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Dry film hydrophilc agent

A dry film hydrophilic and pharmaceutical technology, which is applied in membrane technology, semi-permeable membrane separation, textiles and papermaking, etc., can solve the problems of mildew and bacterial growth on the surface of membrane materials, so as to improve the shelf life, reduce bacterial growth, The effect of reducing penetration time

Active Publication Date: 2013-12-11
SUZHOU EDGECROSS MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing hydrophilization treatment needs to ensure the wettability of the membrane itself, so it will easily lead to the growth of bacteria on the surface of the membrane material, and the occurrence of rot and mildew

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A membrane hydrophilic agent, prepared from the following components in parts by weight:

[0043]1000 parts of water;

[0044] 40 parts of polyethylene glycol polyethylene phthalate block copolymers;

[0045] 20 parts of terpolymerized block silicone oil;

[0046] 300 parts of ethanol;

[0047] 6 parts of n-hexanol;

[0048] Tween 80 5 parts;

[0049] 15 parts of op-10 surfactant;

[0050] 5 parts of sodium bisulfite;

[0051] The above-mentioned components are mixed according to parts by weight and stirred evenly to prepare the hydrophilic agent.

[0052] The hydrophilic agent is suitable for hollow fiber membranes, flat membranes or roll membranes made of PP, PVDF, PES, PS, PTFE, PE.

[0053] The hydrophilic agent soaks the hollow fiber membrane material made of PP for 5 minutes, and bakes at a high temperature of 110° C. for 3 minutes. The obtained membrane material has good hydrophilicity and ensures long-term hydrophilicity, the shrinkage rate of the membr...

Embodiment 2

[0058] A dry film hydrophilic agent, the specific components and content are (parts by weight):

[0059] 1000 parts of water;

[0060] 60 parts of polyethylene glycol polyethylene phthalate block copolymers;

[0061] 15 parts of ternary copolymerized block silicone oil;

[0062] 250 parts of ethanol;

[0063] 6 parts of n-hexanol;

[0064] Tween 80 5 parts;

[0065] 20 parts of op-10 surfactant;

[0066] 5 parts of sodium bisulfite;

[0067] The above components are mixed and evenly stirred to make a hydrophilic agent.

[0068] The hydrophilic agent is soaked into the rolled film material made of PVDF for 10 minutes, and baked at a high temperature of 120° C. for 5 minutes. The hydrophilicity of the obtained membrane material is significantly improved, and long-term hydrophilicity is ensured, the water output of the membrane material is increased, and the service life of the membrane material is improved.

[0069] The membrane material after the present invention handl...

Embodiment 3

[0073] A dry film hydrophilic agent, the specific components and content are (parts by weight):

[0074] 1000 parts of water;

[0075] 20 parts of polyethylene glycol polyethylene phthalate block copolymers;

[0076] 20 parts of terpolymerized block silicone oil;

[0077] 300 parts of ethanol;

[0078] 3 parts of n-hexanol;

[0079] Tween 80 5 parts;

[0080] 10 parts of op-10 surfactant;

[0081] 5 parts of sodium bisulfite;

[0082] The above components are mixed and evenly stirred to make a hydrophilic agent.

[0083] The hydrophilic agent is soaked into the flat membrane material made of PES for 10 minutes, and baked at a high temperature of 90° C. for 5 minutes. The hydrophilicity of the obtained membrane material is improved, the rebound rate is obviously increased, the shrinkage rate of the membrane filament is reduced, the membrane filament is hydrophilic for a long time, the water output of the membrane material is increased, and the service life of the membran...

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PUM

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Abstract

The invention relates to a dry film hydrophilc agent which is prepared from the following components in parts by weight: 1000 parts of water, 20-60 parts of polyethyleneglycol-polyethylene phthalate block copolymer, 5-20 parts of silicon oil block terpolymer, 150-300 parts of ethanol or glycerol, 0-6 parts of n-hexyl alcohol, 5-10 parts of Tween-80, 3-30 parts of op-10 surfactant and 0-5 parts of sodium bisulfite. Compared with the traditional agent, the hydrophilc agent is reasonable in formula, and the film material is hydrophilc for a long time; after the film material is immersed by the hydrophilc agent, the film can be preserved in a dry state without being immersed in liquid, thereby reducing the possibility of bacterium breeding and mildewing on the film material surface; and the invention effectively prolongs the shelf life of the film product, prolongs the service life of the film product, and enhances the water output and stability of the film product.

Description

technical field [0001] The invention relates to a mixed agent, in particular to a dry film hydrophilic agent used in making ultrafiltration membranes and microfiltration membranes. Background technique [0002] Ultrafiltration membrane is a microporous filtration membrane with uniform pore size and rated pore size range of 0.001-0.02 microns. Appropriate pressure is applied on one side of the membrane to screen out solute molecules smaller than the pore size to separate particles with a molecular weight greater than 500 Daltons and a particle size greater than 2-20 nanometers. The ultrafiltration membrane is one of the earliest developed polymer separation membranes, and the ultrafiltration device was industrialized in the 1960s. Ultrafiltration membranes are widely used in industry and have become one of the new chemical unit operations. Used in separation, concentration, purification of biological products, pharmaceutical products and food industry; also used in terminal...

Claims

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Application Information

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IPC IPC(8): D06M13/144D06M15/53D06M11/54C08J9/42C08J9/40B01D67/00B01D69/02
Inventor 陈梦泽
Owner SUZHOU EDGECROSS MEMBRANE TECH
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