CN107904939A - A kind of preparation method of strong base ion exchange fiber - Google Patents
A kind of preparation method of strong base ion exchange fiber Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of strong base ion exchange fiber.Matrix fiber is added in reaction vessel first, solvent orange 2 A is subsequently added into and is fully swollen, Cyanuric Chloride is added after swelling and catalyst stirs evenly and heats reaction；After reaction, it is cooled to room temperature, filters, filter out products therefrom, products therefrom is soaked, extracted, washed and dried successively, obtains the fiber of Cyanuric Chloride modification；The fiber that gained Cyanuric Chloride is modified is added in solvent B and is fully swollen, functionalized reagent is sequentially added after swelling and acid binding agent is stirred evenly and heated, after reaction, it is cooled to room temperature, filters, filter out products therefrom, products therefrom is soaked, is extracted, washed and dried successively, finally obtains product strong base ion exchange fiber.Strong base ion exchange fiber is prepared using the present invention, effectively prevent during chloromethylation in the prior art using the use defect of the strong carcinogens such as chloromethyl ether.
Description
First, technical field：
The present invention relates to a kind of preparation method of ion-exchange fibre, is exchanged more particularly to a kind of new strong base ion fine
The preparation method of dimension.
2nd, background technology：
Ion-exchange fibre has that adsorption rate is fast, purifying rate is high, homeo-osmosis, can be compiled into various fabrics form etc.
Advantage, has in multiple fields such as cleaning harmful gas, heavy metal containing wastewater treatment, ultra-pure water preparation, sea water desalinations and widely should
Use prospect；Especially strong base ion exchange fiber, has strong ion-exchange capacity and is widely applied scope, is subject to more
Concern.So far, mainly there is method used by preparing strong base ion exchange fiber：Triggered by irradiating by styrene and two
The copolymer grafted of Ethenylbenzene is on polypropylene fibre, then again carrying out it chloromethylation and quaternary ammoniated；It is multiple with " island " type
Condensating fiber is matrix, by carrying out chloromethylation to it and quaternary ammoniated being prepared into strong base ion exchange fiber；Benzene is carried with main chain
The polyphenylene sulfide fibre of ring is matrix, by chloromethylation and quaternized strong base ion exchange fiber is prepared.
At present, the existing preparation method for preparing strong base ion exchange fiber is required for this step of chloromethylation, chlorine used
Methylating reagent is mainly chloromethyl ether, and chloromethyl ether is a kind of strong carcinogen, has been command by forbidding using in the world.Cause
This, study it is new can substitute strong carcinogen chloromethyl ether prepare the strong base ion exchange fiber with suitable exchange capacity with
Very important meaning.
In recent years, some document reports prepared on strong base ion exchange fiber and patent disclose, such as 1,
Application No. 201010555361.4, entitled " preparation methods of polyphenylene sulfide-based strong basic ion exchange fibers ".The hair
Bright patent is using polyphenylene sulfide fibre as matrix, and by chloromethylation and quaternary ammoniated, the ion exchange for having obtained a kind of quaternary amine type is fine
Tie up material.2nd, entitled " the preparation side of PPS base N- methylimidazole strong base ion exchange fibers of Patent No. 201310240562.9
The patent of method " is obtained a kind of new strong using polyphenylene sulfide fibre as skeleton by chloromethylation and N- methylimidazole functionalization
Basic ion exchange fiber.What is used during both existing preparation method chloromethylations is strong carcinogen chloromethane
Ether.
3rd, the content of the invention：
The technical problem to be solved in the present invention is：In order to overcome existing prepare in highly basic exchange ion fiber process using strong
Carcinogen chloromethyl ether carries out the technical barrier of chloromethylation, and a kind of new preparation of present invention offer is had and the prior art
The method of the strong base ion exchange fiber of suitable exchange capacity, the i.e. present invention provide a kind of system of new strong base ion exchange fiber
Preparation Method.Technical solution of the present invention replaces the carcinogens such as chloromethyl ether in base using cheap, non-carcinogenesis Cyanuric Chloride
On body fiber introduce containing active chlorine functional group, then by with the reagent reacting containing strong base functionalities, so as to be prepared into
To new strong base ion exchange fiber.Present invention effectively prevents use chloromethyl ether etc. strong during chloromethylation in the prior art
The use defect of carcinogen.
To solve the above-mentioned problems, the technical solution taken of the present invention is：
The present invention provides a kind of preparation method of strong base ion exchange fiber, and the preparation method comprises the following steps：
A, matrix fiber is added in reaction vessel first, is subsequently added into solvent orange 2 A and is fully swollen, three are added after swelling
Polychlorostyrene cyanogen and catalyst stirring or ultrasonic disperse are uniform, are then heated to 60~120 DEG C, react 6 under this temperature conditions
~48h；After reaction, it is cooled to room temperature, filters, filter out products therefrom, products therefrom is soaked successively, is extracted, water
Wash and dry, obtain the fiber of Cyanuric Chloride modification；
The mass volume ratio (g/ml) of addition is 1 between described matrix fiber and solvent orange 2 A：10~100, described matrix is fine
Mass ratio between dimension and Cyanuric Chloride is 1：0.5~3, the molar ratio between the Cyanuric Chloride and catalyst is 1：0.5~
1；
B, the fiber of Cyanuric Chloride modification obtained by step a is added in solvent B and is fully swollen, sequentially added after swelling
Functionalized reagent and acid binding agent are stirred or ultrasonic disperse is uniform, are then heated to 30~70 DEG C, in this temperature strip
1~12h is reacted under part；After reaction, it is cooled to room temperature, filters, filter out products therefrom, products therefrom is soaked successively
Bubble, extracting, washing and drying, finally obtain product strong base ion exchange fiber；
The mass volume ratio (g/ml) of addition is 1 between the fiber and solvent B of the Cyanuric Chloride modification：10~100,
Molar ratio on the fiber of the Cyanuric Chloride modification between Active Chlorine and functionalized reagent is 1：1~10, the Cyanuric Chloride
Molar ratio on the fiber of modification between Active Chlorine and acid binding agent is 1：1~2.
According to the preparation method of above-mentioned strong base ion exchange fiber, matrix fiber described in step a is fine for polyphenylene sulfide
Dimension is PPS fibers or polypropylene grafted styrene-divinylbenzene fiber, that is, PP-St-DVB fibers；The PP-St-DVB fibers
Grafting rate be 100~250%, divinyl benzene content be 2~5%；The solvent orange 2 A is dichloroethanes, chloroform, tetrachloro
Change carbon or nitrobenzene；The catalyst is aluminum trichloride (anhydrous), anhydrous ferric trichloride, anhydrous zinc chloride or anhydrous stannic chloride.
According to the preparation method of above-mentioned strong base ion exchange fiber, the time being fully swollen in step a is 6~48h.
According to the preparation method of above-mentioned strong base ion exchange fiber, products therefrom is soaked successively described in step a
Bubble, extracting, washing and dry specific operation process are：Products therefrom is used successively concentration soaked for the HCl of 2mol/L
10h, ethanolic extraction 8h, be washed to neutrality, and constant weight is dried under vacuum to after washing.
According to the preparation method of above-mentioned strong base ion exchange fiber, during the vacuum drying vacuum be 0.08Mpa, it is dry
Dry temperature is 60 DEG C, drying time 24h.
According to the preparation method of above-mentioned strong base ion exchange fiber, solvent B described in step b is water, acetone and tetrahydrochysene
At least one of furans；The time being fully swollen is 6~48h.
According to the preparation method of above-mentioned strong base ion exchange fiber, functionalized reagent described in step b is front three aqueous amine
Solution, triethylamine, N- methylimidazoles or cyanoguanidines；The acid binding agent is sodium carbonate, sodium acid carbonate, sodium hydroxide or N, N- bis- are different
Propyl group ethylenediamine.
According to the preparation method of above-mentioned strong base ion exchange fiber, the mass percentage concentration of the trimethylamine aqueous solution is
25%.
According to the preparation method of above-mentioned strong base ion exchange fiber, immersion, the tool for extracting, washing and drying in step b
Body operating process is：Products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to
Property, it is dried under vacuum to constant weight after washing.
According to the preparation method of above-mentioned strong base ion exchange fiber, during the vacuum drying vacuum be 0.08Mpa, it is dry
Dry temperature is 60 DEG C, drying time 24h.
The positive beneficial effect of the present invention：
1st, the Friedel-Crafts of technical solution of the present invention first passage Cyanuric Chloride and phenyl ring react, by the benzene of fibrous matrix
Introduce the Active Chlorine functional group for being capable of further functionalization on ring, so with the reagent generation nucleophilic displacement of fluorine with strong base functionalities
Reaction, introduces strong base functionalities, so as to obtain new strong base ion exchange fiber.
2nd, technical solution of the present invention has been effectively shielded from the use of strong carcinogen chloromethyl ether in existing process, fine in matrix
Two Active Chlorines can be provided by often introducing a Cyanuric Chloride on dimension phenyl ring.Therefore, it is prepared into by technical solution of the present invention
The strong base ion exchange fiber arrived compared with prior art, has the exchange capacity of higher；By test chemical, prepared by the present invention
The exchange capacity highest of products obtained therefrom strong base ion exchange fiber can reach 4.93mmol/g, the friendship of fiber obtained by existing process
Capacity is changed generally in 3.0mmol/g or so.
3rd, the strong base ion exchange fiber that technical solution of the present invention is prepared not only has strong base functionalities, can be with the moon
Ion exchange occurs for ion, while also has the triazine ring of Cyanuric Chloride, coordination can occur with metal cation, so that
Liquidity limit.And with anion ion exchange can only occur for existing strong base ion exchange fiber.In addition, the technology of the present invention side
The strong base ion exchange fiber that case is prepared is by the mutually coordinated effect of strong base functionalities and triazine ring, so as to embody one
Some metal ions and anion are had excellent absorption property by a little distinctive absorption properties.
4th, the preparation method that uses of the present invention is mature and stable, reaction process is simple and convenient to operate, the time is short, energy consumption is low, easy
It is small in handling, polluting.Also, the present invention can obtain a series of having the function of the ion of highly basic by the change of functionalized reagent
Exchange fiber, a brand-new thinking is provided for the preparation of strong base ion exchange fiber, is the industry of strong base ion exchange fiber
Using providing strong basis.
5th, technical solution of the present invention replaces the carcinogens such as chloromethyl ether to exist using cheap, non-carcinogenesis Cyanuric Chloride
On matrix fiber introduce containing active chlorine functional group, then by with the reagent reacting containing strong base functionalities, so as to prepare
Obtain new strong base ion exchange fiber.Present invention effectively prevents chloromethyl ether etc. is used during chloromethylation in the prior art
The use defect of strong carcinogen.
4th, illustrate：
Fig. 1：(a) protocorm fiber, the fiber and products obtained therefrom (c) strong base ion exchange fiber of the modification of (b) Cyanuric Chloride
Scanning electron microscopic picture.
As can be seen from Figure 1：Protocorm fiber surface is smooth, and the fiber surface after Cyanuric Chloride modification starts to become thick
Rough, the strong base ion exchange fiber surface roughness that further functionalization obtains further increases, and starts to occur a small amount of broken
Piece and groove, it was demonstrated that reaction is smoothed out.
The EDS curves of strong base ion exchange fiber prepared by Fig. 2 embodiment of the present invention 5.
Analyzed by the EDS of Fig. 2, contain tetra- kinds of elements of C, N, S and Cl in sample, illustrate that Cyanuric Chloride is successfully grafted on fibre
Dimension table face.
Fig. 3 utilizes absorption property of the strong base ion exchange fiber to Cr VI prepared by the embodiment of the present invention 2.
From the figure 3, it may be seen that highest adsorbance is up to 224mg/g, higher than the adsorbance of existing strong base ion handing-over fiber.
Fig. 4 using strong base ion exchange fiber adsorbing hexavalent chromium prepared by the embodiment of the present invention 2 performance of living again.
From use：Fiber is reused 5 times, and absorption property is almost without loss, and regeneration rate is close to 100%, explanation
Fiber of the present invention has good absorption property to Cr VI.
5th, embodiment：
The present invention is further explained with reference to embodiments, but is not intended to limit present disclosure.
Embodiment 1：
The preparation method of strong base ion exchange fiber of the present invention, the detailed step of the preparation method are as follows：
A, 1.84g polyphenylene sulfide fibres i.e. PPS fibers are weighed first to add in reaction bulb, are subsequently added into bis- chloroethenes of 18.4ml
Alkane stands swelling 48h, and 0.92g (5mmol) Cyanuric Chlorides are added after swelling and the stirring of 1.305g (5mmol) anhydrous stannic chloride is equal
It is even, 60 DEG C are then heated to, reacts 48h under this temperature conditions；After reaction, it is cooled to room temperature, filters, filters out institute
Product is obtained, products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to neutrality, vacuum
Drying obtains Cyanuric Chloride after dry and repaiies to constant weight (vacuum 0.08Mpa, drying temperature are 60 DEG C, drying time 24h)
Decorations polyphenylene sulfide fibre (relative to former polyphenylene sulfide fibre, fiber weightening 23% after modification；It is computed, is grafted Cyanuric Chloride
Amount be 1.26mmol/g, active chlorine content 2.52mmol/g)；
B, the polyphenylene sulfide fibre of Cyanuric Chloride modification obtained by 1g steps a is weighed, 10ml acetone is added and stands swelling 48h,
5.947g, 25% trimethylamine aqueous solution (trimethylamine content 25.2mmol) and 0.134g sodium carbonate are sequentially added after swelling
(1.26mmol) is stirred uniformly, is then heated to 70 DEG C, reacts 1h under this temperature conditions；After reaction, it is cold
But to room temperature, filtering, products therefrom is filtered out, products therefrom is used successively concentration soak 10h, ethanol pumping for the HCl of 2mol/L
Carry 8h, be washed to neutrality, constant weight (vacuum 0.08Mpa, 60 DEG C of drying temperature, drying time 24h) is dried under vacuum to, after dry
Obtaining quaternary ammonium type polyphenylene sulfide-based strong basic ion exchange fibers, (before reaction, quaternized rear fiber weightening 13%, calculates fine
The exchange capacity of dimension is 1.95mmol/g).
Embodiment 2：
The preparation method of strong base ion exchange fiber of the present invention, the detailed step of the preparation method are as follows：
A, 4.6g PP-St-DVB fibers are weighed first to add in reaction bulb, are subsequently added into 200ml nitrobenzenes and are stood swelling
12h, adds 11.5g (62.5mmol) Cyanuric Chlorides after swelling and 10.14g (62.5mmol) anhydrous ferric trichloride ultrasonic dissolution is equal
It is even, 120 DEG C are then heated to, reacts 6h under this temperature conditions；After reaction, it is cooled to room temperature, filters, filters out institute
Product is obtained, products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to neutrality, vacuum
Drying obtains Cyanuric Chloride after dry and repaiies to constant weight (vacuum 0.08Mpa, drying temperature are 60 DEG C, drying time 24h)
Decorations PP-St-DVB fibers (relative to former PP-St-DVB fibers, fiber weightening 61% after modification；It is computed, is grafted three polychlorostyrene
The amount of cyanogen is 2.56mmol/g, active chlorine content 5.12mmol/g)；
B, the fiber of Cyanuric Chloride modification obtained by 1g steps a is weighed, 50ml deionized waters is added and stands swelling 24h, swelling
After sequentially add 11.894g, 25% trimethylamine aqueous solution (trimethylamine content 50.4mmol) and 0.272g sodium carbonate
(2.56mmol) is stirred uniformly, is then heated to 70 DEG C, reacts 10h under this temperature conditions；After reaction, it is cold
But to room temperature, filtering, products therefrom is filtered out, products therefrom is used successively concentration soak 10h, ethanol pumping for the HCl of 2mol/L
Carry 8h, be washed to neutrality, constant weight (vacuum 0.08Mpa, 60 DEG C of drying temperature, drying time 24h) is dried under vacuum to, after dry
Obtaining the PP-St-DVB strong base ions exchange fiber with front three amine functions base, (before reaction, quaternized rear fiber increases weight
41%, the exchange capacity of fiber is 4.93mmol/g).
Using the PP-St-DVB strong base ion exchange fibers with front three amine functions base prepared by the present embodiment to sexavalence
Chromium carries out adsorption test, experiment proves that, the PP-St-DVB highly basic with front three amine functions base prepared by the present embodiment 2 from
Sub- exchange fiber has very excellent absorption property to Cr VI, refers to shown in Fig. 3 and Fig. 4, highest adsorbance can reach
224mg/g, higher than existing strong base ion exchange fiber, while has and recycles performance well.
Embodiment 3：
The preparation method of strong base ion exchange fiber of the present invention, the detailed step of the preparation method are as follows：
A, 0.92g PP-St-DVB fibers are weighed first to add in reaction bulb, and it is molten to be subsequently added into 20ml chloroforms standing
Swollen 6h, adds 2.76g (15mmol) Cyanuric Chlorides after swelling and 0.1g (7.5mmol) aluminum trichloride (anhydrous) ultrasonic dissolution is uniform,
Then 60 DEG C are heated to, reacts 24h under this temperature conditions；After reaction, it is cooled to room temperature, filters, filters out gained
Product, products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to neutrality, vacuum is done
It is dry to constant weight (vacuum 0.08Mpa, drying temperature are 60 DEG C, drying time 24h), Cyanuric Chloride modification is obtained after dry
PP-St-DVB fibers (relative to former PP-St-DVB fibers, fiber weightening 39% after modification；It is computed, is grafted Cyanuric Chloride
Amount be 1.90mmol/g, active chlorine content 3.8mmol/g)；
B, weigh the fiber of Cyanuric Chloride modification obtained by 1g steps a, add 10ml acetone and stand swelling 48h, after swelling according to
Secondary addition 0.377g N- methylimidazoles (3.8mmol) and 0.319g sodium acid carbonates (3.8mmol) are stirred uniformly, Ran Houjia
Heat is warming up to 30 DEG C, reacts 12h under this temperature conditions；After reaction, it is cooled to room temperature, filters, filters out products therefrom, will
Products therefrom uses concentration to soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to neutrality successively, is dried under vacuum to constant weight
(vacuum 0.08Mpa, 60 DEG C of drying temperature, drying time 24h), obtains after dry with 1-methyl-2-pyrrolidinone function base
PP-St-DVB strong base ions exchange fiber (before reaction, it is quaternized after fiber weightening 32%, the exchange capacity of fiber is
2.45mmol/g)。
Embodiment 4：
The preparation method of strong base ion exchange fiber of the present invention, the detailed step of the preparation method are as follows：
A, 4.6g PP-St-DVB fibers are weighed first to add in reaction bulb, are subsequently added into 200ml nitrobenzenes and are stood swelling
12h, adds 11.5g (62.5mmol) Cyanuric Chlorides after swelling and 10.14g (62.5mmol) anhydrous ferric trichloride ultrasonic dissolution is equal
It is even, 120 DEG C are then heated to, reacts 6h under this temperature conditions；After reaction, it is cooled to room temperature, filters, filters out institute
Product is obtained, products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to neutrality, vacuum
Drying obtains Cyanuric Chloride after dry and repaiies to constant weight (vacuum 0.08Mpa, drying temperature are 60 DEG C, drying time 24h)
Decorations PP-St-DVB fibers (relative to former PP-St-DVB fibers, fiber weightening 61% after modification；It is computed, is grafted three polychlorostyrene
The amount of cyanogen is 2.56mmol/g, active chlorine content 5.12mmol/g)；
B, the fiber of Cyanuric Chloride modification obtained by 1g steps a is weighed, 50ml deionized waters is added and stands swelling 24h, swelling
After sequentially add 3.97g cyanoguanidines (46.08mmol) and 0.205g sodium hydroxides (5.12mmol) stir evenly, then heating rises
Temperature reacts 8h to 60 DEG C under this temperature conditions；After reaction, it is cooled to room temperature, filters, filter out products therefrom, by gained
Product uses concentration to soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to neutrality successively, and it is (true to be dried under vacuum to constant weight
Reciprocal of duty cycle 0.08Mpa, 60 DEG C of drying temperature, drying time 24h), it is strong that the PP-St-DVB with cyanoguanidines function base is obtained after dry
Basic ion exchange fiber (before reaction, quaternized rear fiber weightening 41%, the exchange capacity of fiber is 3.46mmol/g).
Embodiment 5：
The preparation method of strong base ion exchange fiber of the present invention, the detailed step of the preparation method are as follows：
A, 4.14g polyphenylene sulfide fibres i.e. PPS fibers are weighed first to add in reaction bulb, are subsequently added into tetra- chlorinations of 180ml
Carbon stands swelling 15h, and 9.2g (50mmol) Cyanuric Chlorides and 5.96g (43.75mmol) anhydrous zinc chloride, ultrasound are added after swelling
It is uniformly dissolved, is then heated to 70 DEG C, reacts 25h under this temperature conditions；After reaction, it is cooled to room temperature, filters,
Products therefrom is filtered out, products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to
Property, constant weight (vacuum 0.08Mpa, drying temperature are 60 DEG C, drying time 24h) is dried under vacuum to, three are obtained after dry
The modification of polychlorostyrene cyanogen polyphenylene sulfide fibre (relative to former polyphenylene sulfide fibre, fiber weightening 52% after modification；It is computed, is grafted
The amount of Cyanuric Chloride is 2.31mmol/g, active chlorine content 4.62mmol/g)；
B, the polyphenylene sulfide fibre of Cyanuric Chloride modification obtained by 1g steps a is weighed, 40ml deionized waters is added and stands swelling
28h, sequentially added after swelling 4.04g triethylamines (40mmol) and 0.665g N, N- diisopropyl ethylenediamines (4.62mmol) into
Row stirs evenly, and is then heated to 65 DEG C, reacts 10h under this temperature conditions；After reaction, it is cooled to room temperature, mistake
Filter, filters out products therefrom, products therefrom is used successively concentration soak 10h, ethanolic extraction 8h for the HCl of 2mol/L, be washed to
Neutrality, is dried under vacuum to constant weight (vacuum 0.08Mpa, 60 DEG C of drying temperature, drying time 24h), obtains carrying three after dry
Ethamine function base PPS strong base ions exchange fiber (before reaction, it is quaternized after fiber weightening 32%, the exchange of fiber
Capacity is 2.40mmol/g).
Claims (10)
1. a kind of preparation method of strong base ion exchange fiber, it is characterised in that the preparation method comprises the following steps：
A, matrix fiber is added in reaction vessel first, is subsequently added into solvent orange 2 A and is fully swollen, three polychlorostyrene are added after swelling
Cyanogen and catalyst stirring or ultrasonic disperse it is uniform, be then heated to 60~120 DEG C, under this temperature conditions react 6~
48h；After reaction, it is cooled to room temperature, filters, filter out products therefrom, products therefrom is soaked successively, extracts, wash
And drying, obtain the fiber of Cyanuric Chloride modification；
The mass volume ratio of addition is 1 between described matrix fiber and solvent orange 2 A：10~100, described matrix fiber and three polychlorostyrene
Mass ratio between cyanogen is 1：0.5~3, the molar ratio between the Cyanuric Chloride and catalyst is 1：0.5~1；
B, the fiber of Cyanuric Chloride modification obtained by step a is added in solvent B and is fully swollen, function is sequentially added after swelling
Change reagent and acid binding agent is stirred or ultrasonic disperse is uniform, 30~70 DEG C are then heated to, under this temperature conditions
React 1~12h；After reaction, it is cooled to room temperature, filters, filter out products therefrom, products therefrom is soaked successively, is taken out
Carry, wash and dry, finally obtain product strong base ion exchange fiber；
The mass volume ratio of addition is 1 between the fiber and solvent B of the Cyanuric Chloride modification：10~100, three polychlorostyrene
Molar ratio on the fiber of cyanogen modification between Active Chlorine and functionalized reagent is 1：1~10, the fiber of the Cyanuric Chloride modification
Molar ratio between upper Active Chlorine and acid binding agent is 1：1~2.
2. the preparation method of strong base ion exchange fiber according to claim 1, it is characterised in that：Base described in step a
Body fiber is fine for polyphenylene sulfide fibre, that is, PPS fibers or polypropylene grafted styrene-divinylbenzene fiber, that is, PP-St-DVB
Dimension；The grafting rate of the PP-St-DVB fibers is 100~250%, and divinyl benzene content is 2~5%；The solvent orange 2 A is two
Chloroethanes, chloroform, carbon tetrachloride or nitrobenzene；The catalyst is aluminum trichloride (anhydrous), anhydrous ferric trichloride, anhydrous chlorine
Change zinc or anhydrous stannic chloride.
3. the preparation method of strong base ion exchange fiber according to claim 1, it is characterised in that：It is fully molten in step a
The swollen time is 6~48h.
4. the preparation method of strong base ion exchange fiber according to claim 1, it is characterised in that：Will described in step a
The specific operation process that products therefrom is soaked, extracted, washed and dried successively is：Products therefrom is used successively concentration for
HCl immersions 10h, the ethanolic extraction 8h of 2mol/L, be washed to neutrality, and constant weight is dried under vacuum to after washing.
5. the preparation method of strong base ion exchange fiber according to claim 4, it is characterised in that：During the vacuum drying
Vacuum is 0.08Mpa, drying temperature is 60 DEG C, drying time 24h.
6. the preparation method of strong base ion exchange fiber according to claim 1, it is characterised in that：It is molten described in step b
Agent B is at least one of water, acetone and tetrahydrofuran；The time being fully swollen is 6~48h.
7. the preparation method of strong base ion exchange fiber according to claim 1, it is characterised in that：Work(described in step b
It is trimethylamine aqueous solution, triethylamine, N- methylimidazoles or cyanoguanidines that reagent, which can be changed,；The acid binding agent for sodium carbonate, sodium acid carbonate,
Sodium hydroxide or N, N- diisopropyl ethylenediamine.
8. the preparation method of strong base ion exchange fiber according to claim 7, it is characterised in that：The trimethylamine is water-soluble
The mass percentage concentration of liquid is 25%.
9. the preparation method of strong base ion exchange fiber according to claim 1, it is characterised in that soak, take out in step b
The specific operation process for carrying, washing and drying is：Products therefrom is used successively concentration soak 10h, ethanol for the HCl of 2mol/L
Extracting 8h, be washed to neutrality, and constant weight is dried under vacuum to after washing.
10. the preparation method of strong base ion exchange fiber according to claim 9, it is characterised in that：The vacuum drying
When vacuum be 0.08Mpa, drying temperature is 60 DEG C, drying time 24h.
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| CN113502558A (en) * | 2021-05-28 | 2021-10-15 | 中国石油化工股份有限公司 | Auxiliary device for preparing polyphenylene sulfide filament and preparation method |
| CN117672582A (en) * | 2023-08-16 | 2024-03-08 | 西南科技大学 | Nuclear medicine radioactive wastewater deep purification treatment system and application method |
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