High-hydrolysis-resistant back-adhesion-resistant adhesive used for aluminum plastic composite tag and preparation of adhesive
An aluminum-plastic composite and adhesive technology, applied in adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve problems such as insufficient bonding strength, inability to store information, and slow curing speed, etc., to achieve Good moisture and heat aging resistance, high bond strength, and the effect of shortening the curing temperature
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Embodiment 1
[0032] This embodiment relates to a method for preparing an adhesive for an anti-adhesive aluminum-plastic composite label, comprising the following process steps:
[0033] (1) First put all the solvents, i.e. 49.99 kg of ethyl acetate, into the reaction kettle, and heat to about 40°C for stirring;
[0034] (2) Keep stirring and put 40 kilograms of side vinyl polyester polyols, 10 kilograms of modified epoxy resins, and 10 kilograms of hydroxyl acrylic resins into the reaction kettle in turn, and stir for about 1 hour;
[0035] (3) After being mixed uniformly, 0.01 kilogram of bismuth-zinc composite catalyst and 2 kilograms of chain extender (trimethylolpropane) are slowly dropped into the reactor;
[0036] (4) When all the solids are dissolved and mixed uniformly, measure the solid content and adjust to the theoretical value;
[0037] (5) Stir slowly for about 1 hour, cool, weigh and pack to obtain component A;
[0038] (6) Mix 2 g of azobisisobutyronitrile and 40 g of poly...
Embodiment 2
[0041] This embodiment relates to a preparation method of an anti-sticking aluminum-plastic composite label adhesive, comprising the following process steps:
[0042] (1) First put all the solvents, namely 39.95 kg of ethyl acetate and 10 kg of methyl ethyl ketone into the reaction kettle, and heat to about 50°C for stirring;
[0043] (2) Keep stirring and put 40 kilograms of side propylene-based polyester polyols, 10 kilograms of modified epoxy resins, and 10 kilograms of hydroxyl acrylic resins into the reaction kettle in turn, and stir for about 1 hour;
[0044] (3) After being mixed uniformly, 0.05 kg of bismuth-zinc composite catalyst and 1 kg of chain extender (triethanolamine) are slowly dropped into the reactor;
[0045] (4) When all the solids are dissolved and mixed uniformly, measure the solid content and adjust to the theoretical value;
[0046] (5) Stir slowly for about 1 hour, cool down, weigh and pack.
[0047] (6) Mix 2 g of azobisisobutyronitrile and 40 g of...
Embodiment 3
[0050] This embodiment relates to a preparation method of an anti-sticking aluminum-plastic composite label adhesive, comprising the following process steps:
[0051] (1) First put all the solvent, namely 47.97 kg of butyl acetate, into the reaction kettle, and heat it to about 50°C for stirring;
[0052] (2) Keep stirring and put 40 kilograms of side styrene-based polyester polyols, 10 kilograms of modified epoxy resins, and 20 kilograms of hydroxyl acrylic resins into the reaction kettle in turn, and stir for about 1 hour;
[0053] (3) 0.04 kg of bismuth-zinc composite catalyst and 3 kg of chain extender (dimethylthiotoluenediamine) are slowly dropped into the reactor after being mixed uniformly;
[0054] (4) When all the solids are dissolved and mixed uniformly, measure the solid content and adjust to the theoretical value;
[0055] (5) Stir slowly for about 1 hour, cool down, weigh and pack.
[0056] (6) Mix 2 g of azobisisobutyronitrile and 40 g of polyisocyanate curing...
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