Zeolitic imidazole framework-8 (ZIF-8) can serve both as a functional filler and a curing agent in the preparation of epoxy nanocomposites. ZIF-8 nanoparticles having a uniform size of 50 nm were prepared and found well dispersed in the epoxy matrix without a need of additional surface modification or surfactant. The imidazole group on the surface of the ZIF-8 initiates epoxy curing and form covalent bonds between ZIF-8 nanocrystals and epoxy matrix. This strong interfacial bonding helps to increase Young’s modulus of the epoxy matrix. Furthermore, because of the intrinsically porous and hydrophobic nature of ZIF-8, the epoxy/ZIF-8 nanocomposites exhibit noticeable reduction in dielectric constant and moisture uptake, which makes them an excellent candidate as low-k dielectric material. The present study offers a new perspective on the design and utilization of MOFs as an attractive polymer modifier in the fabrication of high-performance multifunctional organic−inorganic nanocomposites for wide arrays of engineering applications.

Epoxy/zeolitic imidazole framework-8 nanocomposites for low-k dielectrics

256th National Meeting (2018)

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