Degradable pressure-sensitive adhesive and preparation method thereof
A pressure-sensitive adhesive, completely dissolving technology, applied in the direction of adhesive types, non-polymer adhesive additives, unsaturated alcohol copolymer adhesives, etc., can solve problems such as non-degradability, environmental pollution, etc., and achieve low cost , maintain the viscosity, the effect of simple preparation process
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Embodiment 1
[0017] Add 100 parts of polyvinyl alcohol resin, 40 parts of 2-ethylbenzofuran, and 5 parts of stearic acid into 200 parts of acetone to dissolve completely, then add 18 parts of glycerin, 12 parts of magnesium oxide and 20 parts of filler, and mix well Prepare a viscous adhesive. The 90-day degradation rate is 79% based on the amount of carbon dioxide released.
Embodiment 2
[0019] Add 140 parts of polyvinyl alcohol resin, 60 parts of 2-ethylbenzofuran, and 8 parts of stearic acid into 400 parts of acetone to dissolve completely, then add 16 parts of glycerin, 18 parts of magnesium oxide and 30 parts of filler, and mix well Prepare a viscous adhesive. The 90-day degradation rate is calculated as 80% based on the amount of carbon dioxide released.
Embodiment 3
[0021] Add 120 parts of polyvinyl alcohol resin, 30 parts of 2-ethylbenzofuran, and 6 parts of stearic acid into 300 parts of acetone to dissolve completely, then add 20 parts of glycerin, 16 parts of magnesium oxide and 25 parts of filler, and mix well Prepare a viscous adhesive. The 90-day degradation rate is calculated as 80% based on the amount of carbon dioxide released.
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