APTES modification of ZIF-67@M(OH)(OCH3) for enhanced flame retardancy and mechanical properties of epoxy resins

Dong, Xiang; Li, De-long; Xie, Le; Fan, Xiangguang; Feng, Yu-xin

doi:10.1007/s10965-024-03879-8

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…With the increase of temperature, the infrared spectral signals of both samples show a trend of initially increasing and then decreasing, consistent with the thermal degradation process. For EP/DOPO-AS@M 5%, a weak signal of Si-O-M appears at 1020 cm − 1 , which serves as evidence of surface coupling between APTES and M (OH) (OCH 3 ) [40]. Figure 8(e) presents the Gram-Schmidt curves of EP and EP/DOPO-AS@M 5%.…”

Section: Gaseous Phase Analysismentioning

confidence: 97%

A novel organic-inorganic nanohybrid, DOPO-AS@M (OH)(OCH3) (M = Co, Ni), enhances the flame retardancy and mechanical properties of epoxy resin

Duan,

Dong,

Sun

et al. 2024

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In this work, we synthesized a novel organic-inorganic hybrid, DOPO-AS@M(OH)(OCH3) (DOPO-AS@M (M = Co,Ni)), and utilized it to prepare the epoxy resin (EP) composite with enhanced flame retardancy and mechanical properties. Specifically, the DOPO-AS was synthesized using 3-aminopropyltriethoxysilane (APTES), salicylaldehyde (Salal), and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). Subsequently, the DOPO-AS was utilized as a surface modification of the novel 2D nanosheet M(OH)(OCH3) and the obtained organic-inorganic hybrid was used to prepare the EP composites. The results showed that the addition of only 5 wt% DOPO-AS@M enabled EP to achieve the UL-94 of V-1 rating, with the limiting oxygen index (LOI) increasing from 28.7–31.0%. The peak heat release rate (pHRR) of EP/DOPO-AS@M 5% was 1007.5 kW/m2, with the reduction of 48% compared to pure EP. In addition, the elongation at break of EP/DOPO-AS@M 5% increased from 3.9–4.2%. The DOPO-AS@M nanohybrid proposed in this study providing the new solution for simultaneously enhanced the flame retardancy and mechanical properties of EP, thus broadening the application of EP in the market.

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Section: Gaseous Phase Analysismentioning

confidence: 97%