Traceless movable viscose glue, solidifiable precursor composition thereof, and preparation method thereof
A composition and precursor technology, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc., can solve the problems of only one-time use, residual, etc., to meet the needs of hanging weight, strong viscosity, Wide range of effects
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[0026] The preparation method for preparing the traceless removable viscose by above-mentioned curable precursor composition comprises the steps:
[0027] S1, vacuumize the first reaction component with a vacuum pump for 5min-60min; preferably, vacuumize with a vacuum pump for 15min-30min, the purpose of vacuumizing is to eliminate air bubbles and part of the moisture;
[0028] S2. Mix the second reaction component with the first reaction component after vacuuming; wherein, the mass ratio between the first reaction component and the second reaction component is required to be 100:5-48, preferably, The mass ratio between the first reaction component and the second reaction component is 100:15-35;
[0029] S3. Reaction curing is carried out under the condition of 40°C-95°C to obtain a traceless removable adhesive, and the curing time is 1min-60min; preferably, the reaction curing is carried out under the condition of 50°C-80°C, and the curing time is 5min-10min.
[0030] Wherei...
Embodiment 1
[0034] Take 500g of polyethertriol with a molecular weight of 6000, 250g of polyetherdiol with a molecular weight of 2000, and 250g of polyetherdiol with a molecular weight of 4000 for mixing, then add 2g of organic bismuth and 2g of organic zinc, and 10g of UV-resistant additives, 10g The antioxidant and 5g of defoamer, continue to mix to obtain the first reaction component, the first reaction component is added into the first airtight container of the rubber mixing instrument, and vacuumed for 20min with a vacuum pump; the content is 7% Add 200g of isocyanate solution into the second airtight container of the rubber mixing device, mix the first reaction component and the second reaction component through the rubber mixing device, and apply the mixed material to the substrate through the rubber mixing device On the above, the reaction curing was carried out at 70°C, and the adhesive was cured for 8 minutes to obtain a traceless removable adhesive.
[0035] Viscosity test: The...
Embodiment 2
[0037] Take 500 g of polyether triol with a molecular weight of 6000, 250 g of polyether diol with a molecular weight of 2000, and 250 g of polyether diol with a molecular weight of 4000 for mixing, then add 2 g of organic bismuth and 2 g of organic zinc, and continue mixing to obtain the first reaction component , add the first reaction component into the first airtight container of the rubber mixing instrument, and evacuate for 20 minutes with a vacuum pump; add 200 g of isocyanate solution with a content of 7% into the second airtight container of the rubber mixing instrument, and pass the Mix the first reaction component and the second reaction component, apply the mixture obtained after mixing on the substrate through a glue mixing device, and carry out reaction curing at 70°C, and cure for 8 minutes to obtain a traceless removable adhesive glue.
[0038] Viscosity test: The initial viscosity tester is used to test the viscosity of the product according to the national st...
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