CN116926692A - Flash spinning heart-shaped microreactor - Google Patents
Flash spinning heart-shaped microreactor Download PDFInfo
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- CN116926692A CN116926692A CN202311196254.0A CN202311196254A CN116926692A CN 116926692 A CN116926692 A CN 116926692A CN 202311196254 A CN202311196254 A CN 202311196254A CN 116926692 A CN116926692 A CN 116926692A
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- 238000009987 spinning Methods 0.000 title claims abstract description 24
- 238000005192 partition Methods 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 27
- 238000000926 separation method Methods 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 16
- 229920001474 Flashspun fabric Polymers 0.000 claims 9
- 239000004751 flashspun nonwoven Substances 0.000 claims 9
- 229920000642 polymer Polymers 0.000 abstract description 54
- 239000002904 solvent Substances 0.000 abstract description 31
- 238000004090 dissolution Methods 0.000 abstract description 16
- 239000000243 solution Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 13
- -1 filaments Polymers 0.000 description 10
- 239000004698 Polyethylene Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/11—Flash-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The embodiment of the application provides a flash spinning heart-shaped microreactor, which relates to the technical field of flash spinning and comprises a plurality of heart-shaped bodies, wherein each heart-shaped body in the plurality of heart-shaped bodies is provided with a containing cavity, the plurality of heart-shaped bodies are connected in series along a preset direction so as to enable the containing cavities to be communicated, and concave parts of any two adjacent heart-shaped bodies in the plurality of heart-shaped bodies are connected with a heart apex part; each heart-shaped body in the plurality of heart-shaped bodies is provided with an opening, the inflow direction of each opening is parallel, and the inflow direction of the opening is perpendicular to the preset direction; the concave part of each heart-shaped body in the plurality of heart-shaped bodies is provided with an inflow port, the apex part of each heart-shaped body in the plurality of heart-shaped bodies is provided with an outflow port, the inflow ports of the adjacent heart-shaped bodies in the plurality of heart-shaped bodies are communicated with the outflow ports, and the direction of the inflow ports pointing to the outflow ports is parallel to the preset direction; ensure complete dissolution of the polymer and solvent and ensure the performance of the polymer solution.
Description
Technical Field
The embodiment of the application relates to the technical field of flash spinning, in particular to a heart-shaped micro-reactor for flash spinning.
Background
The flash spinning has the characteristics of high efficiency, rapidness and flexibility, and can produce high-performance fibers such as filaments, microfibers and the like. It has wide application in textile, filtering, medical and electronic fields.
The flash spinning process is a process for preparing fibers by passing a high molecular polymer solution through a feeding system and a flash evaporation system. In this process, the feed system is mainly responsible for heating, mixing and compressing the high molecular polymer solution. The dissolution of the high molecular polymer solution is the most critical part of the feeding system, and the dissolution effect of the polymer and the solvent can have an extremely important influence on the effect of preparing fibers by a subsequent flash evaporation system because the polymer is difficult to dissolve.
Disclosure of Invention
The embodiment of the application provides a flash spinning heart-shaped micro-reactor, which ensures complete dissolution of a polymer and a solvent so as to ensure the performance of a polymer solution.
The embodiment of the application provides a flash spinning heart-shaped microreactor, which comprises the following components:
the heart-shaped body comprises a plurality of heart-shaped bodies, wherein each heart-shaped body is provided with a containing cavity, the heart-shaped bodies are connected in series along a preset direction so as to enable the containing cavities to be communicated, and the concave parts of any two adjacent heart-shaped bodies in the heart-shaped bodies are connected with the apex part; each heart-shaped body in the plurality of heart-shaped bodies is provided with an opening, the inflow direction of each opening is parallel, and the inflow direction of each opening is perpendicular to the preset direction; along the preset direction, the concave part of each heart-shaped body in the plurality of heart-shaped bodies is provided with an inflow port, the apex part of each heart-shaped body in the plurality of heart-shaped bodies is provided with an outflow port, the inflow ports of adjacent heart-shaped bodies in the plurality of heart-shaped bodies are communicated with the outflow port, and the direction of the inflow port pointing to the outflow port is parallel to the preset direction;
the diameter of the largest part in each of the plurality of heart-shaped bodies is d1, the diameter of the inflow opening in each of the plurality of heart-shaped bodies is d2, the diameter of the outflow opening in each of the plurality of heart-shaped bodies is d3, and the diameter of the opening in each of the plurality of heart-shaped bodies is d4; wherein d1/d2=3-5, d3/d2=1.1-1.4, d3/d4=1.5-2.
The flash spinning heart-shaped microreactor provided by the embodiment of the application is used for dissolving a polymer and a solvent, and comprises a plurality of heart-shaped bodies which are arranged in series, wherein each heart-shaped body is provided with a containing cavity, the plurality of heart-shaped bodies are connected in series along a preset direction so that the containing cavities of the heart-shaped bodies are communicated with each other, each heart-shaped body is provided with a concave part and a heart tip part, and the concave part of one heart-shaped body of any two adjacent heart-shaped bodies is communicated with the heart tip part of the other heart-shaped body, so that the communication of the two adjacent heart-shaped bodies is realized; specifically, each heart-shaped body is provided with an opening for injecting the polymer, and the polymer is divided into a plurality of sections for adding because the polymer is not easy to dissolve, namely, each heart-shaped body is provided with an opening for adding the polymer, the flow speed of the polymer flowing into the heart-shaped body from the opening is high to form high-speed turbulence, and the polymer forms shearing force at the opening to accelerate the dissolution of the polymer; the method comprises the steps that along a preset direction, an inflow port is formed in a concave part of each heart-shaped body in a plurality of heart-shaped bodies, an outflow port is formed in a heart tip part of each heart-shaped body in the plurality of heart-shaped bodies, and the inflow port at the position of the first heart-shaped body in the plurality of heart-shaped bodies serves as an injection port of solvent; taking the first heart-shaped body of the plurality of heart-shaped bodies as an example, when the solvent flows in from the inflow opening of the first heart-shaped body, the polymer injected from the opening of the first heart-shaped body is mixed with the solvent from two different directions, so that a vortex is formed in the accommodating cavity, and the flow rate of the polymer flowing into the accommodating cavity from the opening is large, namely, the polymer flowing into the accommodating cavity from the opening is turbulent at a high speed, so that shearing force is generated, and the dissolution of the polymer in the solvent is accelerated. The polymer is added by dividing the polymer into a plurality of sections, so that the effect of high-efficiency dissolution is achieved, and the special shape of the heart-shaped body can increase the flow path and the contact area of the fluid, so that the mass transfer efficiency is improved, which is very beneficial to the reaction process requiring quick reaction or high mass transfer efficiency, so that the quick dissolution of the polymer is achieved. The relationship of the diameter of the largest part in each of the several heart-shaped bodies, the diameter of the inflow opening, the diameter of the outflow opening and the opening diameter is as follows: d1/d2=3-5, d3/d2=1.1-1.4, d3/d4=1.5-2, the heart-shaped body in the above-mentioned size relationship has at least the following effects: the heart-shaped body can reduce the existence of dead zones, namely, the area where liquid cannot flow effectively in the heart-shaped body easily causes uneven reaction or side reaction, the shape of the heart-shaped body can reduce the formation of the dead zones, and the uniformity and the selectivity of the reaction are improved. In addition, the heart-shaped body can reduce the residence time of the fluid in the body, thereby reducing the reaction time and improving the reaction efficiency. In addition, the shape of the heart-shaped body makes the operation and cleaning more convenient. Because the accommodating cavity of the heart-shaped body is not provided with dead angles, fluid can flow and be discharged more easily, and the difficulty of operation and cleaning is reduced.
Optionally, each of the heart-shaped bodies comprises: and a separation blocking structure, wherein each accommodating cavity is provided with the separation blocking structure, and the separation blocking structure is used for dividing the fluid entering from the inflow port into two parts.
Optionally, the separation barrier comprises a partition adjacent to the inflow port, the partition dividing the fluid entering from the inflow port into two streams.
Optionally, the partition is located at a position of an axial line of the inflow port.
Optionally, a side surface of the partition facing the inflow port is a first arc surface, and the first arc surface protrudes toward the outflow port.
Optionally, a side surface of the partition facing the outflow port is a second arc surface, and the second arc surface protrudes toward the outflow port.
Optionally, the partition has a first surface and a second surface disposed in parallel, and the first surface and the second surface are connected by the first arcuate surface and the second arcuate surface.
Optionally, the orthographic projection of the opening on the partition is located entirely on the first surface or the second surface.
Optionally, the separation blocking structure further includes a blocking portion, the separation portion is perpendicular to the blocking portion, the blocking portion blocks the two flows of fluid to flow back toward the direction of the inflow port, the blocking portion is a third arc-shaped surface toward the inflow port, and the third arc-shaped surface protrudes toward the outflow port.
Optionally, the thickness of the partition is the same as the thickness of the barrier.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a flash spinning heart-shaped microreactor according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a heart-shaped body according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a heart-shaped body according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of a heart-shaped body provided by an embodiment of the present application;
fig. 5 is a schematic structural diagram of a separation barrier according to an embodiment of the present application.
Reference numerals: 1-a heart-shaped body; 11-a receiving cavity; 12-opening; 13-an inflow port; 14-outflow port; 15-a recessed portion; 16-apex portion; 2-a separation barrier; 21-a partition; 211-a first arcuate surface; 212-a second arcuate surface; 213-a first surface; 214-a second surface; 22-a barrier; 221-third arcuate surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
For ease of understanding, taking fig. 1 as an example, solvent flows into the heart-shaped bodies 1 from the inflow port 13 in the first heart-shaped body 1 of the plurality of heart-shaped bodies 1, the opening 12 in the first heart-shaped body 1 flows into the polymer, and then the polymer is mixed with the solvent to form a spinning solution; the spinning solution then flows from the outflow opening 14 in the first heart-shaped body 1 into the next heart-shaped body 1, then the polymer flows from the opening 12, and is mixed with the spinning solution again to form a new spinning solution in which the polymer is dissolved again, and the steps are sequentially carried out to dissolve, so that the outflow openings 14 in the tail heart-shaped bodies 1 in the plurality of heart-shaped bodies 1 discharge the dissolved final spinning solution.
As shown in fig. 1-3, a flash spinning heart-shaped microreactor comprising:
the heart-shaped body comprises a plurality of heart-shaped bodies 1, wherein each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is provided with a containing cavity 11, the plurality of heart-shaped bodies 1 are connected in series along a preset direction so as to enable the containing cavities 11 to be communicated, and a concave part 15 of any two adjacent heart-shaped bodies 1 of the plurality of heart-shaped bodies 1 is connected with a heart apex part 16; each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is provided with an opening 12, the inflow direction of each opening 12 is parallel, and the inflow direction of the opening 12 is perpendicular to the preset direction; along a preset direction, the concave part 15 of each heart-shaped body 1 in the plurality of heart-shaped bodies 1 is provided with an inflow port 13, the apex part 16 of each heart-shaped body 1 in the plurality of heart-shaped bodies 1 is provided with an outflow port 14, the inflow ports 13 of adjacent heart-shaped bodies 1 in the plurality of heart-shaped bodies 1 are communicated with the outflow port 14, and the direction of the inflow port 13 pointing to the outflow port 14 is parallel to the preset direction;
the diameter of the largest part in each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is d1, the diameter of the inflow opening 13 in each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is d2, the diameter of the outflow opening 14 in each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is d3, and the diameter of the opening 12 in each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is d4; wherein d1/d2=3-5, d3/d2=1.1-1.4, d3/d4=1.5-2.
It should be noted that, the flash spinning heart-shaped microreactor provided in the embodiment of the present application is used for dissolving a polymer and a solvent, and includes a plurality of heart-shaped bodies 1 arranged in series, each heart-shaped body 1 has a receiving cavity 11, and the plurality of heart-shaped bodies 1 are connected in series along a preset direction so that the receiving cavities 11 of each heart-shaped body 1 are communicated with each other, each heart-shaped body 1 has a concave portion 15 and a heart tip portion 16, and the concave portion 15 of one heart-shaped body 1 of any two adjacent heart-shaped bodies 1 is communicated with the heart tip portion 16 of the other heart-shaped body 1, thereby realizing the communication of two adjacent heart-shaped bodies 1; specifically, each heart-shaped body 1 is provided with an opening 12, the opening 12 is used for injecting the polymer, the polymer is divided into a plurality of sections for adding because the polymer is not easy to dissolve, namely, each heart-shaped body 1 is provided with the opening 12 for adding the polymer, the high-speed turbulence is formed by the high flow rate of the polymer flowing into the heart-shaped body 1 from the opening 12, and the shearing force is formed at the opening 12 by the polymer, so that the dissolution of the polymer is accelerated; the concave portion 15 of each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is provided with an inflow port 13 along a preset direction, the apex portion 16 of each heart-shaped body 1 of the plurality of heart-shaped bodies 1 is provided with an outflow port 14, and the inflow port 13 at the first heart-shaped body 1 of the plurality of heart-shaped bodies 1 serves as an injection port of a solvent; taking the first heart-shaped body 1 of the plurality of heart-shaped bodies 1 as an example, when the solvent flows in from the inflow port 13 of the first heart-shaped body 1, the polymer injected from the opening 12 of the first heart-shaped body 1 is mixed with the solvent from two different directions, so that a vortex is formed in the accommodating chamber 11, and the flow rate of the polymer flowing into the accommodating chamber 11 from the opening 12 is large, i.e., the polymer flowing into the accommodating chamber 11 from the opening 12 is turbulent at a high speed, so that a shearing force is generated, thereby accelerating the dissolution of the polymer in the solvent. The polymer is added by dividing into a plurality of sections, so that the effect of high-efficiency dissolution is achieved, and the special shape of the heart-shaped body 1 can increase the flow path and the contact area of the fluid, so that the mass transfer efficiency is improved, which is very beneficial to the reaction process requiring rapid reaction or high mass transfer efficiency, so that the rapid dissolution of the polymer is achieved. The relationship among the diameter of the largest portion in each heart-shaped body 1 of the plurality of heart-shaped bodies 1, the diameter of the inflow opening 13, the diameter of the outflow opening 14, and the diameter of the opening 12 is as follows: d1/d2=3-5, e.g., d1/d2=3, 4 or 5; d3/d2=1.1-1.4, e.g., d3/d2=1.1, 1.2, 1.3, or 1.4; d3/d4=1.5-2, e.g. d3/d4=1.5, 1.6, 1.7, 1.8, 1.9 or 2; the heart-shaped body 1 in the above-mentioned size relationship has at least the following effects: the heart-shaped body 1 can reduce the existence of dead zones, namely, the area where liquid cannot flow effectively in the heart-shaped body 1, so that uneven reaction or side reaction is easy to occur, the shape of the heart-shaped body 1 can reduce the formation of the dead zones, and the uniformity and the selectivity of the reaction are improved. In addition, the heart-shaped body 1 can reduce the residence time of the fluid in the body, thereby reducing the reaction time and improving the reaction efficiency. In addition, the shape of the heart-shaped body 1 makes handling and cleaning more convenient. Because the accommodating cavity 11 of the heart-shaped body 1 has no dead angle, fluid can flow and be discharged more easily, and the difficulty of operation and cleaning is reduced.
With continued reference to fig. 1, the number of heart-shaped bodies 1 in fig. 1 is not particularly limited, and the number of heart-shaped bodies 1 may be two, three or more, and the number of heart-shaped bodies 1 is related to the degree of dissolution of the solvent and the polymer.
The polymers involved in embodiments of the present application may be: polypropylene (PP) or Polyethylene (PE), polypropylene is a common synthetic fiber material. Polypropylene is a thermoplastic polymer with good wear resistance, acid and alkali resistance and high temperature resistance. It has the characteristics of light weight, softness, air permeability, poor hygroscopicity and the like, and is commonly used for manufacturing clothing, household articles, industrial articles and the like. Polypropylene fibers generally have higher strength and durability, and also have lower hygroscopicity and softness, and are suitable for making wear-resistant and corrosion-resistant textiles. Polyethylene, a polymer composed of ethylene monomers (C 2 H 4 ) A polymer compound formed by polymerization. It is a common plastic material with good heat resistance, chemical resistance and mechanical properties.
Since there is a problem that Polyethylene (PE) and a solvent are difficult to dissolve, in order to solve the above problems: as shown in fig. 4, for easy understanding, fig. 4 is a cross-sectional view of a heart-shaped body 1 provided in an embodiment of the present application, and the heart-shaped body 1 includes: the partition blocking structures 2 are provided in each of the accommodation chambers 11, and the partition blocking structures 2 are provided to divide the fluid entering from the inflow port 13 into two parts. In order to further improve the dissolution efficiency of polyethylene and solvent, a separation blocking structure 2 is provided in each accommodating chamber 11, and the separation blocking structure is provided to change the flow direction of the fluid flowing in from the inflow port 13, and also change the flow direction of the polyethylene entering from the opening 12, so that the contact area of the solvent and the polymer can be increased by changing the flow direction of the fluid, thereby improving the mass transfer efficiency. Changing the flow direction of the fluid can reduce the existence of dead zones, wherein the dead zones are areas where the fluid cannot flow effectively in the reactor, and the uneven reaction or side reaction is easily caused; changing the flow direction of the fluid can reduce the formation of dead zones and improve the uniformity and selectivity of the reaction. The separation blocking structure 2 is arranged in the accommodating cavity 11, so that the reaction time can be controlled by effectively changing the flow direction of the fluid; by varying the flow rate or flow path of the fluid, the residence time of the polymer in the receiving chamber 11 can be adjusted, thereby controlling the rate and effect of the reaction, i.e. increasing the efficiency of dissolution of the polymer in the solvent.
With continued reference to fig. 4, the partition blocking structure 2 includes a partition 21, the partition 21 being adjacent to the inflow port 13, the partition 21 dividing the fluid entering from the inflow port 13 into two streams, which are divided into two parts and respectively flow in two spaces of the accommodating chamber 11, increasing the space in which the fluid flows, in other words, increasing the contact time of the polymer with the solvent. The partition 21 is located at the position of the axial line of the inflow port 13 so that the flow rate and speed of the two streams are approximately the same, thereby securing the stability of the two streams flow.
As shown in fig. 5, a side surface of the partition portion 21 facing the inflow port 13 is a first arcuate surface 211, and the first arcuate surface 211 projects toward the outflow port 14. Along a preset direction, the first heart-shaped body 1 flows in the solvent from the inflow opening 13, the flowing-in solvent contacts with the first arc-shaped surface 211, and the solvent contacted with the first arc-shaped surface 211 flows to two sides, so that the solvent is uniformly distributed when contacting with the first arc-shaped surface 211, the phenomenon of local vortex or turbulence of the solvent in the flowing process is avoided, and the stability and uniformity of the fluid are maintained; the flow path of the solvent becomes smoother when the solvent contacts the first curved surface 211, reducing frictional resistance between the solvent and the first curved surface 211; this helps to increase the flow rate and velocity of the fluid, which in turn increases the dissolution efficiency of the polymer and solvent.
With continued reference to fig. 5, a side surface of the partition 21 facing the outflow port 14 is a second arcuate surface 212, and the second arcuate surface 212 protrudes toward the outflow port 14. Since the partition portion 21 and the blocking portion 22 are spaced apart from each other, a part of the fluid flows between the partition portion 21 and the blocking portion 22, and in order to reduce the resistance to the fluid flowing between the partition portion 21 and the blocking portion 22, the side of the partition portion 21 facing the blocking portion 22 is formed as the second arc surface 212. The partition 21 has a first surface 213 and a second surface 214 arranged in parallel, the first surface 213 and the second surface 214 being connected by a first arcuate surface 211 and a second arcuate surface 212; the first surface 213 and the second surface 214 are planar.
With continued reference to fig. 4, the orthographic projection of the opening 12 on the partition 21 is entirely located on the first surface 213 or the second surface 214. I.e., the inflow of the polymer from the opening 12 is blocked by the first surface 213 or the second surface 214 of the partition 21, the contact time of the polymer with the solvent and the complexity of mixing are increased.
In some specific embodiments, the separation barrier 2 further includes a blocking portion 22, the separation portion 21 is perpendicular to the blocking portion 22, the blocking portion 22 blocks two flows of fluid to flow back toward the inflow port 13, the blocking portion 22 is a third arc surface 221 toward the inflow port 13, and the third arc surface 221 protrudes toward the outflow port 14. Taking the first heart-shaped body 1 of the heart-shaped bodies 1 as an example, the solute entering from the inflow opening 13 is divided into two flows by the separation part 21, the two flows downwards along the preset direction, the solute and the polymer are mixed in the flowing process, the spinning solution is formed after mixing, and the spinning solution is contacted with the third arc-shaped surface 221 of the blocking part 22, so that when the spinning solution is contacted with the third arc-shaped surface 221, the flowing path becomes smoother, and the friction resistance between the spinning solution and the third arc-shaped surface 221 is reduced. This helps to increase the flow rate and flow rate of the dope and reduce energy loss.
In order to secure the strength of the separation barrier 2 as a whole, the thickness of the separation portion 21 is the same as that of the barrier portion 22, and both the separation portion 21 and the barrier portion 22 are welded to the heart-shaped body 1.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A flash spun heart-shaped microreactor comprising:
the heart-shaped body comprises a plurality of heart-shaped bodies, wherein each heart-shaped body is provided with a containing cavity, the heart-shaped bodies are connected in series along a preset direction so as to enable the containing cavities to be communicated, and the concave parts of any two adjacent heart-shaped bodies in the heart-shaped bodies are connected with the apex part; each heart-shaped body in the plurality of heart-shaped bodies is provided with an opening, the inflow direction of each opening is parallel, and the inflow direction of each opening is perpendicular to the preset direction; along the preset direction, the concave part of each heart-shaped body in the plurality of heart-shaped bodies is provided with an inflow port, the apex part of each heart-shaped body in the plurality of heart-shaped bodies is provided with an outflow port, the inflow ports of adjacent heart-shaped bodies in the plurality of heart-shaped bodies are communicated with the outflow port, and the direction of the inflow port pointing to the outflow port is parallel to the preset direction;
the diameter of the largest part in each of the plurality of heart-shaped bodies is d1, the diameter of the inflow opening in each of the plurality of heart-shaped bodies is d2, the diameter of the outflow opening in each of the plurality of heart-shaped bodies is d3, and the diameter of the opening in each of the plurality of heart-shaped bodies is d4; wherein d1/d2=3-5, d3/d2=1.1-1.4, d3/d4=1.5-2.
2. The flash spun heart microreactor of claim 1, wherein each of said heart-shaped bodies comprises: and a separation blocking structure, wherein each accommodating cavity is provided with the separation blocking structure, and the separation blocking structure is used for dividing the fluid entering from the inflow port into two parts.
3. The flash spun heart microreactor of claim 2, wherein the separation barrier comprises a partition adjacent the inflow port, the partition dividing the fluid entering from the inflow port into two streams.
4. A flash spun heart shaped microreactor as claimed in claim 3 wherein the partition is located at the location of the axis of the inflow port.
5. The flash spun heart microreactor of claim 4, wherein a side surface of the divider facing the inflow port is a first arcuate surface, the first arcuate surface protruding toward the outflow port.
6. The flash spun heart microreactor of claim 5, wherein a side surface of the divider facing the outflow opening is a second arcuate surface, the second arcuate surface protruding toward the outflow opening.
7. The flash spun heart-shaped microreactor of claim 6, wherein the divider has first and second surfaces disposed in parallel, the first and second surfaces being connected by the first and second arcuate surfaces.
8. The flash spun heart microreactor of claim 7, wherein the orthographic projection of the opening on the partition is entirely located on the first surface or the second surface.
9. The flash spinning heart-shaped microreactor of any one of claims 3-8, wherein the separation barrier further comprises a barrier perpendicular to the barrier, the barrier blocking the two streams of fluid from flowing back in a direction toward the inflow port, the barrier being a third arcuate surface toward the inflow port, the third arcuate surface protruding toward the outflow port.
10. The flash spun heart microreactor of claim 9, wherein the thickness of the divider is the same as the thickness of the barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311196254.0A CN116926692B (en) | 2023-09-18 | 2023-09-18 | Flash spinning heart-shaped microreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311196254.0A CN116926692B (en) | 2023-09-18 | 2023-09-18 | Flash spinning heart-shaped microreactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116926692A true CN116926692A (en) | 2023-10-24 |
| CN116926692B CN116926692B (en) | 2024-01-02 |
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| CN116926692B (en) | 2024-01-02 |
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