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Polystyrene particles (EPS) were used as the doping material, which were hydrophilic modified by different surfactants. On this basis, polystyrene particles were added to foam concrete, and the effects of hydro¬philic modified polystyrene particles on the mechanical properties and thermal insulation performance of concrete were studied. The results showed that unmodified polystyrene belongs to hydrophobic materials with a contact angle of 112°. After modification with triethanolamine, the contact angle decreased to 31°, indicating ex¬cellent hydrophilicity. Foam concrete had porous characteristics, and the pore size distribution was 20-230 µm. The setting time decreased with the increase of polystyrene particle doping, the fluidity first increased and then decreased, the solidification time of EPS-0.9% was 90 minutes, and the highest fluidity was 17.9 mm. With the increase of EPS particles, the compressive strength of foam concrete continued decreasing, the flexural strength first decreased and then slightly increased, the thermal conductivity and dry density first decreased and then increased, and the carbonation resistance continued decreasing. At 28 d of age, the compressive strength of the EPS-1.2% sample reached the minimum value of 5.2 MPa, and the carbonization depth reached the maximum value of 2.13 mm. The flexural strength of the EPS-0.6% sample reached a maximum value of 0.57 MPa. The dry density and thermal conductivity of the EPS-0.9% sample reached the lowest values, which were 357 kg/m³ and 0.069 W/(m • K), respectively, indicating the best insulation performance. [ABSTRACT FROM AUTHOR]

Large‐sized transparent scintillators with a high photoluminescent quantum yield (PLQY) and self‐absorption‐free properties are highly desired to achieve high spatial resolution X‐ray imaging. In this research, a transparent 0D organic–inorganic (ETP)2SbCl5 (ETP = Ethyl triphenylphosphine) amorphous wafer is developed by melting the ETPCl and SbCl3 mixture and then undergoing a quenching process. The obtained amorphous wafer exhibits a high light transmittance of 86% in the range of 450–800 nm. It also shows a light emission peak at 624 nm, a Stokes shift of 259 nm, and PLQY approaching unity (99.3%). These properties enable it to produce X‐ray images with a high spatial resolution of 19.0 lp mm−1 at a modulation transfer function (MTF) value of 0.2, among the best values reported. Additionally, it also shows remarkable stability under continuous X‐ray illumination. Its unique optical properties and ability to be processed in large sizes make the organic–inorganic metal halide transparent wafer a promising scintillator. This also demonstrates the potential application of the melt‐quenching method in fabricating highly luminescent, low‐electronic‐dimensional metal halide wafers. [ABSTRACT FROM AUTHOR]