Waterproof sizing starch preparation process
A technology for preparing and sizing starch, which is applied in the field of starch, can solve the problems of complex preparation process and poor hydrophobicity of modified starch, and achieve the effects of improving physical strength, improving paper surface smoothness, and reducing the number of broken ends
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Embodiment 1
[0033] A, add 900kg cornstarch and 3kg aluminum sulfate in reactor, control reactor temperature 30 ℃;
[0034] B, under 30r / min stirring condition, add acrylamide aqueous solution (formed by mixing 3kg acrylamide and 10kg water) and the ammonium persulfate aqueous solution (the consumption of ammonium persulfate is 2kg) that concentration is 15% in the reactor, stir React for 10 minutes;
[0035] C, add 1kg ammonium stearate and 1kg ferrous sulfate in reactor, react 20min;
[0036] D, add 0.1kg boric acid in reactor, react 5min, preferably, boric acid is opened with warm water earlier;
[0037] E. Rapid cooling, the temperature drops below 40°C and the material is discharged to obtain waterproof sizing starch.
Embodiment 2
[0039] A, add 930kg tapioca starch and 4kg aluminum sulfate in reactor, control reactor temperature 35 ℃;
[0040] B, under 40r / min stirring condition, add acrylamide aqueous solution (formed by mixing 5kg acrylamide and 10kg water) and the ammonium persulfate aqueous solution (the consumption of ammonium persulfate is 4kg) that concentration is 20% in the reactor, stir React for 12 minutes;
[0041] C, add 2kg ammonium stearate and 2kg ferrous sulfate in reactor, react 25min;
[0042] D, add 0.3kg boric acid in reactor, react 7min, preferably, boric acid is opened with warm water earlier;
[0043] E. Rapid cooling, the temperature drops below 35°C and the material is discharged to obtain waterproof sizing starch.
Embodiment 3
[0045] A, add 950 cornstarch and 5kg aluminum sulfate in reactor, control reactor temperature 40 ℃;
[0046] B, under 40r / min stirring condition, add acrylamide aqueous solution (formed by mixing 8kg acrylamide and 20kg water) and the ammonium persulfate aqueous solution (the consumption of ammonium persulfate is 6kg) that concentration is 23% in the reactor, stir Reaction 13min;
[0047] C, add 3kg ammonium stearate and 1.5kg ferrous sulfate in reactor, react 27min;
[0048] D, add 0.6kg boric acid in reactor, react 9min, preferably, boric acid melts with warm water earlier;
[0049] E. Quickly cool down, the temperature drops below 32°C, and the material is discharged to obtain waterproof sizing starch.
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