Journal of Materiomics:碳纳米管海绵增强纳米复合材料的力学性能
二维材料、纳米管、晶须等纳米材料因具有较高的比强度，常用作增强材料，尤其在提高高分子材料的力学性能方面表现优异，今天小编就带大家欣赏2篇相关论文~
提前预告，第1期微信公众号将为大家奉上：二维材料的光致发光效应和生物传感器应用。
力学性能
Mechanical properties of nanocomposites reinforced by carbon nanotube sponges
碳纳米管海绵增强纳米复合材料的力学性能
Authors: Wenjie Zhao, Tong Li, Yupeng Li, Daniel J. O'Brien, Mauricio Terrones, Bingqing Wei, Jonghwan Suhr** and X Lucas Lu**
Volume 4, Issue 2, Pages 157-164
Carbon nanotube (CNT) sponge exhibits unique porous and hierarchical structure that are beneficial to the design of ultralight and tough composites.
碳纳米管（CNT）海绵呈现独特的多孔和分层结构，有利于超轻和高韧性复合材料的设计。
In this study, CNT sponges (undoped and boron doped) reinforced polydimethylsiloxane (PDMS) composites were fabricated.
本研究制备了CNT海绵（未掺杂和硼掺杂）增强的聚二甲基硅氧烷（PDMS）复合材料。
Mechanical properties of the composite, including compressive modulus, rate-dependent modulus, stress relaxation behaviors, dynamic viscoelastic properties, and their dependency on temperature, were systematically investigated.
系统地研究了该复合材料的力学性能，包括压缩模量，速率依赖模量，应力松弛行为，动态粘弹性质以及它们对温度的依赖性。
A micromechanical model, Mori-Tanaka model, was validated to describe the mechanical behaviors of CNT sponge reinforced composites.
Mori-Tanaka微机械模型被验证可用于描述CNT海绵增强复合材料的力学行为。
By coupling with boron-doped CNT sponge, PDMS composites showed remarkable improvement of mechanical properties, including compressive modulus (70%), viscous modulus (243%) and damping capacity (50%).
通过与硼掺杂的CNT海绵偶联，PDMS复合材料的机械性能显著提高，包括压缩模量（70％），粘性模量（243％）和阻尼能力（50％）。
Such reinforcement effects can be controlled by the morphology of CNT sponges, as the boron-doped and undoped nanocomposites showed distinct viscoelastic behaviors.
这种增强效应可以通过CNT海绵的形态来控制，因为硼掺杂和未掺杂的纳米复合材料显示出不同的粘弹性行为。
The results proved that CNT sponge reinforcement is a promising strategy to develop engineering composites with both outstanding mechanical stiffness and controllable viscoelastic performances.
结果表明，CNT海绵增强在开发具有优异机械刚度和可控粘弹性能的工程复合材料方面具有潜力。
文中部分图片：
制备方法、力学测试试样、单向压力测试
Fig. 1. (a) The fabrication process of CBxMWNT and undoped-MWNT PDMS composite. (b) The geometry of cylinder PDMS and composite samples prepared for mechanical testing. The embedded CNTs can be observed in the composite in SEM images and the original CNT sponge framework for the composite is also provided. (c) Illustration of compressional loading and the monotonic compressive stress-strain curves of PDMS and two CNT composites with loading at the loading strain rates of 10−4/s.
碳纳米管显微形貌、复合材料应力应变曲线、弹性模量随着应变的变化
Fig. 2. (a) and (b) represent the detailed structures of undoped-MWNT and CBxMWNT. (c) Representative stress-strain behaviors of CBxMWNT composite under unconfined compression. (d) The variance of modulus for three materials under two different loading rate. E1 and E0 represent the modulus under loading rate of 10−2/s and 10−4/s, respectively.
应力松弛
Fig. 3. (a) Representative stress response of CBxMWNT composite in stress relaxation test. The value R2 attains 0.998, which quantifies for a good curve fitting. (b–d) Elastic modulus, viscous modulus, and relaxation time of CBxMWNT composite, undoped-MWNT composite, and pure PDMS plotted as a function of strain level. “*” indicates significant difference between groups (N = 5, p < 0.05).
动态粘弹性
Fig. 4. (a) Representative curves of storage modulus of CBxMWNT composite at a different temperature. (b) Master curve of storage modulus constructed for CBxMWNT composite. (c, d) Master curves of storage modulus and loss factor for pure PDMS, undoped-MWNT and CBxMWNT composites as a function of log frequency (N = 4).
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力学性能与阻燃性
Mechanical properties and flame retardancy of surface modified magnesium oxysulfate (5Mg(OH)2·MgSO4·3H2O) whisker for polypropylene composites
表面改性氧硫酸镁(5Mg(OH)2·MgSO4·3H2O)晶须复合聚丙烯材料的力学性能和阻燃性能
Authors: Eui-SuKim, Ye Chan Kim, Jungwoo Park, Youngjun Kim, Sung-Hoon Kim, Kwang Jin Kim, JonghwanSuhr, Youngkwan Lee, Seong HoonLee, Dae-Sik Kim, Soo-Hyun Kim, Ju-Ho Yun, In-KyungPark**, and Jae-Do Nam*
Volume 4, Issue 2, Pages 149-156
氧化硫酸镁晶须；热重分析阻燃性
Magnesium oxysulfate (MOS) whisker is considered as a promising inorganic material recently attracting a great attention for being used as a reinforcing filler for polymer composites due to high aspect ratio and extremely-low bulk density.
氧化硫酸镁（MOS）晶须近年来被认为是一种有前景的无机材料，因其高的纵横比和极低的体密度而在聚合物复合材料的增强填料领域引起了极大关注。
In this study, the MOS was treated with 3-methacryloyloxypropyl-trimethoxy silane (MPS) via sol-gel condensation reactions, which successfully allowed melt mixing with polypropylene (PP) up to 30 wt% of MOS.
在这项研究中，采用3-甲基丙烯酰氧基丙基三甲氧基硅烷（MPS），通过溶胶-凝胶法对MOS进行缩合反应处理，成功地制备了熔融混合达到30wt％MOS的聚丙烯（PP）。
The tensile strength at yield and modulus of the MOS/PP composites were substantially increased by 50.8% and 362%, respectively, when compared with the pristine PP.
与原始PP相比，MOS/ PP复合材料的屈服拉伸强度和模量分别提高了50.8％和362％。
As a novel finding, the flame retardancy of MOS was proved by identifying water evolution at elevated temperatures giving out 9 wt% of water in 250-320°C and 14 wt% in 350-420°C in two steps.
作为一项新发现，MOS的阻燃性通过确定在高温下析出的水量来证明，其中在250-320℃下和在350-420℃下分别得到9wt％和14wt％的水。
This work demonstrated that the MOS could be an excellent filler for PP not only increasing the mechanical properties in a great extent but also imposing flame retarding capability.
这项工作表明，MOS可以作为PP的优良填料，它不仅能在很大程度上提高机械性能，而且还具有阻燃能力。
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https://www.sciencedirect.com/science/article/pii/S2352847818300030
2019年即将来到，JMAT全体成员恭祝大家元旦快乐，万事如意
最后再向大家介绍一下我们闪亮亮的JMAT期刊。它的全称是Journal of Materiomics，是由中国硅酸盐学会和Elsevier合作出版的英文期刊,现已在ScienceDirect上发布了第四卷第四期（2018年），点击文末“阅读全文“可自由获取所有论文全文。
Journal of Materiomics 为同行评议期刊,被web of science和scopus收录，截至目前，最新cite score为7.27，从投稿到在线出版一般只需60天，并且对作者免收发表费！ 投稿说明详见https://www.journals.elsevier.com/journal-of-materiomics/, 期望大家不吝赐稿
。