By Sarawut Rimdusit, Chanchira Jubsilp, Sunan Tiptipakorn
This e-book presents an creation to the original and engaging houses of alloys and composites from novel commercialized thermosetting resins in keeping with polybenzoxazines. Their awesome homes corresponding to processability, thermal, mechanical, electric houses in addition to ballistic effect homes of polybenzoxazine alloys and composites lead them to appealing for varied functions in digital packaging encapsulation, mild weight ballistic armour composites and bipolar plate in gas cells.
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Additional resources for Alloys and Composites of Polybenzoxazines: Properties and Applications
Reported that a monofunctional phenol–aniline type benzoxazine resin (Ph-a) as a reactive diluent for bifunctional benzoxazine resin showed possible effect on curing behaviors of the monomer mixtures in contrast to the effect observed using epoxy diluent. The curing peak temperature observed in the BA-a/Ph-a mixtures is systematically shifted to a slightly lower temperature with increasing the Ph-a diluent . Consequently, highly filled and high-performance polymer composites from benzoxazine-based polymers have been successfully developed and reported [8, 10, 12, 17, 18].
Thus, the obtained copolymer possesses high mechanical properties with excellent fire retardancy. Recently, there was an investigation on the effects of aromatic tetracarboxylic dianhydrides on the thermomechanical properties of poly(BA-a)-dianhydride copolymer . , pyromellitic dianhydride (PMDA), 3,3’,4,4’ biphenyltetracarboxylic dianhydride (s-BPDA), or 3,3’,4,4’ benzophenonetetracarboxylic BTDA. The authors discussed that the rendered copolymer of poly(BA-a) and three types of dianhydride 42 370 360 o Degradation temperature ( C) Fig.
Therefore, the lignin polymer could make network structure denser and the mobility of the backbone lower than the neat polybenzoxazine. Recently, Emranul Haque et al.  prepared and studied the polymer alloys of bisphenol-A-based polybenzoxazine and lignin by mixing two components and following with thermal curing. It was revealed that lignin accelerates the polymerization of benzoxazine. At the lignin content up to 2 wt%, the alloy is transparent. In case of higher content, the phase separation was observed.