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A novel nanocomposite of NH2-MIL-125 modified bismaleimide-triazine resin with excellent dielectric properties
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-08-02 , DOI: 10.1002/app.51487 Xiaodan Li 1 , Xinyu Hu 1, 2 , Xiaoping Liu 1 , Xiaoqing Liu 1 , Rui He 1 , Hongyu Liu 1 , Xianzhang Ling 2
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-08-02 , DOI: 10.1002/app.51487 Xiaodan Li 1 , Xinyu Hu 1, 2 , Xiaoping Liu 1 , Xiaoqing Liu 1 , Rui He 1 , Hongyu Liu 1 , Xianzhang Ling 2
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The NH2-MIL-125 nanoparticles of amino-functionalized titanium-based metal organic frameworks were prepared by the solvothermal method and their nanocomposites with bismaleimide-triazine resin (BT resin) were prepared. The research results showed that NH2-MIL-125 could significantly catalyze the curing reaction of BT resin to form triazine rings, which was attributed to the synergistic catalysis the self-polymerization of cyanate ester by the amino group and Ti4+ in NH2-MIL-125. Because of the increase of triazine ring in crosslinking structures, the initial storage modulus of NH2-MIL/BT nanocomposites improved. But the steric hindrance of NH2-MIL-125 brought the decrease on the crosslinking density and the increase on the free volume of nanocomposites. Meanwhile, besides the introduction of nanopores, the formation of more triazine rings and the increase of free volume, NH2-MIL-125 reduced the interface charge accumulation of nanocomposites through the Michael addition reaction with bismaleimide, which contributed to the reduction of dielectric constant of nanocomposites. In addition, NH2-MIL-125 with good dispersion played a toughening role and also improved the thermal stability and moisture resistance of nanocomposites. In this study, NH2-MIL-125 not only introduced nanopores but also changed crosslinking structures of BT resin, which provided a novel approach to obtain low-dielectric materials.
中文翻译：
具有优异介电性能的新型NH2-MIL-125改性双马来酰亚胺-三嗪树脂纳米复合材料
采用溶剂热法制备了氨基官能化钛基金属有机骨架的NH 2 -MIL-125纳米颗粒，并制备了其与双马来酰亚胺-三嗪树脂（BT树脂）的纳米复合材料。研究结果表明，NH 2 -MIL-125能显着催化BT树脂的固化反应形成三嗪环，这是由于NH 2 中氨基与Ti 4+协同催化氰酸酯自聚合反应所致。-MIL-125。由于交联结构中三嗪环的增加，NH 2 -MIL/BT纳米复合材料的初始储能模量提高。但是NH 2的位阻-MIL-125 导致纳米复合材料的交联密度降低和自由体积增加。同时，除了引入纳米孔、形成更多的三嗪环和增加自由体积外，NH 2 -MIL-125通过与双马来酰亚胺的迈克尔加成反应减少了纳米复合材料的界面电荷积累，这有助于降低介电常数纳米复合材料。此外，分散性好的NH 2 -MIL-125起到增韧作用，也提高了纳米复合材料的热稳定性和耐湿性。在本研究中，NH 2-MIL-125 不仅引入了纳米孔，还改变了 BT 树脂的交联结构，为获得低介电材料提供了一种新方法。
更新日期：2021-09-27
中文翻译：
具有优异介电性能的新型NH2-MIL-125改性双马来酰亚胺-三嗪树脂纳米复合材料
采用溶剂热法制备了氨基官能化钛基金属有机骨架的NH 2 -MIL-125纳米颗粒，并制备了其与双马来酰亚胺-三嗪树脂（BT树脂）的纳米复合材料。研究结果表明，NH 2 -MIL-125能显着催化BT树脂的固化反应形成三嗪环，这是由于NH 2 中氨基与Ti 4+协同催化氰酸酯自聚合反应所致。-MIL-125。由于交联结构中三嗪环的增加，NH 2 -MIL/BT纳米复合材料的初始储能模量提高。但是NH 2的位阻-MIL-125 导致纳米复合材料的交联密度降低和自由体积增加。同时，除了引入纳米孔、形成更多的三嗪环和增加自由体积外，NH 2 -MIL-125通过与双马来酰亚胺的迈克尔加成反应减少了纳米复合材料的界面电荷积累，这有助于降低介电常数纳米复合材料。此外，分散性好的NH 2 -MIL-125起到增韧作用，也提高了纳米复合材料的热稳定性和耐湿性。在本研究中，NH 2-MIL-125 不仅引入了纳米孔，还改变了 BT 树脂的交联结构，为获得低介电材料提供了一种新方法。
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