In this study, bentonite/epoxy sheet molding compound composites (BS/ESMC) were prepared with different bentonite contents (0.5, 1, 1.5, 2, 2.5, 5, and 10 wt%) by hot compression molding. The effects of BS content on the mechanical properties, thermal stability, and fire-retardant properties of samples were investigated. When the BS addition amount is 1.5%, the tensile strength, flexural strength, and impact strength reach the maximum, increasing by 24.15%, 26.56%, and 51.33%, respectively. The measurement of mechanical properties showed that the fracture toughness of BS/ESMC composite has been greatly improved from 71.41 to 108.07 MPa. As the content of the bentonite increases, the heat resistance of the sample increases, and the residual carbon content of the system increases by 61.54% when the amount of the bentonite added is 10%. In addition, the value of LOI increased from 25.6 to 27.9 with the addition of the bentonite.

中文翻译：

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膨润土改性环氧片状模塑料的制备及性能研究

在这项研究中，通过热压成型制备了具有不同含量（0.5、1、1.5、2、2.5、5和10 wt％）的膨润土/环氧树脂片状模塑料复合材料（BS / ESMC）。研究了BS含量对样品力学性能，热稳定性和阻燃性能的影响。当BS添加量为1.5％时，抗张强度，弯曲强度和冲击强度达到最大，分别增加24.15％，26.56％和51.33％。力学性能测试表明，BS / ESMC复合材料的断裂韧性从71.41 MPa大大提高到108.07 MPa。随着膨润土含量的增加，样品的耐热性增加，并且当膨润土的添加量为10％时，系统的残余碳含量增加61.54％。此外，