Reactive nanofluids for tuning resin hardness
Polyurea resins derived from tolyldiisocyante (TDI) and a reactive solvent-free nanofluid (NF-NH2) surface-decorated with propylamines can be tuned over three to five orders of magnitude in storage modulus (10 MPa to 10 GPa) and hardness modulus (6 kPa to 4 GPa) by varying weight fractions of components. The thermal properties of this NF-NH2 are similar to several other nanofluids reported using the same bulky anionic counterion that also imparts liquidity in the absence of any solvent. This tuning suggests applications ranging from opaque protective coatings to clearcoats to sealants to adhesives.
Link to Published Version
Texter, J., Qiu, Z., Byrom, J., & Crombez, R. (2019). Reactive nanofluids for tuning resin hardness. MRS Advances, 4(2), 125–131. https://doi.org/10.1557/adv.2018.678