Toughening Effect and Flame-Retardant Behaviors of Phosphaphenanthrene/Phenylsiloxane Bigroup Macromolecules in Epoxy Thermoset

By Y. Qiu, Lijun Qian, Haisheng Feng, Shanglin Jin, Jian-wei Hao. Macromolecules, 2018

177 citations recorded by the source corpus.

A series of novel phosphaphenanthrene/phenylsiloxane bigroup macromolecules (DDSi-n) were synthesized and applied to obtain high-performance epoxy thermosets. DDSi-n macromolecules simultaneously enhanced the anti-impact and flame-retardant performance of epoxy thermosets. The impact strength of the DDSi-n-containing thermoset (DDSi-n/EP) was maximally increased by nearly 140% in 8% DDSi-1/EP because of the flexible phenylsiloxane block and the polar phosphaphenanthrene group interacting with matrix in DDSi-n macromolecules. Meanwhile, the evidently elevated anti-ignition and self-extinguishing performance, the suppressed combustion heat, and the enhanced charring capability of DDSi-n/EP were all caused by the flame-retardant group synergistic effect of phosphaphenanthrene and phenylsiloxane groups of DDSi-n macromolecules in thermosets. Compared with the individual phosphaphenanthrene or phenylsiloxane group in monogroup contrasts, the phosphaphenanthrene and phenylsiloxane groups in bigroup DDSi-n macro...

Subfields: Polymers and Plastics, Safety, Risk, Reliability and Quality

View Paper: https://www.semanticscholar.org/paper/c0c9919fe5e199fd0a174b768fb68f106d1e384f

Citations in the corpus

• A novel phosphorus-containing semi-aromatic polyester toward flame retardancy and enhanced mechanical properties of epoxy resin (2020, unknown): “On the one hand, the strongly adhering PBHDDP to the EP network allowed improving energy dissipation during the fracture event, and the polar phosphaphenanthrene group further enhanced the interaction between PBHDDP and the matrix [55].”