Ternary polymer blends of polyamide 6 (PA6), polycarbonate (PC), and phenol novolac (PN) were prepared by a melt mixing process. PN catalyzes the exchange reaction between PA6 and PC and promotes the generation of a copolymer, which improves the compatibility. Herein, the catalytic effect of PN was experimentally supported by an increase in torque during melt mixing and mass signals from copolymer fragments detected by mass spectroscopy. The characteristic behavior of the exchange reaction changed significantly with increasing PN amount. The promotion of in situ copolymer generation led to the formation of ternary blends, which show homogeneous morphologies and superior mechanical properties, such as high stiffness and good elongation, compared with those of the binary blends without PN. Using excess PN causes some drawbacks like brittleness due to the decomposition of the PC component. A loading amount of 1–3 wt % PN was suitable for achieving a ternary blend with improved properties.

中文翻译：

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酚酚醛酚醛树脂催化原位反应增容聚酰胺6和聚碳酸酯共混物。

聚酰胺6（PA6），聚碳酸酯（PC）和酚醛清漆（PN）的三元聚合物共混物是通过熔融混合工艺制备的。PN催化PA6与PC之间的交换反应并促进共聚物的生成，从而提高了相容性。在本文中，通过熔融混合过程中扭矩的增加和通过质谱法检测到的来自共聚物碎片的质量信号，实验上支持了PN的催化作用。交换反应的特征行为随PN含量的增加而发生显着变化。原位共聚物的产生促进了三元共混物的形成，与没有PN的二元共混物相比，三元共混物表现出均质的形态和优异的机械性能，例如高刚度和良好的伸长率。由于PC组件的分解，使用过量的PN会导致一些缺点，例如脆性。1-3 wt％PN的负载量适合于获得性能改善的三元共混物。