Coal/ZnAl-Layered double hydroxides (ZnAl-LDHs) composites were synthesized via a co-precipitate method using Shenfu coal as a raw material. Effect of coal on the structure, morphology and thermal properties of coal/LDHs composites were investigated by XRD, FT-IR, SEM and DSC analysis methods. The results indicated that coal provided acidic functional groups as the interlayer anion of composites, and the mineral materials in coal made the structure of composites more complicated. The morphologies and particle sizes of composites were affected by the porosity and network characteristics of coal. Although exothermic behavior of coal weakened the endothermic efficiency of ZnAl-LDHs during the degradation process, the coal char on the surface of composites formed an insulation layer, which provided a synergistic fire retardant of ZnAl-LDHs in coal spontaneous combustion.
A macromolecular antioxidant was prepared by copolymerization with styrene and modified A1010-co-PS. Its chemical structure was confirmed by Fourier transform infrared (FTIR). It was added into the formula of PS composite material and the thermal and oxygen aging experiment was carried out on the material. The tensile strength is stable at about 27MPa, the bending strength is stable at about 33MPa, and the impact strength is stable at about 2.3kJ/m2. The results show that it has a more significant effect than antioxidant 1010 and has higher performance stability.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.