CN113600044A - Preparation method of stone needle composite dispersion liquid and product thereof - Google Patents
Preparation method of stone needle composite dispersion liquid and product thereof Download PDFInfo
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Abstract
The invention discloses a preparation method of a stone needle powder dispersion liquid, which adopts a physical/chemical combination method and mixes oil phase components and an emulsifier according to a certain addition ratio in an oil phase system; adding a dispersion stabilizer, a surfactant and stone needle powder into water according to a certain addition ratio in an aqueous dispersion system for mixing; after the two phases are respectively mixed uniformly and heated to a certain temperature, the stone needle powder, the dispersant and the solvent can reach a stable emulsion dispersion system on a micro scale by adopting a telecentric separation technology. The stone needle dispersion prepared by the method has high dispersion and high stability; in the dispersion liquid, the stone needle powder is suspended in the solution in a monodispersed form; the composite dispersion liquid is placed for more than 60 days, and the composite dispersion liquid does not generate layering, emulsion breaking or agglomeration; the stone needle dispersion can be widely applied to the fields of health care and medical treatment, beauty industry, clothing fiber and the like. In addition, the preparation method is simple and convenient to operate, wide in parameter adjustable range, low in energy consumption and short in period, and is suitable for pilot scale and industrial mass production.
Description
Technical Field
The invention relates to a preparation method of a stone needle powder dispersion liquid and a product.
Background
Stone needles are known as magical stones and also as disease-treatable stones. An extremely precious rock variety with very little reserve is a microcrystalline limestone with calcium carbonate as the main chemical component. The microcrystalline limestone is mostly used as a traditional Chinese medicine physical therapy appliance, a health care product and the like, has no radioactivity and is harmless to a human body; the stone needle has a strange energy field, can generate infrared rays and ultrasonic waves when acting on a human body and can run along the channels, contacts the epidermis of the human body, and can clearly see the state of the accelerated flow of blood in small blood vessels and capillary vessels on a screen of a monitor of a microcirculation detector. Has effects in balancing body pH, promoting blood circulation, improving sub-health, caring skin, and promoting health. Therefore, stone needles are often used in health care and medical and cosmetic industries, but are less used in textile socks.
However, in the practical application process of the stone needle powder, the stone needle powder is easy to agglomerate due to the characteristics of large specific surface area, large specific surface energy and the like; on the other hand, the stone needle has strong surface polarity and is not easy to be uniformly dispersed in an organic medium, so that the exertion of the effect is greatly limited. Therefore, the dispersion and surface modification of the stone needle powder become necessary treatment means before the stone needle powder is applied to a matrix.
Dispersion is a technique of reducing aggregates of dry powder particles in various forms in a specific liquid medium (e.g., water) by various principles, methods, and means to form primary particles, and stably and uniformly distributing the primary particles in the medium. However, the various surface modification and dispersion techniques currently used are not mature and the dispersion effect achieved is not ideal. Particularly, when the dispersion is carried out in an aqueous medium, the particles are not stably and uniformly dispersed in the aqueous medium and thus a stable suspension cannot be formed; the dispersion liquid is easy to be demulsified, layered and even agglomerated by solid matters. Certain dispersion liquid can achieve better dispersion effect, but certain toxic and harmful or environment-unfriendly additives are added, so that the application range of the dispersion liquid is limited; or certain expensive additive components are added, so that the cost of the whole product is high, and the market competitiveness is weak; or the technical means is more complicated, and the method can only be limited to laboratory-scale small-scale preparation and cannot realize industrialized large-scale production.
Generally, the method of powder dispersion can be classified into physical dispersion and chemical dispersion. The physical dispersion includes a high-speed stirring method using a high-speed shear disperser, a grinding dispersion method, a high-energy mechanical ball milling dispersion method, an ultrasonic dispersion method, a high-energy mechanochemical method, a high-energy treatment method and the like. The high-speed stirring method, the grinding dispersion method and the high-energy mechanical ball milling dispersion method are all mechanical energy such as external shearing force or impact force, and the particles are fully dispersed in a medium. The ultrasonic dispersion method weakens the nano-function energy among the nano-particles by means of the huge energy of ultrasonic waves so as to fully disperse the nano-function energy. For example, CeO having a primary particle size of 20nm is dispersed by ultrasonic dispersion2Dispersing in alcohol water solution with volume ratio of 1:1, and obtaining nanometer CeO with average particle size of 57.87nm under the conditions of ultrasonic frequency of 68kHz, power of 500W and ultrasonic time of 30min2And (3) dispersing the mixture. Zhao research and the like researches the conditions of ball milling time, ball-material ratio, ball mill rotating speed and the like on the nano alpha-Al2O3The influence of the dispersibility of the powder in the aqueous medium is finally realized, and the alpha-Al with good dispersibility is prepared under the conditions of ball milling time of 9 h, ball-to-material ratio of 15:1 and ball mill rotation speed of 500 r/min2O3An aqueous dispersion. The chemical dispersion method includes a coupling agent method, an esterification reaction method, and a dispersant dispersion method. The coupling agent method and the esterification reaction method actually achieve the purpose of particle dispersion by adding a chemical treatment agent and carrying out chemical reaction with the surface of the powder to carry out surface modification on the powder. In the dispersing agent dispersion method, the dispersing agent is generally not directly chemically reacted with the particles, but is adsorbed on the surface of the particles by the dispersing agent, and the dispersing effect is achieved by the stabilization effect of electrostatic stabilization and steric hindrance. How to prepare nano TiO with the average grain diameter of about 100nm by using silane coupling agent KH550 as a surface modifier and adopting a coupling agent method for small jade and the like2The dispersion is added into epoxy resin to prepare the epoxy coating with excellent dispersion performance, strong adhesive force and flexibilityAnd (5) feeding. The Wangxiang red and the like take the Tween 80 as a dispersant to prepare the nano-diamond dispersion liquid with good dispersibility. The nano-diamond particle size in the system is concentrated in the range of 13.2-20.9 nm, the dispersion liquid has very good stability, and the dispersion liquid can still keep good dispersibility after being placed for 18 months. Although physical methods can achieve good dispersion of particles in a liquid medium by mechanical action, once external force stops, particles are re-agglomerated due to van der waals force and the like. In the case of the chemical dispersion method, since the surface properties of the particles are changed, the dispersed particles can be stably maintained in a liquid phase medium by static electricity and steric hindrance effects. Therefore, in an actual process, physical dispersion and chemical dispersion are generally combined, and the powder is dispersed by a physical means, while the dispersed powder can be kept stable for a long time by a chemical method, and meanwhile, the wetting effect of particles can be increased by adding the chemical treatment agent, so that the dispersion effect and efficiency of the physical method are promoted, and finally, a better dispersion effect is achieved. Such as dolantin, are used simultaneously with surfactants and high speed mechanical agitation to prepare nanoparticle dispersions. The experimental result shows that the powder dispersion liquid prepared by simultaneously using the surfactant and the mechanical stirring method has a better dispersion effect than the powder dispersion liquid prepared by only adopting the mechanical stirring method.
Although the above dispersion technologies can achieve a good dispersion effect in a laboratory, the above dispersion technologies still have the disadvantages of too low dispersion efficiency, too single dispersion method, low dispersion stability, no mass production, and the like. By controlling the nano dispersion technology, a set of novel dispersion technology which is efficient, environment-friendly and suitable for market demands is developed by combining other high and new technologies such as a telecentric separation technology and the like on the basis of the traditional grinding dispersion. By the technology, the nano particle dispersion liquid with small particle size, uniform particle size distribution and small stability can be efficiently and quickly prepared.
Disclosure of Invention
The invention aims to provide a preparation method of a stone needle composite dispersion liquid.
Yet another object of the present invention is to: provides a stone needle composite dispersion liquid product prepared by the method.
The purpose of the invention is realized by the following scheme: a preparation method of stone needle composite dispersion adopts a physical/chemical combination method, and oil phase components and an emulsifier are mixed in an oil phase system according to a certain addition ratio; adding a dispersion stabilizer, a surfactant and stone needle powder into water according to a certain addition ratio in an aqueous dispersion system for mixing; after the two phases are respectively mixed uniformly and heated to a certain temperature, the stone needle powder, the dispersant and the solvent can reach a stable emulsion dispersion system on a micro scale by adopting a telecentric separation technology, and the method comprises the following steps:
(1) the raw material ratio is as follows: phase A, 5-35 g of oil phase component and 3-25 g of emulsifier; phase B, 5-40 g of dispersion stabilizer (1%), 2-10 g of surfactant, 50-300 g of stone needle powder and 1000 g of purified water;
(2) the preparation method comprises the following steps:
firstly, preparing a dispersion stabilizer into a 1% dispersion stabilizer solution for later use;
mixing the oil phase components and the emulsifier according to the addition amount in the table in a container A, heating to 50-100 ℃, stirring while heating to fully melt the components to form a uniform and transparent liquid oil phase system to obtain a stable phase A; at the same time, the user can select the desired position,
adding 1% of dispersion stabilizer solution and surfactant into water in a container B, stirring to form a mixed micelle dispersion system, then adding stone needle powder, heating to 30-100 ℃, and stirring while heating to form a slurry phase B with good dispersibility; after that time, the user can use the device,
under the condition of rapid stirring, adding the phase A at 50-100 ℃ into the phase B at 30-100 ℃, adopting a telecentric separation technology to replace the traditional grid technology, so that the stone needle powder, the dispersing agent and the solvent reach high dispersion and high stability on a microscopic scale, finally forming the stone needle composite dispersion liquid with high solid content of 10% -30%, naturally cooling to room temperature, suspending the stone needle particles in the solution in a monodispersed form, and obtaining the stone needle composite dispersion liquid which can not generate the phenomena of layering, emulsion breaking or caking after being placed for more than 60 days.
The oil phase component has a carbon chain length of C10~C26Or one of the derivatives of the alcohols, carboxylic acids and carboxylic esters of the above alkanes, alkenes or alkynes, or a combination thereof.
The emulsifier is one of tween and span surfactants or any combination of the substances.
The dispersion stabilizer is one or the combination of polyvinyl alcohol and derivatives thereof, polyvinylpyrrolidone and derivatives thereof, cellulose and derivatives thereof, water-soluble chitosan and derivatives thereof, polyethylene glycol and carbomer.
The surfactant has a carbon chain length of C10~C26Sodium sulfate, sodium sulfonate, sulfate ester salt, polyoxyethylene ether sulfate, or their combination.
In each component, the addition amounts of the oil phase component, the emulsifier, the dispersion stabilizer and the surfactant are in positive correlation with each other; the addition amounts of the oil phase component, the emulsifier, the dispersion stabilizer and the surfactant are in negative correlation with the addition amount of the stone needle powder.
The invention provides a stone needle composite dispersion liquid which is prepared according to any one of the methods.
According to the invention, the dispersion stabilizer is adopted to carry out surface coating and modification on the stone needle, and the surfactant and the emulsifier are used to carry out emulsification and dispersion on the whole system, so that stone needle powder particles can be stably and uniformly dispersed in an aqueous medium to form a very stable composite system. The particles of the stone needle composite dispersion prepared by the method are suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered, demulsified or agglomerated after being placed for more than 60 days. The composite dispersion liquid uses nontoxic and harmless environment-friendly additive components, and has low cost and wide application range. In addition, the preparation method is simple and convenient to operate, wide in parameter adjustable range, low in energy consumption and short in period, and is suitable for pilot scale and industrial mass production.
Drawings
FIG. 1: scanning electron microscope photographs of the stone needle powder used in example 2 before dispersion;
FIG. 2: scanning electron micrographs of the dispersed stone needle powder used in example 2.
Detailed Description
The invention is further illustrated by the following examples, which are intended only for a better understanding of the contents of the invention. The examples given therefore do not limit the scope of the invention.
Example 1
A stone needle composite dispersion liquid adopts a physical/chemical combination method, and oil phase components and an emulsifier are mixed in an oil phase system according to a certain addition ratio; adding a dispersion stabilizer, a surfactant and stone needle powder into water according to a certain addition ratio in an aqueous dispersion system for mixing; after the two phases are respectively mixed uniformly and heated to a certain temperature, the stone needle powder, the dispersant and the solvent can reach a stable emulsion dispersion system on a micro scale by adopting a telecentric separation technology, and the preparation method comprises the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the stone needle composite dispersion, the dispersion with the stone needle content of 10% is prepared from the following raw materials in proportion as follows:
(2) the preparation method comprises the following steps: before preparation, carbomer is prepared into a 1% solution for later use;
mixing stearic acid and tween-80 according to the addition amount in the table in a container A, heating to 80 ℃, stirring while heating to fully melt the stearic acid and tween-80 to form a uniform and transparent liquid; at the same time, the user can select the desired position,
in a container B, adding carbomer (1%) and sodium dodecyl sulfate into water, stirring to form a uniform solution, then adding stone needle powder, heating to 70 ℃, and stirring while heating to form a slurry phase B with good dispersibility; after that time, the user can use the device,
adding the phase A at 80 ℃ into the phase B at 70 ℃ under rapid stirring, then carrying out homogenization treatment for 2 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The stone needle composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Example 2
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the stone needle composite dispersion, the dispersion with the stone needle content of 15% is prepared from the following raw materials in proportion as follows:
(2) the preparation method comprises the following steps:
before preparation, carbomer is prepared into a 1% solution for later use;
mixing stearic acid and tween-80 according to the addition amount in the table in a container A, heating to 80 ℃, stirring while heating to fully melt the stearic acid and tween-80 to form a uniform and transparent liquid state to obtain a phase A; at the same time, the user can select the desired position,
adding carbomer (1%) and sodium dodecyl sulfate into water in a container B, stirring to form a uniform solution, adding stone needle powder, heating to 80 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding the phase A at 80 ℃ into the phase B at 80 ℃ under rapid stirring, then carrying out homogenization treatment for 3 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The stone needle composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
The scanning electron microscope photograph of the stone needle powder before dispersion is shown in figure 1, and the particle size of the stone needle powder before dispersion is 50 nm; the scanning electron microscope photograph of the dispersed stone needle powder is shown in figure 2, and the particle size of the dispersed stone needle powder is 20 nm.
Example 3
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, a dispersion with the stone needle content of 20% is prepared, and the adopted raw materials and the proportion are shown in the following table:
(2) the preparation method comprises the following steps:
before preparation, carbomer is prepared into a 1% solution for later use;
mixing stearic acid and tween-80 according to the addition amount in the table in a container A, heating to 90 ℃, stirring while heating to fully melt the stearic acid and tween-80 to form a uniform and transparent liquid state to obtain a phase A; at the same time, the user can select the desired position,
adding carbomer (1%) and sodium dodecyl sulfate into water in a container B, stirring to form a uniform solution, adding stone needle powder, heating to 80 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding phase A at 90 ℃ into phase B at 80 ℃ under rapid stirring, homogenizing for 4 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The stone needle composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Example 4
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, a dispersion with stone needle content of 25% is prepared, and the adopted raw materials and the proportion are shown in the following table:
(2) the preparation method comprises the following steps:
before preparation, carbomer is prepared into a 1% solution for later use;
mixing stearic acid and tween-80 according to the addition amount in the table in a container A, heating to 100 ℃, stirring while heating to fully melt the stearic acid and tween-80 to form a uniform and transparent liquid state to obtain a phase A; at the same time, the user can select the desired position,
adding carbomer (1%) and sodium dodecyl sulfate into water in a container B, stirring to form a uniform solution, adding stone needle powder, heating to 90 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding phase A at 100 ℃ into phase B at 90 ℃ under rapid stirring, homogenizing for 5 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The stone needle composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and demulsified after being placed for more than 60 days.
Example 5
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, a dispersion with the stone needle content of 10% is prepared, and the adopted raw materials and the proportion are shown in the following table:
(2) the preparation method comprises the following steps: before preparation, polyvinylpyrrolidone is prepared into 1% solution for later use; during the preparation process, the raw materials are mixed,
mixing palmitic acid and span-60 according to the addition amount in the table in a container A, heating to 80 ℃, stirring while heating to fully melt the palmitic acid and span-60 to form a uniform and transparent liquid state, and obtaining a phase A; at the same time, the user can select the desired position,
in a container B, adding polyvinylpyrrolidone (1%) and sodium dodecyl sulfate into water, stirring to form a uniform solution, then adding stone needle powder, heating to 80 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding the phase A at 80 ℃ into the phase B at 80 ℃ under rapid stirring, then carrying out homogenization treatment for 2 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The stone needle composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Example 6
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, a dispersion with the stone needle content of 15% is prepared, and the adopted raw materials and the proportion are shown in the following table:
(2) the preparation method comprises the following steps:
before preparation, polyvinylpyrrolidone is prepared into 1% solution for later use;
during preparation, in a container A, mixing palmitic acid and span-60 according to the addition amount in the table, heating to 90 ℃, stirring while heating to fully melt the palmitic acid and span-60 to form a uniform and transparent liquid state, and obtaining a phase A; at the same time, the user can select the desired position,
in a container B, adding polyvinylpyrrolidone (1%) and sodium dodecyl sulfate into water, stirring to form a uniform solution, then adding stone needle powder, heating to 80 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding phase A at 90 ℃ into phase B at 80 ℃ under rapid stirring, homogenizing for 3 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Example 7
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, a dispersion with stone needle content of 25% is prepared, and the adopted raw materials and the proportion are shown in the following table:
(2) the preparation method comprises the following steps: before preparation, polyvinylpyrrolidone is prepared into 1% solution for later use;
during preparation, in a container A, mixing palmitic acid and span-60 according to the addition amount in the table, heating to 100 ℃, stirring while heating to fully melt the palmitic acid and span-60 to form a uniform and transparent liquid state, and obtaining a phase A; at the same time, the user can select the desired position,
in a container B, adding polyvinylpyrrolidone (1%) and sodium dodecyl sulfate into water, stirring to form a uniform solution, then adding stone needle powder, heating to 90 ℃, and stirring while heating to form slurry with good dispersibility; after that time, the user can use the device,
adding phase A at 100 ℃ into phase B at 90 ℃ under rapid stirring, homogenizing for 4 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Example 8
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, a dispersion with the stone needle content of 5% is prepared, and the adopted raw materials and the proportion are shown in the following table:
(2) the preparation method comprises the following steps:
before preparation, sodium carboxymethylcellulose is prepared into a 1% solution for later use;
during preparation, in a container A, the glyceryl stearate and the tween-80 are mixed according to the addition amount in the table, heated to 100 ℃, stirred while being heated, and fully melted to form a uniform and transparent liquid state, thus obtaining a phase A; at the same time, the user can select the desired position,
in a container B, adding sodium carboxymethylcellulose (1%) and sodium dodecyl polyoxyethylene ether sulfate into water, stirring to form a uniform solution, adding stone needle powder, heating to 80 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding phase A at 100 ℃ into phase B at 80 ℃ under rapid stirring, homogenizing for 1 minute by using a high-speed homogenizer, and naturally cooling to room temperature.
The composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Example 9
A stone needle composite dispersion, similar to example 1, was prepared by the following steps:
(1) the raw material ratio is as follows: based on 1 kg of the composite dispersion, the dispersion with the stone needle content of 30% is prepared from the following raw materials in proportion as follows:
(2) the preparation method comprises the following steps:
before preparation, sodium carboxymethylcellulose is prepared into a 1% solution for later use;
during preparation, in a container A, mixing oleic acid and span-60 according to the addition amount in the table, heating to 90 ℃, stirring while heating to fully melt the mixture to form a uniform and transparent liquid state to obtain a phase A; at the same time, the user can select the desired position,
in a container B, adding sodium carboxymethylcellulose (1%) and sodium dodecyl polyoxyethylene ether sulfate into water, stirring to form a uniform solution, adding stone needle powder, heating to 80 ℃, and stirring while heating to form slurry with good dispersibility to obtain a phase B; after that time, the user can use the device,
adding phase A at 90 ℃ into phase B at 80 ℃ under rapid stirring, then carrying out homogenization treatment for 6 minutes by using a high-speed homogenizer, and naturally cooling to room temperature.
The composite dispersion prepared by the method is suspended in the solution in a monodispersed form; the composite dispersion liquid can not be layered and agglomerated after being placed for more than 60 days.
Claims (7)
1. A preparation method of a stone needle composite dispersion liquid is characterized in that a physical/chemical combination method is adopted, and oil phase components and an emulsifier are mixed according to a certain addition ratio in an oil phase system; adding a dispersion stabilizer, a surfactant and stone needle powder into water according to a certain addition ratio in an aqueous dispersion system for mixing; after the two phases are respectively mixed uniformly and heated to a certain temperature, the stone needle powder, the dispersant and the solvent can reach a stable emulsion dispersion system on a micro scale by adopting a telecentric separation technology, and the method comprises the following steps:
(1) the raw material ratio is as follows: phase A, 5-35 g of oil phase component and 3-25 g of emulsifier; phase B, 5-40 g of dispersion stabilizer (1%), 2-10 g of surfactant, 50-300 g of stone needle powder and 1000 g of purified water;
(2) the preparation method comprises the following steps:
firstly, preparing a dispersion stabilizer into a 1% dispersion stabilizer solution for later use;
mixing the oil phase components and the emulsifier according to the addition amount in the table in a container A, heating to 50-100 ℃, stirring while heating to fully melt the components to form a uniform and transparent liquid oil phase system to obtain a stable phase A; at the same time, the user can select the desired position,
adding 1% of dispersion stabilizer solution and surfactant into water in a container B, stirring to form a mixed micelle dispersion system, then adding stone needle powder, heating to 30-100 ℃, and stirring while heating to form a slurry phase B with good dispersibility; after that time, the user can use the device,
under the condition of rapid stirring, adding the phase A at 50-100 ℃ into the phase B at 30-100 ℃, adopting a telecentric separation technology to replace the traditional grid technology, so that the stone needle powder, the dispersing agent and the solvent reach high dispersion and high stability on a microscopic scale, finally forming the stone needle composite dispersion liquid with high solid content of 10% -30%, naturally cooling to room temperature, suspending the stone needle particles in the solution in a monodispersed form, and obtaining the stone needle composite dispersion liquid which can not generate the phenomena of layering, emulsion breaking or caking after being placed for more than 60 days.
2. The method for preparing the stone needle composite dispersion according to claim 1, wherein the oil phase component has a carbon chain length of C10~C26Or one of the derivatives of the alcohols, carboxylic acids and carboxylic esters of the above alkanes, alkenes or alkynes, or a combination thereof.
3. The method for preparing the stone needle composite dispersion liquid according to claim 1, wherein the emulsifier is one of tween and span surfactants or any combination thereof.
4. The method for preparing the stone needle composite dispersion liquid according to claim 1, wherein the dispersion stabilizer is one or a combination of polyvinyl alcohol and its derivatives, polyvinylpyrrolidone and its derivatives, cellulose and its derivatives, water-soluble chitosan and its derivatives, polyethylene glycols, carbomers.
5. The method for preparing the stone needle composite dispersion liquid as claimed in claim 1, wherein the surfactant is a surfactant having a carbon chain length of C10~C26Sodium sulfate, sodium sulfonate, sulfate ester salt, polyoxyethylene ether sulfate, or their combination.
6. The method for preparing the stone needle composite dispersion liquid according to claim 1, wherein the additive amounts of the oil phase component, the emulsifier, the dispersion stabilizer and the surfactant in the additive components are in positive correlation with each other; the addition amounts of the oil phase component, the emulsifier, the dispersion stabilizer and the surfactant are in negative correlation with the addition amount of the stone needle powder.
7. A stone needle composite dispersion, characterized in that it is prepared according to the method of any one of claims 1 to 6.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114196236A (en) * | 2021-12-10 | 2022-03-18 | 长沙惠科光电有限公司 | High-pigment carbon black and preparation method and application thereof |
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Application publication date: 20211105 |