Mechanical and viscoelastic properties of novel resin-infused thermoplastic tri-block copolymer 3D glass fabric composites

IF 5 2区 材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
F.H.A. Rahim , S.Z.H. Shah , P.S.M. Megat-Yusoff , S.M. Hussnain , R.S. Choudhry , M.Z. Hussain
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引用次数: 0

Abstract

The current study investigates the mechanical and viscoelastic properties of a novel acrylic resin-infused thermoplastic (Elium®) tri-block copolymer (Nanostrength®) 3D fibre-reinforced composites (FRCs). The toughened thermoplastic resins with three different concentrations of tri-block copolymer, i.e., 10 wt%, 15 wt%, and 20 wt%, were prepared and used to fabricate thermoplastic 3D-FRCs using a vacuum-assisted resin-infusion process at room temperature. The flexural, interlaminar, and viscoelastic properties and failure modes were evaluated and compared with those of pristine thermoplastic 3D-FRCs. The addition of tri-block copolymer significantly improves the flexural strength of 3D-FRC (up to 75 % and 34 % along the warp and fill directions, respectively, at 15 wt% of tri-block copolymer) and interlaminar shear strength (up to 80 % and 111 % along the warp and fill directions, respectively, at 20 wt% of tri-block copolymer). Additionally, the residual flexure and interlaminar shear strength improved up to 35 % and 109 % at 15 wt% of tri-block copolymer. Dynamic mechanical analysis (DMA) demonstrated that the glass transition temperature and storage modulus of thermoplastic 3D-FRCs were increased up to 11 °C and 24 %, respectively at 20 wt% of tri-block copolymer, which may be due to increased physical crosslinking and the agglomeration of tri-block copolymer particles. The improved mechanical and viscoelastic properties of resin-infused thermoplastic tri-block copolymer 3D-FRCs are attributed to better interface adhesion, improved matrix toughness, and crack-bridging mechanisms induced by the tri-block copolymer. The toughened thermoplastic 3D-FRCs can be utilized in the design and development of composite structures for improved damage tolerance applications.

新型树脂灌注热塑性三嵌段共聚物 3D 玻璃纤维织物复合材料的机械性能和粘弹性能
本研究探讨了新型丙烯酸树脂注入热塑性塑料(Elium®)三嵌段共聚物(Nanostrength®)三维纤维增强复合材料(FRC)的机械和粘弹性能。制备了含有三种不同浓度三嵌段共聚物(即 10 wt%、15 wt% 和 20 wt%)的增韧热塑性树脂,并采用真空辅助树脂灌注工艺在室温下制造了热塑性三维纤维增强复合材料。与原始热塑性 3D-FRC 相比,对其弯曲、层间和粘弹性能及失效模式进行了评估和比较。添加三嵌段共聚物后,3D-FRC 的抗弯强度(三嵌段共聚物含量为 15 wt% 时,沿经线和填充方向的抗弯强度分别提高了 75% 和 34%)和层间剪切强度(三嵌段共聚物含量为 20 wt% 时,沿经线和填充方向的层间剪切强度分别提高了 80% 和 111%)均有显著提高。此外,三嵌段共聚物的重量百分比为 15 时,残余抗弯强度和层间剪切强度分别提高了 35% 和 109%。动态力学分析(DMA)表明,当三元嵌段共聚物的重量百分比为 20 时,热塑性 3D-FRC 的玻璃化转变温度和储存模量分别提高了 11 ℃ 和 24%,这可能是由于物理交联和三元嵌段共聚物颗粒团聚增加所致。树脂灌注热塑性三嵌段共聚物 3D-FRC 力学性能和粘弹性能的改善归因于更好的界面粘附性、基体韧性的改善以及三嵌段共聚物诱导的裂缝桥接机制。增韧的热塑性 3D-FRC 可用于复合材料结构的设计和开发,以提高损伤耐受性。
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来源期刊
Polymer Testing
Polymer Testing 工程技术-材料科学:表征与测试
CiteScore
10.70
自引率
5.90%
发文量
328
审稿时长
44 days
期刊介绍: Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.
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