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创建于05.15
The application scope of Super Absorbent Polymer (SAP)
Super Absorbent Polymer (SAP) is a functional polymer material that can absorb and retain hundreds or even thousands of times its own weight in water and is widely used in multiple fields. The following are its main application scopes:
1.Personal hygiene products
Baby diapers/pull-up pants: SAP is the core material, used to quickly absorb and lock in urine, keeping the skin dry.
Adult incontinence products: Provide aspiration protection for patients with mobility issues or incontinence.
Female sanitary napkins/pads: Efficiently absorb menstrual blood and enhance comfort.
2.Medical field
Medical dressings: Used for wound exudate management and promoting healing (such as hydrogel dressings).
Surgical pad/isolation pad: Absorb intraoperative body fluids and maintain a sterile environment.
Drug sustained release: As a carrier, it controls the rate of drug release.
3.Agriculture and Horticulture
Soil water-retaining agent
Planting in arid areas: SAP mixed soil can reduce the frequency of irrigation (slowly release rainwater or irrigation water after absorbing it).
Seed coating: Increases germination rate.
Soilless cultivation: As a water-retaining substrate, it is used for potting, seedling raising, etc.
4.Industry and Construction
Waterproof materials: Used for waterproof sealing of cables, pipes, etc.
Concrete curing: Add SAP to reduce concrete cracks (slow release of internal moisture).
Wastewater treatment: Adsorb heavy metal ions or organic pollutants (modified SAP is required).
5.Food packaging
Fresh food preservation: Absorb condensate water in the packaging to extend the shelf life of fruits and vegetables.
Cold chain transportation: As a carrier of cold insulation agent, it regulates humidity.
6.Other emerging applications
Fire-fighting materials: Making flame-retardant gel or fire barriers.
Toys/creative products: such as the "Water Spirit" swelling toy (safety should be noted).
Desert greening: Co-planting with plants to improve the water-holding capacity of sandy soil.
7.Precautions
Biocompatibility: Medical/hygiene products should use non-toxic and low-irritation SAP (such as sodium polyacrylate).
Degradability: Traditional SAP is difficult to degrade. In the environmental protection field, starch-based or cellulose-based degradable SAP is preferred.
Performance customization: Through chemical modification, the liquid absorption rate, salt resistance, etc. can be adjusted to adapt to different scenarios.
The application of SAP continues to expand, especially in the fields of environmental protection and high-end medical care, where research is becoming increasingly in-depth. In the future, it may cover more innovative scenarios
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