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Hydrophilic porous polyolefin material and hydrophilic modification treatment method thereof

A treatment method and hydrophilic technology, which is applied in the field of hydrophilic porous polyolefin materials and hydrophobic porous polyolefin materials modified into hydrophilic materials, can solve the problems that have not yet involved porous polyolefin materials, cumbersome operation, etc., and achieve production The effect of low cost, simple process and wide application

Active Publication Date: 2017-06-13
亚美滤膜(南通)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has many disadvantages, for example, the obtained material is immediately hydrophilic, but repeated operations of hydrophilic treatment must be performed before each use, making the operation cumbersome, etc.
[0004] Most of the known patents or documents on modifying hydrophobic polyolefin materials to be hydrophilic only involve the surface modification of non-porous materials such as impermeable films, flat plates, and solid objects, and have not yet involved porous polyolefin materials such as semi- Permeation filter membrane, non-woven fabric, woven fabric and other materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Manufacture of 1.0 micron pore size hydrophilic polypropylene non-woven fabric

[0030] Mix and dissolve methylated melamine-formaldehyde polymer, polyethyleneimine polymer, p-toluenesulfonic acid and pure water at a weight ratio of 0.5:20:2:77.5 to prepare hydrophilic modified treatment solution; then at room temperature, soak the hydrophobic polypropylene non-woven fabric in ethanol solvent to fully wet the filter membrane for 1 minute; thereafter, take out and swing the polypropylene non-woven fabric to remove excess ethanol, and then Immerse the polypropylene non-woven fabric in the above-mentioned hydrophilic modification treatment solution for 1 minute; finally take out the polypropylene non-woven fabric and scrape off the excess modification solution on the surface, and immediately bake at 85°C for 24 hours; The treated polypropylene non-woven fabric is washed with pure water at 90° C. for 30 minutes and ethanol at room temperature for 30 minutes to remove impuri...

Embodiment 2

[0033] Manufacture of 0.2 micron pore size hydrophilic polypropylene non-woven fabric

[0034] Mix and dissolve methylated melamine-formaldehyde polymer, polyvinyl alcohol polymer, p-toluenesulfonic acid and pure water at a weight ratio of 0.2:10:1:88.8 to prepare hydrophilic modified Treatment solution. Then, at room temperature, soak the hydrophobic polypropylene non-woven fabric in ethanol solvent to fully wet the filter membrane for 1 minute; then, take out and shake the polypropylene non-woven fabric to remove excess ethanol, and then put the polypropylene non-woven fabric Soak the cloth in the above-mentioned hydrophilic modification treatment solution for 1 minute; finally take out the polypropylene non-woven fabric and scrape off the excess modification solution on the surface, and immediately bake at 85°C for 48 hours; The non-woven fabric is washed with pure water at 90° C. for 30 minutes and ethanol at room temperature for 30 minutes to remove impurities in the fil...

Embodiment 3

[0037] Manufacture of 0.2 micron pore size hydrophilic polypropylene microporous membrane

[0038] Mix and dissolve methylated melamine-formaldehyde polymer, polyethyleneimine polymer, p-toluenesulfonic acid and pure water at a weight ratio of 0.2:4:1:94.8 to prepare a filter membrane Water-based modified treatment solution; then at room temperature, the hydrophobic 0.2 micron pore diameter polypropylene filter membrane (specification: the bubble point of ethanol is 1.3 kg / cm2, and the water flow rate is 48 seconds under the pressure of 20 inches of mercury column) / 100ml pure water / 9.62cm2 filter area), soak the filter membrane in ethanol solvent to fully wet the filter membrane for 1 minute; then take out and shake the filter membrane to remove excess ethanol, and then immerse the filter membrane in the above-mentioned pro- Water-based modification treatment solution for 1 minute; finally take out the filter membrane and scrape off the excess modification solution on the sur...

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PUM

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Abstract

The invention provides a hydrophilic porous polyolefin material and a hydrophilic modification treatment method thereof. The surface and air voids of the material are covered with macromolecular layers which are formed by macromolecular reaction of hydrophilic modification treating fluid, and the treating fluid is aqueous solution which contains a macromolecular cross-linking agent with an amino group, polyvinyl alcohol or polyethyleneimine macromolecules or polyethylene primary amine or polyethylene amine macromolecules and strong acid catalysts. The material can be stored for longer than 3 months at the room temperature, and a contact angle of the material and pure water at the room temperature is smaller than 10 degrees. The material is extensive in application and can be applied to industries of filtration, purification, printing, dyeing, dialysis, detection and the like. The method includes: contacting a hydrophobic porous polyolefin material with the hydrophilic modification treating fluid; performing high-temperature treatment, cleaning and drying to make the hydrophobic porous polyolefin material into the permanent hydrophilic porous polyolefin material. The method is technically simple, efficient and low in production cost.

Description

technical field [0001] The invention relates to a permanent hydrophilic material and a permanent hydrophilic modification treatment method of a hydrophobic material, in particular to a hydrophilic porous polyolefin material and a method for modifying the hydrophobic porous polyolefin material into a hydrophilic material. Background technique [0002] Porous polyolefin materials, such as polyethylene, polypropylene, and other hydrophobic polyolefin polymers containing only carbon and hydrogen elements in their structures, have a wide range of applications due to their excellent physical and chemical properties, such as: porous polyolefin materials It can be prepared into products such as microporous filter membrane, ultrafiltration membrane, reverse osmosis membrane, and microporous fiber non-woven fabric. However, due to the hydrophobic nature of its material, when the product is directly applied to the liquid filtration or contact with aqueous liquid, there is a technical b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/26B01D67/00D06M15/423D06M15/61D06M13/256D06M101/20
CPCB01D67/0002B01D71/26D06M13/256D06M15/423D06M15/61B01D2325/36D06M2200/11D06M2101/20
Inventor 胡鹤滨刘平
Owner 亚美滤膜(南通)有限公司
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