腈纶废丝水解法制备高吸水性树脂(I) - Names and Identifiers
腈纶废丝水解法制备高吸水性树脂(I) - Introduction
Preparation of super absorbent resin by hydrolysis of acrylic waste yarn (I) is a kind of super absorbent polymer prepared by hydrolysis reaction using acrylic waste yarn as raw material. The following is a description of the nature, use, preparation and safety information of the resin:
Nature:
1. High water absorption: the resin has good water absorption performance, can absorb its own quality dozens of times or even hundreds of times the water.
2. Stability: At room temperature, the resin is relatively stable, not easy to decompose or the decomposition rate is slow.
3. Extensibility: The resin has a certain degree of ductility and can expand and maintain its shape after absorbing water.
Use:
1. Production of sanitary products: Super absorbent resin can be used in the manufacture of sanitary napkins, diapers and other products to provide excellent water absorption performance, keep the surface dry and improve comfort.
2. Agriculture: The resin can be used as a soil moisture retention agent to help extend the growth cycle of plants and alleviate drought problems.
3. Cosmetics: high water absorbent resin can be used to mix cosmetics, improve the texture and extensibility of the product.
Preparation Method:
1. Pretreatment: First of all, the acrylic waste silk needs to be pretreated to remove impurities and decolorize.
2. Hydrolysis reaction: the pretreated acrylic waste yarn is placed in an aqueous solution containing an alkaline medium such as sodium hydroxide for hydrolysis reaction. During the reaction, the acrylic fibers are hydrolyzed to the corresponding acids and amines.
3. Polymerization: A crosslinking agent, etc., is added to the acid and amine solution obtained by hydrolysis to carry out a polymerization reaction. After the polymerization reaction, a highly absorbent resin is formed.
4. Filtration, washing and drying: The obtained resin is subjected to filtration, washing and other treatments, and finally dried to obtain a highly absorbent resin.
Safety Information:
in the use of acrylic waste hydrolysis method to prepare high water absorbent resin should pay attention to the following safety matters:
1. Operators should wear protective equipment, such as gloves, glasses, etc., to avoid direct contact with chemicals.
2. During the operation, it is necessary to maintain a well-ventilated laboratory environment to avoid the volatilization of chemical substances causing harm to the human body.
3. Comply with the safety operation procedures of the laboratory and pay attention to the correct methods and precautions for using chemicals.
4. Properly dispose of waste and residual liquid and comply with relevant laws and regulations on environmental protection.
Last Update:2024-04-09 15:17:44