CN109320754A - A kind of environment-friendly preparation method thereof of cellular polyurethane carrier - Google Patents

A kind of environment-friendly preparation method thereof of cellular polyurethane carrier Download PDF

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Publication number
CN109320754A
CN109320754A CN201811205346.XA CN201811205346A CN109320754A CN 109320754 A CN109320754 A CN 109320754A CN 201811205346 A CN201811205346 A CN 201811205346A CN 109320754 A CN109320754 A CN 109320754A
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polyurethane
obtains
temperature
reaction
environment
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不公告发明人
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/08—Supercritical fluid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2439/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Derivatives of such polymers
    • C08J2439/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
    • C08J2439/06—Homopolymers or copolymers of N-vinyl-pyrrolidones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The invention discloses a kind of environment-friendly preparation method thereofs of cellular polyurethane carrier, include the following steps: step 1, polyurethane is added into pyroreaction kettle, and microwave reaction 2-4h obtains polyurethane liquid；Step 2, polyurethane liquid is added to spraying device, and in even spraying to supercritical carbon dioxide fluid, obtains suspension；Step 3, ultrasonic reaction 2-4h is added into dehydrated alcohol in polyvinylpyrrolidone, obtains dispersion alcohol liquid；Step 4, dispersion alcohol liquid is uniformly sprayed at ultrasonic reaction 2-4h in suspension, obtains suspended mixed liquor；Step 5, suspended mixed liquor is put into vacuum distillation reaction kettle and carries out gradient Depressor response, until being evaporated completely, obtain sediment, sediment is then put into constant temperature and pressure in mold and reacts 0.5-1h, obtains polyurethane precursors after cooling；Step 6, polyurethane precursors are put into ultrasonic reaction 2-3h in dehydrated alcohol, drying obtains cellular polyurethane after taking-up.The present invention solves the problems, such as that prior art carrier hole uniformity is poor.

Description

A kind of environment-friendly preparation method thereof of cellular polyurethane carrier
Technical field
The invention belongs to polyurethane material technical fields, and in particular to a kind of green preparation side of cellular polyurethane carrier Method.
Background technique
As environmental requirement is stringent year by year, there are COD removal efficiency is not high in traditional wastewater biological treatment, nitrification effect The problems such as rate is poor, especially for the higher waste water of some ammonia-nitrogen contents, removal effect is undesirable, it is difficult to reach increasingly strict Sewage treatment discharge standard, much the sewage treatment plants that have built up face and improve processing capacity and raising processing at present The problem of index.In the case where existing structures are constant, the processing capacity for improving unit volume is a kind of simple, effective side Method.
Generalling use carrier is a kind of effective method for improving the concentration of microorganism in reactor, not only be can be improved anti- The volumetric loading and treatment effeciency of device are answered, and traditional biological embrane method anti impulsion load, sludge can be improved by using carrier Age length and the few feature of surplus sludge volume, and efficient and the characteristics of going slick of active sludge.However, actually making With in the process, the hole of carrier is uniformly very poor, easily causes the problem of local velocity unevenness.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of environment-friendly preparation method thereof of cellular polyurethane carrier, solves Prior art carrier hole uniformity is poor, causes the problem of local velocity unevenness, it is overcritical with constant temperature and pressure by way of Obtain the uniform cellular polyurethane of hole.
To realize the above technical purpose, the technical scheme is that
A kind of environment-friendly preparation method thereof of cellular polyurethane carrier, includes the following steps:
Step 1, polyurethane is added into pyroreaction kettle, microwave reaction 2-4h obtains polyurethane liquid；
Step 2, polyurethane liquid is added to spraying device, then in even spraying to supercritical carbon dioxide fluid, Obtain suspension；
Step 3, ultrasonic reaction 2-4h is added into dehydrated alcohol in polyvinylpyrrolidone, obtains dispersion alcohol liquid；
Step 4, dispersion alcohol liquid is uniformly sprayed in suspension, then ultrasonic reaction 2-4h, obtains suspended mixed liquor；
Step 5, suspended mixed liquor is put into vacuum distillation reaction kettle and carries out gradient Depressor response, until be evaporated completely, Sediment is obtained, sediment is then put into constant temperature and pressure in mold and reacts 0.5-1h, obtains polyurethane precursors after cooling；
Step 6, polyurethane precursors are put into ultrasonic reaction 2-3h in dehydrated alcohol, drying obtains porous poly- ammonia after taking-up Ester.
The power of microwave reaction in the step 1 is 800-1200W, and temperature is 140-160 DEG C.
The mass ratio of polyurethane and supercritical carbon dioxide fluid in the step 2 is 1:5-10, the spraying spray Mist speed is 10-15mL/min, and temperature is 140-150 DEG C.
Concentration of the polyvinylpyrrolidone in dehydrated alcohol in the step 3 is 40-80g/L, the ultrasonic reaction Supersonic frequency be 20-40kHz, temperature be 40-50 DEG C.
The volume ratio of dispersion alcohol liquid and suspension in the step 4 is 3:2-7, and the spray rate uniformly sprayed is 1-4mL/min, the supersonic frequency of the ultrasonic reaction are 20-40kHz, and temperature is 40-60 DEG C.
The program of gradient Depressor response in the step 5 is as follows:
Temperature The ratio of pressure and atmospheric pressure Time
50-70℃ 80-90% 2-3h
70-80℃ 70-80% 1-2h
100-105℃ 65% 1-2h
120℃ 60% 3h
The temperature of constant temperature and pressure reaction in the step 5 is 2-4MPa, and pressure is 140-160 DEG C, the drop of the cooling Warm speed is 5-10 DEG C/min.
Dehydrated alcohol in the step 6 submerges polyurethane precursors, and the frequency of the ultrasonic reaction is 40-80kHz, Temperature is 30-50 DEG C, and the temperature of the drying is 100-110 DEG C.
Polyurethane is put into reaction kettle and is converted into polyurethane liquid under the conditions of temperature by step 1, during heating up liquefaction, Since temperature needs certain conduction time, so liquefying speed is very slow；Microwave reaction can ensure polyurethane using vibration It is inside and outside heat simultaneously, promoted liquefaction pores over, obtain uniformly and the polyurethane liquid without particulate mass.
Step 2 enters to polyurethane liquid in supercritical carbon dioxide fluid in spraying mode, since polyurethane liquid exists Temperature decline causes polyurethane liquid to be converted into polyurethane particles in spray process, is finally dispersed in stream of supercritical carbon dioxide Body forms the suspension of dispersion.
Polyvinylpyrrolidone is added into dehydrated alcohol step 3, forms dispersion alcohol liquid, is then mentioned using ultrasonic reaction Rate of dispersion of the polyvinylpyrrolidone in dehydrated alcohol is risen, polyvinylpyrrolidine can be eliminated using the vibration of ultrasonic reaction Interfacial tension of the ketone in dehydrated alcohol.
Step 4 is uniformly sprayed at alcohol liquid is dispersed in suspension, and dehydrated alcohol and supercritical carbon dioxide fluid being capable of shapes At dissolving each other, so polyvinylpyrrolidone rapidly enters in mixed liquor, and can act on polyurethane particles formed it is suspended Dispersion, polyvinylpyrrolidone are wrapped in polyurethane particles surface；Ultrasonic reaction is able to ascend polyurethane and polyethylene pyrrole Connection uniformity between pyrrolidone can solve the Local enrichment of polyvinylpyrrolidone by the clutch of ultrasound, mention Dispersion effect is risen.
Carbon dioxide and dehydrated alcohol successively can be discharged in such a way that gradient is evaporated under reduced pressure for step 5, and gradient subtracts The mode of pressure distillation can ensure the complete discharge of carbon dioxide and dehydrated alcohol, reduce residual quantity, obtain polyvinylpyrrolidine The polyurethane particles of ketone package；Sediment is put into mold to and is formed constant temperature and pressure reaction, polyurethane turns under the conditions of temperature Liquid is turned to, polyvinylpyrrolidone formation anti-package is wrapped up in, compacting forms the polyurethane precursors being evenly distributed, and cooling solid Change.
Polyurethane precursors in step 6 ultrasonic reaction in dehydrated alcohol, not merely with dehydrated alcohol to polyethylene pyrrole The dissolution of pyrrolidone is capable of forming pore structure, and ultrasonic reaction is able to ascend between polyurethane and polyvinylpyrrolidone Gap further improve polyvinylpyrrolidone in nothing and by the interfacial tension of polyvinylpyrrolidone and dehydrated alcohol Dissolution in water-ethanol obtains cellular polyurethane after drying.
The purity of dehydrated alcohol and carbon dioxide gas after gradient vacuum distillation reaction is higher, can recycle benefit again With formation dehydrated alcohol and carbon dioxide gas；Contain polyvinylpyrrolidone in solution in step 6 after ultrasound, is The anhydrous alcohol solution of polyvinylpyrrolidone, there are certain concentration differences with the dispersion alcohol liquid in step 3, repeat after capable of recycling It utilizes.
From the above, it can be seen that the present invention has following advantages:
1. it is poor that the present invention solves prior art carrier hole uniformity, the problem of local velocity unevenness is caused, by super It is critical to obtain the uniform cellular polyurethane of hole with constant temperature and pressure mode.
2. provided by the invention, preparation method is simple, and material source is extensive, and remaining solvent and gas in reaction It can recycle, reduce environmental protection pressure.
Specific embodiment
The present invention will be described in detail in conjunction with the embodiments, but does not do any restriction to claim of the invention.
Embodiment 1
A kind of environment-friendly preparation method thereof of cellular polyurethane carrier, includes the following steps:
Step 1, polyurethane is added into pyroreaction kettle, microwave reaction 2h obtains polyurethane liquid；
Step 2, polyurethane liquid is added to spraying device, then in even spraying to supercritical carbon dioxide fluid, Obtain suspension；
Step 3, ultrasonic reaction 2h is added into dehydrated alcohol in polyvinylpyrrolidone, obtains dispersion alcohol liquid；
Step 4, dispersion alcohol liquid is uniformly sprayed in suspension, then ultrasonic reaction 2h, obtains suspended mixed liquor；
Step 5, suspended mixed liquor is put into vacuum distillation reaction kettle and carries out gradient Depressor response, until be evaporated completely, Sediment is obtained, sediment is then put into constant temperature and pressure in mold and reacts 0.5h, obtains polyurethane precursors after cooling；
Step 6, polyurethane precursors are put into ultrasonic reaction 2h in dehydrated alcohol, drying obtains porous poly- ammonia after taking-up Ester.
The power of microwave reaction in the step 1 is 800W, and temperature is 140 DEG C.
The mass ratio of polyurethane and supercritical carbon dioxide fluid in the step 2 is 1:5, the spraying spraying speed Degree is 10mL/min, and temperature is 140 DEG C.
Concentration of the polyvinylpyrrolidone in dehydrated alcohol in the step 3 is 40g/L, and the ultrasonic reaction surpasses Acoustic frequency is 20kHz, and temperature is 40 DEG C.
The volume ratio of dispersion alcohol liquid and suspension in the step 4 is 3:2, and the spray rate uniformly sprayed is 1mL/min, the supersonic frequency of the ultrasonic reaction are 20kHz, and temperature is 40 DEG C.
The program of gradient Depressor response in the step 5 is as follows:
Temperature The ratio of pressure and atmospheric pressure Time
50℃ 80% 2h
70℃ 70% 1h
100℃ 65% 1h
120℃ 60% 3h
The temperature of constant temperature and pressure reaction in the step 5 is 2MPa, and pressure is 140 DEG C, the cooling rate of the cooling For 5 DEG C/min.
Dehydrated alcohol in the step 6 submerges polyurethane precursors, and the frequency of the ultrasonic reaction is 40kHz, temperature Degree is 30 DEG C, and the temperature of the drying is 100 DEG C.
Embodiment 2
A kind of environment-friendly preparation method thereof of cellular polyurethane carrier, includes the following steps:
Step 1, polyurethane is added into pyroreaction kettle, microwave reaction 4h obtains polyurethane liquid；
Step 2, polyurethane liquid is added to spraying device, then in even spraying to supercritical carbon dioxide fluid, Obtain suspension；
Step 3, ultrasonic reaction 4h is added into dehydrated alcohol in polyvinylpyrrolidone, obtains dispersion alcohol liquid；
Step 4, dispersion alcohol liquid is uniformly sprayed in suspension, then ultrasonic reaction 4h, obtains suspended mixed liquor；
Step 5, suspended mixed liquor is put into vacuum distillation reaction kettle and carries out gradient Depressor response, until be evaporated completely, Sediment is obtained, sediment is then put into constant temperature and pressure in mold and reacts 1h, obtains polyurethane precursors after cooling；
Step 6, polyurethane precursors are put into ultrasonic reaction 3h in dehydrated alcohol, drying obtains porous poly- ammonia after taking-up Ester.
The power of microwave reaction in the step 1 is 1200W, and temperature is 160 DEG C.
The mass ratio of polyurethane and supercritical carbon dioxide fluid in the step 2 is 1:10, and described spraying is sprayed Speed is 15mL/min, and temperature is 150 DEG C.
Concentration of the polyvinylpyrrolidone in dehydrated alcohol in the step 3 is 80g/L, and the ultrasonic reaction surpasses Acoustic frequency is 40kHz, and temperature is 50 DEG C.
The volume ratio of dispersion alcohol liquid and suspension in the step 4 is 3:7, and the spray rate uniformly sprayed is 4mL/min, the supersonic frequency of the ultrasonic reaction are 40kHz, and temperature is 60 DEG C.
The program of gradient Depressor response in the step 5 is as follows:
Temperature The ratio of pressure and atmospheric pressure Time
70℃ 90% 3h
80℃ 80% 2h
105℃ 65% 2h
120℃ 60% 3h
The temperature of constant temperature and pressure reaction in the step 5 is 4MPa, and pressure is 160 DEG C, the cooling rate of the cooling For 10 DEG C/min.
Dehydrated alcohol in the step 6 submerges polyurethane precursors, and the frequency of the ultrasonic reaction is 80kHz, temperature Degree is 50 DEG C, and the temperature of the drying is 110 DEG C.
Embodiment 3
A kind of environment-friendly preparation method thereof of cellular polyurethane carrier, includes the following steps:
Step 1, polyurethane is added into pyroreaction kettle, microwave reaction 3h obtains polyurethane liquid；
Step 2, polyurethane liquid is added to spraying device, then in even spraying to supercritical carbon dioxide fluid, Obtain suspension；
Step 3, ultrasonic reaction 3h is added into dehydrated alcohol in polyvinylpyrrolidone, obtains dispersion alcohol liquid；
Step 4, dispersion alcohol liquid is uniformly sprayed in suspension, then ultrasonic reaction 3h, obtains suspended mixed liquor；
Step 5, suspended mixed liquor is put into vacuum distillation reaction kettle and carries out gradient Depressor response, until be evaporated completely, Sediment is obtained, sediment is then put into constant temperature and pressure in mold and reacts 1h, obtains polyurethane precursors after cooling；
Step 6, polyurethane precursors are put into ultrasonic reaction 3h in dehydrated alcohol, drying obtains porous poly- ammonia after taking-up Ester.
The power of microwave reaction in the step 1 is 1000W, and temperature is 150 DEG C.
The mass ratio of polyurethane and supercritical carbon dioxide fluid in the step 2 is 1:8, the spraying spraying speed Degree is 13mL/min, and temperature is 145 DEG C.
Concentration of the polyvinylpyrrolidone in dehydrated alcohol in the step 3 is 60g/L, and the ultrasonic reaction surpasses Acoustic frequency is 30kHz, and temperature is 45 DEG C.
The volume ratio of dispersion alcohol liquid and suspension in the step 4 is 3:5, and the spray rate uniformly sprayed is 2mL/min, the supersonic frequency of the ultrasonic reaction are 30kHz, and temperature is 50 DEG C.
The program of gradient Depressor response in the step 5 is as follows:
Temperature The ratio of pressure and atmospheric pressure Time
60℃ 85% 3h
75℃ 75% 1h
103℃ 65% 2h
120℃ 60% 3h
The temperature of constant temperature and pressure reaction in the step 5 is 3MPa, and pressure is 150 DEG C, the cooling rate of the cooling For 8 DEG C/min.
Dehydrated alcohol in the step 6 submerges polyurethane precursors, and the frequency of the ultrasonic reaction is 60kHz, temperature Degree is 40 DEG C, and the temperature of the drying is 105 DEG C.
Performance detection
Embodiment 1 Embodiment 2 Embodiment 3
Aperture 0.2mm 0.1mm 0.1mm
Pore-size distribution rate 94% 95% 98%
Thermal coefficient 0.021w/(m·k) 0.020w/(m·k) 0.019w/(m·k)
Compression strength 2.18kg/cm2 2.11kg/cm2 2.20kg/cm2
In conclusion the invention has the following advantages that
1. it is poor that the present invention solves prior art carrier hole uniformity, the problem of local velocity unevenness is caused, by super It is critical to obtain the uniform cellular polyurethane of hole with constant temperature and pressure mode.
2. provided by the invention, preparation method is simple, and material source is extensive, and remaining solvent and gas in reaction It can recycle, reduce environmental protection pressure.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this Technical solution described in inventive embodiments.Those skilled in the art should understand that still can be carried out to the present invention Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it It is interior.

Claims (8)

1. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier, characterized by the following steps:
Step 1, polyurethane is added into pyroreaction kettle, microwave reaction 2-4h obtains polyurethane liquid；
Step 2, polyurethane liquid is added to spraying device, then in even spraying to supercritical carbon dioxide fluid, is obtained Suspension；
Step 3, ultrasonic reaction 2-4h is added into dehydrated alcohol in polyvinylpyrrolidone, obtains dispersion alcohol liquid；
Step 4, dispersion alcohol liquid is uniformly sprayed in suspension, then ultrasonic reaction 2-4h, obtains suspended mixed liquor；
Step 5, suspended mixed liquor is put into vacuum distillation reaction kettle and carries out gradient Depressor response, until being evaporated completely, obtained Then sediment is put into constant temperature and pressure in mold and reacts 0.5-1h, obtains polyurethane precursors after cooling by sediment；
Step 6, polyurethane precursors are put into ultrasonic reaction 2-3h in dehydrated alcohol, drying obtains cellular polyurethane after taking-up.
2. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step The power of microwave reaction in 1 is 800-1200W, and temperature is 140-160 DEG C.
3. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step The mass ratio of polyurethane and supercritical carbon dioxide fluid in 2 is 1:5-10, and the spraying spray velocity is 10-15mL/ Min, temperature are 140-150 DEG C.
4. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step Concentration of the polyvinylpyrrolidone in dehydrated alcohol in 3 is 40-80g/L, and the supersonic frequency of the ultrasonic reaction is 20- 40kHz, temperature are 40-50 DEG C.
5. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step The volume ratio of dispersion alcohol liquid and suspension in 4 is 3:2-7, and the spray rate uniformly sprayed is 1-4mL/min, described super The supersonic frequency of phonoresponse is 20-40kHz, and temperature is 40-60 DEG C.
6. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step The program of gradient Depressor response in 5 is as follows:
7. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step The temperature of constant temperature and pressure reaction in 5 is 2-4MPa, and pressure is 140-160 DEG C, the cooling rate of the cooling is 5-10 DEG C/ min。
8. a kind of environment-friendly preparation method thereof of cellular polyurethane carrier according to claim 1, it is characterised in that: the step Dehydrated alcohol in 6 submerges polyurethane precursors, and the frequency of the ultrasonic reaction is 40-80kHz, and temperature is 30-50 DEG C, institute The temperature for stating drying is 100-110 DEG C.
CN201811205346.XA 2018-10-16 2018-10-16 A kind of environment-friendly preparation method thereof of cellular polyurethane carrier Pending CN109320754A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114854189A (en) * 2022-06-07 2022-08-05 北京康宇建医疗器械有限公司 High-permeability polyurethane transparent film and preparation method and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101439269A (en) * 2008-12-04 2009-05-27 南昌航空大学 Method for preparing thermoplastic polyurethane elastic hollow fiber membrane
CN103787509A (en) * 2014-01-23 2014-05-14 河北科技大学 Porous functional carrier preparation device and method for preparing porous macromolecular organic carrier applied to sewage treatment by using porous functional carrier preparation
US20160273159A1 (en) * 2015-03-18 2016-09-22 San Fang Chemical Industry Co., Ltd. Thermoplastic artificial leather, method for manufacturing the same and thermoplastic composite laminate
CN106189179A (en) * 2016-07-07 2016-12-07 苏州奥斯汀新材料科技有限公司 A kind of extrusion foaming prepares the method for TPU expanded material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101439269A (en) * 2008-12-04 2009-05-27 南昌航空大学 Method for preparing thermoplastic polyurethane elastic hollow fiber membrane
CN103787509A (en) * 2014-01-23 2014-05-14 河北科技大学 Porous functional carrier preparation device and method for preparing porous macromolecular organic carrier applied to sewage treatment by using porous functional carrier preparation
US20160273159A1 (en) * 2015-03-18 2016-09-22 San Fang Chemical Industry Co., Ltd. Thermoplastic artificial leather, method for manufacturing the same and thermoplastic composite laminate
CN106189179A (en) * 2016-07-07 2016-12-07 苏州奥斯汀新材料科技有限公司 A kind of extrusion foaming prepares the method for TPU expanded material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114854189A (en) * 2022-06-07 2022-08-05 北京康宇建医疗器械有限公司 High-permeability polyurethane transparent film and preparation method and application thereof
CN114854189B (en) * 2022-06-07 2023-08-25 北京康宇建医疗器械有限公司 High-permeability polyurethane transparent film and preparation method and application thereof

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