Comparison between thermal crosslinkers based on melamine-formaldehyde and benzoguanamine resin and their influence on main performance of acrylic pressure-sensitive adhesives as tack,peel adhesion,shear strength and pot-life |
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| Affiliation: | 1. Institute of Chemical Organic Technology, West Pomeranian University of Technology, Pułaskiego 10, 70-322 Szczecin, Poland;2. UTP University of Science and Technology, Faculty of Chemical Technology and Engineering, Seminaryjna 3, 85-326 Bydgoszcz, Poland;1. Polymer Reaction Engineering Group, INTEC (Universidad Nacional del Litoral-CONICET), Güemes 3450, Santa Fe 3000, Argentina;2. Oleochemistry and Catalysis Group, INTEC (Universidad Nacional del Litoral-CONICET), Güemes 3450, Santa Fe 3000, Argentina;3. Facultad de Ingeniería Química (Universidad Nacional del Litoral), Santiago del Estero 2829, Santa Fe 3000, Argentina;4. Physics of Surfaces and Interfaces Laboratory, IFIS Litoral (Universidad Nacional del Litoral-CONICET), Güemes 3450, Santa Fe 3000, Argentina;5. Organic Chemistry Group, INTEC (Universidad Nacional del Litoral-CONICET), Güemes 3450, Santa Fe 3000, Argentina |
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| Abstract: | An acrylic pressure-sensitive adhesive (PSA) was synthesized in ethyl acetate at about 80 °C by the use of 2-ethylhexyl acrylate, ethyl acrylate, methyl acrylate and acrylic acid at presence of thermal radical initiator AIBN. The synthesized acrylic PSA was crosslinked at relatively low temperatures at about 110–125 °C using thermal crosslinkers selected from melamine-formaldehyde resins and benzoguanamine resins. The crosslinking process runs between carboxylic groups of acrylic PSA and reactive groups from investigated amine resins. The choice of suitable thermal reactive crosslinkers has significant and relevant influence at presence of organic acid catalysts on main performance of crosslinked PSA such as tack, peel adhesion and shear strength. |
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| Keywords: | Thermal reactive melamine and benzoguanamine resins Acid catalyst Crosslinking agents Acrylic PSA Tack Peel adhesion Shear strength Pot-life |
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