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Hydrophilic membrane and preparation method thereof

A hydrophilic membrane, hydrophilic technology, applied in the direction of cellulose/protein conjugated rayon, conjugated synthetic polymer rayon, fiber type, etc., can solve problems such as toxic shock syndrome, skin allergic reactions, etc. , to achieve the effect of high water absorption and large specific surface area

Active Publication Date: 2020-04-21
NINGBO SOKEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these materials are synthesized by chemical methods using polymer resins, which are prone to allergic reactions to the skin. SAP can also cause health problems such as toxic shock syndrome, and foreign countries have banned the use of sanitary napkins.

Method used

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  • Hydrophilic membrane and preparation method thereof
  • Hydrophilic membrane and preparation method thereof
  • Hydrophilic membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 30 parts of nano ethyl cellulose to 60 parts of 10% NaOH solution and stir well, then add 20 parts of butyl acrylate, 30 parts of toluene, and then add 0.5 parts of benzoyl peroxide, mix well and place at 80°C Under constant temperature reaction for 30min. After filtering, dry at 85° C. for 12 hours in a blast drying oven to break the resin into particles to obtain the desired modified nanofibers.

[0034] The preparation method of the water-absorbing fiber: mix 20 parts of modified nanofibers, 20 parts of polyethylene, and 15 parts of polypropylene evenly, and then solidify and form the required water-absorbing fibers through electrospinning at 280°C.

[0035] Preparation method of hydrophilic coating: add 20 parts of PVA to 30 parts of deionized water, then stir and dissolve completely at 70°C, cool to room temperature, add the solution to SK-1170, then add 1 part of montmorillonite, emulsify In half an hour, the desired hydrophilic coating is obtained.

[0036]...

Embodiment 2

[0038] Add 50 parts of nano ethyl cellulose to 80 parts of 10% NaOH solution and stir well, then add 30 parts of butyl acrylate, 30 parts of toluene, and then add 1 part of benzoyl peroxide, mix well and place at 80°C Under constant temperature reaction for 30min. After filtering, dry at 85° C. for 12 hours in a blast drying oven to break the resin into particles to obtain the desired modified nanofibers.

[0039] The preparation method of the water-absorbent fiber: 40 parts of modified nanofibers, 30 parts of polyethylene, and 25 parts of polypropylene are evenly mixed, and then the required water-absorbent fibers are obtained by curing and forming through electrospinning at 280°C.

[0040] Preparation method of hydrophilic coating: Add 25 parts of PVA to 30 parts of deionized water, then stir and dissolve completely at 70°C, cool to room temperature, add the solution to SK-1170, add 5 parts of montmorillonite, emulsify In half an hour, the desired hydrophilic coating is obt...

Embodiment 3

[0043] Add 40 parts of nano-ethyl cellulose to 100 parts of 10% NaOH solution and stir well, then add 25 parts of butyl acrylate, 30 parts of toluene, and then add 0.8 parts of benzoyl peroxide, mix well and place at 80°C Under constant temperature reaction for 30min. After filtering, dry at 85° C. for 12 hours in a blast drying oven to break the resin into particles to obtain the desired modified nanofibers.

[0044] The preparation method of water-absorbent fiber: mix 30 parts of modified nanofiber, 25 parts of polyethylene, and 20 parts of polypropylene evenly, and then solidify and form the required water-absorbent fiber through electrospinning process at 280°C.

[0045] Preparation method of hydrophilic coating: Add 30 parts of PVA to 30 parts of deionized water, then stir and dissolve completely at 70°C, cool to room temperature, add the solution to SK-1170, add 4 parts of montmorillonite, emulsify In half an hour, the desired hydrophilic coating is obtained.

[0046] ...

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Abstract

The invention discloses a hydrophilic membrane. The hydrophilic membrane is characterized by comprising water-absorbent fibers, a hydrophilic coating coated on the water-absorbent fiber and a releaselayer for protecting the hydrophilic coating, wherein the water-absorbent fibers comprise the following raw materials, by mass, of 20-40 parts of modified nanofibers, 20-30 parts of polyethylene and 15-25 parts of polypropylene; the modified nanofibers comprise the following raw materials, by mass, of 30-50 parts of nano ethyl cellulose, 60-100 parts of NaOH solutions, 20-30 parts of acrylic resin, 0.5-1 part of initiators and 30 parts of solvents; and the hydrophilic coating comprises the following raw materials, by mass, of 100 parts of acrylic copolymer, 30-50 parts of deionized water, 1-5parts of montmorillonite and 20-30 parts of polyvinyl alcohol. The invention also discloses a preparation method of the hydrophilic membrane. Compared with the prior art, the hydrophilic membrane is safe and healthy and has a good water absorption effect.

Description

technical field [0001] The invention relates to the technical field of water-absorbing materials, in particular to a hydrophilic membrane and a preparation method thereof. Background technique [0002] As we all know, at present, diapers, sanitary napkins, sanitary napkins and other hygiene products all use super absorbent resin (SAP) as absorbent. These substances can absorb several times their own mass of liquid, and on average each diaper can absorb 30 times its own mass of liquid, so they are widely used. [0003] For example, the patent application No. CN201710648872.2 (Notice No. CN109320660A) of the invention patent "A Production Process of Medicine and Superabsorbent Resin SAP" adopts the aqueous solution adiabatic polymerization method, uses deionized water as the flux, and partially neutralizes the acrylic acid with alkali, Add cured starch, cross-linking agent and composite initiator, carry out cross-linking polymerization at low temperature, and obtain SAP with ...

Claims

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Application Information

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IPC IPC(8): D06M15/263D06M15/333D06M11/79D01F8/02D01F8/06D06M101/06D06M101/20
CPCD01F8/02D01F8/06D06M15/263D06M15/333D06M11/79D06M2101/06D06M2101/20
Inventor 蒋磊虞竺君江健波
Owner NINGBO SOKEN CHEM
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