Thermodynamics and Stability of Polymer-Derived Materials

D. Suttor; H.-J. Kleebe; S. Trassi

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Thermodynamics and Stability of Polymer-Derived Materials

机译：聚合物衍生材料的热力学和稳定性

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Thermal stability has been recognized as a key aspect with respect to the development and application of polymer derived materials. In this work, polymer precursors, e.g., polysilazanes with defined structure were synthesized starting from functionalized chlorosilanes. Monolithic materials were prepared and heat treated at various temperatures in order to initiate crystallization processes. Besides structural changes within the amorphous structure, surface crystallization is frequently observed in this type of materials. Thermodynamic arguments can be used to rationalize the surface crystallization, the transition from a ternary towards a binary system being an important factor.

机译：对于聚合物衍生材料的开发和应用，热稳定性已被认为是关键方面。在这项工作中，从官能化的氯硅烷开始合成了聚合物前体，例如具有确定结构的聚硅氮烷。制备整体材料并在各种温度下进行热处理以引发结晶过程。除了非晶结构内的结构变化之外，在这种类型的材料中还经常观察到表面结晶。热力学论据可用于合理化表面结晶，从三元体系向二元体系的转变是重要的因素。

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《Key Engineering Materials》 |1999年第1999期|107-110|共4页
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D. Suttor; H.-J. Kleebe; S. Trassi;
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Thermodynamics and Stability of Polymer-Derived Materials

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