Two-stage coating heterogeneous synchronous composite membrane preparation technology and device
阅读说明:本技术 一种两级涂覆异质同步复合膜制备技术及装置 (Two-stage coating heterogeneous synchronous composite membrane preparation technology and device ) 是由 廖建 于 2019-11-20 设计创作,主要内容包括:本发明公开了一种两级涂覆异质同步复合膜制备技术,首先将高分子材料和添加剂材料溶解于溶剂中或加热熔融搅拌形成铸膜液,所述溶剂为该高分子材料的良溶剂,再将铸膜液通过特别设计的两级涂覆喷丝板作为成膜甬道挤出,其两级涂覆喷丝板包含多个出丝孔,此两级涂覆异质同步复合膜制备技术及装置,区别于现有技术,其生产出来的中空纤维膜的粘接力得到提升,强度增大,且在过滤精度高的同时,出水量也更大,同时,通过设置的质检装置,能够使得成品膜质检过程变得简单,有效减少了繁杂的工序,从而有效提高了成品膜生产过程中的质检效率,进而有效提高了中空纤维膜的生产加工效率,有效降低了生产成本。(The invention discloses a preparation technology of a two-stage coating heterogeneous synchronous composite membrane, which comprises the steps of firstly dissolving a high molecular material and an additive material in a solvent or heating, melting and stirring to form a membrane casting solution, wherein the solvent is a good solvent of the high molecular material, and then extruding the membrane casting solution through a specially designed two-stage coating spinneret plate as a membrane forming channel, wherein the two-stage coating spinneret plate comprises a plurality of filament outlet holes, the preparation technology and the device of the two-stage coating heterogeneous synchronous composite membrane are different from the prior art, the bonding force of a produced hollow fiber membrane is improved, the strength is increased, the water yield is higher while the filtering precision is high, meanwhile, the quality inspection process of the finished product membrane can be simplified through the arranged quality inspection device, the complex processes are effectively reduced, the quality inspection efficiency in the production process of the finished product membrane is effectively improved, and the production and processing efficiency of the hollow fiber membrane is effectively improved, effectively reducing the production cost.)
1. A two-stage coating heterogeneous synchronous composite membrane preparation technology comprises the steps of firstly dissolving a high polymer material and an additive material in a solvent or heating, melting and stirring to form a membrane casting solution, wherein the solvent is a good solvent of the high polymer material, then extruding the membrane casting solution through a specially designed two-stage coating spinneret plate serving as a membrane forming channel, wherein the two-stage coating spinneret plate comprises a plurality of filament outlet holes, the two-stage coating spinneret plate is contacted with a solidification solution or cooled to perform phase inversion after being extruded, sampling quality inspection is performed on a converted finished product, the quality inspection of the finished product is mainly realized through a supporting base (1), a tensile testing machine (2), a weighing mechanism (3), a filtering mechanism (4), a quantitative water tank (5) and a conducting mechanism (6), and after the quality inspection is performed on the finished product, the preparation of the two-stage coating heterogeneous synchronous composite.
2. The preparation technology of a two-stage coating heterogeneous synchronous composite membrane according to claim 1, characterized in that: the good solvent of the high polymer comprises at least one of N, N-dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, dimethyl sulfoxide, acetone, tetrahydrofuran and triethyl phosphate.
3. The preparation technology of a two-stage coating heterogeneous synchronous composite membrane according to claim 2, characterized in that: the high polymer material is polyether sulfone, polyethylene, polypropylene, polytetrafluoroethylene, polyacrylonitrile, polyvinyl chloride, polyimide or polyvinylidene fluoride and the like.
4. A two-stage coating heterogeneous synchronous composite membrane preparation technology according to claim 3, characterized in that: the additive material is at least one of absolute ethyl alcohol, polyethylene glycol, lithium nitrate and polyvinylpyrrolidone.
5. The technology for preparing a two-stage coating heterogeneous synchronous composite membrane according to claim 4, characterized in that: the dissolving temperature of the high polymer material and the additive material is 30-200 ℃, and the mass ratio of the high polymer material to the additive is 5-2.
6. The two-stage coating heterogeneous synchronous composite membrane preparation technology according to claim 5, characterized in that: the components in the coagulation solution comprise at least one of N-methylpyrrolidone, water, ethanol, glycerol, heptane and pentane, and the temperature of the coagulation bath is maintained at 10-100 deg.C, especially 30-80 deg.C.
7. The two-stage coating heterogeneous synchronous composite membrane preparation technology according to claim 6, characterized in that: the temperature of the core liquid is 20-90 ℃.
8. The two-stage coating heterogeneous synchronous composite membrane preparation technology according to claim 7, characterized in that: the two-stage coating heterogeneous synchronous composite hollow fiber membrane is soaked in a solution at the temperature of 20-60 ℃ for 20-50 hours, and meanwhile, the two-stage coating heterogeneous synchronous composite hollow fiber membrane is soaked in mixed glycerol water with the volume ratio of 0.2-2 for 20-40 hours for hole protection treatment.
9. The preparation device of the two-stage coating heterogeneous synchronous composite membrane according to claim 8, wherein the tensile testing machine (2) is mounted on the top of one end of the supporting base (1) through a bracket, the weighing mechanism (3) is arranged on the top of the supporting base (1), the filtering mechanism (4) is arranged on the top of the weighing mechanism (3), the quantitative water tank (5) is positioned above the filtering mechanism (4), the conducting mechanism (6) is positioned between the filtering mechanism (4) and the quantitative water tank (5), and the quantitative water tank (5) is fixedly communicated with the filtering mechanism (4) through the conducting mechanism (6).
Technical Field
The invention relates to the technical field of hollow fiber membrane preparation, in particular to a preparation technology and a device of a two-stage coating heterogeneous synchronous composite membrane.
Background
Along with the increasingly outstanding environmental problems in recent years, the water resource problem is paid more and more attention, the membrane technology is widely applied to the field of water treatment due to the characteristics of high treatment efficiency, small occupied area, long service life and the like, and particularly, the membrane technology is used for replacing a traditional secondary sedimentation tank to stabilize water outlet and ensure higher sludge concentration at the same time.
However, the conventional spinneret plates for production generally can only realize single-layer coating or interval multi-layer coating, and the spinneret plates have the following problems: (1) the improvement effect on the product performance is small; (2) the coating is carried out at intervals and in multiple layers, so that the preparation process is complicated; (3) the production cost is high, and the single-layer or two-layer composite hollow fiber membrane prepared correspondingly has the following problems: (1) the performance of the film product is single, and the quality is not improved well; (2) the coating is carried out by adopting multiple layers at intervals, so that the adhesion among the layers is poor and the layers are easy to peel; (3) the production process is complex, the efficiency is low, meanwhile, when the quality inspection is carried out in the prior art, the filtration performance detection and the tensile strength performance detection need to be carried out on the membrane component respectively, and when the filtration performance detection and the tensile strength detection are carried out respectively, the membrane component needs to be disassembled and assembled for many times, so that the inconvenience is very high, the detection process is complicated, the quality inspection efficiency in the normal production process is influenced, and further the production and processing efficiency of finished products is influenced.
Disclosure of Invention
The invention aims to provide a two-stage coating heterogeneous synchronous composite membrane preparation technology and a two-stage coating heterogeneous synchronous composite membrane preparation device which have better performance and are convenient to prepare, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a two-stage coating heterogeneous synchronous composite membrane preparing technique includes dissolving high-molecular material and additive material in solvent or heating, melting and stirring to form membrane-casting liquid, using the said solvent as good solvent of the high-molecular material, extruding the membrane-casting liquid through specially designed two-stage coating spinneret plate as membrane-forming channel, contacting with solidification solution or cooling to generate phase inversion, sampling and quality testing the converted product, testing the quality of the product by supporting base, tensile testing machine, weighing mechanism, filtering mechanism, quantitative water tank and conducting mechanism, testing the quality of the product, completing two-stage coating heterogeneous synchronous composite hollow fiber membrane preparation, so that the bonding force of the hollow fiber membrane is improved, the strength is increased, and the filtering precision is high, the water yield is also bigger, simultaneously, through the quality inspection device who sets up, can make finished product membrane quality testing process become simple, has effectively reduced numerous and diverse process to effectively improve the quality testing efficiency in the finished product membrane production process, and then effectively improved the production machining efficiency of hollow fiber membrane, effectively reduced manufacturing cost.
Preferably, the good solvent for the high polymer includes at least one of N, N-dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, dimethylsulfoxide, acetone, tetrahydrofuran, and triethyl phosphate.
Preferably, the polymer material is polyether sulfone, polyethylene, polypropylene, polytetrafluoroethylene, polyacrylonitrile, polyvinyl chloride, polyimide, polyvinylidene fluoride or the like.
Preferably, the additive material is at least one of absolute ethyl alcohol, polyethylene glycol, lithium nitrate and polyvinylpyrrolidone.
Preferably, the dissolving temperature of the high polymer material and the additive material is 30-200 ℃, and the mass ratio of the high polymer material to the additive is 5-2.
Preferably, the components in the coagulation solution comprise at least one of N-methylpyrrolidone, water, ethanol, glycerol, heptane and pentane, and the temperature of the coagulation bath is maintained at 10-100 ℃, in particular 30-80 ℃.
Preferably, the bore fluid temperature is 20-90 ℃.
Preferably, the two-stage coating heterogeneous synchronous composite hollow fiber membrane is soaked in a solution at the temperature of 20-60 ℃ for 20-50 hours, and meanwhile, the two-stage coating heterogeneous synchronous composite hollow fiber membrane is soaked in mixed glycerol water with the volume ratio of 0.2-2 for 20-40 hours for hole protection treatment.
Preferably, a synchronous complex film preparation facilities of two-stage coating heterogeneous, tensile testing machine passes through the support mounting and supports base one end top, weighing machine sets up and is supporting the base top, filtering mechanism sets up at the weighing machine top, the ration water tank is located the filtering mechanism top, conduction mechanism is located between filtering mechanism and the ration water tank, just the ration water tank is through the fixed intercommunication of conduction mechanism and filtering mechanism.
Compared with the prior art, the invention has the beneficial effects that:
compared with the prior art, the invention has the advantages that the bonding force of the produced hollow fiber membrane is improved, the strength is increased, the water yield is higher while the filtration precision is high, meanwhile, the quality inspection process of the finished membrane is simplified through the arranged quality inspection device, and the complicated processes are effectively reduced, so that the quality inspection efficiency in the production process of the finished membrane is effectively improved, the production and processing efficiency of the hollow fiber membrane is effectively improved, and the production cost is effectively reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial side plan view of the present invention;
FIG. 3 is a partial perspective view of FIG. 2 according to the present invention;
FIG. 4 is a partial schematic view of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of a filter membrane fixing member according to the present invention;
FIG. 6 is a schematic view of a filter cartridge assembly according to the present invention;
FIG. 7 is a schematic view of an auxiliary connecting cylinder according to the present invention;
FIG. 8 is a schematic view of a portion of the structure of FIG. 7 in accordance with the present invention;
FIG. 9 is a side, partially cross-sectional, plan view of the present invention, as illustrated in FIG. 8;
fig. 10 is a schematic structural diagram of a conduction mechanism according to the present invention.
In the figure: 1-a support base; 2-a tensile testing machine; 3-a weighing mechanism; 4-a filtering mechanism; 5-a quantitative water tank; 6-conducting mechanism; 7-weighing support plate; 8-a weighing sensor; 9-orienting the telescopic rod; 10-a filter cartridge element; 11-auxiliary connecting cylinder; 12-a directional slide rail; 13-a directional slider; 14-filter membrane fixing means; 15-inner cylinder; 16-an outer barrel; 17-water inlet through holes; 18-mounting a collar; 19-stretching the fixed seat; 20-a fixed collar; 21-conducting collar; 22-a conduit; 23-Water inlet manifold.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: a two-stage coating heterogeneous synchronous composite membrane preparation technology comprises the steps of firstly dissolving a high polymer material and an additive material in a solvent or heating, melting and stirring to form a membrane casting solution, wherein the solvent is a good solvent of the high polymer material, then extruding the membrane casting solution through a specially designed two-stage coating spinneret plate serving as a membrane forming channel, wherein the two-stage coating spinneret plate comprises a plurality of filament outlet holes, contacting or cooling with a solidification solution after extrusion to generate phase inversion, sampling and quality inspection are carried out on an inverted finished product, the quality inspection of the finished product is mainly realized through a supporting
The good solvent of the high polymer comprises at least one of N, N-dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, dimethyl sulfoxide, acetone, tetrahydrofuran and triethyl phosphate.
The high polymer material is polyether sulfone, polyethylene, polypropylene, polytetrafluoroethylene, polyacrylonitrile, polyvinyl chloride, polyimide or polyvinylidene fluoride and the like.
The additive material is at least one of absolute ethyl alcohol, polyethylene glycol, lithium nitrate and polyvinylpyrrolidone.
The dissolving temperature of the high polymer material and the additive material is 30-200 ℃, and the mass ratio of the high polymer material to the additive is 5-2.
The components in the coagulation solution comprise at least one of N-methylpyrrolidone, water, ethanol, glycerol, heptane and pentane, and the temperature of the coagulation bath is maintained at 10-100 deg.C, especially 30-80 deg.C.
The temperature of the core liquid is 20-90 ℃.
The two-stage coating heterogeneous synchronous composite hollow fiber membrane is soaked in a solution at the temperature of 20-60 ℃ for 20-50 hours, and meanwhile, the two-stage coating heterogeneous synchronous composite hollow fiber membrane is soaked in mixed glycerol water with the volume ratio of 0.2-2 for 20-40 hours for hole protection treatment.
A two-stage coating heterogeneous synchronous composite membrane preparation device, a
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It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.