In recent years, China has paid more and more attention to super absorbent polymer, and the topic of "synthesis method and performance improvement of SAP powder" has long become the focus of social attention. In order to promote the rapid development of its synthesis technology, we should pay attention to its synthesis efficiency and the improvement of its performance. This paper introduces the influence of synthetic conditions on the water absorption of the resin.

1.Influence of synthesis condition of super absorbent polymer on neutralization degree

As we all know, the influence of synthesis conditions of super absorbent polymer on the water absorption of resin is reflected in the change of neutralization degree of its solution. Its water absorption capacity is closely related to the water quality density of the solution, because the neutralization degree of the solution affects the water quality density of the solution. When the outside temperature is the same, the water absorption rate increases with the increase of the neutralization degree of the solution. When the neutralization degree of the solution decreases, the acidity in the solution will increase, resulting in an upward trend in the polymerization rate of acrylic acid in the solution. When the neutralization degree of the solution decreases, its polymerization capacity begins to decrease, resulting in a sharp decline in its water absorption. Similarly, when the neutralization degree of the solution increases, its polymerization capacity begins to increase, resulting in a sharp increase in its water absorption.

2.Influence of synthesis conditions of super absorbent polymer on acrylic acid concentration

As we all know, the influence of synthesis conditions of super absorbent polymer on the water absorption of resin is reflected in the change of acrylic acid concentration in its solution. Its water absorption capacity is closely related to the water quality density of the solution, because the concentration of acrylic acid in the solution affects the water quality density of the solution. When the external atmospheric pressure is the same, the water absorption rate increases with the increase of the concentration of acrylic acid in the solution. When the concentration of acrylic acid in the solution decreases, the alkalinity of the solution will increase, resulting in an upward trend in the polymerization rate of acrylic acid in the solution. When the concentration of acrylic acid in the solution decreases, its polymerization capacity begins to decrease, resulting in a sharp decline in its water absorption. Similarly, when the concentration of acrylic acid in its solution increases, its polymerization capacity begins to increase, resulting in a sharp increase in its water absorption.

3.Influence of synthesis conditions of super absorbent polymer on initiator dosage

As we all know, the influence of the synthesis conditions of super absorbent polymer on the water absorption of the resin is reflected in the change of the amount of its solution initiator. Its water absorption capacity is closely related to the water quality density of the solution, because the amount of solution initiator affects the water quality density of the solution. When the neutralization degree of the solution is the same, the water absorption rate increases with the increase of the amount of the solution initiator. When the amount of initiator in the solution becomes low, the activity of water molecules in the solution will become higher, resulting in an upward trend in the polymerization rate of acrylic acid in the solution. When the amount of initiator in the solution becomes low, its polymerization capacity begins to decrease, resulting in a sharp decline in its water absorption. Similarly, when the amount of initiator in its solution increases, its polymerization capacity begins to increase, resulting in a sharp increase in its water absorption.

Nowadays, the performance measurement of super absorbent polymer has been comprehensively analyzed and studied in terms of water absorption rate and water retention performance. It is concluded that the influence of SAP powder synthesis conditions on resin water absorption is mainly reflected in three aspects: neutralization degree, acrylic acid concentration and initiator consumption.