CN217856193U - Polymer liquid phase tackifying device - Google Patents
Polymer liquid phase tackifying device Download PDFInfo
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- CN217856193U CN217856193U CN202221697686.0U CN202221697686U CN217856193U CN 217856193 U CN217856193 U CN 217856193U CN 202221697686 U CN202221697686 U CN 202221697686U CN 217856193 U CN217856193 U CN 217856193U
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Abstract
The utility model discloses a polymer liquid phase adhesion promoter. The device comprises two-stage and two-stage film-forming polycondensation reactors connected in series, each two-stage film-forming polycondensation reactor comprises a barrel and three film-forming components which are arranged in the barrel and meshed with each other, the film-forming components are arranged in a parallel or triangular mode, the film-forming components are divided into a plurality of functional areas, a feeding section, a plasticizing section, six groups of dynamic mixing sections, a barrier section, a film-forming reaction section and a metering section are sequentially arranged along the axial direction of the film-forming polycondensation reactors, each functional area outside the barrel corresponds to one temperature control component, the barrel is provided with a feeding hole corresponding to the feeding section, the barrel is provided with a devolatilization port corresponding to the film-forming reaction section, and the devolatilization port is provided with a negative pressure system. The utility model discloses a functional area's optimization combination on three film forming components and the film forming component for the mixing of polymer fuse-element is abundant, be heated evenly, is difficult to take place local overheat at the homogeneous phase polycondensation in-process, has avoided fuse-element carbomorphism or coking scheduling problem, still has the effect of automatically cleaning.
Description
Technical Field
The utility model relates to a polymer production technical field especially relates to a polymer liquid phase adhesion promoter.
Background
In polymer production processes, low viscosity polyester, polyamide chips and renewable or recycled polyester, polyamide chips, require further increases in the molecular weight of the polymer, usually by polycondensation or finisher. Liquid phase tackifying means that the viscosity of a polymer is improved through specific process conditions in a molten state of the polymer, and a high-viscosity polymer melt which is directly used in subsequent processes, such as injection molding, spinning and the like, is prepared in one step. The method can overcome the defects of large investment, long period, high energy consumption and the like in the conventional polymer tackifying process. At present, a conventional liquid-phase tackifying device, such as a cage-frame type film-drawing melt liquid-phase tackifying reactor, is unevenly heated, and the tube wall is easily locally overheated to cause carbonization or coking of a polymer melt, so that the liquid-phase tackifying device cannot stably operate for a long time, needs to be stopped for cleaning and maintenance at irregular intervals, and causes the increase of the generation cost, the instability of the product quality and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an above-mentioned not enough to prior art, provide one kind and realized the online adhesion promotion of polymer fuse-element, shorten process flow and cycle by a wide margin, avoided local overheated polymer liquid phase adhesion promotion device simultaneously.
The utility model discloses a polymer liquid phase tackifying device, including the two-stage film forming polycondensation reactor of series connection, two-stage film forming polycondensation reactor includes drive structure, barrel and sets up three film forming component of intermeshing in the barrel, is side by side or triangle-shaped and arranges, drive structure drive is three film forming component rotates, film forming component divide into a plurality of functional areas, is a feed zone, a plastify section, six groups of dynamic mixing sections, protective screen section and film forming reaction section, a measurement section along its axial in proper order, every functional area corresponds a temperature control component outside the barrel, the barrel corresponds the feed zone is equipped with the feed inlet; the barrel, the film forming reaction section and the negative pressure pipeline form a devolatilization chamber, and the negative pressure pipeline is connected with a negative pressure system.
Further, the ratio L/D of the total length L of the film forming assembly to the outer diameter D thereof is 58-62.
Further, the feed section was 2.5D in length and consisted of two forward spiral elements each having a lead of 1.25D.
Furthermore, the length of the plasticizing section is 1.5-2.5D, the plasticizing section consists of 2-4 forward spiral elements, and the lead range is 0.5-1D.
Further, the dynamic mixing section is composed of 1-3 forward kneading block elements, the length of each forward kneading block element is 1D, the number of the forward kneading block elements composing the dynamic mixing section is sequentially 1, 2, 3 and 3 along the melt conveying direction, the staggered angle of the forward kneading blocks of the first two dynamic mixing sections is 30 degrees, the staggered angle of the two forward kneading blocks of the middle two dynamic mixing sections is respectively 30 degrees and 60 degrees along the melt conveying direction, and the staggered angle of the three forward kneading blocks of the following two dynamic mixing sections is respectively 30 degrees, 60 degrees and 90 degrees along the melt conveying direction.
Further, the length of the barrier section is 0.5D, said barrier section consisting of one reverse helical element with a lead of 0.5D.
Further, the length of the film-forming reaction zone was 6.1D, and it consisted of 4 sections of forward spiral elements, and the leads in the melt-conveying direction were 1.8D, 1.5D, and 1D, respectively. Wherein the lead is 1.8D element, the helix angle is 32.8 degrees, the depth of the helical groove is 0.175D, and the thickness of the helical ridge is 0.16D; the lead is 1.5D element, the helix angle is 27.4 degrees, the depth of the helical groove is 0.175D, and the thickness of the helical ridge is 0.12D; the lead was 1D element, helix angle 18.2 °, helix groove depth 0.175D, and helix ridge thickness 0.1D.
Furthermore, the length of the metering section is 3-5D, the metering section consists of 6-8 sections of forward spiral elements, the range of the lead is 0.5-1D, and the last 3 sections of forward spiral elements with the leads of 0.5D are all provided.
Furthermore, the temperature control assembly comprises a heating block, a cooling water channel wound outside the cylinder body and a temperature control sensor.
With polymer resin feeding the utility model discloses an in the two-stage film-forming polycondensation reactor, the resin is at feeding section and plastify section plastify melting under heating and the shearing action of film-forming component, the fuse-element is at protective screen section and film-forming reaction section misce bene and carry out the polycondensation reaction, negative pressure system removes the micromolecule water that the reaction produced constantly, promote going on of polycondensation reaction, realize the viscosity increase of polymer fuse-element, finally get into next two-stage film-forming polycondensation reactor again through the measurement section, repeat foretell process, finally carry the fuse-element to production lines such as spinning/moulding plastics/granulation through the measurement section.
With polymer resin feeding the utility model discloses an among the two-stage film-forming polycondensation reactor, the resin is at feeding section and plastify section plastify melting under heating and film-forming subassembly shearing action, the fuse-element is at protective screen section and film-forming reaction section misce bene and carry out polycondensation reaction, negative pressure system removes the little molecular water that the reaction produced constantly, promote polycondensation reaction's going on, realize the viscosity of polymer fuse-element and increase, finally get into next two-stage film-forming polycondensation reactor again through the measurement section, repeat foretell process, finally carry the fuse-element to production lines such as spinning/moulding plastics/granulation through the measurement section
Compared with the prior art, the utility model, can gain following beneficial effect:
1. by the optimized combination of the functional areas on the film forming assembly, the polymer melt is fully mixed and uniformly heated, local overheating is difficult to occur in the homogeneous polycondensation process, the problems of melt carbonization or coking and the like are avoided, and the self-cleaning function is achieved.
2. The devolatilization chamber where the film forming reaction section is located is connected with a negative pressure system, the pressure of the polymer melt at the section is small, and the film is rapidly formed through a large-lead element, so that the melt has large exhaust interface area and interface updating frequency, volatilization of micromolecule water generated by polycondensation reaction is promoted, volatilizable substances generated by polymerization in the polymer melt are efficiently removed, the polycondensation reaction of the polymer melt is promoted, the gradual increase of the viscosity of the polymer melt is realized, and the liquid phase tackifying of the polymer melt is realized. The shearing and mixing effect is gradually enhanced as the viscosity of the polymer melt is gradually increased and the melt viscosity of each section is relatively uniform and stable through the gradual increase of the forward kneading block elements of the dynamic mixing section.
3. The utility model overcomes conventional liquid phase tackifying method can not continuous production's a difficult problem, has realized the online tackifying of polymer fuse-element, shortens process flow and cycle by a wide margin, has avoided difficult problems such as the easy coking of local overheat simultaneously, realizes the long-term steady operation of liquid phase tackifying device.
Drawings
FIG. 1 is a schematic view of the internal structure of a dual-stage film-forming polycondensation reactor of a polymer liquid-phase viscosity-increasing device of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic diagram of two dual-stage film-forming polycondensation reactors in series.
100. A double-stage film-forming polycondensation reactor; 1. a barrel; 2. a film forming assembly; 3. a feeding section; 4. a plasticizing section; 5. a dynamic mixing section; 6. a barrier section; 7. a film forming reaction section; 8. a metering section; 9. a temperature control assembly; 10. devolatilizing; 11. a negative pressure system; 12. a heating block; 13. a cooling water passage; 14. and (4) feeding a material inlet.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-3, the utility model discloses a polymer liquid phase tackifying device, including two-step film forming polycondensation reactor 100 of series connection, two-step film forming polycondensation reactor 100 includes drive structure (not shown in the figure), barrel 1 and sets up three film forming component 2 of intermeshing in barrel 1, is side by side or triangle-shaped and arranges, the three film forming component 2 of drive structure drive rotates, and film forming component 2 divide into a plurality of functional areas, is a feed zone 3, a plastify section 4, six groups dynamic mixing section 5, barrier section 6 and film forming reaction section 7, a measurement section 8 along its axial in proper order, and every functional area corresponds a temperature control component 9 outside barrel 1, and barrel 1 corresponds the feed zone and is equipped with feed inlet 14, and barrel 1 corresponds film forming reaction section 7 and is equipped with devolatilization chamber 10, and devolatilization chamber 10 is connected with negative pressure system 11.
The utility model discloses a polymer liquid phase adhesion promoter is through the optimum combination of the functional area on three film forming component 2 and the film forming component 2 for the mixed abundant, the even that is heated of polymer fuse-element, it is difficult to take place local overheat at the homogeneous phase polycondensation in-process, has avoided fuse-element carbomorphism or coking scheduling problem, still has the effect of automatically cleaning. The film forming reaction section 7 corresponds to a devolatilization port 10 on the cylinder body 1 and is connected with a negative pressure system 11, the pressure of the polymer melt in the section is small, the film is rapidly formed through a forward spiral element, volatile substances generated by polymerization in the polymer melt are efficiently removed, the polycondensation reaction of the polymer melt is promoted, and the liquid phase tackifying of the polymer melt is realized.
Wherein the negative pressure system may be a vacuum pump.
The ratio L/D of the total length L of the film forming assembly to the outer diameter D thereof may be 58 to 62.
The length of the feed section 3 may be 2.5D and consists of two forward spiral elements, both of which have a lead of 1.25D, a helix angle of 21.7 °, a spiral groove depth of 0.175D, a spiral ridge thickness of 0.2D, and a clearance of 0.6mm between the spiral ridge and the inner wall of the barrel 1.
The length of the plasticizing section can be 1.5-2.5D and is composed of 2-4 forward spiral elements, the lead range is 0.5-1D, in an implementable mode, the length of the plasticizing section 4 is 1.75D and is composed of two forward spiral elements, the leads are respectively 1D and 0.75D along the material transmission direction, the lead is a 1D element, the spiral angle is 17.7 degrees, the depth of a spiral groove is 0.175D, the thickness of the spiral edge is 0.15D, and the clearance between the spiral edge and the inner wall of the cylinder body 1 is 0.6mm; the lead is 0.75D element, the helix angle is 16.0 degrees, the depth of the spiral groove is 0.175D, the thickness of the spiral edge is 0.12D, and the clearance between the spiral edge and the inner wall of the cylinder body 1 is 0.6mm; the lead is 0.5D element, the helix angle is 9.1 degrees, the depth of the helical groove is 0.175D, the thickness of the helical edge is 0.1D, and the clearance between the helical edge and the inner wall of the cylinder 1 is 0.6mm.
The feeding section 3 and the plasticizing section 4 are used for conveying, compressing and melting materials by using elements with gradually reduced leads.
The dynamic mixing section 5 is composed of 1-3 forward kneading block elements, the length of the forward kneading block elements is 1D, along the melt conveying direction, the number of the forward kneading block elements forming the dynamic mixing section is sequentially 1, 2, 3 and 3, the staggered angle of the forward kneading blocks of the first two dynamic mixing sections is 30 degrees, the staggered angles of the two forward kneading blocks of the middle two dynamic mixing sections are respectively 30 degrees and 60 degrees along the melt conveying direction, and the staggered angles of the three forward kneading blocks of the two rear dynamic mixing sections are respectively 30 degrees, 60 degrees and 90 degrees along the melt conveying direction.
As the viscosity increasing reaction gradually proceeds along the melt conveying direction, the melt viscosity is continuously increased, and the dynamic mixing section 5 makes the melt viscosity in the reactor uniform by gradually increasing the number of mixing elements.
The length of the barrier section 6 may be 0.5D and the barrier section 6 comprises a reverse helical element with a lead of 0.5D, in an implementable manner with a helix angle of 9.1 °, a helical groove depth of 0.175D, an element flight thickness of 0.06D, and a flight clearance of 0.25mm from the inner wall of the barrel 1.
The barrier section 6 allows the film forming reaction section 7 to maintain a low melt pressure by providing a reverse spiral element.
The length of the film forming reaction section 7 is 6.1D, the film forming reaction section consists of 4 sections of forward spiral elements, and the leads along the melt conveying direction are 1.8D, 1.5D and 1D respectively. Wherein the lead is 1.8D element, the helix angle is 32.8 degrees, the depth of the helical groove is 0.175D, the thickness of the helical edge is 0.16D, and the clearance between the helical edge and the inner wall of the cylinder 1 can be 0.6mm; the lead is 1.5D element, the helix angle is 27.4 degrees, the depth of the helical groove is 0.175D, the thickness of the helical ridge is 0.12D, and the clearance between the helical ridge and the inner wall of the cylinder body 1 can be 0.6mm; the lead is 1D element, the helix angle is 18.2 degrees, the depth of the helical groove is 0.175D, the thickness of the helical ridge is 0.1D, and the clearance between the helical ridge and the inner wall of the cylinder body 1 can be 0.6mm.
The film forming reaction section 7 uses a lead element larger than the front and rear sections, so that the melt is formed into a film at high frequency, the surface area of the melt is enlarged, the updating times are increased, small molecular volatile matters of byproducts of the tackifying reaction are quickly removed, and the reaction is promoted to be carried out in the positive reaction direction.
The melt after viscosity increasing is uniformly and stably output through a small-lead repeating element.
The temperature control assembly 9 may include a heating block 12, a cooling water channel 13 wound outside the cylinder 1, and a temperature control sensor (not shown in the figure), the temperature of the melt in the cylinder 1 is controlled by the temperature control assembly 9, for example, the temperature of each functional region may be controlled by the temperature control assembly 9 as follows: feed section 3 and plasticizing section 4:160-320 ℃, barrier segment 6:220-315 ℃, film-forming reaction section 7:220-310 ℃, dynamic mixing section 5:230-315 ℃, metering section 8:220 to 320 ℃; the rotating speed of the film forming component 2 is 30-300r/min; the pressure of the negative pressure system 11 is controlled to be 0.2-0.9 atmosphere; the liquid phase tackifying time is 5 to 60 minutes; the viscosity of the polymer can be increased by 25-75%.
The utility model discloses a polymer liquid phase adhesion promoter use as follows: feeding polymer resin into a double-stage film-forming polycondensation reactor 100, plasticizing and melting the resin under the action of heating and shearing of a film-forming assembly 2 in a feeding section 3 and a plasticizing section 4, uniformly mixing a melt in a barrier section and a film-forming reaction section 7, carrying out polycondensation reaction, continuously removing micromolecule water generated by the reaction by a negative pressure system 11, promoting the polycondensation reaction to increase the viscosity of the polymer melt, finally entering the next double-stage film-forming polycondensation reactor 100 through a metering section 8, repeating the process, and finally conveying the melt to spinning/injection molding/granulation production lines and the like through the metering section 8.
The above is not relevant and is applicable to the prior art.
Although certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention, which is to be construed as broadly as the present invention will suggest themselves to those skilled in the art to which the invention pertains and which is susceptible to various modifications or additions and similar arrangements to the specific embodiments described herein without departing from the scope of the invention as defined in the appended claims. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like made to the above embodiments according to the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. A polymer liquid phase tackifying device is characterized in that: the device comprises a two-stage film forming polycondensation reactor which is connected in series, wherein the two-stage film forming polycondensation reactor comprises a driving structure, a cylinder body and three film forming components which are arranged in the cylinder body and meshed with each other, the three film forming components are arranged in a parallel or triangular mode, the driving structure drives the three film forming components to rotate, the film forming components are divided into a plurality of functional areas, a feeding section, a plasticizing section, six groups of dynamic mixing sections, a barrier section, a film forming reaction section and a metering section are sequentially arranged along the axial direction of the film forming components, each functional area outside the cylinder body corresponds to one temperature control component, and the cylinder body is provided with a feeding hole corresponding to the feeding section; the barrel, the film forming reaction section and the negative pressure pipeline form a devolatilization chamber, and the negative pressure pipeline is connected with a negative pressure system.
2. A polymer liquid phase tackifying apparatus according to claim 1 wherein: the ratio L/D of the total length L of the film forming assembly to the outer diameter D of the film forming assembly is 58-62.
3. A polymer liquid phase tackifying apparatus according to claim 1, wherein: the feed section was 2.5D in length and consisted of two forward spiral elements each having a lead of 1.25D.
4. A polymer liquid phase tackifying apparatus according to claim 2, wherein: the length of the plasticizing section is 1.5-2.5D, the plasticizing section consists of 2-4 forward spiral elements, and the lead range is 0.5-1D.
5. A polymer liquid phase tackifying apparatus according to claim 1 wherein: the dynamic mixing section consists of 1-3 forward kneading block elements, the length of each forward kneading block element is 1D, the number of the forward kneading block elements forming the dynamic mixing section is sequentially 1, 2, 3 and 3 along the melt conveying direction, the staggered angle of the forward kneading blocks of the first two dynamic mixing sections is 30 degrees, the staggered angles of the two forward kneading blocks of the middle two dynamic mixing sections are respectively 30 degrees and 60 degrees along the melt conveying direction, and the staggered angles of the three forward kneading blocks of the two rear dynamic mixing sections are respectively 30 degrees, 60 degrees and 90 degrees along the melt conveying direction.
6. A polymer liquid phase tackifying apparatus according to claim 1 wherein: the length of the barrier section is 0.5D, said barrier section consisting of one reverse helical element with a lead of 0.5D.
7. A polymer liquid phase tackifying apparatus according to claim 1 wherein: the length of the film forming reaction section is 6.1D, the film forming reaction section consists of 4 sections of forward spiral elements, and leads in the melt conveying direction are 1.8D, 1.5D and 1D respectively; wherein the lead is 1.8D element, the helix angle is 32.8 degrees, the depth of the helical groove is 0.175D, and the thickness of the helical ridge is 0.16D; the lead is 1.5D element, the helix angle is 27.4 degrees, the depth of the spiral groove is 0.175D, and the thickness of the spiral edge is 0.12D; the lead is 1D element, the helix angle is 18.2 degrees, the depth of the helical groove is 0.175D, and the thickness of the helical ridge is 0.1D.
8. A polymer liquid phase tackifying apparatus according to claim 1 wherein: the length of the metering section is 3-5D, the metering section consists of 6-8 sections of forward spiral elements, the lead range is 0.5-1D, and the last 3 forward spiral elements with leads of 0.5D are all used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221697686.0U CN217856193U (en) | 2022-06-30 | 2022-06-30 | Polymer liquid phase tackifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221697686.0U CN217856193U (en) | 2022-06-30 | 2022-06-30 | Polymer liquid phase tackifying device |
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| Publication Number | Publication Date |
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| CN217856193U true CN217856193U (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221697686.0U Active CN217856193U (en) | 2022-06-30 | 2022-06-30 | Polymer liquid phase tackifying device |
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| CN (1) | CN217856193U (en) |
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