CN115262233B - Macromolecule antioxidant anti-condensation material capable of circularly absorbing and releasing moisture and preparation method thereof - Google Patents
Macromolecule antioxidant anti-condensation material capable of circularly absorbing and releasing moisture and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000009833 condensation Methods 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229920002521 macromolecule Polymers 0.000 title claims abstract description 19
- 239000003963 antioxidant agent Substances 0.000 title claims description 12
- 230000003078 antioxidant effect Effects 0.000 title claims description 12
- 239000000835 fiber Substances 0.000 claims abstract description 49
- 239000004744 fabric Substances 0.000 claims abstract description 45
- 229920000728 polyester Polymers 0.000 claims abstract description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims abstract description 34
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 27
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 229920001577 copolymer Polymers 0.000 claims abstract description 20
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 19
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 19
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000011056 potassium acetate Nutrition 0.000 claims abstract description 17
- 239000002861 polymer material Substances 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 239000000839 emulsion Substances 0.000 claims description 40
- 239000011521 glass Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 230000007480 spreading Effects 0.000 claims description 7
- 238000003892 spreading Methods 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 claims description 6
- 229920000463 Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) Polymers 0.000 claims description 5
- 229920001400 block copolymer Polymers 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229920006254 polymer film Polymers 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 15
- 230000005494 condensation Effects 0.000 description 11
- 239000002105 nanoparticle Substances 0.000 description 7
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- 238000012986 modification Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
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- 239000002274 desiccant Substances 0.000 description 3
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- 239000013585 weight reducing agent Substances 0.000 description 1
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/63—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing sulfur in the main chain, e.g. polysulfones
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- D—TEXTILES; PAPER
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
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- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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Abstract
The invention relates to a macromolecule oxidation-resistant anti-condensation material capable of circularly absorbing and releasing moisture, which is membranous, wherein polyester fiber cloth is attached in the anti-condensation material, and a porous macromolecule material is arranged on the outer side of the anti-condensation material to wrap the polyester fiber cloth; the high polymer material comprises the following raw material components in percentage by weight: 60-70% of polyether sulfone, 5-10% of nano magnesium oxide, 10-15% of nano silicon dioxide, 2-5% of potassium acetate and 10-15% of hydrophilic modified copolymer. The invention also discloses a preparation method of the material. The invention has the advantages of extremely strong moisture absorption performance, high strength, abrasion resistance and long service life, can release moisture slowly, stabilizes the surrounding temperature environment, and has extremely good anti-condensation effect.
Description
Technical Field
The invention relates to the technical field of anti-condensation materials, in particular to a macromolecule anti-oxidation anti-condensation material capable of circularly absorbing and releasing moisture and a preparation method thereof.
Background
The electrical equipment can generate heat and generate temperature difference with the surrounding environment in the use process, the condensation phenomenon is easy to generate under the condition of high ambient humidity, the generation of the condensation can influence the insulativity of the equipment, the circuit is caused to be short-circuited, parts in the equipment can be corroded, the performance of the equipment can be seriously influenced, and even the equipment is burnt. The condensation refers to the phenomenon that when the temperature reaches a certain value and the humidity is unchanged, the water vapor is saturated, and after the temperature is further reduced, condensation is separated out to form dew drops, namely the condensation phenomenon.
Currently, in order to ensure that electrical equipment is not affected by condensation problems, there are the following conventional improvements in addition to adding a temperature and humidity control system. The waterproof ventilation valve is arranged, so that the invasion of moisture and water is effectively isolated while the ventilation of the inside and outside of the cabinet body is realized; filling and sealing the cable hole, so as to ensure tightness; the double-layer structure is arranged, the heat-insulating material is added in the middle, and the temperature difference between the inside and the outside is reduced; the design of water storage and drainage structures is added, so that the water can be drained at any time in case of water accumulation; the desiccant is added. The conventional measures can increase the design difficulty of the electrical equipment, add a plurality of dampproof structures, increase the volume of the electrical equipment and are inconvenient to maintain. Although the desiccant can effectively solve the problems, the desiccant is irreversible in moisture absorption and needs to be replaced periodically, so that the cost is high and the maintenance is inconvenient.
In the prior art, there are technical schemes for solving the above problems by designing anti-condensation materials. For example, the Chinese patent with publication number of CN111704850A, entitled "anti-condensation material, and preparation method and application thereof" discloses an anti-condensation material which can effectively improve the problem of condensation. However, the preparation process of the material is complex, the moisture absorption and release performances are defective, and the material is used in humid southern areas and has unsatisfactory effects. For example, the Chinese patent with publication number of CN112592655A, entitled "fireproof anti-condensation material and preparation method thereof" adopts design of preparing super-hydrophobic outer surface to prevent condensation, but has no functions of moisture absorption and moisture release, aging occurs after long-term use, replacement is required, and preparation cost is high, and preparation process is complex.
Disclosure of Invention
Aiming at least one technical problem existing in the prior art, the invention provides a macromolecule antioxidant anti-condensation material capable of circularly absorbing and releasing moisture and a preparation method thereof. Has extremely strong hydroscopic property, high strength, abrasion resistance and long service life, can release moisture slowly, stabilizes the surrounding temperature environment and has extremely good anti-condensation effect.
The technical scheme for solving the technical problems is as follows: the macromolecule oxidation-resistant anti-condensation material capable of circularly absorbing and releasing moisture is membranous, wherein polyester fiber cloth is attached in the anti-condensation material, and porous macromolecule material is arranged on the outer side of the anti-condensation material to wrap the polyester fiber cloth; the high polymer material comprises the following raw material components in percentage by weight: 60-70% of polyether sulfone, 5-10% of nano magnesium oxide, 10-15% of nano silicon dioxide, 2-5% of potassium acetate and 10-15% of hydrophilic modified copolymer.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the polyester fiber cloth adopts hydrophobic polyester fibers.
Further, the particle size of the nano magnesium oxide is 100-120 nm.
Further, the particle size of the nano silicon dioxide is 60-80 nm.
Further, the hydrophilic modified copolymer is a PEO-PPO-PEO block copolymer, wherein the PEO content is 30%.
The invention also provides a preparation method of the macromolecule oxidation-resistant anti-condensation material capable of circularly absorbing and releasing moisture, which comprises the following steps,
s1, preparing a raw material solution: adding the formula amount of polyethersulfone into methylene dichloride to prepare a solution with the mass percent concentration of 2-5%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution;
s2, preparing emulsion: slowly dripping the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and the deionized water with the formula amount into the solution prepared in the step S1 under the stirring state to prepare emulsion;
s3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a glass container, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1-1.2 mm below the liquid level of the emulsion;
s4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment until a high polymer film is formed on the surface of the emulsion, taking out the film, cleaning and drying to obtain the anti-condensation film.
On the basis of the technical scheme, the invention can be improved as follows.
Further, in the step S1, the solution concentration is controlled to be 5%.
In step S2, the volume ratio of the deionized water to the raw material solution is 6-8:1.
In step S3, a square glass tank is used as the glass container, and a gap of 2mm or more is left between the glass container and the four walls of the tank after the polyester fiber cloth is placed.
In step S4, the ultrasonic power is controlled to 220-225W and the time is controlled to be more than 32 min.
The beneficial effects of the invention are as follows: the invention adopts the polymer material formed by coating the porous polyethersulfone membrane material on the outer layer of the hydrophobic polyester fiber cloth as the anti-condensation material, and the inorganic nano particles and the hydrophilic modifier are added, so that the invention has excellent hygroscopicity, can effectively absorb the moisture in the air and prevent the formation of condensation; according to the invention, polyether sulfone is adopted, and inorganic nano particles are added, so that the oxidation resistance of a high polymer material can be greatly enhanced, and after the inorganic nano particles are added, the water absorption performance of the anti-condensation material can be effectively enhanced, and the moisture release of the anti-condensation material is slower and uniform; after the polyester fiber cloth is added, the strength is obviously improved, and after the inorganic nano particles are added, the wear resistance can be effectively improved, and the service life is long.
Drawings
FIG. 1 is an electron microscopic view of an anti-condensation film of embodiment 3 of the present invention;
FIG. 2 is an electron microscopic view of the anti-dew film according to example 4 of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
The invention relates to a macromolecule anti-oxidation anti-condensation material capable of circularly absorbing and releasing moisture, which is membranous, wherein polyester fiber cloth is attached in the anti-condensation material, and a porous macromolecule material is arranged on the outer side of the anti-condensation material to wrap the polyester fiber cloth; the high polymer material comprises the following raw material components in percentage by weight: 60-70% of polyether sulfone, 5-10% of nano magnesium oxide, 10-15% of nano silicon dioxide, 2-5% of potassium acetate and 10-15% of hydrophilic modified copolymer.
Preferably, the polyester fiber cloth of the invention is hydrophobic polyester fiber cloth.
The invention forms a high-strength membrane material for preventing condensation by wrapping the polyether sulfone porous membrane on the outer layer of the polyester fiber cloth. The polyether sulfone porous membrane has good moisture absorption performance, the polyester fiber cloth is a hydrophobic material, and after the polyether sulfone porous membrane and the polyester fiber cloth are combined, moisture can be effectively absorbed when the humidity is high and the moisture condenses, so that condensation is prevented from being formed; and when the humidity is low, the hydrophobic polyester fiber cloth can promote the polyether sulfone porous membrane to release moisture, balance the surrounding temperature difference and simultaneously restore the water absorption capacity of the material. The addition of the polyester fiber cloth not only effectively improves the strength of the film, but also can play a role in promoting the release of moisture, and has unexpected technical effects.
In the invention, the introduction of inorganic nano particles obviously improves the performance of the porous membrane. The introduction of nano magnesium oxide not only improves the hydrophilicity of the porous membrane and the moisture absorption capacity of the porous membrane, but also has extremely strong oxidation resistance, and simultaneously can improve the wear resistance of the membrane. The nano silicon dioxide effectively enhances the adsorption capacity of the material, can obviously improve the moisture absorption rate of the material during moisture absorption, and can play a certain role in locking water during moisture release so that the moisture can be slowly released. Meanwhile, the nano silicon dioxide can also improve the wear resistance of the material. For the anti-condensation material, the prior art hopes that the material can absorb moisture and release moisture quickly, but the moisture release rate is too high, so that the ambient temperature changes, a temperature difference is formed, and the moisture is condensed again and absorbed by the material, thereby causing the deterioration of the moisture release effect.
The hydrophilic modified copolymer is added to further enhance the moisture absorption properties of the material and to retard the moisture release rate of the material. And the copolymer is adopted for modification, so that the structural strength of the material can be effectively improved, the adhesive force of the material is improved, and the material is not easy to fall off. Also has unexpected technical effects.
The potassium acetate is added to ensure that the inorganic nano particles have better dispersibility and prevent agglomeration in the preparation process, and the potassium acetate is not a surfactant and does not influence film formation.
The invention also has a preferred development on the basis of the embodiments described above.
Preferably, the particle size of the nano magnesium oxide is 100-120 nm.
Preferably, the particle size of the nano silicon dioxide is 60-80 nm.
Controlling the particle size of the nanoparticles is based on cost considerations on the one hand and material property modification on the other hand. By adopting the particle size, the wear resistance and the moisture absorption and release performance of the material can achieve the comprehensive best effect.
The invention also has a preferred development on the basis of the embodiments described above.
Preferably, the hydrophilic modified copolymer is a PEO-PPO-PEO block copolymer, wherein the PEO content is 30%.
The use of the above-mentioned modifier is based on the results of the study by the inventors. Many modifying agents capable of modifying the hydrophilicity of polyethersulfone are used, and the modifying effect of introducing a sulfonic acid group is optimal. In the case of PEO-PPO-PEO block copolymers, the use of copolymers with PEO content of 70% also significantly improved the hydrophilicity over copolymers with PEO content of 30%. However, the inventor finds that the moisture release of the anti-condensation material is also critical after researching the damp-heat environment. In a damp-heat environment, if the hydrophilicity of the material is too strong, the moisture can not be released, so that the moisture release is not smooth, and the subsequent anti-condensation performance of the material is affected. By adopting the copolymer with PEO content of 30%, the hydrophilic performance of the material can be improved by improving the contact angle of the film, the structural strength of the material can be effectively improved, and meanwhile, the hydrophilic performance of the material is improved only a limited extent, so that the moisture release performance of the material is not affected.
The invention also discloses a preparation method of the material.
The preparation method of the macromolecule antioxidant anti-condensation material capable of circularly absorbing and releasing moisture comprises the following steps,
s1, preparing a raw material solution: adding the formula amount of polyethersulfone into methylene dichloride to prepare a solution with the mass percent concentration of 2-5%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution;
s2, preparing emulsion: slowly dripping the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and the deionized water with the formula amount into the solution prepared in the step S1 under the stirring state to prepare emulsion;
s3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a glass container, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1-1.2 mm below the liquid level of the emulsion;
s4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment until a high polymer film is formed on the surface of the emulsion, taking out the film, cleaning and drying to obtain the anti-condensation film.
The invention adopts an ultrasonic mode to prepare the polyethersulfone membrane material, firstly prepares emulsion, then places fiber cloth, and finally forms membrane by ultrasonic. The whole preparation process is extremely simple and is easy to operate and control.
The invention also has a preferred development on the basis of the embodiments described above.
Preferably, in the step S1, the solution concentration is controlled to be 5%.
Preferably, in the step S2, the volume ratio of the dropwise added deionized water to the raw material solution is 6-8:1.
Preferably, in the step S3, the glass container is a square glass tank, and a gap of more than 2mm is left between the glass container and the walls of the tank after the polyester fiber is laid.
In step S4, the ultrasonic power is controlled to 220-225W and the time is controlled to be more than 32 min.
The preferable scheme can effectively increase the uniformity of the number of the holes in the membrane and the aperture, and the aperture can be controlled in a preferable range.
The following are specific embodiments of the invention.
Example 1
The anti-condensation film of this example was produced by the following procedure.
The polyether sulfone porous polymer material comprises the following raw material components in percentage by weight: 60% of polyether sulfone, 10% of nano magnesium oxide, 15% of nano silicon dioxide, 5% of potassium acetate and 10% of hydrophilic modified copolymer.
S1, preparing a raw material solution: adding the formula amount of polyethersulfone into methylene dichloride to prepare a solution with the mass percent concentration of 2%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution.
S2, preparing emulsion: taking 100mL of the solution prepared in the step S1, slowly dropwise adding the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and 600mL of deionized water in the formula amount under the stirring state, and preparing the emulsion.
S3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a glass container, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1mm below the liquid surface of the emulsion.
S4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment until a high polymer film is formed on the surface of the emulsion, taking out the film, cleaning and drying to obtain the anti-condensation film.
Example 2
The anti-condensation film of this example was produced by the following procedure.
The polyether sulfone porous polymer material comprises the following raw material components in percentage by weight: 67% of polyethersulfone, 5% of 120nm nano magnesium oxide, 10% of 60nm nano silicon dioxide, 3% of potassium acetate and 15% of Ep2 (PEO-PPO-PEO block copolymer with PEO content of 30%).
S1, preparing a raw material solution: adding the formula amount of polyethersulfone into dichloromethane to prepare a solution with the mass percent concentration of 3%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution.
S2, preparing emulsion: taking 100mL of the solution prepared in the step S1, slowly dropwise adding the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and 650mL of deionized water in the formula amount under the stirring state, and preparing the emulsion.
S3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a square glass groove, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1.1mm below the liquid level of the emulsion, and a gap of more than 2mm is reserved between the fiber cloth and the four walls of the groove.
S4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment, controlling the ultrasonic power to 225W and the time to be 32min, taking out the film, washing with deionized water, and vacuum drying to obtain the anti-condensation film.
Example 3
The anti-condensation film of this example was produced by the following procedure.
The polyether sulfone porous polymer material comprises the following raw material components in percentage by weight: 63% of polyether sulfone, 8% of 100nm nano magnesium oxide, 13% of 80nm nano silicon dioxide, 4% of potassium acetate and 12% of Ep2.
S1, preparing a raw material solution: adding the formula amount of polyethersulfone into dichloromethane to prepare a solution with the mass percent concentration of 5%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution.
S2, preparing emulsion: taking 100mL of the solution prepared in the step S1, slowly dropwise adding the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and 800mL of deionized water in the formula amount under the stirring state, and preparing the emulsion.
S3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a square glass groove, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1.2mm below the liquid level of the emulsion, and a gap of more than 2mm is reserved between the fiber cloth and the four walls of the groove.
S4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment, controlling the ultrasonic power to 224W for 38 minutes, taking out the film, washing with deionized water, and vacuum drying to obtain the anti-condensation film.
The anti-condensation film of this example was subjected to surface structure scanning by using a Czochralski TESCAN VEGA 3SBU scanning electron microscope, and the obtained electron microscope image was shown in FIG. 1. As can be seen from fig. 1, the porous membrane of this example has a better uniformity of pore diameter and a larger number of pores.
Example 4
The anti-condensation film of this example was produced by the following procedure.
The polyether sulfone porous polymer material comprises the following raw material components in percentage by weight: 70% of polyethersulfone, 6% of 110nm nano magnesium oxide, 11% of 70nm nano silicon dioxide, 2% of potassium acetate and 11% of Ep2.
S1, preparing a raw material solution: adding the formula amount of polyethersulfone into methylene dichloride to prepare a solution with the mass percent concentration of 4%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution.
S2, preparing emulsion: taking 100mL of the solution prepared in the step S1, slowly dropwise adding the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and 750mL of deionized water in the formula amount under the stirring state, and preparing into emulsion.
S3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a square glass groove, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1.2mm below the liquid level of the emulsion, and a gap of more than 2mm is reserved between the fiber cloth and the four walls of the groove.
S4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment, controlling the ultrasonic power to be 220W and the time to be 36min, taking out the film, washing the film with deionized water, and then vacuum drying to obtain the anti-condensation film.
The anti-condensation film of this example was subjected to surface structure scanning by using a Czochralski TESCAN VEGA 3SBU scanning electron microscope, and the obtained electron microscope image was shown in FIG. 2. As can be seen from fig. 2, the porous membrane of this example has a better uniformity of pore diameter and a larger number of pores.
The anti-condensation materials were tested for strength, abrasion resistance, moisture absorption and release properties by taking examples 1 to 4 as examples and taking the optimal examples of the patent technologies with publication numbers CN111704850a and CN108043367a as comparative examples. The detection results are shown in Table 1.
Among them, the detection of the moisture absorption and release properties adopts the detection method described in the patent publication No. CN111704850A, which is convenient for comparison with the comparative example. The abrasion resistance adopts a reciprocating mechanical friction mode, 100g of material is used as a raw material, plastic is used for reciprocating friction with the material for 24 hours, and the weight reduction of the material is measured.
As can be seen from the data in Table 1, the strength and wear resistance of the present invention are significantly better than those of the prior art, and the moisture absorption performance is excellent, and the moisture release rate is significantly slower and more uniform than that of the prior art.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
As can be seen from the data in Table 1, the strength and wear resistance of the present invention are significantly better than those of the prior art, and the moisture absorption performance is excellent, and the moisture release rate is significantly slower and more uniform than that of the prior art.
It is noted that relational terms such as first and second, and the like, if any, are 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. Moreover, 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. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The macromolecule oxidation-resistant anti-condensation material capable of circularly absorbing and releasing moisture is characterized in that the anti-condensation material is membranous, polyester fiber cloth is attached in the anti-condensation material, and porous macromolecule materials are arranged on the outer side of the anti-condensation material to wrap the polyester fiber cloth; the high polymer material comprises the following raw material components in percentage by weight: 60-70% of polyethersulfone, 5-10% of nano magnesium oxide, 10-15% of nano silicon dioxide, 2-5% of potassium acetate and 10-15% of hydrophilic modified copolymer;
the hydrophilic modified copolymer is PEO-PPO-PEO block copolymer, wherein the PEO content is 30%.
2. The polymeric antioxidant and anti-condensation material for cyclically absorbing and releasing moisture according to claim 1, wherein: the polyester fiber cloth adopts hydrophobic polyester fibers.
3. The polymeric antioxidant and anti-condensation material for cyclically absorbing and releasing moisture according to claim 1, wherein: the particle size of the nano magnesium oxide is 100-120 nm.
4. The polymeric antioxidant and anti-condensation material for cyclically absorbing and releasing moisture according to claim 1, wherein: the particle size of the nano silicon dioxide is 60-80 nm.
5. A method for preparing the macromolecule antioxidant and anti-condensation material capable of circularly absorbing and releasing moisture according to claims 1-4, which is characterized by comprising the following steps:
s1, preparing a raw material solution: adding the formula amount of polyethersulfone into dichloromethane to prepare a solution with the mass percent concentration of 2-5%, adding the formula amount of potassium acetate into the solution, and uniformly stirring to prepare a raw material solution;
s2, preparing emulsion: slowly dripping the hydrophilic modified copolymer, the nano magnesium oxide, the nano silicon dioxide and the deionized water with the formula amount into the solution prepared in the step S1 under the stirring state to prepare emulsion;
s3, adding polyester fiber cloth: pouring the emulsion prepared in the step S2 into a glass container, then spreading and fixing the polyester fiber cloth in the emulsion, wherein the placing position of the polyester fiber cloth is 1-1.2 mm below the liquid level of the emulsion;
s4, film preparation: and (3) placing the glass container in the step (S3) into ultrasonic equipment for ultrasonic treatment until a high polymer film is formed on the surface of the emulsion, taking out the film, cleaning and drying to obtain the anti-condensation film.
6. The method for preparing the macromolecule antioxidant and anti-condensation material capable of circularly absorbing and releasing moisture according to claim 5, wherein the method is characterized in that: in the step S1, the concentration of the solution is controlled to be 5%.
7. The method for preparing the macromolecule antioxidant and anti-condensation material capable of circularly absorbing and releasing moisture according to claim 5, wherein the method is characterized in that: in the step S2, the volume ratio of the dropwise added deionized water to the raw material solution is 6-8:1.
8. The method for preparing the macromolecule antioxidant and anti-condensation material capable of circularly absorbing and releasing moisture according to claim 5, wherein the method is characterized in that: in the step S3, a square glass groove is selected as the glass container, and a gap of more than 2mm is reserved between the glass container and the four walls of the groove after the polyester fiber is distributed.
9. The method for preparing the macromolecule antioxidant and anti-condensation material capable of circularly absorbing and releasing moisture according to claim 5, wherein the method is characterized in that: in the step S4, the ultrasonic power is controlled to be 220-225W, and the time is controlled to be more than 32 minutes.
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| CN102160970A (en) * | 2011-03-31 | 2011-08-24 | 天津大学 | Flux controllable anti-oxidation polyethersulfone nanofiltration membrane and preparation method thereof |
| CN107051235A (en) * | 2017-01-25 | 2017-08-18 | 东南大学 | A kind of preparation method and application of hydrophilic polyethersulfone milipore filter |
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| CN110559222A (en) * | 2019-05-14 | 2019-12-13 | 东方爱堡(北京)母婴健康科技有限公司 | moisturizing antioxidant gel and preparation method thereof |
| CN111704850A (en) * | 2020-07-03 | 2020-09-25 | 宁波葆尔新材料有限公司 | Anti-condensation material and preparation method and application thereof |
| CN112592655A (en) * | 2020-12-01 | 2021-04-02 | 国网湖南省电力有限公司 | Fireproof anti-condensation material and preparation method thereof |
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| GB2030573A (en) * | 1978-09-14 | 1980-04-10 | Dainichiseika Colore Chemicals | Hydrophilic polymer and process for producing the same |
| CN101259387A (en) * | 2007-12-19 | 2008-09-10 | 天津大学 | Controllable-flux protein-pollution-resistance poly (ether-sulfone) ultrafiltration membrane and preparation |
| CN102160970A (en) * | 2011-03-31 | 2011-08-24 | 天津大学 | Flux controllable anti-oxidation polyethersulfone nanofiltration membrane and preparation method thereof |
| CN107051235A (en) * | 2017-01-25 | 2017-08-18 | 东南大学 | A kind of preparation method and application of hydrophilic polyethersulfone milipore filter |
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