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首页> 外文期刊>Journal of Applied Polymer Science >Durability in the Life Cycle of Polymer Composites
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Durability in the Life Cycle of Polymer Composites

机译：聚合物复合材料生命周期中的耐久性

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The effect of an interface structure and stress state on the long-termstrength of polymer composites is investigated and related to the adhesion between the polymer and the second phase. The approach specifically accounts for the previous life-cycle steps of teh material through the evolution of the size of teh reinforcement phase and of the interfacial internal stress state. PET/SiO_x multilayer films are used and found appropriate to tailor the interface interactions and introduce controlled compressive stresses in the interface region. Adhesion is characterized by means of micromechanical and thermodynamic complementary approaches. The long-term strength of PET multilayer composites aged below the glass transition temperature of the polymer is predicted from the failure mechanism of the interface. It is shown that reliable predictions require the knowledge of the evolution of the interface shear strength,interface internal stress, and particle size through the whole life-cycle of the composite.
机译：研究了界面结构和应力状态对聚合物复合材料长期强度的影响，并与聚合物与第二相之间的粘附性有关。该方法通过增强相的大小和界面内部应力状态的演变，专门考虑了材料的先前生命周期步骤。使用PET / SiO_x多层薄膜，发现适合于调整界面相互作用并在界面区域引入受控的压应力。附着力通过微机械和热力学互补方法来表征。从界面的破坏机理可以预测在聚合物的玻璃化转变温度以下老化的PET多层复合材料的长期强度。结果表明，可靠的预测需要了解复合材料整个生命周期中界面抗剪强度，界面内应力和粒径的演变情况。

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