聚乙烯青岛海洋大气环境腐蚀老化预测研究

doi:10.11902/1005.4537.2021.318

中国腐蚀与防护学报

2022, Vol. 42

Issue (6): 1070-1074 DOI: 10.11902/1005.4537.2021.318

研究报告

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聚乙烯青岛海洋大气环境腐蚀老化预测研究

丁康康, 刘少通(

), 郭为民, 苗依纯, 张彭辉, 程文华, 侯健

中国船舶重工集团公司第七二五研究所海洋腐蚀与防护重点实验室青岛 266237

Prediction for Corrosion Aging of Polyethylene in Marine Atmospheric Environment of Qingdao

DING Kangkang, LIU Shaotong(

), GUO Weimin, MIAO Yichun, ZHANG Penghui, CHENG Wenhua, HOU Jian

State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China

引用本文:

丁康康, 刘少通, 郭为民, 苗依纯, 张彭辉, 程文华, 侯健. 聚乙烯青岛海洋大气环境腐蚀老化预测研究[J]. 中国腐蚀与防护学报, 2022, 42(6): 1070-1074.
Kangkang DING, Shaotong LIU, Weimin GUO, Yichun MIAO, Penghui ZHANG, Wenhua CHENG, Jian HOU. Prediction for Corrosion Aging of Polyethylene in Marine Atmospheric Environment of Qingdao[J]. Journal of Chinese Society for Corrosion and protection, 2022, 42(6): 1070-1074.

全文: PDF(1698 KB) HTML

摘要:

针对复合材料在自然环境老化因环境因素复杂导致预测困难的问题,选取复合材料基材聚乙烯为研究对象,在青岛海洋大气环境下开展了3、6、9、12、15、18和24个月的自然暴晒试验,基于拉伸和弯曲力学性能演变数据,考虑环境因素的综合影响作用,分别建立了以辐射量为自变量的自然风化模型和以老化时间为自变量的多因素叠加模型。结果表明,聚乙烯在青岛海洋大气环境下,拉伸性能、弯曲性能等力学指标随老化时间和总辐照量均呈下降趋势,24个月暴晒能够造成其表面微裂纹损伤。自然风化模型预测对聚乙烯拉伸性能和弯曲性能预测误差小于11.20%,而多因素叠加模型则小于3.07%,预测精度更高。

关键词 ：海洋大气, 聚乙烯, 腐蚀老化, 力学性能, 预测模型

Abstract：

In order to solve the difficulty related to the prediction for the aging behavior of composites in natural environment with the complexity of environmental factors, polyethylene was chosen as composite matrix, and subjected to natural exposure test in the marine atmospheric environment of Qingdao area for 3, 6, 9, 12, 15, 18 and 24 months. Thereafter, based on the evolution of tensile and bending mechanical properties of the exposed polyethylene, by taking the consideration of the comprehensive influence of environmental factors into consideration, the natural weathering model with the radiation quantity as independent variable and the multi-factor superposition model with aging time as independent variable were established respectively. The results show that the tensile mechanical properties and bending mechanical properties of polyethylene both decreased with aging time and total solar irradiation in the marine atmospheric environment of Qingdao area. After exposure for 24 months, damages with micro-cracks occurred on the surface. The prediction error of natural weathering model for tensile and bending mechanical properties of polyethylene was less than 11.20%, while that of multi-factor superposition model was less than 3.07%. Therefore, the multi-factor superposition model had a better prediction precision.

Key words： marine atmosphere polyethylene corrosion aging mechanical properties prediction model

收稿日期: 2021-11-08

ZTFLH:

TG172.3

作者简介: 丁康康,男,1990年生,硕士生,工程师

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https://www.jcscp.org/CN/10.11902/1005.4537.2021.318 或 https://www.jcscp.org/CN/Y2022/V42/I6/1070

图1 试验期间青岛试验站大气温度、湿度及日照辐射量数据

图2 聚乙烯随老化时间和辐射量力学性能变化

图3 聚乙烯暴露24个月微观老化形貌

图4 拉伸性能和弯曲性能自然风化模型

图5 拉伸性能多因素和弯曲性能多因素叠加模型

表1 聚乙烯自然风化与多因素叠加模型预测精度

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