Due to the limited toughening effec

由于BPM520（商业丙烯酸基核壳结构抗冲改性剂）对聚对苯二甲酸丁二醇酯（PBT）/聚碳酸酯（PC）混合物的增韧作用有限，因此氧化镁（MgO）被用作酯交换催化剂，并且BPM520作为增韧剂，可通过挤出和注塑成型制备PBT / PC共混物。研究了PBT / PC共混物的结构和综合性能。热重分析，傅立叶变换红外分析，差示扫描量热法和流变学测量结果表明，PBT，PC和BPM520之间发生了酯交换反应。结果，共混物的冲击性能得到显着改善，在MgO存在下，仅需要5 wt％的BPM520即可使PBT / PC共混物具有出色的韧性，

由于BPM520（一种商用丙烯酸基壳结构冲击改性剂）对聚（丁烯二苯乙酸酯）/聚碳酸酯（PC）混合物的强化作用有限，氧化镁（MgO）被用作转增催化剂，BPM520用作通过挤出和注塑成型来准备PBT/PC混合物的强化剂。对PBT/PC混合物的结构和综合特性进行了调查。热重力分析、Fourier变换红外分析、差分扫描热量测定和流变测量结果表明，PBT、PC和BPM520发生转增反应。因此，混合物的冲击性能得到了显著改善，只需要 5 wt% 的 BPM520，使 PBT/PC 混合物在 MgO 存在的情况下具有出色的韧性，这暗示了 PBT/PC 混合物的高效强化方法。

Due to the limited toughening effect of BPM520 (a commercial acrylic-based core–shell structure impact modifier) on poly(butylene terephthalate) (PBT)/polycarbonate (PC) blends, magnesium oxide (MgO) was used as a transesterification catalyst, and BPM520 as a toughening agent to prepare PBT/PC blends by extrusion and injection molding. The structures and comprehensive properties of PBT/PC blends were investigated. Results of thermogravimetric analysis, Fourier transform infrared analysis, differential scanning calorimetry, and rheological measurements showed that transesterification reactions occurred among PBT, PC, and BPM520. As a result, the impact property of the blends was improved significantly, and only 5 wt % of BPM520 was needed to make the PBT/PC blend possess excellent toughness in the presence of MgO, which suggested a very efficient toughening approach for PBT/PC blends.<br>