ABSTRACT

In this study, a simple and efficient hydrothermal carbonization method was proposed to synthesize anhydrous magnesium carbonate (MgCO₃) particles with block-, cube-, corncob-, and sphere-like morphologies, and their crystal phase, chemical structure, and thermal stability were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA), respectively. The four MgCO₃ particles were, respectively, incorporated into polyvinyl chloride (PVC) to prepare the composites, and the mechanical properties of MgCO₃/PVC composites were investigated. The results show that four MgCO₃ particles can reinforce and toughen PVC, and cube-like MgCO₃ (A-MC) shows the best modification effect.

摘要

在这项研究中，提出了一种简单有效的水热碳化方法，以合成具有块状，立方状，玉米芯状和球形状，晶体相，化学结构和热稳定性的无水碳酸镁（MgCO ₃）颗粒。分别用X射线衍射（XRD），傅里叶变换红外（FT-IR）光谱和热重分析（TGA）表征。将四种MgCO ₃颗粒分别掺入聚氯乙烯（PVC）中制备复合材料，并研究了MgCO ₃ / PVC复合材料的力学性能。结果表明，四种MgCO ₃颗粒可以增强PVC和坚韧的PVC颗粒，并具有立方体状的MgCO ₃ （A-MC）显示最佳的修饰效果。