Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material
A technology of potato starch and water-absorbing resin, which is applied in the field of preparing super-absorbent resin with high potassium content, can solve the problems of complex production process, low gel strength, and low water absorption multiple, and achieve the goal of simplifying the preparation process, good performance, and increasing income Effect
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Embodiment 1
[0024] Embodiment 1: Weigh 32.63g Potassium Hydroxide, measure 45.0ml deionized water, prepare Potassium Hydroxide Solution, under the condition of ice-water bath cooling, neutralize 60.0g (57.1ml) with Potassium Hydroxide Solution to remove barrier Polymerized acrylic. Weigh 5.0g carboxymethyl potato starch, measure 15.0ml deionized water, mix evenly under stirring, add 100mg potassium persulfate initiator, 0.5mg N, N'-methylenebisacrylamide and the prepared acrylic acid and Its potassium salt solution was stirred at room temperature for 0.5-1h to make it evenly mixed. Heating under stirring, controlling the heating rate, increasing the temperature of the water bath slowly, so that the graft copolymerization reaction is fully carried out, and stopping stirring when the graft copolymerization starts. Continue to raise the temperature gradually, and when it reaches the boiling water bath, continue heating to make it react within the temperature range for 1-2h, stop nitrogen fl...
Embodiment 2
[0025]Embodiment 2: Weigh 28.03g Potassium Hydroxide, measure 45.0ml deionized water, prepare Potassium Hydroxide Solution, under the condition of ice-water bath cooling, neutralize 60.0g (57.1ml) with Potassium Hydroxide Solution to remove barrier Polymerized acrylic. Weigh 5.0g carboxymethyl potato starch, measure 15.0ml deionized water, mix evenly under stirring, add 100mg potassium persulfate initiator, 0.5mg N, N'-methylenebisacrylamide and the prepared acrylic acid and Its potassium salt solution was stirred at room temperature for 0.5-1h to make it evenly mixed. Heating under stirring, controlling the heating rate, increasing the temperature of the water bath slowly, so that the graft copolymerization reaction is fully carried out, and stopping stirring when the graft copolymerization starts. Continue to raise the temperature gradually, and when it reaches the boiling water bath, continue heating to make it react within the temperature range for 1-2h, stop nitrogen flo...
Embodiment 3
[0026] Embodiment 3: Weigh 45.95g salt of wormwood, measure 45.0ml deionized water, prepare potassium carbonate solution, under the condition of ice-water bath cooling, neutralize 60.0g (57.1ml) with potassium carbonate solution and remove the acrylic acid of polymerization inhibitor . Weigh 5.0g carboxymethyl potato starch, measure 15.0ml deionized water, mix evenly under stirring, add 100mg potassium persulfate, 0.5mg N, N'-methylenebisacrylamide and the prepared acrylic acid and its potassium Salt solution, stirred at room temperature for 0.5-1h to make it evenly mixed. Heating under stirring, while controlling the heating rate, so that the temperature of the water bath rises slowly, so that the graft copolymerization reaction is fully carried out, and the stirring is stopped when the graft copolymerization starts. Afterwards, the temperature was gradually raised, and when it reached the boiling water bath, continue heating to make it react within the temperature range for...
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