Silicone Pressure-Sensitive Adhesives Modified with Halloysite of Increased Thermal Resistance

The objective of this study was to produce single-sided tapes with varying ccentrations of halloisyte and assess their impact on the self-adhesive properties of commercial adhesives. Key self-adhesive properties, including tack, peel adhesion, shear strength, shrinkage, and thermal resistance, were thoroughly examined. The silicone-based PSA tapes with halloysite additives hold potential applications in heavy industries for joining components operating under high temperatures, as well as in aerospace for bonding solar cells on satellites and space stations. Although there are limited reports on one-sided adhesive tapes incorporating silicones and halloysite, considering their wide range of potential uses, we conducted self-adhesive tests to elucidate the influence of halloysite on these properties. Additionally, we investigated the reactivity between the crosslinking compound and silicone adhesive during the crosslinking process, along with the thermal effects associated with this process. Given the diverse applications of the resulting tapes, we also conducted flammability and heat of combustion tests in accordance with relevant standards. As a result of these tests, we successfully developed one-sided self-adhesive tapes with enhanced properties, such as improved temperature resistance, reduced shrinkage, and increased resistance to flammability.