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首页> 外文期刊>Journal of Applied Polymer Science >Durability of fiber-reinforced polyoxymethylene composites under the high hydrostatic pressure in the deep sea
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Durability of fiber-reinforced polyoxymethylene composites under the high hydrostatic pressure in the deep sea

机译：深海高静压压力下纤维增强聚氧亚甲基复合材料的耐久性

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摘要

The effect of hydrostatic pressure of up to 40 MPa on the seawater permeation, crystalline structure, and mechanical strength of carbon fiber and glass fiber-reinforced polyoxymethylene (POM) composites was investigated. The experimental results reveal that hydrostatic pressure slightly promotes seawater permeation throughout the POM composites and degrades the bonding strength of the matrix-fiber interface. In the POM matrix, the seawater hydrostatic pressure does not influence the chemical stability but induces a physical chain scission process, which is characterized by linearly decreased molecular weight. The chain scissions initially entangled in the amorphous region are supposed to have sufficient mobility to join the crystalline phase. The increased crystallinity, albeit slight, together with the compress effect of hydrostatic pressure may possibly account for the stable mechanical strengths of the POM composites. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48686.
机译：研究了高达40MPa对碳纤维和玻璃纤维增​​强聚氧亚甲基（POM）复合材料的海水渗透，晶体结构和机械强度的静水压力的影响。实验结果表明，静水压力略微促进整个POM复合材料的海水渗透，并降低了基质纤维界面的粘接强度。在POM矩阵中，海水静压压力不会影响化学稳定性，但诱导物理链裂殖过程，其特征在于线性降低的分子量。最初缠绕在非晶区域中的链条夹件应该具有足够的迁移率来加入结晶相。结晶度增加，尽管具有静压压力的压缩效果，但可能考虑了POM复合材料的稳定机械强度。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,137,48686。

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