Poly(phthalazinone ether nitrile ketone)s (PPENK), as a kind of special engineering plastic, owns various excellent properties. However, high melt viscosity of it brings certain difficulty to processing and restricts its application. In this study, to solve this without decreasing thermal and mechanical properties, poly(ether ether ketone) (PEEK) was introduced into PPENK (a kind of PPEK) to prepare a new block polymer, PPENK‐b‐PEEK (Block), through the way of precursor. Due to poor solubility of PEEK, ketimines were introduced to improve its solubility and make molecular weights of it easy to control. FTIR, ¹H‐NMR, DSC, TGA, WAXD, the universal test and the rheometer were used to characterize structures and properties of Block. Results showed that the introduction of PEEK into PPENK resulted low melt viscosity, which significantly improved thermoforming performances, and this improvement was enhanced as molecular weights of PEEK were increased. In a word, a novel block polymer with excellent thermoforming performances, heat resistance, mechanical properties was prepared successfully in this way.

中文翻译：

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通过含酮亚胺的前体制备具有优异热成型性能的嵌段聚（酞嗪酮醚酮）

聚（酞嗪酮醚腈酮）（PPENK）作为一种特殊的工程塑料，具有各种优良的性能。但是，其高熔体粘度给加工带来一定困难，并限制了其应用。在这项研究中，为解决此问题而又不降低其热和机械性能，将聚醚醚酮（PEEK）引入PPENK（一种PPEK）中，以制备新的嵌段聚合物PPENK-b-PEEK（嵌段），方法是：前体的方式。由于PEEK的溶解性差，引入了酮亚胺以改善其溶解度并使分子量易于控制。FTIR，¹H-NMR，DSC，TGA，WAXD，通用测试和流变仪用于表征Block的结构和性质。结果表明，将PEEK引入PPENK会降低熔体粘度，从而显着改善了热成型性能，并且随着PEEK分子量的增加，这种改善也得到了增强。简而言之，以这种方式成功制备了具有优异的热成型性能，耐热性，机械性能的新型嵌段聚合物。