Durability test study of laminated specimens for large glass fiber protective structures in seawater

IF 2.1 4区地球科学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Sea Research Pub Date : 2024-07-25 DOI:10.1016/j.seares.2024.102521

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引用次数: 0

Abstract

The mechanical properties of glass fiber composite structures prepared by vacuum forming manufacturing process are influenced by various factors and have a certain degree of dispersion, resulting in unclear durability characteristics when applied in corrosive seawater engineering. Firstly, a variety of resin materials for underwater protective structures are tested for seawater degradation, and excellent resins that can still ensure the structural load-bearing capacity and stability after immersion are selected. Secondly, based on relevant standards and specifications, the article conducted seawater immersion aging tests at room temperature and accelerated seawater immersion aging tests at 60°C on glass fiber specimens of 430 epoxy bisphenol vinyl resin and 1967 polycyclic pentadiene resin. Finally, the degradation characteristics of strength, modulus, and impact toughness of the specimens were obtained through a series of mechanical property tests, such as bending, compression, shear and impact, under different aging time periods in room temperature and 60°C seawaters, respectively. The article summarizes the differences in the durability and mechanical properties degradation of large glass fiber protective structures with different resins during seawater immersion.

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大型玻璃纤维防护结构层压试样在海水中的耐久性试验研究

真空成型制造工艺制备的玻璃纤维复合材料结构的力学性能受多种因素的影响，具有一定的分散性，导致其在腐蚀性海水工程中应用时耐久性能不明确。首先，对多种水下防护结构用树脂材料进行海水降解测试，筛选出浸泡后仍能保证结构承载力和稳定性的优良树脂。其次，文章依据相关标准和规范，对 430 环氧双酚乙烯树脂和 1967 多环戊二烯树脂的玻璃纤维试样进行了常温海水浸泡老化试验和 60°C 加速海水浸泡老化试验。最后，通过在室温和 60°C 海水中分别进行不同老化时间段的弯曲、压缩、剪切和冲击等一系列力学性能测试，获得了试样的强度、模量和冲击韧性等降解特性。文章总结了使用不同树脂的大型玻璃纤维防护结构在海水浸泡期间的耐久性和机械性能退化差异。

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来源期刊

Journal of Sea Research 地学-海洋学

CiteScore

3.20

自引率

5.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Sea Research is an international and multidisciplinary periodical on marine research, with an emphasis on the functioning of marine ecosystems in coastal and shelf seas, including intertidal, estuarine and brackish environments. As several subdisciplines add to this aim, manuscripts are welcome from the fields of marine biology, marine chemistry, marine sedimentology and physical oceanography, provided they add to the understanding of ecosystem processes.