相关实验视频
Updated: Jun 28, 2026

08:43
Fused Filament Fabrication FFF of Metal-Ceramic Components
Published on: January 11, 2019
17.2K
研究充满的SSBR和BR模型化合物的风学,机械和粘弹性性能
Anmol Aggarwal1, Nico Hackel2,3, Fabian Grunert1
1Department of Elastomer Technology and Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
Polymers
|November 27, 2024
概括
这项研究调查了填充剂加载如何影响的性能. 较高的二氧化含量通常会提高刚性,但由于填充剂-聚合物相互作用较差,可能会使某些的性能恶化,例如布他 (BR) .
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 技术 技术 技术
背景情况:
- 像二氧化和碳黑这样的活性填充剂对于增强的机械和粘弹性性能至关重要.
- 填料增强源于物理和化学相互作用,显著影响化合物的行为.
- 微结构和聚合物功能化增加了填充剂-聚合物相互作用的复杂性.
研究的目的:
- 为了研究不同填充剂负载 (0-108 phr/0-25体积) 的影响. %) 的气质,机械和粘弹性特性.
- 为了比较不同溶液中二氧化的性能,乙烯 (SSBR) 和乙烯 (BR).
- 了解填充剂加载量,类型和复合物特性之间的关系.
主要方法:
- 测试不同载荷的化合物的风学,机械和粘弹性性能.
- 对未固化的化合物进行佩恩效应测量,以分析填充剂网络行为和透.
- 在各种温度下对固化的化合物进行动态机械分析 (菌株扫描).
主要成果:
- 穆尼的粘度和硬度随着二氧化的加载而增加,表明化合物刚度提高.
- 确定二氧化的透值在15-17.5卷之间. 百分比.百分比.百分比.百分比.百分比.百分比.
- 与SSBR相比,布塔 (BR) 化合物在高负载下表现较差,这是由于聚合物-填充剂相互作用较弱而导致的.
- 准静态的机械性能表现出最佳的填料负载.
- 类型,填充剂加载量和温度显著影响了玻璃桥,影响了承载能力和能量消耗.
结论:
- 填充剂加载是影响SSBR和BR化合物的特性的一个关键因素.
- 优化填充剂加载对于实现所需的机械性能至关重要.
- 类型的选择显著影响了填充剂-聚合物相互作用和整体化合物行为,特别是在更高的填充剂度下.
相关概念视频
Plastic Behavior
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.
Residual Stresses
Residual stresses reside in a structure even after removing the original stress inducer. This phenomenon often arises from varied plastic deformations across different parts of a structure. Consider a rod stretched beyond its yield point. It will not regain its original length due to permanent deformation. Even after load removal, the rod does not entirely lose stress because of uneven plastic deformations, resulting in residual stresses. The computation of these stresses in structures is...
Stresses under Combined Loadings
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
Strain-Energy Density
Understanding the strain energy density in materials under axial load is crucial for evaluating their mechanical behavior and durability. When a rod is subjected to such a load, it elongates and stores energy, known as strain energy, as potential energy within the material. This energy is measured in terms of energy per unit volume.
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this region...
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this region...
Classification and Mechanical Properties of Synthetic Polymers
Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
Typical Model Studies
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

