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A kind of ternary fluorine-containing resin and its preparation method and application

A technology of fluorine-containing resin and trifluoropropylene, which is applied in chemical instruments and methods, textiles and papermaking, non-woven fabrics, etc., can solve the problems of hydrophilic modification instability, etc., and achieve improved water flux and low branching degree , the effect of less chain transfer

Active Publication Date: 2017-10-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the modifier is modified by blending, it is easy to elute quickly during the film formation process and the film application process, and the hydrophilic modification is unstable.

Method used

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  • A kind of ternary fluorine-containing resin and its preparation method and application
  • A kind of ternary fluorine-containing resin and its preparation method and application
  • A kind of ternary fluorine-containing resin and its preparation method and application

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Effect test

Embodiment 1

[0034] Embodiment 1, preparation of ternary fluororesin

[0035] Vacuumize the 1L reactor to remove water and air, pass carbon dioxide and then vacuumize, repeat three times; introduce 43.0g of pre-cooled vinyl acetate into the vacuumized reactor, and then press 48.0g of trifluoropropene into the vacuumized reactor monomer, heating the reactor to 35°C; then carbon dioxide was pressed into the reactor with a high-pressure plunger pump, and after the pressure reached 36MPa, 3.0g of 4wt% (CF 3 CF 2 (CF 2 OCF (CF 3 )) 2 COO) 2 The 1,1,2-trifluorotrichloroethane solution was added to the reactor to initiate polymerization; after 8 hours of polymerization, the valve was slowly opened to recover carbon dioxide and remaining monomers, and fresh carbon dioxide was repeatedly filled to extract the copolymer, and finally collected As a product, 59.3 g of a binary copolymer of vinyl acetate and trifluoropropylene was obtained.

[0036] Mix 10.0g of vinyl acetate and trifluoropropyle...

Embodiment 2

[0040] Embodiment 2, the preparation of ternary fluororesin

[0041] Vacuumize the 1L reactor to remove water and air, pass carbon dioxide and then vacuumize, repeat three times; introduce 43.0g of pre-cooled vinyl acetate into the vacuumized reactor, and then press 48.0g of trifluoropropene into the vacuumized reactor monomer, heating the reactor to 35°C; then carbon dioxide was pressed into the reactor with a high pressure plunger pump, and after the pressure reached 48MPa, 3.0g concentration of 4wt% (CF 3 CF 2 (CF 2 OCF (CF 3 )) 2 COO) 2 The 1,1,2-trifluorotrichloroethane solution was added to the reactor to initiate polymerization; after 8 hours of polymerization, the valve was slowly opened to recover carbon dioxide and remaining monomers, and fresh carbon dioxide was repeatedly filled to extract the copolymer, and finally collected As a product, 59.6 g of vinyl acetate and trifluoropropylene binary copolymer were obtained.

[0042] Mix 10.0g of vinyl acetate and tr...

Embodiment 3

[0046] Embodiment 3, the preparation of ternary fluororesin

[0047] Vacuumize the 1L reactor to remove water and air, pass carbon dioxide and then vacuumize, repeat three times; introduce 43.0g of pre-cooled vinyl acetate into the vacuumized reactor, and then press 48.0g of trifluoropropene into the vacuumized reactor monomer, heating the reactor to 35°C; then carbon dioxide was pressed into the reactor with a high-pressure plunger pump, and after the pressure reached 65MPa, 2.5g of 4wt% (CF 3 CF 2 (CF 2 OCF (CF 3 )) 2 COO) 2 The 1,1,2-trifluorotrichloroethane solution was added to the reactor to initiate polymerization; after 7 hours of polymerization, the valve was slowly opened to recover carbon dioxide and remaining monomers, and fresh carbon dioxide was repeatedly filled to extract the copolymer, and finally collected As a product, 59.9 g of a binary copolymer of vinyl acetate and trifluoropropylene was obtained.

[0048] Mix 10.0g of vinyl acetate and trifluoropro...

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Abstract

The invention relates to ternary fluorine-containing resin as well as a preparation method and an application thereof. The fluorine-containing resin is a trifluoropropene terpolymer and has a structure shown in formula (I), supercritical carbon dioxide is used as a medium, a perfluoroalkoxy peroxide oligomer is used as an initiator to initiate copolymerization of vinyl acetate and trifluoropropene, and then part of ester groups are hydrolyzed. A fluorine-containing hollow fiber membrane with the lasting hydrophilic property is prepared by general hollow fiber membrane preparation equipment with a dry-wet method to be used as a water separation membrane, the hydrophilic property of the separation membrane is improved greatly, the adsorption to substances such as protein and the like in the separation process is reduced, and the anti-pollution capacity of the membrane is improved.

Description

technical field [0001] The invention relates to a fluorine-containing resin and its preparation method and application, in particular to a ternary fluorine-containing resin, its preparation method and its application as a hollow fiber membrane material, belonging to the field of membrane separation materials. Background technique [0002] Membrane technology is a contemporary high-efficiency separation technology, which has the advantages of high separation efficiency, low energy consumption, simple process, convenient operation, and no environmental pollution. Its research and application are closely related to energy conservation, environmental protection, water resources development, utilization and regeneration, and have been highly valued by countries all over the world. [0003] The crucial aspect in the research of membrane separation technology is to select membrane materials with excellent performance. Due to the strong electronegativity of fluorine atoms, small va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F218/08C08F214/18C08F8/12C08F4/36C08F2/00D04H3/14B01D69/08
CPCY02P20/54
Inventor 徐安厚李文薇马佳晨张炉青张书香
Owner UNIV OF JINAN
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