A kind of superabsorbent resin and preparation method thereof

Abstract

The invention discloses a super absorbent polymer and a preparation method thereof. The preparation method comprises the following steps: (1) collecting scattered villous fine sisal fibers in a production process of a sisal product as a raw material; (2) adding water and 0.5%-3% of rosin into the raw material, and cooking at 60-90 DEG C for 30-120 minutes; and (3) draining the cooked raw material, and adding water, a hydrophilic monomer and an initiator to generate graft copolymerization, so as to finally obtain the super absorbent polymer with a color from light yellow to yellowish brown. The super absorbent polymer has relatively high water absorbent rate and comprehensive performance and good non-fresh-water absorption capacity, the degradation capacity is effectively improved, and meanwhile, the utilization rate of waste resources is increased.

Description

technical field The invention relates to the technical field of functional polymer resins, in particular to the technical field of superabsorbent resins graft-copolymerized with fluffy sisal fibers. Background technique Super absorbent resin is a new type of polymer material. Under ideal conditions, it can absorb water equivalent to hundreds to thousands of times its own mass, and has a strong water absorption capacity; and the absorbed water will not be released as easily as a sponge under a certain load (pressure), that is, it has Strong water retention capacity; can release and absorb water repeatedly. The application of superabsorbent resin in the prior art still has some obvious limitations, such as although its absorption capacity to distilled water, deionized water, purified water and tap water is very strong, but its absorption capacity to salt water and brine then plummets, especially for Liquids with a certain viscosity, such as blood and glue, have poorer absor...

AI Technical Summary

Problems solved by technology

Conventional sisal fibers are thick and have low reactivity and are not suitable for direct application as a skeleton material for superabsorbent resins, while sisal fibers after physical or chemical treatment in the prior art usually have cellulose molecular main chain breaks, As a result, the performance of superabsorbent resin prepared from it is poor, and it still lacks practical value under the high production cost