CN106807319B - Micro-channel molecular collision in-situ polymerization fiber surface modification device and method - Google Patents
Micro-channel molecular collision in-situ polymerization fiber surface modification device and method Download PDFInfo
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- CN106807319B CN106807319B CN201710168708.1A CN201710168708A CN106807319B CN 106807319 B CN106807319 B CN 106807319B CN 201710168708 A CN201710168708 A CN 201710168708A CN 106807319 B CN106807319 B CN 106807319B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2405—Stationary reactors without moving elements inside provoking a turbulent flow of the reactants, such as in cyclones, or having a high Reynolds-number
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/02—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fibres, slivers or rovings
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/02—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin
- D06M14/04—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
Abstract
The invention provides a device and a method for modifying the surface of in-situ polymerized fiber based on micro-channel molecular collision, which utilizes the micro-channel molecular collision technology to modify the surface of the in-situ polymerized PVC fiber, wherein the device comprises a shell and a rotating shaft, wherein the shell comprises a gas inlet, a liquid inlet, a gas outlet, a runner upper part and a liquid outlet, and the mixture of a gas, liquid and solid multiphase system containing plant fiber, an initiator and water is subjected to molecular collision with a vinyl chloride monomer which is counter-flowed through a high-speed rotating runner; the zigzag structure on the surface of the runner enables the solid-liquid mixture to be broken into small liquid drops, and the specific surface area of reaction contact is increased. Thereby realizing that the PVC is coated with the plant fiber to form the plant fiber-based composite material. The invention greatly strengthens the mass and heat transfer process, realizes the effective preparation of the plant fiber-based composite material, greatly reduces the volume of equipment, increases the yield and reduces the cost.
Description
Technical Field
The invention belongs to the advanced manufacturing field of high polymer materials, and relates to a fiber surface modification technology, in particular to a micro-channel molecule collision based in-situ polymerization fiber surface modification technology.
Background
The polymer material has the advantages of low price, easy processing, easy modification and the like, is widely used in various fields of science and technology, national defense construction and national economy, and is an indispensable material in modern society life. But the raw materials are mainly derived from conventional energy sources with limited reserves (such as petroleum, coal mines or other natural resources).
In face of this crisis, various countries in the world are actively researching and developing and utilizing "green materials" such as natural plant fibers, chitosan, chitin, and the like. Among them, natural plant fibers are attracting attention for their advantages of large yield, biodegradability, excellent performance, and the like. The synthesized natural plant fiber based composite material combines the advantages of natural plant fiber and synthetic resin, and replaces the application of synthetic resin in a certain range. However, the poor compatibility between the polar fiber and the nonpolar resin, and the degradation of the plant fiber during the processing process, etc. cause the degradation of the composite material performance, which restricts the popularization and application thereof. Therefore, it is urgent to find a new synthetic method of natural plant fiber based composite materials.
Disclosure of Invention
Aiming at the defects of the existing natural fiber-based composite material, a micro-channel molecule collision based in-situ polymerization fiber surface modification technology is provided.
The technical scheme of the invention is to modify the surface of the in-situ polymerized PVC modified fiber by utilizing a micro-channel molecular collision technology, and the specific scheme is as follows:
the invention relates to a micro-channel molecule collision in-situ polymerization fiber surface modification device, which comprises a shell and a rotating shaft. The housing includes a gas inlet, a liquid inlet, a gas outlet, an upper portion of the flow path, and a liquid outlet. The lower part of the runner is fixed on the rotating shaft. The gas outlet and the liquid inlet are positioned right above the shell, and the liquid outlet is positioned below the shell. The upper part of the runner and the shell are fixed at the position right below the liquid inlet and the gas outlet, the upper part of the runner is aligned with the gas outlet, and the liquid inlet and the upper part of the runner are kept at a certain height. The lower part of the runner is coaxial with the upper part of the runner, and a certain clearance is kept. The surface of the lower part of the runner is distributed with a zigzag structure. The rotating shaft extends out from the lower part of the shell and is sealed. The gas inlets are aligned with gaps at the upper part of the flow channel and the lower part of the flow channel and uniformly distributed along the circumferential direction of the shell so as to ensure that gas uniformly enters.
Taking polyvinyl chloride coated fiber as an example, a micro-channel molecule collision in-situ polymerization fiber surface modification method is adopted, wherein vinyl chloride monomer enters from a gas inlet through a shell, reaches the upper part of a channel and the outer outlet at the lower part of the channel, and flows from outside to inside along a gap. The solid-liquid mixture containing fiber, initiator and water flows from the liquid inlet to the right lower side, reaches the upper part of the runner and the inner inlet of the lower part of the runner, and flows from the inside to the outside along the gap. The rotating shaft drives the lower part of the runner to rotate at a high speed, the solid-liquid mixture contacts the lower part of the runner and is thrown outwards along the gap, the sawtooth structure on the surface of the lower part of the runner pulverizes the solid-liquid mixture into small liquid drops, the small liquid drops are collided with vinyl chloride monomer gas from outside to inside in a countercurrent way to carry out polymerization reaction, meanwhile, the polar polyvinyl chloride is collided with polar fibers, so that the generated polyvinyl chloride coated fibers are discharged along with liquid through the upper part of the runner and the outer inlet of the lower part of the runner, the residual vinyl chloride monomer gas is discharged through the liquid outlet. The structures of the upper part and the lower part of the flow channel can be reasonably designed to be favorable for improving the molecular collision efficiency. The sawtooth structure at the lower part of the runner controls the sawtooth degree on the principle of not blocking the fiber flow. The gas inlet is kept at a certain distance from the runner outlet so as to prevent the solid-liquid mixture from being thrown out of the gas inlet. The liquid inlet is angled to the housing so as to allow sufficient time to prevent rapid escape of vinyl chloride monomer gas.
The solid-liquid mixture undergoes the processes of motion crushing and countercurrent collision in the runner gap, so that the specific surface area is increased in the polymerization reaction, the reaction time is greatly prolonged, the mass and heat transfer process is greatly enhanced, the equipment volume is reduced, the safety and reliability are realized, and the yield of the fiber-based composite material is improved.
The invention relates to a micro-channel molecule collision in-situ polymerization fiber surface modification device and a method, which have the advantages that: (1) The specific surface area of reaction contact is increased, the reaction time is prolonged, and the mass and heat transfer process is greatly enhanced; (2) The generated polar polyvinyl chloride and polar plant fibers are utilized to carry out molecular collision in-situ polymerization, so that the polyvinyl chloride can be used for coating the plant fibers to form a fiber-based composite material; (3) The volume of the reaction equipment can be reduced, the yield can be increased, and the cost can be reduced.
Drawings
FIG. 1 is a schematic view of a micro-channel molecular collision in-situ polymerized fiber surface modification device according to the invention.
In the figure: 1-gas inlet, 2-shell, 3-liquid inlet, 4-gas outlet, 5-runner upper portion, 6-runner lower portion, 7-pivot, 8-liquid outlet.
Detailed Description
The invention relates to a micro-channel molecule collision in-situ polymerization fiber surface modification device, which is shown in figure 1 and comprises a shell 2 and a rotating shaft 7. The housing 2 includes a gas inlet 1, a liquid inlet 3, a gas outlet 4, a flow path upper portion 5, and a liquid outlet 8. The runner lower part 6 is fixed on the rotating shaft 7. The gas outlet 4 and the liquid inlet 3 are located directly above the housing 2, and the liquid outlet 8 is located below the housing 2. The upper part 5 of the flow channel is fixed with the housing 2 directly below the liquid inlet 3 and the gas outlet 4, the upper part 5 of the flow channel is aligned with the gas outlet 4, and the liquid inlet 3 and the upper part 5 of the flow channel are kept at a certain height. The runner lower part 6 is coaxial with the runner upper part 5 with a certain clearance. The surface of the runner lower part 6 is distributed with a zigzag structure. The rotary shaft 7 protrudes from the lower portion of the housing 2 and is sealed. The gas inlets 1 are aligned with gaps of the upper part 5 and the lower part 6 of the flow channel and uniformly distributed along the circumferential direction of the shell 2 so as to ensure that gas uniformly enters.
Taking polyvinyl chloride coated fiber as an example, according to the method for modifying the surface of the micro-channel molecular collision in-situ polymerized fiber, vinyl chloride monomer enters from a gas inlet 1 through a shell 2, reaches the outer outlets of the upper part 5 and the lower part 6 of the channel, and flows from outside to inside along gaps of the vinyl chloride monomer. The solid-liquid mixture containing the fiber, the initiator and the water flows through the liquid inlet 3 to the inner inlets of the runner upper part 5 and the runner lower part 6 from inside to outside along the gaps. The rotating shaft drives the runner lower part 6 to perform high-speed rotating motion, the solid-liquid mixture contacts the runner lower part 6 and is thrown outwards along the gap, the sawtooth structure on the surface of the runner lower part 6 pulverizes the solid-liquid mixture into small liquid drops, the small liquid drops are collided with vinyl chloride monomer gas from outside to inside in a countercurrent manner to perform polymerization reaction, meanwhile, the polar polyvinyl chloride is collided with polar fibers, and the generated polyvinyl chloride coated fibers are discharged along with liquid through the runner upper part 5 and the runner lower part 6 external inlets, are discharged through the liquid outlet 8, and the residual vinyl chloride monomer gas is discharged through the gas outlet 4. The structures of the runner upper part 5 and the runner lower part 6 can be reasonably designed to be favorable for improving the molecular collision efficiency. The zigzag structure of the runner lower part 6 controls the zigzag degree on the principle that the fiber flow is not hindered. The gas inlet 1 is kept at a certain distance from the runner outlet to prevent the solid-liquid mixture from being thrown out of the gas inlet 1. The liquid inlet 8 is angled with respect to the housing 2 so as to allow sufficient time to prevent the escape of vinyl chloride monomer gas.
According to the micro-channel molecular collision in-situ polymerization fiber surface modification device, a plurality of gas inlets 1 are uniformly distributed along the circumferential direction, so that the contact between gas and a solid-liquid mixture is increased, and the reaction is more thorough.
The solid-liquid mixture undergoes the processes of motion crushing and countercurrent collision in the runner gap, so that the specific surface area is increased in the polymerization reaction, the reaction time is greatly prolonged, the mass and heat transfer process is greatly enhanced, the equipment volume is reduced, the safety and reliability are realized, and the yield of the fiber-based composite material is improved.
Claims (4)
1. Micro-channel molecule collision in situ polymerization fiber surface modification device, its characterized in that: the device comprises a shell and a rotating shaft, wherein the shell comprises a gas inlet, a liquid inlet, a gas outlet, a runner upper part and a liquid outlet, the runner lower part is fixed on the rotating shaft, the gas outlet and the liquid inlet are positioned right above the shell, and the liquid outlet is positioned below the shell; the upper part of the runner and the shell are fixed at the position right below the liquid inlet and the gas outlet, the upper part of the runner is aligned with the gas outlet, and the liquid inlet and the upper part of the runner are kept at a certain height; the lower part of the runner is coaxial with the upper part of the runner, and a certain gap is kept; the surface of the lower part of the runner is distributed with a zigzag structure; the rotating shaft extends out from the lower part of the shell and is sealed; the gas inlet is aligned with the gap in the upper part of the flow channel and the gap in the lower part of the flow channel.
2. The microchannel molecular impact in-situ polymerized fiber surface modification device according to claim 1, wherein: the gas inlets are uniformly distributed along the circumferential direction of the shell.
3. The method for modifying the surface of the micro-channel molecule collision in-situ polymerization fiber adopts the micro-channel molecule collision in-situ polymerization fiber surface modifying device as claimed in claim 1 or claim 2, and is characterized in that: vinyl chloride monomer enters from the gas inlet through the shell, reaches the upper part of the runner and the outer outlet at the lower part of the runner, and flows from outside to inside along the gap; the solid-liquid mixture containing fiber, initiator and water flows from the liquid inlet to the right lower part, reaches the upper part of the runner and the inner inlet of the lower part of the runner, and flows from inside to outside along the gap; the rotating shaft drives the lower part of the runner to perform high-speed rotating motion, the solid-liquid mixture contacts the lower part of the runner and is thrown outwards along the gap, the sawtooth structure on the surface of the lower part of the runner pulverizes the solid-liquid mixture into small liquid drops, the small liquid drops are collided with vinyl chloride monomer gas from outside to inside in a countercurrent manner to perform polymerization reaction, meanwhile, the polar polyvinyl chloride collides with polar fibers, so that the generated polyvinyl chloride coated fibers are discharged along with liquid through the upper part of the runner and the outer inlet of the lower part of the runner, the residual vinyl chloride monomer gas is discharged through the liquid outlet; the gas inlet is kept at a certain distance from the runner outlet so as to prevent the solid-liquid mixture from being thrown out of the gas inlet.
4. The method for modifying the surface of the micro-channel molecular impact in-situ polymerized fiber according to claim 3, which is characterized in that: the liquid inlet is angled to the housing so as to allow sufficient time to prevent rapid escape of vinyl chloride monomer gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168708.1A CN106807319B (en) | 2017-03-21 | 2017-03-21 | Micro-channel molecular collision in-situ polymerization fiber surface modification device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710168708.1A CN106807319B (en) | 2017-03-21 | 2017-03-21 | Micro-channel molecular collision in-situ polymerization fiber surface modification device and method |
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| Publication Number | Publication Date |
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| CN106807319A CN106807319A (en) | 2017-06-09 |
| CN106807319B true CN106807319B (en) | 2023-04-28 |
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| DE102017008628A1 (en) * | 2017-09-14 | 2019-03-14 | Julius Montz Gmbh | Mass transfer machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB598531A (en) * | 1943-05-10 | 1948-02-20 | Jose Piazza | Improvements in centrifugal apparatus |
| CN2287992Y (en) * | 1997-03-07 | 1998-08-19 | 华南理工大学 | Gas axial-flow type rotary packed bed gas-liquid heat transfer mass transfer device |
| CN1415396A (en) * | 2001-10-30 | 2003-05-07 | 浙江工业大学 | Deflection of jet type revolving bed equipment in hyper gravity field |
| CN1686591A (en) * | 2005-02-24 | 2005-10-26 | 浙江工业大学 | Multilayer deflection type overgravity rotary bed device |
| CN101234261A (en) * | 2007-11-07 | 2008-08-06 | 浙江工业大学 | Concentric ring type cross current type hypergravity field swinging bed device |
| CN206631598U (en) * | 2017-03-21 | 2017-11-14 | 北京化工大学 | Fluid channel molecular collision in-situ polymerization fiber surface decorating device |
-
2017
- 2017-03-21 CN CN201710168708.1A patent/CN106807319B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB598531A (en) * | 1943-05-10 | 1948-02-20 | Jose Piazza | Improvements in centrifugal apparatus |
| CN2287992Y (en) * | 1997-03-07 | 1998-08-19 | 华南理工大学 | Gas axial-flow type rotary packed bed gas-liquid heat transfer mass transfer device |
| CN1415396A (en) * | 2001-10-30 | 2003-05-07 | 浙江工业大学 | Deflection of jet type revolving bed equipment in hyper gravity field |
| CN1686591A (en) * | 2005-02-24 | 2005-10-26 | 浙江工业大学 | Multilayer deflection type overgravity rotary bed device |
| CN101234261A (en) * | 2007-11-07 | 2008-08-06 | 浙江工业大学 | Concentric ring type cross current type hypergravity field swinging bed device |
| CN206631598U (en) * | 2017-03-21 | 2017-11-14 | 北京化工大学 | Fluid channel molecular collision in-situ polymerization fiber surface decorating device |
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| CN106807319A (en) | 2017-06-09 |
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