Water-locking sponge as well as preparation method and application thereof

A water sponge and sponge technology, applied in the field of porous materials, can solve the problems of lack of prevention of bacterial growth, skin regeneration, secondary injury of wound surface, increase wound stimulation, etc., achieving strong adjustability, high universality, and improved water retention. rate effect

Inactive Publication Date: 2018-11-13
SHANGHAI GEL KING INSULATION PROD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the superabsorbent dressing is prone to wound stickiness during use, which may cause secondary damage to the wound surface when it is removed or replaced
In addition, it lacks the ability to prevent bacterial growth, promote wound healing, and promote skin regeneration
In addition, the entire medical dressing needs to be replaced frequently, which increases the irritation to the wound and increases the pain of the patient

Method used

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  • Water-locking sponge as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A water-locking sponge, including a polyester sponge and a 30-mesh sodium polyacrylate water-absorbing resin filled in the pores of the sponge in granular form, and the apparent density of the water-absorbing resin in the water-locking sponge is 5kg / m 3 .

[0030] Its preparation method is as follows:

[0031] (1) mixing the foaming resin and the foaming aid to obtain a foaming mixture;

[0032] (2) Dispersing the dried water-absorbing resin with a particle size of 30 meshes in the foaming mixture obtained in step (1), the water-absorbing resin accounting for 20 wt% of the foaming mixture obtained in step (1);

[0033] (3) Foaming the mixture obtained in step (2) to obtain a water-locking sponge.

Embodiment 2

[0035] A water-locking sponge, comprising a polyester sponge and 200-mesh polyacrylamide and 170-mesh sodium polyacrylate water-absorbing resin (mass ratio 1:1) filled in the pores of the sponge in granular form, and the water-absorbing resin in the water-locking sponge The apparent density is 30g / m 3 .

[0036] Its preparation method is as follows:

[0037] (1) mixing the foaming resin and the foaming aid to obtain a foaming mixture;

[0038] (2) Dispersing the dried water-absorbing resin with a particle size of 200 mesh in the foaming mixture obtained in step (1), the water-absorbing resin accounting for 60 wt% of the foaming mixture obtained in step (1);

[0039] (3) Foaming the mixture obtained in step (2) to obtain a water-locking sponge.

Embodiment 3

[0041]A water-locking sponge, comprising a polyether sponge and a 140-mesh polyoxyethylene water-absorbing resin filled in the internal pores of the sponge in granular form, and the apparent density of the water-absorbing resin in the water-locking sponge is 15g / m 3 .

[0042] Its preparation method is as follows:

[0043] (1) mixing the foaming resin and the foaming aid to obtain a foaming mixture;

[0044] (2) Dispersing the dried water-absorbing resin with a particle size of 100 mesh in the foaming mixture obtained in step (1), the water-absorbing resin accounting for 40 wt% of the foaming mixture obtained in step (1);

[0045] (3) Foaming the mixture obtained in step (2) to obtain a water-locking sponge.

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Abstract

The invention relates to a water-locking sponge as well as a preparation method and application thereof. The water-locking sponge comprises sponge and a water-absorbing resin filled in a foam skeletonof the sponge. The preparation method comprises the following steps: (1) mixing foaming resin and a foaming assistant to obtain a foaming mixture; (2) dispersing dry water-absorbent resin in the foaming mixture obtained in step (1); and (3) foaming the mixture obtained in step (2) to obtain the water-locking sponge. The water-locking sponge provided by the invention integrates the advantages of sponge and water-absorbing resin, achieves the effect that one plus one is greater than two, obtains a composite water-locking sponge with a high water-locking rate, and has strong extrusion resistance. The preparation method of the water-locking sponge has strong operability, strong adjustability and high universality.

Description

technical field [0001] The invention relates to the technical field of porous materials, in particular to a water-locking sponge and its preparation method and application. Background technique [0002] Sponge is a porous material with good water absorption and can be used for cleaning items. It is widely used in various fields. The original color of the sponge is off-white. It will turn yellow due to the oxidation reaction with oxygen in the future. It will be dyed when bleaching is required, the texture is soft, the temperature resistance is only 200°C, and it is flammable. It is a plastic product produced by cross-linking reaction with polyurethane plus TDI or MDI. According to the size of the internal bubbles, it can have different densities. It can be made into various shapes with molded foam according to the needs. It is widely used in various industries, mainly used for shockproof, heat preservation, material filling, children's toys, etc. . [0003] After the tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/00C08L67/00C08L33/02C08L33/26C08L71/02C08J9/00
CPCC08J9/0061C08J2367/00C08J2371/00C08J2433/02C08J2433/26C08J2471/02
Inventor 顾磊
Owner SHANGHAI GEL KING INSULATION PROD
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