Polymer fiber material, method of producing the same and filter for filtering fluid

A manufacturing method, polymer technology, applied in the direction of membrane filter, filtration separation, fiber treatment, etc., can solve different problems

Inactive Publication Date: 2011-02-23
KURITA WATER INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] As long as the advantages of both are combined, it is expected to obtain epoch-making fibers, but as non-electrolyte polymers and electrolytic polymers, they are often dissolved in different solvents, and there is no example of simultaneous fiberization

Method used

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  • Polymer fiber material, method of producing the same and filter for filtering fluid
  • Polymer fiber material, method of producing the same and filter for filtering fluid
  • Polymer fiber material, method of producing the same and filter for filtering fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] A solution containing 10% by weight of PVDF, 8.3% by weight of Nafion, 4.2% by weight of water, 4.2% by weight of 1-propanol, and 73.3% by weight of DMAc was prepared as a solution containing a non-electrolyte polymer and an electrolytic polymer. Try spinning it under the conditions. It should be noted that since this solution tends to gel, it is heated during spinning and kept at about 45°C. image 3 This is a photograph taken with an electron microscope at a magnification of 1000 to deposit platinum on the obtained fiber.

[0100]

[0101] Such as image 3 As shown, a fiber of 200 nm can be spun, and a hybrid polymer fiber body having a thickness of 50 μm including the fiber can be produced. And, by laminating the hybrid polymer fiber body in a planar shape, a nonwoven fabric flat film having a thickness of 2 mm can be produced.

Embodiment 2

[0103] A solution containing 15% by weight of PVDF, 4.2% by weight of Nafion, 2.1% by weight of water, 2.1% by weight of 1-propanol, and 76.6% by weight of DMAc was prepared as a solution containing a non-electrolyte polymer and an electrolytic polymer. Try spinning it under the conditions. It should be noted that since this solution tends to gel, it is heated during spinning and kept at about 45°C. Figure 4 This is a photograph taken with an electron microscope at a magnification of 1000 to deposit platinum on the obtained fiber.

[0104]

[0105] Such as Figure 4 As shown, a fiber of 400 nm can be spun, and a hybrid polymer fiber body having a thickness of 50 μm including the fiber can be produced. And, by laminating the hybridized polymer fibers in a planar shape, a nonwoven fabric flat film having a thickness of 2 mm can be produced.

[0106] "Filtration Test of Dilute Metal Solution"

[0107] After the filters made of the nonwoven fabric flat membrane produced in ...

Embodiment 3

[0116] Add 40 mL of DMAc as a solvent having a higher boiling point than water to 50 mL of an electrolytic polymer solution of 20% by weight of Nafion, 40% by weight of 1-propanol, and 40% by weight of water, and keep at a temperature of 100°C for 1 hour, and then at a temperature of 80°C. Keep at 60°C for 2 hours and 8 hours at 60°C to slowly evaporate water and 1-propanol whose boiling point is lower than DMAc, and prepare Nafion 20% by weight, DMAc 79-80% by weight, 1-propanol and water as An electrolytic polymer solution (second solution) of 1% by weight or less. The δH at this time was 5.0.

[0117] This second solution was mixed with a non-electrolyte polymer solution (first solution) of 20% by weight of PVDF and 80% by weight of DMAc at a weight ratio of 5:5 to prepare PVDF 10% by weight as a solution containing a non-electrolyte polymer and an electrolytic polymer. %, Nafion 10% by weight, DMAc 79-80% by weight mixed solution

[0118] Spinning was performed under the...

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Abstract

A hybrid polymer fiber material which contains a non-electrolytic polymer and an electrolytic polymer and has the characteristics and advantages of both of these polymers; a method of producing the same; and a filter comprising this hybrid polymer fiber material. A voltage is applied between a discharge port (1) and a target (the opposite face) (3) with the discharge port (1) side being positive while the target (3) side being negative. Then, a solution of a mixture of a non-electrolytic polymer with an electrolytic polymer is discharged from the discharge port (1) toward the target (3) so that a hybrid polymer fiber material (2) containing the non-electrolytic polymer and the electrolytic polymer is piled up on the target (3). This hybrid polymer fiber material (2) is used as a filter for filtering a fluid.

Description

technical field [0001] The present invention relates to a hybrid polymer fiber body comprising a non-electrolyte polymer and an electrolytic polymer and a manufacturing method thereof. In addition, the present invention also relates to a filter for fluid filtration comprising the hybrid polymer fiber body. Background technique [0002] Pleated ion exchange filters are widely used for high-purity treatment of ultrapure water used in semiconductor manufacturing processes and the like. This pleated ion exchange filter is an ion exchange filter in which a flat membrane such as a nonwoven fabric or a porous membrane is pleated. [0003] In the pleated ion exchange filter, flow deviation tends to occur at the folded portion of the pleats, and a sufficient removal rate cannot be obtained in the above-mentioned extremely low concentration range. Also, since the film thickness is very thin, it ruptures quickly and has a short life. As for the removal particles, long life and high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01D39/16D01D5/04D04H1/728B01D71/34B01D71/32B01J20/26D04H3/02
CPCD01F6/48B01J20/26B01J47/123C02F1/42D04H1/728B01D39/1623D04H3/02C02F2103/04B01D2239/0631B01J20/28023B01D2239/10D01D5/0038B01J47/127Y10T442/637
Inventor 川胜孝博小林秀树小川祐一
Owner KURITA WATER INDUSTRIES LTD
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