-mentioned antifoaming agent uses modified dimethyl polysiloxane.Above-mentioned profit
Humectant uses AFCONA-5010.The wetting agent is mainly used for reducing into surface of pigments tension, and enhancing water imitates the infiltration of pigment
Fruit improves pigment-dispersing and anti-settling property.Above-mentioned anti-settling agent uses bentonite.The anti-settling agent mainly assigns the anti-settling of slurry
Property, improve slurry storage stability.
In the present embodiment, a method of preparing aqueous titanium white mill base material using good pressure distribution technique, can prepare above-mentioned
Aqueous Titanium dioxide slurry, includes the following steps：
A. according to material quality number ratio, by 3.0 parts of AFCONA4010 macromolecule dispersing agents, modified polydimethyl silica
33.8 parts of 0.5 part of alkane antifoaming agent, 1.2 parts of AFCONA-5010 wetting agents and water are added in rustless steel container and are mixed, and obtain
Mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 600r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 60.0 parts of titanium dioxide in the mixed dispersant prepared in step a, titanium dioxide uses rutile type titanium white；Titanium white
The granular size of powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 1800r/min, carries out pre-
Disperse 25min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 80MPa pressure, is carried out high
Homogenous disperse 40min is pressed, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium dioxide slurry is examined using Hegman grind gage
The fineness of material, when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine, when after the assay was approved, according to material quality
1.5 parts of bentonite anti-settling agent is added into the prefabricated Titanium dioxide slurry prepared in the step c, is then turned on for number ratio
Dispersion machine, adjusting dispersing speed are 1800r/min, and dispersion 15min to slurry is uniformly mixed, and then uses mesh size size
Filter cloth for 300 mesh is filtered slurry, obtains the aqueous titanium white mill base of uniform and stable dispersion.
In the present embodiment, dispersant prevents particle from mutually assembling and settling, improves dispersion for stablizing titanium white dispersion
Stability.For reducing into surface of pigments tension, enhancing water improves pigment-dispersing and prevents wetting agent to the effect of impregnation of pigment
Heavy property.Anti-settling agent assigns the anti-settling of slurry, improves slurry storage stability.The present embodiment preparation method is simple to operation,
Environment friendly and pollution-free, titanium white slurry obtained has the characteristics that favorable dispersibility, particle diameter distribution are uniform, storage time is long, can apply
In the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc., referring to table 1.
Comparative example one：
In this comparative example, a kind of titanium white slurry adds up to 100 parts, by following mass parts according to the number of pulp components
Several pulp components compositions：
In this comparative example, a method of titanium white slurry is prepared, above-mentioned titanium white slurry is prepared using good pressure distribution technique, is wrapped
Include following steps：
A. according to material quality number ratio, by 5.0 parts of 4010 macromolecule dispersing agents of AFCONA, modified polydimethyl silicon
20.0 parts of 1.0 parts of oxygen alkane antifoaming agent, 2.0 parts of AFCONA-5010 wetting agents and water are added in rustless steel container and are mixed, and obtain
To mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 1000r/min, according to material quality number ratio, Xiang
70.0 parts of titanium dioxide is slowly added in the mixed dispersant prepared in the step a, titanium dioxide uses rutile type titanium white；Titanium
The granular size of white powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 2200r/min, carries out
Pre-dispersed 40min obtains mixed slurry until slurry is uniformly mixed；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 120MPa pressure, is carried out high
Homogenous disperse 70min is pressed, to obtain Titanium dioxide slurry, since slurry viscosity is excessive, mobility is bad, there are a large amount of precipitations and hard
Block.
In this comparative example, after carrying out high-pressure homogeneous dispersion in the step c, examined using Hegman grind gage pre-
The fineness of Titanium dioxide slurry processed examines prefabricated 35 μm of Titanium dioxide slurry fineness >.Continue that bentonite is added into Titanium dioxide slurry
2.0 parts of anti-settling agent is then turned on dispersion machine, and adjusting dispersing speed is 2500r/min, disperses 30min, due to titanium white powder content
Excessive, slurry fluidity improves limited, it is difficult to be filtered, obtain that titanium white mill base mobility is bad, and viscosity is big, there have to be a large amount of heavy
Shallow lake and lump.
Comparative example two
This comparative example and comparative example one are essentially identical, are particular in that：
In this comparative example, a kind of titanium white slurry adds up to 100 parts, by following mass parts according to the number of pulp components
Several pulp components compositions：
In this comparative example, a method of titanium white slurry is prepared, above-mentioned titanium white slurry is prepared using basket-type grinder, is wrapped
Include following steps：
A. according to material quality number ratio, by 3.0 parts of 4010 macromolecule dispersing agents of AFCONA, modified polydimethyl silicon
33.8 parts of 0.5 part of oxygen alkane antifoaming agent, 1.2 parts of AFCONA-5010 wetting agents and water are added in rustless steel container and are mixed, and obtain
To mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 600r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 60.0 parts of titanium dioxide in the mixed dispersant prepared in step a, titanium dioxide uses rutile type titanium white；Titanium white
The granular size of powder is 200-500nm, after titanium white powder is added, adjusts dispersing speed to 1800r/min, carries out pre-
Disperse 25min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in basket-type grinder, grinds 40min, it is pre- to obtain
Titanium dioxide slurry processed；
D. after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium dioxide slurry is examined using Hegman grind gage
The fineness of material, when examining prefabricated Titanium dioxide slurry fineness to be 35 μm, then according to material quality number ratio, in the step
1.5 parts of bentonite anti-settling agent is added in the prefabricated Titanium dioxide slurry prepared in c, is then turned on dispersion machine, adjusts dispersing speed
For 1800r/min, dispersion 15min to slurry is uniformly mixed, then use mesh size size for the filter cloth of 300 mesh to slurry into
Row filtering, obtains titanium white mill base.
The aqueous titanium white slurry main performance being prepared in above-described embodiment and comparative example two is according to concerned countries mark
Standard is tested, and test result is as follows shown in table 1：
Aqueous titanium white slurry main performance testing result comparison is prepared in 1. the above embodiment of the present invention of table and comparative example two
Table
Specific test result is as shown in upper table 1：The above-mentioned implementation of the present invention is can be seen that according to test result in upper table 1
Using high-pressure homogeneous technique, this device prepares titanium white mill base to example, and the titanium white mill base of the especially preparation of two~embodiment of embodiment five has
There is good storage stability, by storage test in 30 days, slurry did not occurred settling, returns thick phenomenon.Compared to embodiment two~
Embodiment five, although the titanium dioxide amount that embodiment one uses is few, the water of use is more, due to using dispersant, antifoaming agent, wetting
Agent and anti-settling agent related auxiliaries amount are less, limited to the dispersibility of titanium white mill base, obtain the storage that titanium white mill base passes through 30 days
Experiment has slight sedimentation to occur, but bottom there is no lump to generate, and illustrates that dispersant, antifoaming agent, wetting agent are related to anti-settling agent and helps
Agent will be unable to realize less than the dosage set, the preparation of the aqueous Titanium dioxide slurry of the present invention.But comparative example two uses basket grinding
Slurry made from machine has apparent sedimentation, hard caking phenomenon.The above embodiment of the present invention has the beneficial effect that：Creatively by high pressure
Homogeneous technology introduces the preparation of titanium dioxide mill base, and obtained well dispersed, particle diameter distribution is uniform, the good color of storage stability
Slurry, can be applied to the preparation of aqueous architectural coating, woodcare paint, ceramic coating etc..
It is above-mentioned that the embodiment of the present invention is illustrated, but the present invention is not limited to the above embodiments, it can also be according to this hair
The purpose of bright innovation and creation makes a variety of variations, and that is done under the Spirit Essence and principle of all technical solutions according to the present invention changes
Become, modification, substitute, combination or simplified, should be equivalent substitute mode, as long as meeting the goal of the invention of the present invention, as long as not
The technical principle of the method for aqueous titanium white mill base material is prepared away from the aqueous Titanium dioxide slurry of the present invention and using good pressure distribution technique
And inventive concept, belong to protection scope of the present invention.
Claims (10)
1. a kind of aqueous Titanium dioxide slurry, which is characterized in that 100 parts are added up to according to the number of pulp components, by following quality
The pulp components of number form：
2. aqueous Titanium dioxide slurry according to claim 1, it is characterised in that：100 are added up to according to the number of pulp components
Part, it is made of the pulp components of following mass fraction：
3. aqueous Titanium dioxide slurry according to claim 1, it is characterised in that：The titanium dioxide uses rutile titanium dioxide
Powder；The granular size of titanium dioxide is 200-500nm.
4. aqueous Titanium dioxide slurry according to claim 1, it is characterised in that：The dispersant uses polyurethane-type or poly- third
The macromolecule dispersing agent of olefin(e) acid ester type.
5. aqueous Titanium dioxide slurry according to claim 1, it is characterised in that：The antifoaming agent uses modified polydimethyl silicon
Oxygen alkane.
6. aqueous Titanium dioxide slurry according to claim 1, it is characterised in that：The wetting agent uses polyester modification polyphosphoric acid
Ester, carboxylic acid and polyamide polymer, modified polyorganosiloxane, any one wetting agent in polymeric carboxylic alkyl salt or arbitrary several
The combination wetting agent of kind.
7. aqueous Titanium dioxide slurry according to claim 1, it is characterised in that：The anti-settling agent is using bentonite, titanium dioxide
Any one in silicon and polyamide anti-settling agent or arbitrary several combinations.
8. according to any one of claim 1~7 aqueous Titanium dioxide slurry, it is characterised in that：The dispersant uses
Appointing in AFCONA 4010, AFCONA 4016, AFCONA 4060, AFCONA 4071, AFCONA4570 and AFCONA 4595
It anticipates a kind of or arbitrary several combination macromolecule dispersing agents；Or the wetting agent using AFCONA-5010, AFCONA-5030,
Any one wetting agent in AFCONA-5065, AFCONA-5071 or arbitrary several combination wetting agents.
9. a kind of method preparing aqueous titanium white mill base material using good pressure distribution technique, which is characterized in that claim 1 can be prepared
The aqueous Titanium dioxide slurry, includes the following steps：
A. according to material quality number ratio, by 1.3-4.0 parts of dispersant, 0.2-1.0 parts of antifoaming agent, 0.4-2.0 parts of wetting agent
It is added in container and is mixed with 26.5-52.6 parts of water, obtain mixed dispersant；
B. dispersion machine is opened, adjusting dispersion machine initial speed is 500-600r/min, according to material quality number ratio, Xiang Suo
It states and is slowly added to 45-65 parts of titanium dioxide in the mixed dispersant prepared in step a, after titanium white powder is added, adjusts and divide
Machine rotating speed is dissipated to 1200-2000r/min, carries out pre-dispersed 15-30min, until slurry is uniformly mixed, obtains mixed slurry；
C. the mixed slurry prepared in the step b is transferred in high pressure homogenizer, under 50-100MPa pressure, is carried out high
Homogenous disperse 20-60min is pressed, to obtain prefabricated Titanium dioxide slurry；
D. after carrying out high-pressure homogeneous dispersion in the step c, the fineness of prefabricated Titanium dioxide slurry is examined, it is qualified when examining
Afterwards, according to material quality number ratio, anti-settling agent 0.5- is added into the prefabricated Titanium dioxide slurry prepared in the step c
1.5 parts, it is then turned on dispersion machine, adjusting dispersing speed is 1500-2000r/min, and dispersion 5-20min is equal to slurry mixing
It is even, then mesh size size is used to be filtered to slurry not higher than the filter cloth of 300 mesh, obtains the aqueous of uniform and stable dispersion
Titanium white mill base.
10. the method for utilizing good pressure distribution technique to prepare aqueous titanium white mill base material according to claim 9, it is characterised in that：
In the step d, after carrying out high-pressure homogeneous dispersion in the step c, prefabricated titanium white is examined using Hegman grind gage
The fineness of slurry material, when examining prefabricated Titanium dioxide slurry fineness≤35 μm, that is, it is qualified to examine.
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| CN110804903A (en) * | 2019-10-25 | 2020-02-18 | 杭州博思特装饰材料有限公司 | Coating glue solution for decorative paper and preparation method thereof |
| CN111518430A (en) * | 2020-05-13 | 2020-08-11 | 常州雅美特窗饰股份有限公司 | Method for improving dispersion of powder in slurry |
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Application publication date: 20181102 |