| abstract |
The invention provides a super water-absorbing polymer, a preparation method and application thereof, and relates to the technical field of water-absorbing materials. The preparation method provided by the present invention comprises the following steps: mixing cross-linked polyvinyl pyrrolidone, neutralizing agent, acrylic acid, urea, cross-linking agent, initiator and water, and carrying out a graft copolymerization reaction to obtain a superabsorbent polymer. The surface morphology of the superabsorbent polymer prepared by the invention is rough and has grooves, which is beneficial to improve the salt resistance and water absorption performance of the polymer. The results of the examples show that the superabsorbent polymer prepared by the present invention can absorb tap water more than 250 times its own weight, deionized water nearly 1800 times and 0.9% sodium chloride solution more than 100 times, so it has good water absorption. and salt tolerance. |