In this work, PA6/EPDM-MA was added as an impact modifier for high-performance polypropylene (PP) production. PA6/EPDM-MA compounds were processed in an internal mixer, aiming at chemical reaction between maleic anhydride of EPDM-MA and the amine terminal groups of PA6. Afterward, PP/(PA6/EPDM-MA) blends were processed by extrusion and injection molding. Rheological properties were evaluated using torque rheometry; additionally, Fourier transform infrared spectroscopy, Molau test, impact and tensile strengths, Shore D hardness, thermal deflection temperature, X-ray diffraction, differential scanning calorimetry, thermogravimetry, water absorption, contact angle, and scanning electron microscopy tests were performed in injected specimens. PP/(PA6/EPDM-MA) with 70/(15/15)% displayed quite high increase in impact and elongation at break, with gains of 850% and 265%, compared to neat PP. There were no drastic losses in tensile strength, elastic modulus, and Shore D hardness, due to PA6 addition. A significant increase was seen in the thermal stability of PP/(PA6/EPDM-MA), corroborating the increase in structural stability seen in HDT. SEM images showed high interfacial adhesion between PP and PA6/EPDM-MA corroborating higher mechanical properties. Summing up, PA6/EPDM-MA premix acted as an efficient impact modifier for PP. Acquired data show that P6/EPDM-MA system was effective in developing high-performance PP with potential for application in the automotive and electronics industries.

中文翻译：

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PA6/EPDM-MA共混物的反应加工作为改性剂用于高性能聚丙烯的应用和开发

在这项工作中，PA6/EPDM-MA 被添加为高性能聚丙烯 (PP) 生产的抗冲改性剂。PA6/EPDM-MA 化合物在密炼机中加工，旨在使 EPDM-MA 的马来酸酐与 PA6 的胺端基发生化学反应。之后，PP/(PA6/EPDM-MA) 共混物通过挤出和注射成型进行加工。使用扭矩流变仪评估流变性能；此外，还对注射样品进行了傅里叶变换红外光谱、莫劳试验、冲击和拉伸强度、肖氏 D 硬度、热变形温度、X 射线衍射、差示扫描量热法、热重法、吸水率、接触角和扫描电子显微镜测试. 具有 70/(15/15)% 的 PP/(PA6/EPDM-MA) 显示出相当高的冲击和断裂伸长率增加，与纯 PP 相比，增益分别为 850% 和 265%。由于 PA6 的添加，拉伸强度、弹性模量和肖氏 D 硬度没有显着损失。PP/(PA6/EPDM-MA) 的热稳定性显着增加，证实了 HDT 中结构稳定性的增加。SEM 图像显示 PP 和 PA6/EPDM-MA 之间的高界面附着力证实了更高的机械性能。综上所述，PA6/EPDM-MA 预混料可作为 PP 的有效抗冲改性剂。获得的数据表明，P6/EPDM-MA 系统可有效开发高性能 PP，具有在汽车和电子行业的应用潜力。PP/(PA6/EPDM-MA) 的热稳定性显着增加，证实了 HDT 中结构稳定性的增加。SEM 图像显示 PP 和 PA6/EPDM-MA 之间的高界面附着力证实了更高的机械性能。综上所述，PA6/EPDM-MA 预混料可作为 PP 的有效抗冲改性剂。获得的数据表明，P6/EPDM-MA 系统可有效开发高性能 PP，具有在汽车和电子行业的应用潜力。PP/(PA6/EPDM-MA) 的热稳定性显着增加，证实了 HDT 中结构稳定性的增加。SEM 图像显示 PP 和 PA6/EPDM-MA 之间的高界面附着力证实了更高的机械性能。综上所述，PA6/EPDM-MA 预混料可作为 PP 的有效抗冲改性剂。获得的数据表明，P6/EPDM-MA 系统可有效开发高性能 PP，具有在汽车和电子行业的应用潜力。