Details

Autor(en) / Beteiligte

• Li, Weihang
• Lin, Zhiyong
• Zuo, Haiyan
• Zhong, Jiahui
• Xu, Yiting
• Zeng, Birong
• Luo, Weiang
• Chen, Guorong
• Yuan, Conghui
• Dai, Lizong

Titel

ZIF-8@Co-doped boronate ester polymer core-shell particles: Catalytically enhancing the nonflammability and smoke suppression of epoxy resin

Ist Teil von

• Polymer degradation and stability, 2022-04, Vol.198, p.109877, Article 109877

Ort / Verlag

London: Elsevier Ltd

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •A facile coating strategy was adopted to decorate ZIF-8 nanoparticles with a boronate ester polymer shell incorporated with Co2+.•Epoxy/ZIF-8@BP-Co nanocomposite exhibits flame retardancy and capability of catalytic carbonization, and smoke suppression.•The mechanical properties of the epoxy/ZIF-8@BP-Co nanocomposite were improved, because the BP-Co shell acts like a coupling agent between the polymer matrix and the flame retardant. Starting from a typical metal-organic framework (MOF) ZIF-8, a core-shell flame retardant named ZIF-8@BP-Co was synthesized by using ZIF-8 as the core and boronate ester polymer (BP) doped with Co2+ as the shell. The thermal stability and possible thermal degradation pathways of ZIF-8@BP-Co were characterized by TG and Py-GC/MS. ZIF-8@BP-Co was introduced into epoxy resin (EP) to reduce the flammability and smoke toxicity of EP nanocomposites. At the same time, the EP/ZIF-8@BP-Co achieved a V-0 rating in the UL-94 test, and its mechanical properties were also enhanced. Compared with EP, the peak heat release rate (pHRR), total heat release (THR), peak of smoke production rate (pSPR) and total smoke production (TSP) of EP/ZIF-8@BP-Co decrease by 51.3%, 13.2%, 37.2% and 20.9%, respectively. This work may be of interest in the design of multi-element flame retardant particles, especially in improving the compatibility between MOFs and polymer matrix. A core-shell structured ZIF-8@BP-Co endows epoxy resin with catalytic carbonization capability, smoke suppression, and flame retardancy. [Display omitted]