CN107497307A - A kind of preparation method of the special infiltrating and vaporizing membrane of perfume industry - Google Patents
A kind of preparation method of the special infiltrating and vaporizing membrane of perfume industry Download PDFInfo
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- CN107497307A CN107497307A CN201710928574.9A CN201710928574A CN107497307A CN 107497307 A CN107497307 A CN 107497307A CN 201710928574 A CN201710928574 A CN 201710928574A CN 107497307 A CN107497307 A CN 107497307A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/10—Cellulose; Modified cellulose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/74—Natural macromolecular material or derivatives thereof
Abstract
The invention discloses a kind of preparation method of the special infiltrating and vaporizing membrane of perfume industry, belong to field of polymer material preparing technology.Chitosan and water are stirred by the present invention, after standing swelling, heating stirring dissolving, obtain mixed liquor；By mixed liquor, solution of zinc sulfate, modified eggshell powder, nano-cellulose, it is stirred, vacuum defoamation, obtains into film liquid；Film forming liquid stream is prolonged on glass plate, and with scraper knifing, subsequent freeze-thaw circulation processing, then through vacuum freeze drying, the glass plate of prefabricated membrane must be loaded with；The glass plate for being loaded with prefabricated membrane is placed in the butyl titanate of 20~30 times of chitosan weight, constant temperature dipping, then drying, takes off film, produce infiltrating and vaporizing membrane.The special infiltrating and vaporizing membrane of perfume industry provided by the invention has excellent mechanical performance.
Description
Technical field
The invention discloses a kind of preparation method of the special infiltrating and vaporizing membrane of perfume industry, belongs to high polymer material and prepares skill
Art field.
Background technology
Membrane separation technique is the new and high technology of contemporary chemical field.Because it is the energy, resource, the ring of solution facing mankind
The new technology of the significant problems such as border, so achieving extremely rapid development in recent years, desalinate in seawater and brackish water, drink
With Water warfare, prepared by ultra-pure water, the supply of station boiler make-up water, gas purification and petrochemical industry, medicine, metallurgy, food
Light industry, the separation of biological product, purification and concentration etc. have played huge effect.
Infiltration evaporation membrane separation technique is a kind of new membrane separation technique.The technology is used for the separation of liquid mixture, its
Outstanding advantages are can to realize that the conventional methods such as distillation, extraction, absorption are difficult to the separation task completed with low energy consumption.It is special
Separation or the separation of indissociable nearly boiling point, constant boiling point mixture are difficult to suitable for conventional distillation；To organic solvent and mixing
The removing of minor amount of water in solvent, the separation to a small amount of organic pollution in waste water have it is obvious economically with technical advantage；
Reaction product can also constantly be removed, significantly improve reaction conversion ratio with chemical reaction coupling.Steamed with traditional azeotropic
Evaporate and compared with extracting rectifying, can save energy 1/3~1/2 using Pervaporation Technology, 50% of running cost less than traditional separation method.
Infiltration evaporation（PV）It is a kind of emerging membrane separation technique.PV is using feed liquid film upstream and downstream component chemical potential difference
Driving force realizes mass transfer, and selectivity is realized to the difference of different component compatibility and resistance to mass tranfer in feed liquid using film.Membrane material
That can PV processes realize energy-conservation, it is efficient the features such as key.
PV uses dense film, has the composite membrane or anisotropic membrane of dense layer surface.Material liquid enters membrane module, flows through film
Face, low pressure is kept on rear side of film.Because stoste side is different from the chemical potential of component on rear side of film, the chemical potential of stoste side component is high,
The chemical potential of component is low on rear side of film, so each component will be permeated by film to film rear side in stoste.Because being in low pressure on rear side of film,
So component, by being vaporized into steam after film, steam is taken away with vavuum pump or removed with the methods of inert gas purge, makes to ooze
Constantly carried out through journey.Each component is different by the speed of film in stoste, is separated through the fast component can of film from stoste
Out.The retentate flowed out from membrane module can be the product of the slower component of the higher transmission rates of purity.For certain
Mixed liquor for, infiltration rate depends primarily on the property of film.It can be made pair using appropriate membrane material and manufacture method
A kind of component transmission rates are fast, relatively seldom to another component infiltration rate, in addition close to zero film, therefore infiltration evaporation process
Can efficient separation of liquid mixtures.But traditional penetration vaporization film also has the problem of mechanical performance is bad, therefore, also
Infiltrating and vaporizing membrane need to further be studied.
The content of the invention
The present invention solves the technical problem of：The problem of film mechanical performance is bad is vaporized for traditional penetration, there is provided
A kind of preparation method of the special infiltrating and vaporizing membrane of perfume industry.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）It is 1 in mass ratio：50~1：100 are stirred chitosan and water, stand swelling 6~8h after, in temperature be 95~
Under the conditions of 100 DEG C, stirring and dissolving, mixed liquor is obtained；
（2）Count in parts by weight, by 100~120 portions of mixed liquors, 3~5 parts of solution of zinc sulfate, 8~10 parts of modified eggshell powder, 8
~10 parts of nano-celluloses, 8~10 parts of calcium bicarbonates, are stirred, vacuum defoamation, obtain into film liquid；
（3）Film forming liquid stream is prolonged on glass plate, and handled 3~5 times with scraper knifing, subsequent freeze-thaw circulation, then through true
Vacuum freecing-dry, the glass plate of prefabricated membrane must be loaded with；
（4）The glass plate for being loaded with prefabricated membrane is placed in the butyl titanate of 20~30 times of chitosan weight, constant temperature dipping, then passed through
Dry, take off film, produce infiltrating and vaporizing membrane.
Step（2）The modified eggshell powder is by eggshell powder and dopamine solution in mass ratio 1：50~1：100 is mixed
Immersion is closed to obtain.
Step（2）The nano-cellulose can also be modified nanometer cellulose, and specific method of modifying is as follows：By Nanowire
Dimension element and dopamine solution in mass ratio 1：50~1：100 mixing immersions, filtering, are fumigated, i.e., through the nitrogen containing butyl titanate
Obtain modified nanometer cellulose.
Step（2）Described vacuum defoamation condition is：Vacuum is 120~130Pa, and inclined heated plate is 40~50min.
Step（3）Described freeze-thaw circulation concretely comprises the following steps：After freezing 20~30s with liquid nitrogen spraying, in room temperature bar
Under part, 10~12h of naturally to thaw.
Step（4）The constant temperature is 60~80 DEG C.
The beneficial effects of the invention are as follows：
（1）For technical solution of the present invention in preparation process, chitosan and zinc sulfate crosslink reaction, are formed in system three-dimensional
Cross-linked network, and be modified eggshell powder and modified, internal active group quantity increase is soaked by dopamine solution, be advantageous to increase
The bond strength of strong chitosan molecule and graphite, in addition, there is corner angle and bulge-structure in modified eggshell powder self structure, and
With cavity, under random dispersion effect, single eggshell powder particle can be interspersed in multiple network structures, meanwhile, it is three-dimensional
Cross-linked network is affiliated on the corner angle and bulge-structure of eggshell powder particle, and multiple physical nodes are formed with three-dimensional crosslinked network,
So as to improve the mechanical strength of system, in use, when being acted on by external force, the interior friction of material can be effectively increased, is made
Mechanical energy is converted into thermal energy consumption and fallen, and effectively limits the large scale deformation of product under external force, there is product mechanical performance
Effect lifting；
（2）Technical solution of the present invention is by adding modified nanometer cellulose, on the one hand, modified nanometer cellulose shape in aqueous solvent
Into stable colloid, and there is good thixotropy, because the phase after solvation between microcrystal cellulose colloid there is hydrogen bond
Interaction, three-dimensional crosslinked network is formed, the interspersed crosslinking of cross-linked network formed with chitosan and zinc sulfate, improve system crosslinking
Density, product mechanical performance is set further to be lifted, and modified nanometer cellulose has good antioxygenic property, it is another
Aspect, in preparation process, nano-cellulose soaks through dopamine solution, enhances the absorption affinity of fiber surface, then by containing
Butyl titanate impregnates, in a heated condition, the calcium carbonate that calcium bicarbonate heat is decomposed, carbon dioxide and water, butyl titanate
Meet water to hydrolyze, form nano titanium oxide, uniform adsorption is improved in cellulose surface, roughness, between fiber
Mechanical snap power is improved, and product mechanical performance is effectively lifted, and nano titanium oxide has excellent anti-ultraviolet ageing in addition
Performance.
Embodiment
Dopamine solution in mass ratio 1 by eggshell powder with mass concentration for 2g/L：50~1：100 add No. 1 beaker
In, then beaker immigration digital display tested the speed constant temperature blender with magnetic force, it is 35~38 DEG C in temperature, rotating speed is 400~500r/min bars
Under part, 2~3h of immersion is stirred, obtains soak, then soak is filtered, produces modified eggshell powder；By nano-cellulose
With the dopamine solution in mass ratio 1 that mass concentration is 2g/L：50~1：100 add single-necked flasks in, in temperature be 35~38
DEG C, under the conditions of rotating speed is 400~500r/min, 2~3h of immersion is stirred, obtains immersion mixed liquor, then mixed liquor mistake will be soaked
Filter, is obtained filter residue, then filter residue is placed in fluidized-bed reactor, then be passed through with 100~200mL/min speed into reactor
The nitrogen for being loaded with butyl titanate reacts 30~40min, produces modified nanometer cellulose；It is 1 in mass ratio：50~1：100 will
Chitosan and water are added in No. 2 beakers, after being stirred 10~20min with glass bar, stood under room temperature condition swelling 6~
8h, No. 2 beakers are then moved into digital displays and tested the speed constant temperature blender with magnetic force, are 95~100 DEG C in temperature, rotating speed is 300~500r/
Under the conditions of min, constant temperature 2~4h of stirring and dissolving, after naturally cool to room temperature, mixed liquor is obtained；Count in parts by weight, by 100~120
Portion mixed liquor, 3~5 parts of mass fractions are 10~20% parts of zinc sulfate, 8~10 parts of modified eggshell powder, 8~10 parts of modified Nanos
Cellulose, 8~10 parts of calcium bicarbonates, add in batch mixer, under the conditions of temperature is 45~55 DEG C, constant temperature is stirred 2~4h
Afterwards, vacuum degasing machine is transferred to, under the conditions of vacuum is 120~130Pa, 40~50min of vacuum defoamation, discharging, obtains into film liquid；
Glass plate is taken, after being wiped 3~5 times with absolute ethyl alcohol, then is washed with deionized 3~5 times, obtains cleaned glass plate, then by film forming
Liquid stream is prolonged in cleaned glass plate surface, and with scraper knifing, obtains film carrier glass plate, then freezes film carrier glass plate with liquid nitrogen spraying
20~30s, 10~12h of naturally to thaw under room temperature condition, such freeze-thaw circulation 3~5 times, then last time is thawed
Film carrier glass plate afterwards is moved into vacuum freezing drying oven, dries 6~8h, must be loaded with the glass plate of prefabricated membrane；It will be loaded with prefabricated
The glass plate of film is placed in the butyl titanate of 20~30 times of chitosan weight, under the conditions of temperature is 60~80 DEG C, constant temperature leaching
1~2h of stain, the glass plate for being loaded with prefabricated membrane must be impregnated, the glass plate that dipping is loaded with to prefabricated membrane is moved into baking oven, is in temperature
After drying 6~8h under the conditions of 80~90 DEG C, film is taken off, produces the special infiltrating and vaporizing membrane of perfume industry.It is described to be loaded with butyl titanate
Nitrogen in, butyl titanate volume content be 5~6%.
Example 1
Dopamine solution in mass ratio 1 by eggshell powder with mass concentration for 2g/L：100 add in No. 1 beakers, then by beaker
Move into digital display to test the speed constant temperature blender with magnetic force, be 38 DEG C in temperature, under the conditions of rotating speed is 500r/min, be stirred immersion 3h,
Soak is obtained, then soak is filtered, produces modified eggshell powder；Dopamine by nano-cellulose with mass concentration for 2g/L
Solution in mass ratio 1：100 add in single-necked flask, are 38 DEG C in temperature, under the conditions of rotating speed is 500r/min, are stirred leaching
3h is steeped, obtains immersion mixed liquor, then immersion mixed liquor is filtered, filter residue is obtained, then filter residue is placed in fluidized-bed reactor, then with
200mL/min speed is passed through the nitrogen reaction 40min for being loaded with butyl titanate into reactor, produces modified nano fiber
Element；It is 1 in mass ratio：100 add chitosan and water in No. 2 beakers, after being stirred 20min with glass bar, in room temperature bar
Swelling 8h is stood under part, No. 2 beakers then are moved into digital displays tests the speed constant temperature blender with magnetic force, is 100 DEG C in temperature, rotating speed is
Under the conditions of 500r/min, constant temperature stirring and dissolving 4h, after naturally cool to room temperature, mixed liquor is obtained；Count in parts by weight, by 120 parts
Mixed liquor, 5 parts of mass fractions are 20% part of zinc sulfate, 10 parts of modified eggshell powder, 10 parts of modified nanometer celluloses, 10 parts of carbonic acid
Hydrogen calcium, add in batch mixer, under the conditions of temperature is 55 DEG C, after constant temperature is stirred 4h, vacuum degasing machine is transferred to, in vacuum
Under the conditions of 130Pa, vacuum defoamation 50min, discharging, film liquid is obtained into；Glass plate is taken, after being wiped 5 times with absolute ethyl alcohol, then is spent
Ion water washing 5 times, cleaned glass plate is obtained, then film forming liquid stream is prolonged in cleaned glass plate surface, and with scraper knifing, obtain film carrier
Glass plate, then with liquid nitrogen spraying freezing film carrier glass plate 30s, the naturally to thaw 12h under room temperature condition, such freeze-thaw
Circulation 5 times, then the film carrier glass plate after last time defrosting is moved into vacuum freezing drying oven, 8h is dried, must be loaded with prefabricated
The glass plate of film；The glass plate for being loaded with prefabricated membrane is placed in the butyl titanate of 30 times of chitosan weight, in temperature be 80 DEG C
Under the conditions of, constant temperature dipping 2h, the glass plate for being loaded with prefabricated membrane must be impregnated, the glass plate that dipping is loaded with to prefabricated membrane moves into baking oven
In, after drying 8h under the conditions of being 90 DEG C in temperature, film is taken off, produces the special infiltrating and vaporizing membrane of perfume industry.It is described to be loaded with metatitanic acid four
In the nitrogen of butyl ester, butyl titanate volume content is 6%.
Example 2
Dopamine solution in mass ratio 1 by nano-cellulose with mass concentration for 2g/L：100 add in single-necked flask, Yu Wen
Spend for 38 DEG C, under the conditions of rotating speed is 500r/min, be stirred immersion 3h, obtain immersion mixed liquor, then immersion mixed liquor is filtered,
Filter residue is obtained, then filter residue is placed in fluidized-bed reactor, then be passed through with 200mL/min speed into reactor and be loaded with metatitanic acid
The nitrogen reaction 40min of four butyl esters, produces modified nanometer cellulose；It is 1 in mass ratio：Chitosan and water are added No. 2 burnings by 100
In cup, after being stirred 20min with glass bar, swelling 8h is stood under room temperature condition, No. 2 beakers then are moved into digital display tests the speed
Constant temperature blender with magnetic force, in temperature be 100 DEG C, rotating speed be 500r/min under the conditions of, constant temperature stirring and dissolving 4h, after naturally cool to
Room temperature, obtain mixed liquor；Count in parts by weight, by 120 portions of mixed liquors, 5 parts of mass fractions are 20% part of zinc sulfate, 10 parts of egg-shell meals
End, 10 parts of modified nanometer celluloses, 10 parts of calcium bicarbonates, add in batch mixer, under the conditions of temperature is 55 DEG C, constant temperature stirring is mixed
After closing 4h, vacuum degasing machine is transferred to, under the conditions of vacuum is 130Pa, vacuum defoamation 50min, discharging, obtains into film liquid；Take glass
Glass plate, after being wiped 5 times with absolute ethyl alcohol, then it is washed with deionized 5 times, obtains cleaned glass plate, then film forming liquid stream is prolonged in clean
Net glass pane surface, and with scraper knifing, film carrier glass plate is obtained, film carrier glass plate 30s then is freezed with liquid nitrogen spraying, then at room
Naturally to thaw 12h under the conditions of temperature, such freeze-thaw circulation 5 times, then will last time thaw after film carrier glass plate move into it is true
In vacuum freecing-dry case, 8h is dried, the glass plate of prefabricated membrane must be loaded with；The glass plate for being loaded with prefabricated membrane is placed in chitosan weight
In 30 times of butyl titanate, under the conditions of temperature is 80 DEG C, constant temperature dipping 2h, the glass plate for being loaded with prefabricated membrane must be impregnated, will
The glass plate that dipping is loaded with prefabricated membrane is moved into baking oven, after drying 8h under the conditions of being 90 DEG C in temperature, is taken off film, is produced perfume industry
Special infiltrating and vaporizing membrane.Described to be loaded with the nitrogen of butyl titanate, butyl titanate volume content is 6%.
Example 3
Dopamine solution in mass ratio 1 by eggshell powder with mass concentration for 2g/L：100 add in No. 1 beakers, then by beaker
Move into digital display to test the speed constant temperature blender with magnetic force, be 38 DEG C in temperature, under the conditions of rotating speed is 500r/min, be stirred immersion 3h,
Soak is obtained, then soak is filtered, produces modified eggshell powder；It is 1 in mass ratio：Chitosan and water are added No. 2 burnings by 100
In cup, after being stirred 20min with glass bar, swelling 8h is stood under room temperature condition, No. 2 beakers then are moved into digital display tests the speed
Constant temperature blender with magnetic force, in temperature be 100 DEG C, rotating speed be 500r/min under the conditions of, constant temperature stirring and dissolving 4h, after naturally cool to
Room temperature, obtain mixed liquor；Count in parts by weight, by 120 portions of mixed liquors, 5 parts of mass fractions are 20% part of zinc sulfate, 10 portions of modified eggs
Shell powder, 10 parts of nano-celluloses, 10 parts of calcium bicarbonates, add in batch mixer, under the conditions of temperature is 55 DEG C, constant temperature stirring is mixed
After closing 4h, vacuum degasing machine is transferred to, under the conditions of vacuum is 130Pa, vacuum defoamation 50min, discharging, obtains into film liquid；Take glass
Glass plate, after being wiped 5 times with absolute ethyl alcohol, then it is washed with deionized 5 times, obtains cleaned glass plate, then film forming liquid stream is prolonged in clean
Net glass pane surface, and with scraper knifing, film carrier glass plate is obtained, film carrier glass plate 30s then is freezed with liquid nitrogen spraying, then at room
Naturally to thaw 12h under the conditions of temperature, such freeze-thaw circulation 5 times, then will last time thaw after film carrier glass plate move into it is true
In vacuum freecing-dry case, 8h is dried, the glass plate of prefabricated membrane must be loaded with；The glass plate for being loaded with prefabricated membrane is placed in chitosan weight
In 30 times of butyl titanate, under the conditions of temperature is 80 DEG C, constant temperature dipping 2h, the glass plate for being loaded with prefabricated membrane must be impregnated, will
The glass plate that dipping is loaded with prefabricated membrane is moved into baking oven, after drying 8h under the conditions of being 90 DEG C in temperature, is taken off film, is produced perfume industry
Special infiltrating and vaporizing membrane.Described to be loaded with the nitrogen of butyl titanate, butyl titanate volume content is 6%.
Example 4
Dopamine solution in mass ratio 1 by eggshell powder with mass concentration for 2g/L：100 add in No. 1 beakers, then by beaker
Move into digital display to test the speed constant temperature blender with magnetic force, be 38 DEG C in temperature, under the conditions of rotating speed is 500r/min, be stirred immersion 3h,
Soak is obtained, then soak is filtered, produces modified eggshell powder；Dopamine by nano-cellulose with mass concentration for 2g/L
Solution in mass ratio 1：100 add in single-necked flask, are 38 DEG C in temperature, under the conditions of rotating speed is 500r/min, are stirred leaching
3h is steeped, obtains immersion mixed liquor, then immersion mixed liquor is filtered, filter residue is obtained, then filter residue is placed in fluidized-bed reactor, then with
200mL/min speed is passed through the nitrogen reaction 40min for being loaded with butyl titanate into reactor, produces modified nano fiber
Element；It is 1 in mass ratio：100 add chitosan and water in No. 2 beakers, after being stirred 20min with glass bar, in room temperature bar
Swelling 8h is stood under part, No. 2 beakers then are moved into digital displays tests the speed constant temperature blender with magnetic force, is 100 DEG C in temperature, rotating speed is
Under the conditions of 500r/min, constant temperature stirring and dissolving 4h, after naturally cool to room temperature, mixed liquor is obtained；Count in parts by weight, by 120 parts
Mixed liquor, 5 parts of mass fractions are 20% part of zinc sulfate, 10 parts of modified eggshell powder, 10 parts of modified nanometer celluloses, 10 parts of carbonic acid
Hydrogen calcium, add in batch mixer, under the conditions of temperature is 55 DEG C, after constant temperature is stirred 4h, vacuum degasing machine is transferred to, in vacuum
Under the conditions of 130Pa, vacuum defoamation 50min, discharging, film liquid is obtained into；Glass plate is taken, after being wiped 5 times with absolute ethyl alcohol, then is spent
Ion water washing 5 times, cleaned glass plate is obtained, then film forming liquid stream is prolonged in cleaned glass plate surface, and with scraper knifing, obtain film carrier
Glass plate, then with liquid nitrogen spraying freezing film carrier glass plate 30s, the naturally to thaw 12h under room temperature condition, such freeze-thaw
Circulation 5 times, then the film carrier glass plate after last time defrosting is moved into vacuum freezing drying oven, 8h is dried, must be loaded with prefabricated
The glass plate of film；The glass plate for being loaded with prefabricated membrane is moved into baking oven, after drying 8h under the conditions of being 90 DEG C in temperature, takes off film, i.e.,
Obtain the special infiltrating and vaporizing membrane of perfume industry.Described to be loaded with the nitrogen of butyl titanate, butyl titanate volume content is 6%.
Comparative example：The infiltrating and vaporizing membrane of Henan Chemical Industry Science Co., Ltd production.
The gained of example 1 to 4 infiltrating and vaporizing membrane and comparative example product are subjected to performance detection, specific detection method is as follows：
Using the tensile strength and elongation at break of imported electronic fabric strength tester detection infiltrating and vaporizing membrane, adjustment rate of extension is
500mm/min, specific testing result are as shown in table 1：
Table 1
From the testing result of table 1, the special infiltrating and vaporizing membrane tensile strength of present invention gained perfume industry and elongation at break obtain
To effectively improving, there is excellent mechanical performance.
Claims (6)
1. a kind of preparation method of the special infiltrating and vaporizing membrane of perfume industry, it is characterised in that specifically preparation process is：
（1）It is 1 in mass ratio：50~1：100 are stirred chitosan and water, stand swelling 6~8h after, in temperature be 95~
Under the conditions of 100 DEG C, stirring and dissolving, mixed liquor is obtained；
（2）Count in parts by weight, by 100~120 portions of mixed liquors, 3~5 parts of solution of zinc sulfate, 8~10 parts of modified eggshell powder, 8
~10 parts of nano-celluloses, 8~10 parts of calcium bicarbonates, are stirred, vacuum defoamation, obtain into film liquid；
（3）Film forming liquid stream is prolonged on glass plate, and handled 3~5 times with scraper knifing, subsequent freeze-thaw circulation, then through true
Vacuum freecing-dry, the glass plate of prefabricated membrane must be loaded with；
（4）The glass plate for being loaded with prefabricated membrane is placed in the butyl titanate of 20~30 times of chitosan weight, constant temperature dipping, then passed through
Dry, take off film, produce infiltrating and vaporizing membrane.
A kind of 2. preparation method of the special infiltrating and vaporizing membrane of perfume industry according to claim 1, it is characterised in that：Step
（2）The modified eggshell powder is by eggshell powder and dopamine solution in mass ratio 1：50~1：100 mixing immersions obtain.
A kind of 3. preparation method of the special infiltrating and vaporizing membrane of perfume industry according to claim 1, it is characterised in that：Step
（2）The nano-cellulose can also be modified nanometer cellulose, and specific method of modifying is as follows：By nano-cellulose and dopamine
Solution in mass ratio 1：50~1：100 mixing immersions, filtering, are fumigated through the nitrogen containing butyl titanate, produce modified Nano fibre
Dimension element.
A kind of 4. preparation method of the special infiltrating and vaporizing membrane of perfume industry according to claim 1, it is characterised in that：Step
（2）Described vacuum defoamation condition is：Vacuum is 120~130Pa, and inclined heated plate is 40~50min.
A kind of 5. preparation method of the special infiltrating and vaporizing membrane of perfume industry according to claim 1, it is characterised in that：Step
（3）Described freeze-thaw circulation concretely comprises the following steps：After 20~30s being freezed with liquid nitrogen spraying, under room temperature condition, naturally to thaw
10~12h.
A kind of 6. preparation method of the special infiltrating and vaporizing membrane of perfume industry according to claim 1, it is characterised in that：Step
（4）The constant temperature is 60~80 DEG C.
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Cited By (2)
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| CN109518302A (en) * | 2018-11-26 | 2019-03-26 | 合肥卓汇新材料科技有限公司 | A kind of automatically cleaning wig fiber |
| CN114950153A (en) * | 2022-03-01 | 2022-08-30 | 泰州九润环保科技有限公司 | High-flux PEG/PVDF composite desulfurization membrane and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518302A (en) * | 2018-11-26 | 2019-03-26 | 合肥卓汇新材料科技有限公司 | A kind of automatically cleaning wig fiber |
| CN114950153A (en) * | 2022-03-01 | 2022-08-30 | 泰州九润环保科技有限公司 | High-flux PEG/PVDF composite desulfurization membrane and preparation method thereof |
| CN114950153B (en) * | 2022-03-01 | 2023-10-31 | 泰州九润环保科技有限公司 | High-flux PEG/PVDF composite desulfurization membrane and preparation method thereof |
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