Two kinds of elastomers, styrene–butadiene copolymer (SBC) and ethylene‐methyl acrylate (EMA) were compounded by melt mixing wollastonite into polycarbonate (PC). The result demonstrated that EMA‐filled composites showed better mechanical properties compared to SBC‐filled composites, particularly elongation and impact strength. We observed a 53% increase in Izod impact strength, that is, 5.3‐fold increase in elongation of the PC/wollastonite/EMA composite by incorporating (7%) EMA. The composite also has an encouraging blending effect with a lower decrease in tensile strength of only 13%. Incorporation of EMA and SBC decreased the glass‐transition temperature (T_g) of the system from 148°C to 141°C. The rheological behavior of composites was also examined using a parallel plate rheometer. By increasing the SBC and EMA elastomer content, we observed an increase in shear viscosity, storage, and loss modulus of the composites. Scanning electron micrographs were used to study the phase structure of Izod‐fractured samples. A multiphase morphology was seen with good dispersion of wollastonite and EMA granules in the PC matrix.

中文翻译：

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苯乙烯/丁二烯共聚物和乙烯-丙烯酸甲酯弹性体的聚碳酸酯/硅灰石增韧复合材料

通过将硅灰石熔融混合到聚碳酸酯（PC）中来混合两种弹性体，即苯乙烯-丁二烯共聚物（SBC）和乙烯-丙烯酸甲酯（EMA）。结果表明，与SBC填充的复合材料相比，EMA填充的复合材料显示出更好的机械性能，特别是伸长率和冲击强度。我们观察到，通过掺入（7％）EMA，艾佐德冲击强度提高了53％，即PC /硅灰石/ EMA复合材料的伸长率提高了5.3倍。该复合材料还具有令人鼓舞的共混效果，拉伸强度降低幅度较小，仅为13％。EMA和SBC的结合降低了玻璃化转变温度（T _g）的温度范围是148°C至141°C。还使用平行板流变仪检查了复合材料的流变行为。通过增加SBC和EMA弹性体的含量，我们观察到了复合材料的剪切粘度，储存和损耗模量的增加。扫描电子显微照片用于研究悬臂梁断裂样品的相结构。观察到多相形态，硅灰石和EMA颗粒在PC基质中分散良好。