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首页> 外文期刊>Journal of Applied Polymer Science >Structural Analysis During Creep Process of Ultrahigh-Strength Polyethylene Fiber
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Structural Analysis During Creep Process of Ultrahigh-Strength Polyethylene Fiber

机译：超高强度聚乙烯纤维蠕变过程中的结构分析

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摘要

Structural changes during the creep process of ultrahigh-strength polyethylene fiber (UHSPE) were investigated using X-ray and the solid-state NMR techniques.As the creep strain increases,the quantity of the amorphous phase area estimated by the ~(13)C-NMR method increases until the final creep rupture.On the other hand,the amorphous quantity estimated by the X-ray method does not change noticeably.To explain this contrast ,we proposed a new model that illustrates how the defects such as chain ends incorporated into the crystalline phase are excluded from the crystallite and agglomerate to generate a new amorphous area,which has a size hardly detected by the X-ray method.These small amorphous areas are considered to cause a decrease in the tensile strength and the successive final creep rupture.
机译：利用X射线和固态NMR技术研究了超高强度聚乙烯纤维（UHSPE）蠕变过程中的结构变化。随着蠕变应变的增加，〜（13）C估计非晶相面积的数量-NMR方法不断增加直到最终蠕变破裂。另一方面，通过X射线方法估算出的非晶态量没有明显变化。为解释这种对比，我们提出了一个新模型来说明链端等缺陷是如何被纳入的进入结晶相的晶体被排除在微晶外并形成一个新的无定形区域，该区域的尺寸很难用X射线法检测到。这些小的无定形区域被认为会导致抗拉强度的下降和最终的蠕变。破裂。

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