CN105859981A - Method for preparing amphoteric ion exchange resin by utilizing thermosetting resin - Google Patents
Method for preparing amphoteric ion exchange resin by utilizing thermosetting resin Download PDFInfo
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- CN105859981A CN105859981A CN201610319447.4A CN201610319447A CN105859981A CN 105859981 A CN105859981 A CN 105859981A CN 201610319447 A CN201610319447 A CN 201610319447A CN 105859981 A CN105859981 A CN 105859981A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/10—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers containing more than one epoxy radical per molecule
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J43/00—Amphoteric ion-exchange, i.e. using ion-exchangers having cationic and anionic groups; Use of material as amphoteric ion-exchangers; Treatment of material for improving their amphoteric ion-exchange properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1477—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1494—Polycondensates modified by chemical after-treatment followed by a further chemical treatment thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
Abstract
The invention discloses a method for preparing amphoteric ion exchange resin by utilizing thermosetting resin. The method comprises the following steps: adding polymer raw materials into paraformaldehyde, performing chloromethylation reaction by using a catalyst, then adding trimethylamine for amination, finally adding acrylic acid and ammonium persulfate for reaction to obtain the amphoteric ion exchange resin. According to the method disclosed by the invention, waste thermosetting phenolic resin and epoxy resin as well as laboratory made phenolic resin and epoxy resin are utilized to prepare the amphoteric ion exchange resin; raw materials used in the method are low in cost and easy to obtain, the exchange performances of products can meet the performance requirements of the commercially-available amphoteric ion exchange resin, the environmental protection is facilitated, and moreover, the sustainable development of society can also be promoted. The method for preparing the amphoteric ion exchange resin by utilizing thermosetting phenolic resin and the epoxy resin, disclosed by the invention, is simple and easy o control, reduces the recycling cost of the waste thermosetting resin, realizes the resource utilization of wastes and has an important significance in controlling the environmental pollution.
Description
Technical field
The present invention relates to the preparation method of a kind of ion exchange resin, and relate to a kind of waste thermosetting resin recoverying and utilizing method, particularly relate to the preparation method of a kind of amphoteric ion-exchange resin, be applied to polymeric scrap material recycling technical field.
Background technology
Thermosetting epoxy resin and phenolic resin are macromolecule three-dimensional polymers, they common features be molecular structure be crosslinking tridimensional network.The tridimensional network of crosslinking has preferable mechanical property and a heat resistance, but it is molten, insoluble characteristic makes its recycling after discarded have the highest difficulty.If to its reasonable recycling, not only contributing to environmental protection, and the sustainable development of society can also be advanced, but the processing method after reclaiming at present is the most preferable.
Summary of the invention
In order to solve prior art problem; it is an object of the invention to the deficiency overcoming prior art to exist; a kind of method utilizing thermosetting resin to prepare amphoteric ion-exchange resin is provided; homemade to waste and old thermosetting phenolic resin, epoxy resin and laboratory phenolic resin and epoxy resin can be prepared as amphoteric ion-exchange resin; raw material used by the inventive method is cheap and easy to get; the switching performance of product disclosure satisfy that the performance requirement of commercially available amphoteric ion-exchange resin; be conducive to environmental protection, and the sustainable development of society can also be advanced.
Creating purpose for reaching foregoing invention, the present invention uses following technical proposals:
A kind of method utilizing thermosetting resin to prepare amphoteric ion-exchange resin, comprises the steps:
A. using the mixture of any one high molecular polymer in epoxy resin and phenolic resin or the most several high molecular polymers as reactant feed, according to the hybrid reaction material portion rate example carrying out chemical reaction, basic for reference with the number of reactant feed, take 10 parts of reactant feed, the concentrated hydrochloric acid that concentration is 38wt.% of 0-20 part catalyst and 30-200ml is mixed and stirred for, form pretreatment reaction system, reaction system is made to carry out reacting 4-9h under the reaction temperature of 50-100 DEG C, after reaction system to be pre-treated is cooled to room temperature, reaction terminates, then carry out filtering by the product generated in pretreatment reaction system and separate, thus collect and obtain first solid product；As currently preferred technical scheme, described catalyst preferably employs anhydrous zinc chloride, and preferably according to the mixed reactant material number ratio carrying out chemical reaction, take 10 parts of paraformaldehydes again as another kind of reaction mass, paraformaldehyde, anhydrous zinc chloride, reactant feed and concentrated hydrochloric acid is made to be mixed and stirred in the lump forming pretreatment reaction system, carry out chloromethyl reaction, prepare first solid product；Preferably employ old circuit board powder that dry granularity is 25 ~ 40 mesh as reactant feed；
B. in step a, the washing of gained first solid matter with deionized water to neutral, separation will be refiltered, and collect and obtain original solid material, then carry out drying to constant weight by original solid material；
C. the number of the reactant feed to use in step a is basic for reference, take 10 parts in stepb gained be dried original solid material, and measure the trimethylamine of 10-60 part, being mixed with trimethylamine by original solid material inserts in beaker, then in fume hood, place 3-24h after sealing beaker mouth, carry out aminating reaction, after question response terminates, obtain intermediate solid product；
D. the intermediate solid product of gained in step c is washed with deionized to neutrality, refilters separation, collect and obtain intermediate solid material, then carry out drying to constant weight by intermediate solid material；
E. the number of the reactant feed to use in step a is basic for reference, carry out the intermediate solid material of 10 parts of gained in step d, 0.1-1.5 part potassium peroxydisulfate, the acrylic acid of 1-15ml and 30-50ml deionized water being mixed and stirred for forming end reaction system, end reaction system is made to carry out reacting 8-15h under the reaction temperature of 70-80 DEG C, after end reaction system is cooled to room temperature, reaction terminates, then the product generated in end reaction system is filtered, thus collect and obtain final solid product；
F. the final solid matter with deionized water of gained in step e is washed to neutral, refilter separation, collect and obtain final solid material, then final solid material is dried, i.e. prepare amphoteric ion-exchange resin.
As the further preferred technical scheme of such scheme, in described step a, c and e, the number of each material is weight portion, and the number correspondence unit of weight of each material is the gravimetric value of g.In described step a, according to the hybrid reaction material portion rate example carrying out chemical reaction, basic for reference with the number of reactant feed, the concentrated hydrochloric acid preferably taking the reactant feed of 10 g, the paraformaldehyde of 10g, the anhydrous zinc chloride of 10-20g and 100-200ml is mixed and stirred for, and forms pretreatment reaction system.In described step c, the number of the reactant feed to use in step a is basic for reference, preferably takes the original solid material being dried of 10g gained in stepb, and measures the trimethylamine of 30-35g, being mixed with trimethylamine by original solid material inserts in beaker, carries out aminating reaction.In described step e, the number of the reactant feed to use in step a is basic for reference, preferably carry out 10g the intermediate solid material of gained, the potassium peroxydisulfate of 0.1-1.5g, the acrylic acid of 2-13ml and 30-50ml deionized water in step d being mixed and stirred for forming end reaction system, make end reaction system react.
The present invention compared with prior art, has and the most obviously highlights substantive distinguishing features and remarkable advantage:
1. polymer raw material is added paraformaldehyde by the present invention, catalyst carries out chloromethyl reaction, it is subsequently adding trimethylamine and carries out amination, it is eventually adding acrylic acid, ammonium persulfate carries out reaction and obtains amphoteric ion-exchange resin, homemade to waste and old thermosetting phenolic resin, epoxy resin and laboratory phenolic resin and epoxy resin can be prepared as amphoteric ion-exchange resin and be prepared as anion exchange resin by the present invention, raw material used is cheap and easy to get, and the switching performance of product disclosure satisfy that the performance requirement of commercially available amphoteric ion-exchange resin；
2. to utilize thermosetting phenolic resin, epoxy resin to prepare the method for amphoteric ion-exchange resin simple for the present invention, easily controllable, reducing the recycling cost of waste and old thermosetting resin, it is achieved that the resource of discarded object, the control of environmental pollution is significant.
Detailed description of the invention
Details are as follows for the preferred embodiments of the present invention:
Embodiment one:
In the present embodiment, a kind of method utilizing thermosetting resin to prepare amphoteric ion-exchange resin, comprise the steps:
nullA. water-bath is warming up to 80 DEG C，Using old circuit board powder as reactant feed，According to the hybrid reaction material portion rate example carrying out chemical reaction，Weigh old circuit board powder 10g、Paraformaldehyde 10g、Anhydrous zinc chloride 20g，And measure, with graduated cylinder, the concentrated hydrochloric acid that 200ml concentration is 38wt.%，The material weighed and concentrated hydrochloric acid are poured in 500ml there-necked flask in the lump，It is mixed to form pretreatment reaction system，The hollow plug of there-necked flask the most beyond the Great Wall，Then there-necked flask is placed in water-bath，Moderate-speed mixer pretreatment reaction system，At a temperature of the water-bath of 80 DEG C，Make reaction system carry out reacting 8h and generate first set reaction product，After question response terminates，Close water-bath，Take out there-necked flask，The reaction system generating first set reaction product is proceeded in 500ml beaker，There-necked flask is washed in triplicate by deionized water，Liquid after washing is poured in beaker，The reaction system sand core funnel containing first set reaction product in beaker is filtered，Obtain first set reaction product，And by deionized water by the most neutral for the washing of first set reaction product，Refilter separation，Collect and obtain aqueous first set reaction product，Then aqueous first set reaction product is placed in 60 DEG C of baking ovens 24h，Dry to constant weight，Obtain the first set reaction product being dried；
B. the first set reaction product 10g being dried obtained in step a it is taken at, and measure 30g trimethylamine, being mixed with trimethylamine by first set reaction product inserts in another beaker, then in fume hood, place 24h after sealing beaker mouth with preservative film, carry out aminating reaction, generate second time product, after question response terminates, the reaction system sand core funnel containing second time product in beaker is filtered, obtain second time product, and by deionized water by the most neutral for second time product washing, refilter separation, collect and obtain aqueous second time product, then aqueous second time product is placed in 60 DEG C of baking ovens 24h, dry to constant weight, obtain the second time product being dried；
The most again water-bath is warming up to 70 DEG C, weigh second time product 10g being dried, the potassium peroxydisulfate of 1g obtained in stepb, 13ml acrylic acid and 30ml deionized water is measured with graduated cylinder, the material weighed and the liquid measured are poured in the lump in the there-necked flask of 100ml, it is mixed to form end reaction system, the hollow plug of there-necked flask the most beyond the Great Wall, then there-necked flask is placed in water-bath, moderate-speed mixer pretreatment reaction system, at a temperature of the water-bath of 70 DEG C, make reaction system carry out reacting 12h and generate final reacting product；
D. after the final reacting product of gained in step c being cooled down, the end reaction system of final reacting product is first generated with clear water dilution, end reaction system sand core funnel after dilution is filtered, obtain final reacting product, then by deionized water by the most neutral for final reacting product washing, refilter separation, collect and obtain aqueous final reacting product, then aqueous final reacting product is placed in 60 DEG C of baking ovens 24h, i.e. prepares amphoteric ion-exchange resin.
Polymer raw material adds paraformaldehyde, and catalyst carries out chloromethyl reaction, is subsequently adding trimethylamine and carries out amination, is eventually adding acrylic acid, and ammonium persulfate carries out reaction and obtains amphoteric ion-exchange resin.Waste and old thermosetting resin is prepared as anion exchange resin by the present embodiment, and raw material used is cheap and easy to get, and the switching performance of product disclosure satisfy that the performance requirement of commercially available amphoteric ion-exchange resin.
Embodiment two:
The present embodiment is essentially identical with embodiment one, is particular in that:
In the present embodiment, a kind of method utilizing thermosetting resin to prepare amphoteric ion-exchange resin, comprise the steps:
nullA. water-bath is warming up to 80 DEG C，Using old circuit board powder as reactant feed，According to the hybrid reaction material portion rate example carrying out chemical reaction，Weigh old circuit board powder 10g、Paraformaldehyde 10g、Anhydrous zinc chloride 10g，And measure, with graduated cylinder, the concentrated hydrochloric acid that 100ml concentration is 38wt.%，The material weighed and concentrated hydrochloric acid are poured in 500ml there-necked flask in the lump，It is mixed to form pretreatment reaction system，The hollow plug of there-necked flask the most beyond the Great Wall，Then there-necked flask is placed in water-bath，Moderate-speed mixer pretreatment reaction system，At a temperature of the water-bath of 80 DEG C，Make reaction system carry out reacting 8h and generate first set reaction product，After question response terminates，Close water-bath，Take out there-necked flask，The reaction system generating first set reaction product is proceeded in 500ml beaker，There-necked flask is washed in triplicate by deionized water，Liquid after washing is poured in beaker，The reaction system sand core funnel containing first set reaction product in beaker is filtered，Obtain first set reaction product，And by deionized water by the most neutral for the washing of first set reaction product，Refilter separation，Collect and obtain aqueous first set reaction product，Then aqueous first set reaction product is placed in 60 DEG C of baking ovens 24h，Dry to constant weight，Obtain the first set reaction product being dried；
B. the first set reaction product 10g being dried obtained in step a it is taken at, and measure 35g trimethylamine, being mixed with trimethylamine by first set reaction product inserts in another beaker, then in fume hood, place 24h after sealing beaker mouth with preservative film, carry out aminating reaction, generate second time product, after question response terminates, the reaction system sand core funnel containing second time product in beaker is filtered, obtain second time product, and by deionized water by the most neutral for second time product washing, refilter separation, collect and obtain aqueous second time product, then aqueous second time product is placed in 60 DEG C of baking ovens 24h, dry to constant weight, obtain the second time product being dried；
The most again water-bath is warming up to 80 DEG C, weigh second time product 10g being dried, the potassium peroxydisulfate of 0.6g obtained in stepb, 7ml acrylic acid and 30ml deionized water is measured with graduated cylinder, the material weighed and the liquid measured are poured in the lump in the there-necked flask of 100ml, it is mixed to form end reaction system, the hollow plug of there-necked flask the most beyond the Great Wall, then there-necked flask is placed in water-bath, moderate-speed mixer pretreatment reaction system, at a temperature of the water-bath of 80 DEG C, make reaction system carry out reacting 12h and generate final reacting product；
D. this step is identical with embodiment one.
Embodiment three:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, a kind of method utilizing thermosetting resin to prepare amphoteric ion-exchange resin, comprise the steps:
nullA. using bisphenol A type epoxy resin and IPD as first set reaction raw material，First 50g bisphenol A type epoxy resin and 6g IPD are weighed，After stirring，12h is solidified at 80 DEG C，Then the cured product pulverizer obtained is pulverized，Product after pulverizing screens with the sieve of 25 mesh and 40 mesh，Obtain the first set reaction raw material granular materials between 25 ~ 40 mesh，Put into oven drying，Water-bath is warming up to 80 DEG C，Then according to carry out the hybrid reaction material portion rate example of chemical reaction，Weigh first set reaction raw material granular materials 10g、Paraformaldehyde 10g、Anhydrous zinc chloride 15g，And measure, with graduated cylinder, the concentrated hydrochloric acid that 200ml concentration is 38wt.%，The material weighed and concentrated hydrochloric acid are poured in 500ml there-necked flask in the lump，It is mixed to form pretreatment reaction system，The hollow plug of there-necked flask the most beyond the Great Wall，Then there-necked flask is placed in water-bath，Moderate-speed mixer pretreatment reaction system，At a temperature of the water-bath of 80 DEG C，Make reaction system carry out reacting 7h and generate first set reaction product，After question response terminates，Close water-bath，Take out there-necked flask，The reaction system generating first set reaction product is proceeded in 500ml beaker，There-necked flask is washed in triplicate by deionized water，Liquid after washing is poured in beaker，The reaction system sand core funnel containing first set reaction product in beaker is filtered，Obtain first set reaction product，And by deionized water by the most neutral for the washing of first set reaction product，Refilter separation，Collect and obtain aqueous first set reaction product，Then aqueous first set reaction product is placed in 60 DEG C of baking ovens 24h，Dry to constant weight，Obtain the first set reaction product being dried；
B. the first set reaction product 10g being dried obtained in step a it is taken at, and measure 30g trimethylamine, being mixed with trimethylamine by first set reaction product inserts in another beaker, then in fume hood, place 24h after sealing beaker mouth with preservative film, carry out aminating reaction, generate second time product, after question response terminates, the reaction system sand core funnel containing second time product in beaker is filtered, obtain second time product, and by deionized water by the most neutral for second time product washing, refilter separation, collect and obtain aqueous second time product, then aqueous second time product is placed in 60 DEG C of baking ovens 24h, dry to constant weight, obtain the second time product being dried；
The most again water-bath is warming up to 70 DEG C, weigh second time product 10g being dried, the potassium peroxydisulfate of 0.1g obtained in stepb, 2ml acrylic acid and 30ml deionized water is measured with graduated cylinder, the material weighed and the liquid measured are poured in the lump in the there-necked flask of 100ml, it is mixed to form end reaction system, the hollow plug of there-necked flask the most beyond the Great Wall, then there-necked flask is placed in water-bath, moderate-speed mixer pretreatment reaction system, at a temperature of the water-bath of 70 DEG C, make reaction system carry out reacting 12h and generate final reacting product；
D. this step is identical with embodiment one.
Experiment detection is analyzed:
The amphoteric ion-exchange resin preparing above-described embodiment carries out physicochemical properties experimental analysis, the specific performance parameter of preparation-obtained amphoteric ion-exchange resin is as follows: its granular size is 40-120 mesh, cation exchange capacity (CEC) is up to 0.7274 mmol/g, anion exchange capacity is up to 0.7023mmol/g, and maximum operation (service) temperature can reach 100 DEG C.
Above the embodiment of the present invention is illustrated; but the invention is not restricted to above-described embodiment; multiple change can also be made according to the purpose of the innovation and creation of the present invention; the change made under all Spirit Essences according to technical solution of the present invention and principle, modify, substitute, combine or simplify; all should be the substitute mode of equivalence; as long as meeting the goal of the invention of the present invention; utilize thermosetting resin to prepare the know-why of method and the inventive concept of amphoteric ion-exchange resin without departing from the present invention, broadly fall into protection scope of the present invention.
Claims (7)
1. one kind utilizes the method that amphoteric ion-exchange resin prepared by thermosetting resin, it is characterised in that comprise the steps:
A. using the mixture of any one high molecular polymer in epoxy resin and phenolic resin or the most several high molecular polymers as reactant feed, according to the hybrid reaction material portion rate example carrying out chemical reaction, basic for reference with the number of reactant feed, take 10 parts of reactant feed, the concentrated hydrochloric acid that concentration is 38wt.% of 0-20 part catalyst and 30-200ml is mixed and stirred for, form pretreatment reaction system, reaction system is made to carry out reacting 4-9h under the reaction temperature of 50-100 DEG C, after reaction system to be pre-treated is cooled to room temperature, reaction terminates, then carry out filtering by the product generated in pretreatment reaction system and separate, thus collect and obtain first solid product；
B. in step a, the washing of gained first solid matter with deionized water to neutral, separation will be refiltered, and collect and obtain original solid material, then carry out drying to constant weight by original solid material；
C. the number of the reactant feed to use in step a is basic for reference, take 10 parts in stepb gained be dried original solid material, and measure the trimethylamine of 10-60 part, being mixed with trimethylamine by original solid material inserts in beaker, then in fume hood, place 3-24h after sealing beaker mouth, carry out aminating reaction, after question response terminates, obtain intermediate solid product；
D. the intermediate solid product of gained in step c is washed with deionized to neutrality, refilters separation, collect and obtain intermediate solid material, then carry out drying to constant weight by intermediate solid material；
E. the number of the reactant feed to use in step a is basic for reference, carry out the intermediate solid material of 10 parts of gained in step d, 0.1-1.5 part potassium peroxydisulfate, the acrylic acid of 1-15ml and 30-50ml deionized water being mixed and stirred for forming end reaction system, end reaction system is made to carry out reacting 8-15h under the reaction temperature of 70-80 DEG C, after end reaction system is cooled to room temperature, reaction terminates, then the product generated in end reaction system is filtered, thus collect and obtain final solid product；
F. the final solid matter with deionized water of gained in step e is washed to neutral, refilter separation, collect and obtain final solid material, then final solid material is dried, i.e. prepare amphoteric ion-exchange resin.
Utilize the method that amphoteric ion-exchange resin prepared by thermosetting resin the most according to claim 1, it is characterized in that: in described step a, described catalyst uses anhydrous zinc chloride, according to the mixed reactant material number ratio carrying out chemical reaction, take 10 parts of paraformaldehydes again as another kind of reaction mass, make paraformaldehyde, anhydrous zinc chloride, reactant feed and concentrated hydrochloric acid be mixed and stirred in the lump forming pretreatment reaction system, carry out chloromethyl reaction, prepare first solid product.
Utilize the method that amphoteric ion-exchange resin prepared by thermosetting resin the most according to claim 2, it is characterised in that: in described step a, c and e, the number of each material is weight portion, and the number correspondence unit of weight of each material is the gravimetric value of g.
Utilize the method that amphoteric ion-exchange resin prepared by thermosetting resin the most according to claim 3, it is characterized in that: in described step a, according to the hybrid reaction material portion rate example carrying out chemical reaction, basic for reference with the number of reactant feed, the concentrated hydrochloric acid taking the reactant feed of 10 g, the paraformaldehyde of 10g, the anhydrous zinc chloride of 10-20g and 100-200ml is mixed and stirred for, and forms pretreatment reaction system.
Utilize the method that amphoteric ion-exchange resin prepared by thermosetting resin the most according to claim 3, it is characterized in that: in described step c, the number of the reactant feed to use in step a is basic for reference, take the original solid material being dried of 10g gained in stepb, and measure the trimethylamine of 30-35g, being mixed with trimethylamine by original solid material inserts in beaker, carries out aminating reaction.
Utilize the method that amphoteric ion-exchange resin prepared by thermosetting resin the most according to claim 3, it is characterized in that: in described step e, the number of the reactant feed to use in step a is basic for reference, carry out 10g the intermediate solid material of gained, the potassium peroxydisulfate of 0.1-1.5g, the acrylic acid of 2-13ml and 30-50ml deionized water in step d being mixed and stirred for forming end reaction system, make end reaction system react.
7. according to any one in claim 1～6, utilize the method that amphoteric ion-exchange resin prepared by thermosetting resin, it is characterised in that: in described step a, use the old circuit board powder that granularity is 25 ~ 40 mesh being dried as reactant feed.
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| CN106378212A (en) * | 2016-09-27 | 2017-02-08 | 南京工程学院 | Branched-structure-containing weakly-acidic cation exchange resin and preparation method thereof |
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| CN105859981B (en) | 2018-07-10 |
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