CN210700049U - Waterborne copolymerization fluorescence polyurethane emulsion reation kettle - Google Patents
Waterborne copolymerization fluorescence polyurethane emulsion reation kettle Download PDFInfo
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- CN210700049U CN210700049U CN201822277953.9U CN201822277953U CN210700049U CN 210700049 U CN210700049 U CN 210700049U CN 201822277953 U CN201822277953 U CN 201822277953U CN 210700049 U CN210700049 U CN 210700049U
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Abstract
The utility model discloses a water-based copolymerization fluorescent polyurethane emulsion reaction kettle, which comprises a kettle body, a kettle cover and a heat-preservation jacket, wherein the kettle cover and the heat-preservation jacket are matched with the kettle body; a stirring shaft is arranged in the kettle body along the central axis of the kettle body, penetrates out of the upper part of the kettle cover and is driven by a motor; dispersion impeller, anchor agitator and high shear emulsification head are installed respectively to (mixing) shaft top-down, the dispersion impeller both sides all are equipped with a plurality of teeth, the anchor agitator with the internal wall of cauldron is laminated mutually, high shear emulsification head sets up the bottom of (mixing) shaft. The utility model discloses can stir reaction medium omnidirectionally in the reation kettle, to the moisture fast dispersion of adding to reaction medium, accomplish the emulsification in the short time, stir more evenly to whole reaction system, and effectively avoid the fluorescence emulsion deposit on the internal wall of cauldron.
Description
Technical Field
The utility model belongs to waterborne polyurethane emulsion apparatus for producing field, concretely relates to waterborne copolymerization fluorescence polyurethane emulsion reation kettle.
Background
The aqueous polyurethane is a novel polyurethane system which takes water as a dispersing medium instead of an organic solvent, takes water as a solvent, is pollution-free, safe and reliable, and gradually becomes an important direction for the development of the polyurethane industry. At present, a reaction kettle is generally adopted for reaction in the production of waterborne polyurethane, and the waterborne polyurethane is stirred by matching with a stirring paddle.
The stirrer is one of the important factors influencing the reaction quality in the reaction kettle, and the stirring is not uniform and is locally overheated, so that the coagulation phenomenon is easy to occur for one polymerization reaction.
When the polyurethane prepolymer is emulsified and dispersed, the polyurethane prepolymer in the oil phase can be dispersed in water under the action of high-speed shearing force to form an oil-in-water dispersion liquid, when the dispersion speed is low, the shearing force is low, the polyurethane prepolymer is not easy to disperse, and the obtained dispersion liquid has undispersed blocks or large colloidal particle size, so that the emulsion is unstable in storage. Research shows that with the increase of the dispersion speed, the appearance of the dispersion liquid becomes good, the particle size of the emulsion is reduced, but after reaching a certain rotating speed, the rotating speed is continuously increased, the product performance is not improved, the energy consumption is increased, and therefore, the dispersion speed has great influence on the synthesis of stable emulsion.
In addition, most fluorescent polymeric materials are insoluble in water or exhibit quenching in water. However, in the polymer emulsion system, due to the wrapping effect of the latex particles, the fluorescence performance of the material is maintained, and the application field of the fluorescent material is effectively expanded. For the preparation of the water-based polyurethane fluorescent material, in the emulsion polymerization process, the influence of water on the fluorescent material is avoided due to the existence of polyurethane, and the fluorescence property of the fluorescent material in an emulsion system is maintained. Therefore, the control of the water adding speed and the water mixing uniformity in the polymerization and emulsification process of the waterborne polyurethane emulsion has direct influence on the property of the emulsion, and researches show that the water adding speed is in direct proportion to the particle size of the emulsion, but the water adding speed is too slow, the high viscosity of an emulsification system is kept for too long time, and a large amount of heat is generated in high-shear emulsification to increase the emulsification temperature, so that the side reaction degree of NCO groups and water is increased, polyurea precipitates are easily generated, and the emulsion is unstable, so that the control of the water adding speed is very important at a certain rotating speed.
The fluorescent material is a paste-shaped object with a viscous colloid dispersed, when the traditional reaction kettle is stirred and mixed, the fluorescent material is very easy to attach to the wall of the kettle, and the common single-paddle stirring fin can not meet the requirement of uniform stirring, so that the quality of the product is seriously influenced.
SUMMERY OF THE UTILITY MODEL
To solve the problems in the prior art, the present invention is to provide a water-based copolymerized fluorescent polyurethane emulsion reactor.
In order to realize the above purpose, the utility model discloses a technical scheme be:
a water-based copolymerization fluorescent polyurethane emulsion reaction kettle comprises a kettle body, a kettle cover and a heat-preservation jacket, wherein the kettle cover and the heat-preservation jacket are matched with the kettle body; the monomer raw material feeding port and the main feeding port are positioned on two sides of the central axis of the kettle body;
a stirring shaft is arranged in the kettle body along the central axis of the kettle body, penetrates out of the upper part of the kettle cover and is driven by a motor;
dispersion impeller, anchor agitator and high shear emulsification head are installed respectively to (mixing) shaft top-down, the dispersion impeller both sides all are equipped with a plurality of teeth, the anchor agitator with the internal wall of cauldron is laminated mutually, high shear emulsification head sets up the bottom of (mixing) shaft.
Further, the monomer raw material feed inlet is used for adding the fluorescent agent monomer raw material in the polyurethane emulsion copolymerization process.
Furthermore, the spraying device is a circular water inlet pipeline arranged on the inner wall of the kettle body, and spraying heads are uniformly arranged on the water pipe.
Furthermore, the teeth on the dispersion disc are of a double-layer structure distributed annularly.
Further, the length of the teeth arranged on the periphery is larger than that of the teeth arranged on the inner layer.
Furthermore, the upper part of the kettle body is of a column structure, and the lower part of the kettle body is of an elliptic-round-bottom cone structure.
The technical effects of the utility model reside in that:
the utility model discloses in be provided with the charge door of fluorescent agent monomer raw materials on the kettle cover, it is different to feed in time to different fluorescent agent properties, can do not influence each other with the addition of main material composition, it is more convenient to feed in; the dispersion disc, the anchor stirrer and the high-shear emulsification head are arranged from top to bottom, so that the reaction medium can be stirred in an all-around manner, the added water can be rapidly dispersed into the reaction medium in the water adding process, the emulsification is completed in a short time, and the fluorescence performance of the fluorescent polymerization emulsion is effectively improved; the dispersion impeller can be with the reaction system intensive mixing dispersion at cauldron body middle part, makes the emulsion disperse to cauldron internal wall periphery from cauldron body middle part, and anchor agitator constantly scrapes the fluorescence emulsion that attaches to on cauldron internal wall simultaneously, makes fluorescence emulsion gather to cauldron body middle part again, and is more even to whole reaction system stirring, and effectively avoids fluorescence emulsion deposit on cauldron internal wall.
Drawings
Fig. 1 is a schematic structural diagram of the fluorescent polyurethane emulsion reaction kettle of the present invention.
Reference numerals: 1-kettle body; 2-kettle cover; 3-main feed inlet; 4-a discharge hole; 5-water inlet pipe; 6-a monomer raw material charging port; 7-a spraying device; 8, a motor; 9-heat preservation jacket; 10-a stirring shaft; 11-a dispersion tray; 12-anchor agitator; 13-high shear emulsification head; 111-tooth sheet.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Referring to the attached figure 1, the water-based copolymerization fluorescent polyurethane emulsion reaction kettle comprises a kettle body 1, a kettle cover 2 and a heat-preservation jacket 9, wherein the kettle cover 2 and the heat-preservation jacket are matched with the kettle body, a main feeding hole 3 is formed in the kettle cover 2, a discharging hole 4 is formed in the bottom of the kettle body 1, a water inlet pipe 5 and a monomer raw material feeding hole 6 are further formed in the kettle cover 2, and the water inlet pipe 5 is connected with a spraying device 7 located on the upper portion of the kettle body 1; the monomer raw material feed inlet 6 and the main feed inlet 3 are positioned on two sides of the central axis of the kettle body 1;
a stirring shaft 10 is arranged in the kettle body 1 along the central axis thereof, and the stirring shaft 10 penetrates out of the upper part of the kettle cover 2 and is driven by a motor 8;
The dispersion disc 11, the anchor stirrer 12 and the high-shear emulsification head 13 which are arranged from top to bottom can stir the reaction medium in an all-around manner, the added water can be rapidly dispersed into the reaction medium in the water adding process, the emulsification is completed in a short time, and the fluorescence property of the fluorescent polymerization emulsion is effectively improved; the dispersion impeller 11 can be with the reaction system intensive mixing dispersion at cauldron body 1 middle part, makes the emulsion from cauldron body 1 middle part to the peripheral dispersion of cauldron body 1 inner wall, and anchor agitator 12 constantly scrapes the fluorescence emulsion that attaches to on the internal wall of cauldron down simultaneously, makes fluorescence emulsion again to the middle part of the cauldron gather, and is more even to whole reaction system stirring, and effectively avoids fluorescence emulsion deposit on cauldron internal wall.
Further, the monomer raw material feed inlet 6 is used for adding the fluorescent agent monomer raw material in the polyurethane emulsion copolymerization process. The time that it will feed in raw materials is also different to the difference of different fluorescent agent properties, sets up the charge door of fluorescent agent monomer raw materials, can do not influence each other with the interpolation of main material composition, and it is more convenient to feed in raw materials.
Further, the spraying device 7 is a circular water inlet pipeline arranged on the inner wall of the kettle body 1, and spraying heads (not marked in the figure) are uniformly arranged on the water pipe.
Further, the teeth 111 on the dispersion board 11 are of a double-layer structure distributed annularly.
Further, the length of the teeth 111 disposed at the periphery is greater than the length of the teeth 111 disposed at the inner layer.
Further, the upper part of the kettle body 1 is of a column structure, and the lower part of the kettle body is of an elliptic-round-bottom cone structure.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A water-based copolymerization fluorescent polyurethane emulsion reaction kettle comprises a kettle body (1), a kettle cover (2) and a heat-preservation jacket (9), wherein the kettle cover (2) is matched with the kettle body, a main feeding hole (3) is formed in the kettle cover (2), a discharging hole (4) is formed in the bottom of the kettle body (1), the water-based copolymerization fluorescent polyurethane emulsion reaction kettle is characterized in that a water inlet pipe (5) and a monomer raw material feeding hole (6) are further formed in the kettle cover (2), and the water inlet pipe (5) is connected with a spraying device (7) located on the upper portion of the kettle body (1); the monomer raw material feeding port (6) and the main feeding port (3) are positioned on two sides of the central axis of the kettle body (1);
a stirring shaft (10) is arranged in the kettle body (1) along the central axis of the kettle body, and the stirring shaft (10) penetrates through the upper part of the kettle cover (2) and is driven by a motor (8);
dispersion impeller (11), anchor agitator (12) and high shear emulsification head (13) are installed respectively to (mixing) shaft (10) top-down, dispersion impeller (11) two sides all is equipped with a plurality of teeth piece (111), anchor agitator (12) with the cauldron body (1) inner wall is laminated mutually, high shear emulsification head (13) set up the bottom of (mixing) shaft (10).
2. The reaction kettle as claimed in claim 1, wherein the monomer material inlet (6) is used for adding the fluorescer monomer material during the copolymerization of the polyurethane emulsion.
3. The water-based copolymerization fluorescent polyurethane emulsion reaction kettle according to claim 1, wherein the spraying device (7) is a circular water inlet pipeline arranged on the inner wall of the kettle body (1), and spraying heads are uniformly arranged on the water inlet pipeline.
4. The aqueous copolymerization fluorescent polyurethane emulsion reactor according to claim 1, wherein the teeth (111) on the dispersion plate (11) are annularly distributed in a double-layer structure.
5. The aqueous copolymerization fluorescent polyurethane emulsion reactor according to claim 4, wherein the length of the teeth (111) arranged on the periphery is greater than the length of the teeth (111) arranged on the inner layer.
6. The water-based copolymerization fluorescent polyurethane emulsion reaction kettle according to claim 1, wherein the upper part of the kettle body (1) is of a cylindrical structure, and the lower part of the kettle body is of an elliptical-round-bottom cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277953.9U CN210700049U (en) | 2018-12-29 | 2018-12-29 | Waterborne copolymerization fluorescence polyurethane emulsion reation kettle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277953.9U CN210700049U (en) | 2018-12-29 | 2018-12-29 | Waterborne copolymerization fluorescence polyurethane emulsion reation kettle |
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| CN210700049U true CN210700049U (en) | 2020-06-09 |
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| CN201822277953.9U Active CN210700049U (en) | 2018-12-29 | 2018-12-29 | Waterborne copolymerization fluorescence polyurethane emulsion reation kettle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477207A (en) * | 2021-08-12 | 2021-10-08 | 扬州虹光生物科技有限公司 | Combined stirring reaction kettle |
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- 2018-12-29 CN CN201822277953.9U patent/CN210700049U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477207A (en) * | 2021-08-12 | 2021-10-08 | 扬州虹光生物科技有限公司 | Combined stirring reaction kettle |
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