Improvement of dielectric, processing and mechanical properties of phthalonitrile resins by copolymerisation with bismaleimide resin

IF 4.1 2区 化学 Q2 POLYMER SCIENCE Polymer Pub Date : 2024-12-16 DOI:10.1016/j.polymer.2024.127962
Jiajia Ye, Tao Wang, Miao Wu, Shuai Zhang, Xiaobo Liu, Lifen Tong
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Abstract

Phthalonitrile resin is an excellent material with high-temperature resistance, making it an ideal choice for a variety of high-temperature applications. However, the rapid development of the electronics industry has resulted in the emergence of more rigorous performance requirements for high-temperature resistant materials. In this study, 4,4′-bismaleimidodiphenylmethane (BDM) was used to modify benzoxazine-containing phthalonitrile resin (BAph). The results demonstrated that the incorporation of BDM resin effectively reduces the curing reactivity of phthalonitrile (PN) resin and widens the processing temperature window. Moreover, the copolymer (Poly(PN-BDM)s) exhibits excellent dimensional and thermal stability, as well as a low dielectric constant, that are, CTE reduces from 134 ppm/°C of Poly(PN) to 94.1 ppm/°C of Poly(PN-40BDM), εr' decreases to 3.22. Furthermore, the excellent interfacial adhesion between the resin matrix composites (G(PN-BDM)s) resin and the glass fibers greatly improves the mechanical properties of the G(PN-BDM)s, with more than 3 times the peel strength and more than 2 times the flexural strength and modulus.

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通过与双马来酰亚胺树脂共聚改善邻苯二腈树脂的介电性能、加工性能和机械性能
邻苯二腈树脂是一种耐高温的优良材料,是各种高温应用的理想选择。然而,随着电子工业的快速发展,对耐高温材料的性能要求也越来越严格。本研究采用 4,4′-双马来酰亚胺二苯基甲烷(BDM)对含苯并噁嗪的邻苯二甲腈树脂(BAph)进行改性。结果表明,BDM 树脂的加入有效降低了邻苯二腈树脂的固化反应性,并拓宽了加工温度窗口。此外,共聚物(Poly(PN-BDM)s)具有优异的尺寸稳定性和热稳定性,介电常数低,即 CTE 从 Poly(PN) 的 134 ppm/°C 降至 Poly(PN-40BDM) 的 94.1 ppm/°C,εr'降至 3.22。此外,树脂基复合材料(G(PN-BDM)s)树脂与玻璃纤维之间良好的界面粘附性大大提高了 G(PN-BDM)s 的机械性能,剥离强度提高了 3 倍以上,弯曲强度和模量提高了 2 倍以上。
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来源期刊
Polymer
Polymer 化学-高分子科学
CiteScore
7.90
自引率
8.70%
发文量
959
审稿时长
32 days
期刊介绍: Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.
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