【标题】Modeling heat transfer and transcrystallization kinetics during processing of polymer-based composites materials
【参考中译】聚合物基复合材料加工过程中的传热和结晶动力学模拟
【类型】 期刊
【关键词】 Composite forming; Crystallization kinetics model; Transcrystallization
【参考中译】 复合材料成形；结晶动力学模型；跨结晶
【作者】 Nicolas Bigot; M'hamed Boutaous; Shihe Xin; Nahiene Hamila
【摘要】 Transcrystallization phenomena is a key issue to master for better understanding the role on the fiber-matrix interface in composites materials behavior during and after processing. In this paper, a non-isothermal kinetics model is presented to consider crystallization in fiber-based composite with thermoplastic matrix. The model extends Schneider's formulation to describe the development of transcrystalline layers around fibers. It also mentions the possibility to easily account for shear and flow conditions in addition to the transcrystallinity. Another approach, based on the volume fractions, giving the same results, is also introduced for comparison. Then, a parametric study is proposed in order to demonstrate the relevance of the developed model by comparing its results to well-known expecting behavior from the literature. Finally, an attempt is made to compare this model to the one proposed previously in the literature by Durin and al. after correcting some unclear points in the latter.
【参考中译】 为了更好地理解纤维-基质界面在复合材料加工过程中和加工后行为中的作用，跨晶化现象是一个需要掌握的关键问题。本文提出了一种非等温动力学模型来考虑热塑性纤维基复合材料的结晶行为。该模型扩展了施耐德的S公式来描述纤维周围跨晶层的发展。它还提到了除了跨晶度之外还可以很容易地考虑剪切和流动条件的可能性。为了进行比较，还引入了另一种基于体积分数的方法，给出了相同的结果。然后，为了证明所建立的模型的相关性，将其结果与文献中众所周知的预期行为进行了比较。最后，尝试将该模型与Durin等人以前在文献中提出的模型进行了比较。在纠正了后者中的一些不明确之处之后，本文尝试将该模型与Durin等人以前在文献中提出的模型进行比较。
【来源】 Polymers for Advanced Technologies 2023, vol.34, no.2
【入库时间】 2023/7/26
【标题】Mechanical properties of interlayer hybrid textile composite materials based on modified aramid and UHMWPE fabrics
【参考中译】改性芳纶/UHMWPE层间混杂纺织复合材料的力学性能
【关键词】 Aramid fibers; Composite hybridization; Mechanical properties; Surface modification; UHMWPE fibers; Weft-knitted composites
【参考中译】 芳纶纤维；复合材料杂化；力学性能；表面改性；超高相对分子质量聚乙烯纤维；纬编复合材料
【作者】 Cuiyu Li; Jiajia Song; Wenjin Xing; Linxin Wang; Yueyan Cui; Xiaoyuan Pei
【摘要】 Aramid fibers and ultra-high molecular weight polyethylene (UHMWPE) fibers lack active surface functional groups, and the surface is smooth, limiting their practical application in textile composite materials. In this study, zinc oxide nanorods were used to grow on aramid fibers surfaces, and oxygen plasma followed by treatment with a silane coupling agent was used to modify UHMWPE fibers. The effects of surface modification on the surface morphology and composition, and mechanical properties of fibers and composites were investigated. The mechanical response of interlayer hybrid textile composite materials based on modified aramid and UHMWPE fabrics was examined. The results reveal that surface roughness, active surface functional groups, and wettability that can be controlled by treatment conditions and parameters are important for improving interface adhesion. In addition, the interlayer hybridization pattern as a result of using dissimilar layer materials and altering stacking sequence has a great impact on the mechanical behavior of hybrid textile composite materials.
【参考中译】 芳纶纤维和超高相对分子质量聚乙烯(UHMWPE)纤维表面缺乏活性官能团，且表面光滑，限制了其在纺织复合材料中的实际应用。在本研究中，利用氧化锌纳米棒在芳纶纤维表面生长，然后用氧等离子体和硅烷偶联剂处理来对超高相对分子质量聚乙烯纤维进行改性。研究了表面改性对纤维及其复合材料的表面形态、组成和力学性能的影响。研究了改性芳纶和超高相对分子质量聚乙烯(UHMWPE)织物层间混杂纺织复合材料的力学响应。结果表明，表面粗糙度、表面活性官能团以及可由处理条件和参数控制的润湿性对改善界面粘附性具有重要意义。此外，由于采用不同的层间材料和改变层叠顺序而产生的层间杂化模式对混杂纺织复合材料的力学行为有很大的影响。
【来源】 Polymers for Advanced Technologies 2023, vol.34, no.1
【标题】Greene, Tweed's abrasion-resistant composite materials comply with NSF standard
【参考中译】格林，特威德的耐磨复合材料符合NSF标准
【作者】 Simon Atkinson
【摘要】 Greene, Tweed & Co Inc reports that its abrasion-resistant line of composite materials is now certified as complying with a standard covering drinking-water system components, established by the National Sanitation Foundation (NSF).
【参考中译】 格林，特威德公司报告说，其耐磨复合材料系列现已通过认证，符合美国国家卫生基金会(NSF)制定的饮用水系统组件标准。
【来源】 Sealing Technology 2022, vol.2022, no.6