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Potting material, hollow-fiber module, and process for producing the same

A potting agent, hollow fiber group technology, applied in chemical instruments and methods, adhesives, membranes, etc., can solve the problems of stress relaxation, reduction of filtration efficiency, reduction of effective membrane area of ​​porous hollow fiber group, etc. The effect of securing the membrane area and excellent liquid tightness

Inactive Publication Date: 2009-01-21
KUREHA KAGAKU KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the following phenomenon is very likely to occur: the potting agent soaked in the end of the porous hollow fiber creeps up to the desired height position along the gap of the hollow fiber due to capillary phenomenon
As this potting agent creep unnecessarily reduces the effective membrane area of ​​the porous hollow fiber stack, it results in a reduction in filtration efficiency using hollow fiber modules
[0006] In addition, when the potting part of the above-mentioned two-layer structure is formed, the potting agent for forming the lower layer creeps up, and thus the potting agent for forming the upper layer cannot sufficiently spread around the porous hollow fiber, and as a result , often cannot fully obtain the effect of stress relaxation by using the upper soft layer

Method used

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  • Potting material, hollow-fiber module, and process for producing the same
  • Potting material, hollow-fiber module, and process for producing the same
  • Potting material, hollow-fiber module, and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] First, a two-component polyurethane resin material SA-7082 low-viscosity product (manufactured by Sanyu-Rec Co., Ltd.) as a resin material, and a filler of fine silica powder Aerosil 200 (manufactured by Japan Aerosil Co., Ltd., average of primary particles) are prepared. The particle size is 12nm).

[0109] Then, 0.38 parts by weight of fine silica powder was added to 100 parts by weight of the diol component of the polyurethane resin material, and the above components were mixed using a blender (AWATORI Nentaro MX-201 manufactured by Thinky Co., Ltd.) for 2 minutes. Next, 100.38 parts by weight of the mixture and 52 parts by weight of the isocyanate component of the polyurethane resin material were mixed to prepare the potting agent of Example 1. In this potting agent, the filler content relative to 100 parts by weight of the resin material is 0.25 parts by weight.

Embodiment 2

[0111] Except that fine silica powder Aerosil R972 (manufactured by Japan Aerosil Co., Ltd., the average particle size of primary particles is 16 nm) was used as the filler instead of Aerosil 200, the same operation as in Example 1 was performed to prepare the potting agent of Example 2.

Embodiment 3

[0113] First, a silicone resin material RTV rubber KE103 (manufactured by Shin-Etsu Chemical Co., Ltd.) as a resin material and a fine silica powder Aerosil 200 as a filler are prepared.

[0114] Then, 0.75 parts by weight of silica fine powder was mixed with respect to 100 parts by weight of the main ingredient of the silicone resin material. Next, 100 parts by weight of the mixture and 5 parts by weight of the curing agent of the silicone resin material were mixed to prepare the potting agent of Example 3. In this potting agent, the filler content relative to 100 parts by weight of the resin material is 0.71 parts by weight.

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Abstract

A potting material which, when used in stationary potting, is less apt to scramble up and can sufficiently penetrate into the spaces among porous hollow fibers. The potting material is one for fixing an end part of a group of porous hollow fibers. It comprises a resin material and a filler, wherein the content of the filler is up to the filler content corresponding to a rising point in a curve showing changes in viscosity of the potting material with changing filler content.

Description

Technical field [0001] The invention relates to a potting agent for fixing the end of a porous hollow fiber group formed by a plurality of porous hollow fibers, a hollow fiber component and a manufacturing method thereof. Background technique [0002] The hollow fiber module is a filtration device that can perform precision filtration or ultrafiltration using hollow fibers (hollow fiber membranes), and is expected to be used in fields such as water purification. As this hollow fiber module, there is known a module in which a porous hollow fiber bundle is introduced into a cylindrical container (housing) (see Patent Document 1). In addition, as a hollow fiber module, a flat type (curtain type) hollow fiber module in which a plurality of porous hollow fibers are arranged in a curtain shape is also known (see Patent Document 2). In the above-mentioned hollow fiber module, the two ends of a group of porous hollow fibers formed by a plurality of porous hollow fibers are fixed (potted)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/00B01D63/02C09J201/00
CPCB01D63/021B01D63/023B01D2323/42B01D63/0233
Inventor 多田靖浩日野雅之海老原康志水野斌也
Owner KUREHA KAGAKU KOGYO KK
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