| abstract |
The present invention provides a kind of preparation method for the hydroscopic high-molecular resin that anti acid alkali performance can be strong, and step is that neutralized reaction generation acrylic acid sylvite, adds acrylamide by acrylic acid and equivalent potassium carbonate；Crosslinking agent, buffer, pore-foaming agent is added after being completely dissolved to stir evenly；Sodium sulfite is added, stirs evenly, then adds crosslinking agent；Nitrogen blowing deoxygenation is to system oxygen content≤0.1mg/L under the conditions of 0 30 DEG C；Be cooled to 10 DEG C, add initiator, continue nitrogen blowing to tacky, when polymerization 2 is small after into polymer blob of viscose；Through extruder grain, dry, crush, sieve, become the product of different-grain diameter.The advantages that water-absorbing resin of the present invention is polymerize in buffer solution system, has anti acid alkali performance strong, and absorption speed is fast. |