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Mechanical and structural investigation of isotropic and anisotropic thermoplastic magnetorheological elastomer composites based on poly(styrene-b-ethylene-co-butylene-b-styrene) (SEBS)
Magnetorehological elastomer SEBS Carbonyl iron Elastomer Filled polymer Viscoelasticity
2015/3/30
Novel smart thermoplastic magnetorheological elastomer composites containing micron-sized magnetic carbonyl iron (CI) particles were prepared with a poly(styrene-ethylene-butylene-styrene) (SEBS) trib...
LLDPE/SEBS-g-MAH体系的等温结晶动力学
LLDPE SEBS-g-MAH 差示扫描量热法 等温结晶动力学
2010/1/26
采用差示扫描量热法(DSC)研究了SEBS-g-MAH对LLDPE等温结晶行为的影响,并通过偏光显微镜(POM)观察了LLDPE及LLDPE/SEBS-g-MAH共混体系的结晶形态。结果表明,SEBS-g-MAH的加入阻碍了LLDPE分子链的规则排列,影响了链段在结晶扩散迁移规整排列的速度,使得结晶速率变慢,结晶活化能升高,对LLDPE晶体生长起了抑制作用,晶粒尺寸减小。用Avrami方程进行等温...
SEBS三嵌段共聚物膜的形态研究
三嵌段共聚物 形态特征 电子结构
2009/3/20
Surface morphologies of the films of poly [styrene-b-(ethylene-co-butene)-b-styrene] (SEBS) have been studied by using tapping-mode atomic force microscopy (TM-AFM). The films of block copolymer were...
The Surface Energy Balance System (SEBS) for estimation of turbulent heat fluxes
Surface energy balance turbulent heat flux evaporation
2009/3/17
A Surface Energy Balance System (SEBS) is proposed for the estimation of atmospheric turbulent fluxes and evaporative fraction using satellite earth observation data, in combination with meteorologica...
Tensile mechanical properties in PP/SEBS/Microballon composites under impact loadings
Properties Mechanical properties Strain rate
2010/1/19
Purpose: The mechanical properties of the syntactic polymer foams at the intermediate and high strain rates
were not understood comprehensively. Then, this study characterizes the tensile mechanical ...
溶液浇铸SEBS薄膜的相翻转
嵌段共聚物膜 相翻转 原子力显微镜
2007/12/13
本文利用敲击模式原子力显微镜对柔软的三嵌段共聚物聚苯乙烯-co-聚乙烯/丁烯-co-聚苯乙烯(SEBS)膜的成像进行了细致研究,发现该共聚物可发生微相分离形成约几十纳米的相畴,当用不同敲击力进行成像时,则很容易看到AFM图像由原图经中间过渡图到与原图完全相反的图像的转变过程。强力敲击不仅能够导致图像翻转的产生,而且可导致相畴尺寸和图像粗糙度的差别。我们认为针尖和样品间的吸引排斥作用以及针尖对柔软样...
文章摘要:
针对具有网状结构的PPO/SEBS--g--MAH共混合金冲击断面的形貌和微观形变过程,提出了“瞬间原位大取向”增韧模型. 该模型认为, 超韧PPO/SEBS--g--MAH的冲击断裂首先是弹性体周围产生微穴, 微穴诱发基体产生剪切带, 基体在剪切屈服过程中被网状的弹性体携带共同发生大的取向行为, 形成取向分子束, 从而吸收大量能量, 达到超韧水...
PPO/SEBS--g--MAH共混体系的冲击断面和微观形变过程
PPO/SEBS--g—MAH 网状结构 冲击断面
2007/10/26
文章摘要:
用扫描电子显微镜(SEM)观察了PPO/SEBS和PPO/SEBS--g--MAH共混物的常温缺口冲击断面,发现PPO/SEBS共混体系的冲击断面上有大量韧窝; PPO/SEBS--g--MAH共混体系则呈现中心为棒, 四周为环的冲击断面形貌. 对PPO/SEBS--g--MAH冲击断面的应力发白区的SEM观察结果表明在冲击断面下方, 合金发生大...