When choosing absorbent resin small packaging, the following performance indicators need to be considered:
1、 Water absorption performance
Water absorption rate: refers to the ratio of the mass of water absorbed by a water absorbing resin to its own mass. It is a key indicator for measuring the water absorption capacity of a water absorbing resin, and generally requires a high water absorption rate to meet the demand for rapid absorption of large amounts of water.
Water absorption rate: refers to the speed at which water absorbing resin absorbs water after coming into contact with water. For some application scenarios that require rapid liquid absorption, such as wound dressings, diapers, etc., water absorbing resin is required to have a fast water absorption rate.
2、 Maintain strength and stability
Retention force: refers to whether the absorbent resin can maintain its shape and structural stability after absorbing water, ensuring that it will not leak water or cause structural damage due to external forces during use.
Stability: It is related to whether the water absorbing resin will degrade, fail, or weaken its water absorption performance during long-term use, affecting the reliability and service life of the product.
3、 Scope of application and environmental stability
Scope of application: Different types of water absorbing resins may exhibit different properties under different environmental conditions. It is necessary to select water absorbing resins with corresponding scope of application based on specific application scenarios, such as temperature, humidity, acidity, etc.
Environmental stability: refers to whether the water absorbent resin can maintain stable performance under different environmental conditions such as temperature, humidity, and light, ensuring that it can function normally in various usage environments.
4、 Eco friendly and sustainable
Environmental friendliness: High quality water absorbent resins should be environmentally friendly, non-toxic, and biodegradable to reduce their impact on the environment and meet environmental requirements.
Sustainability: possessing sustainable production and usage characteristics, such as using renewable resources as raw materials and reducing pollution emissions during the production process.
5、 Other performance indicators
Particle size and shape: Smaller particles usually have a larger specific surface area and can absorb moisture faster, but they may also affect the processing and performance of the product, and need to be selected according to specific applications.
Chemical stability: In some special application scenarios, such as medical products that come into contact with drugs, water absorbing resins are required to have good chemical stability and not undergo chemical reactions with drugs.
Mechanical properties: such as strength, toughness, etc. For some application scenarios that require certain external forces, such as in building materials, the mechanical properties of water absorbing resins need to be considered.