Effect of different ionic layered compounds decorated with zinc hydroxystannate on flame retardancy and smoke performance of epoxy resin

Abstract

ZHS@ Mg‐Al‐LDH and ZHS@α‐ZrP hybrid materials were prepared by electrostatically loading zinc hydroxystannate (ZHS) on the layered compounds (Mg‐Al‐LDH and α‐ZrP) in this work. With the addition of 2 wt% of the two hybrid materials to epoxy resin (EP), respectively, the fire hazard of EP and its composites were investigated. The limiting oxygen index (LOI) of ZHS@ Mg‐Al‐LDH/EP composite increased by 19.0% compared with pure EP, while its peak heat release rate (PHRR), total heat release rate (THR), and peak smoke release rate (SPR) decreased by 48.2%, 20.8%, and 21.6%, respectively, evidenced by the results of the LOI test and cone calorimetry test (CCT). The LOI of ZHS@α‐ZrP/EP composite increased by 20.4%, and its PHRR, THR, and SPR decreased by 47.7%, 21.4%, and 27.1%, respectively. Both hybrid materials showed prominent flame retardant and smoke suppressing properties. In addition, through the analysis of the TG‐IR and Raman spectrum of residual char, the specific mechanism of flame retardance and smoke suppression was explored.

Preparation of Zirconium Phosphate Nanomaterials and Their Applications as Inorganic Supports for the Oxygen Evolution Reaction

“…Ion-exchange in ZrP occurs at the Brönsted acid groups (P-OH) which are also present at the surface of the nanoparticles, opening another pathway for the modification of this material: surface modification [ 9 , 10 , 11 ]. These composite materials have been used for several applications including photocatalysis [ 12 , 13 ], drug delivery [ 14 , 15 , 16 , 17 ], amperometric biosensors [ 18 , 19 , 20 ], catalysis [ 7 , 21 , 22 , 23 , 24 , 25 , 26 ], flame retardancy [ 27 , 28 , 29 ], and others. We encourage the reader to also see other recent reviews on the topic of the synthesis of ZrP and its applications [ 7 , 8 , 30 , 31 ].…”

Recent Advances in Zinc Hydroxystannate-Based Flame Retardant Polymer Blends

“…In addition, the decomposition of hydroxyl groups in the ZHS and NCH, as well as the release of water and anions from the NCH interlayer, diluted the flammable volatiles in the flame zone and also acted as a flame retardant in the gas phase. To enhance the flame retardant and smoke suppressive properties of EP, ZHS@Mg-Al-LDH and ZHS@α-ZrP were prepared by co-precipitation method through electrostatic interaction, which was added into EP [ 64 ]. The LOI of ZHS@Mg-Al-LDH/EP and ZHS@α-ZrP/EP presented an enhancement of 25.7% and 26.0% compared with neat EP.…”

Zinc hydroxystannate dripped on magnesium hydroxide flower for enhancing smoke suppression and toxicity reduction properties of epoxy resin

“…For the XRD curves of ZHS, the typical characteristic peaks appeared at 2θ of 19.8 , 33.5 , 32.7 , 36.6 , 40.3 , 46.9 , 52.8 , 58.3 , and 68.4 . They corresponded to the (1 1 1), (2 0 0), (2 2 0), (3 1 0), (2 2 2), (4 0 0), (4 2 0), (4 2 2), and (4 4 0) crystal planes of ZHS, 29 respectively. In addition, the sharp crystal shape indicated that The chemical compositions of FMH, FMH@ZHS, and ZHS were further confirmed by XPS, and the results were shown in Figure S3.…”