N -Epoxypropyl poly( p -phenylene terephthalamide) covalently and non-covalently coated multi-walled carbon nanotubes for PVC reinforcement

Allyl and Benzyl Modified Aramid Nanofibers as an Enhancement in Polystyrene-Based Composites

“…Similar morphological changes of ANFs have been observed in the studies of chemically modified multi-wall carbon nanotubes (MWCNTS). When different concentrations of epichlorohydrin were used to functionalize ANFs, with the increase of the degree of modification, ANFs was finally transformed into nano-spherical structure (Pan et al, 2017 ).…”

Cu (II) coordination modification of aramid fiber and effect on interfacial adhesion of composites

“…The obtained fiber was soaked in different concentrations (1,5,9,15,20, and 25 g L À1 ) of PEI solution at room temperature for 6 h and then washed in a Soxhlet extractor overnight in order to remove excess PEI from the fiber surface. Then, the fiber was washed with water and ethanol, then dried at 110 C.…”

“…The chemical treatments introduce reactive groups onto the aramid fiber surface through a chemical bond to improve the bond strength. The most widely used chemical treatments include surface etching, 8 grafting, 9 and copolymerization. 10 The physical modification methods form free radical reactive centers on the fiber surface.…”

Preparation of aramid-based epoxy resin from low-grade aramid

“…Therefore, it is necessary to modify aramid in preparing functional aramid ber by physical methods such as coating, 16,17 plasma, 18,19 highenergy rays, 20,21 supercritical uid method, 22 or by chemical methods including copolymerization, 23,24 surface etching, 25 or surface graing. [26][27][28][29] A certain amount of aramid ber is labeled as low-grade in the process of polymerization when the molecular weights of the aramid polymers fail to meet the spinning requirements, which was inuenced by various factors such as raw materials, equipment, or operation technologies. It is oen discharged directly as solid wastes owing to its non-utility.…”