Crosslinking control of hydrophobic benzoxazine-based hybrid sol-gel coating for corrosion protection on aluminum alloys

Superhydrophobic Bud Protrusion-Polypropylene Fiber Membrane with Ultrahigh Flux for Oil–Water Separation

“…283.8 eV (C–Si) (Figure c), 291.3 eV (−CF 2 ), and 293.6 eV (−CF 3 ) correspond to the TPFOS covering the surface of the membrane. The peak at 103.2 eV (Figure c) is characterized as a Si–O bond, and the peak at 532.4 eV (Figure d) is characterized as a Si–O–C bond . Both correspond to the hydrolysis of TPFOS and the reaction of TPFOS with the membranous extension formed by HDI and COS.…”

“…The peak at 103.2 eV (Figure 3c) is characterized as a Si−O bond, 40 and the peak at 532.4 eV (Figure 3d) is characterized as a Si−O−C bond. 41 Both correspond to the hydrolysis of TPFOS and the reaction of TPFOS with the membranous extension formed by HDI and COS. The only intense peak at 689.2 eV in the XPS spectrum of F 1s indicates the covalent bonded fluorine with carbon.…”

Facile and eco-friendly synthesis of hydrogen bonding-rich bio-based bisbenzoxazine resins with low surface free energy, strong adhesion strength and high thermal stability

“…15 In addition, their derived polybenzoxazines generally show high glass transition temperature (T g ), 16,17 excellent electrical properties, 18,19 and hydrophobicity. 20,21 In particular, the most appealing aspect of benzoxazine resins is that they can be easily synthesized from three different starting ingredients, i.e., phenol, primary amine, and formaldehyde, by means of the Mannich condensation. Therefore, such unique molecular characteristics provide a very versatile structural design capability for benzoxazine resins.…”

Kinetic Modeling of Ring-Opening Polymerization of Benzoxazines Using MIL-53-Al as a Potent Catalyst

“…PBzs have recently gained considerable interest because of their outstanding potential of exhibiting the excellent properties of traditional phenolic resins, which make them attractive alternatives to a wide range of end-use applications. Aerospace and naval composites, − automotive frames and components, , composite pipes for gas or oil, , circuit boards, , aerogels, , self-healing materials, − coatings and corrosion protection, − and paints , are among these end-use applications. PBzs possess highly attractive features such as high glass transition temperature ( T g ), , low water absorption, near zero shrinkage upon polymerization, , high char yield, , fast evolution of mechanical properties with the conversion, , similar and even lower costs than epoxy and bismaleimides resins, and excellent dielectric properties. , These outstanding properties and intrinsically rich molecular design flexibility allowing good compatibility with other structures have rendered PBz an important contender to epoxy and traditional phenolic resins in the composite industry.…”