Starch adhesive
A starch adhesive, starch technology, applied in the direction of starch adhesives, adhesives, adhesive additives, etc., can solve the problems of starch adhesives such as poor water resistance, slow natural drying rate, short storage period, etc., and achieve stable water resistance , Easy control of operating conditions, long storage period
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Embodiment 1
[0015] A kind of starch adhesive, the steps are as follows:
[0016] 1) Add 20kg of deionized water, 2.1kg of polyvinyl alcohol and 0.02kg of n-octanol into a reactor with a stirrer, raise the temperature to 88-92°C, and keep the temperature for 30 minutes to dissolve all the polyvinyl alcohol;
[0017] 2) Cool down to 52-57°C, add 30kg of starch, 0.1kg of copper sulfate, 0.01kg of manganese acetylacetonate, stir evenly, add 8.5kg of sulfur peroxide, and react for 60-80min under constant stirring;
[0018] 3) Add 8kg of sodium hydroxide (30% solution), adjust the pH value to 9-10, add 1.1kg of melamine, and react for 60-80min;
[0019] 4) Add 0.25kg sodium thiosulfate (30%) solution, stir evenly, add 78kg deionized water, stir for 30-40min, make the solution translucent, then add 0.5kg polyacrylonitrile, 0.8kg diisocyanate, Reaction 40-60min;
[0020] 5) Add 0.9kg of potassium sorbate and 1.1kg of kaolin, and stir for 30-40 minutes to obtain the product.
Embodiment 2
[0022] A kind of starch adhesive, the steps are as follows:
[0023] 1) Add 22kg of deionized water, 2.3kg of polyvinyl alcohol and 0.02kg of n-octanol into a reaction kettle with a stirrer, raise the temperature to 88-92°C, and keep the temperature for 30 minutes to completely dissolve the polyvinyl alcohol;
[0024] 2) Cool down to 52-57°C, add 30kg of starch, 0.11kg of copper sulfate, 0.01kg of manganese acetylacetonate, stir evenly, add 9.2kg of sulfur peroxide, and react for 60-80min under constant stirring;
[0025] 3) Add 9kg of sodium hydroxide (30% solution), adjust the pH value to 9-10, add 1.8kg of melamine, and react for 60-80min;
[0026] 4) Add 0.31kg sodium thiosulfate (30%) solution, stir evenly, add 90kg deionized water, stir for 30-40min, make the solution translucent, then add 0.7kg polyacrylonitrile, 1.0kg diisocyanate, Reaction 40-60min;
[0027] 5) Add 1.1kg potassium sorbate and 1.3kg kaolin, and stir for 30-40min to obtain the product.
Embodiment 3
[0029] A kind of starch adhesive, the steps are as follows:
[0030] 1) Add 27kg of deionized water, 2.5kg of polyvinyl alcohol and 0.02kg of n-octanol into a reaction kettle with a stirrer, raise the temperature to 88-92°C, and keep the temperature for 30 minutes to completely dissolve the polyvinyl alcohol;
[0031] 2) Cool down to 52-57°C, add 30kg of starch, 0.11kg of copper sulfate, 0.01kg of manganese acetylacetonate, stir evenly, add 10.3kg of sulfur peroxide, and react for 60-80min under constant stirring;
[0032] 3) Add 10kg of sodium hydroxide (30% solution), adjust the pH value to 9-10, add 2.5kg of melamine, and react for 60-80min;
[0033] 4) Add 0.37kg sodium thiosulfate (30%) solution, stir evenly, add 108kg deionized water, stir for 30-40min, make the solution translucent, then add 0.9kg polyacrylonitrile, 1.2kg diisocyanate, Reaction 40-60min;
[0034] 5) Add 1.3kg of potassium sorbate and 1.5kg of kaolin, and stir for 30-40 minutes to obtain the product. ...
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