Multi-Scale Model for the Aging Performance of Particle-Filled Polymer Composites.

Multi-Scale Model for the Aging Performance of Particle-Filled Polymer Composites.
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颗粒填充聚合物复合材料老化性能的多尺度模型。

DOI:
10.3390/polym15153158
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发表时间:
2023-07-25
期刊:
影响因子:
5
通讯作者:
Du J
Du J
中科院分区:
工程技术3区
文献类型:
--
作者:
Fang C;Wang H;Zhang Y;Zhang M;Shen T;Du J

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在这项研究中,我们开发了一个新的多尺度模型来预测颗粒填充聚合物复合材料(PFPC)在热氧老化条件下的老化性能。为了研究其老化行为,结合宏观和微观表征,进行了高温加速老化试验。在微观水平上,利用聚合物氧化的闭环链反应计算了聚合物基质的交联度。此外,还利用聚合物物理理论确定了交联度与弹性模量之间的关系。从宏观层面分析了弹性模量值与去湿应变之间的关系。在观察和分析的基础上,建立了预测全氟碳化物老化性能的多尺度模型。预测结果与试验结果吻合较好,验证了模型的可靠性。
In this study, we developed a novel multi-scale model to predict the aging performance of particle-filled polymer composites (PFPCs) under thermo-oxidative aging conditions. To investigate the aging behavior, high-temperature accelerated aging tests were conducted in combination with macroscopic and microscopic characterization. At the microscopic level, the crosslinking density of the polymer matrix is calculated using the closed-loop chain reaction of polymer oxidation. In addition, the theory of polymer physics was used to determine the relationship between crosslinking density and elastic modulus. Relationships between elastic modulus and dewetting strain were analyzed at the macroscopic level. Based on the observations and analyses, a multi-scale model was developed to predict the aging performance of PFPCs. The predicted results show good agreement with the test results, which verifies the reliability of the model.
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发表时间: 1994-01-01
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