玻纤/乙烯基酯复合材料的制备及其盐雾腐蚀行为

复合材料科学与工程 ›› 2019, Vol. 0 ›› Issue (11): 95-99.

玻纤/乙烯基酯复合材料的制备及其盐雾腐蚀行为

瞿立¹, 康少付¹, 李进^1*, 程璇²

1.宁夏大学宁夏光伏材料重点实验室,银川 750021;
2.厦门大学福建省特种先进材料重点实验室,厦门 361005

收稿日期:2019-04-09 出版日期:2019-11-28 发布日期:2019-11-28
通讯作者: 李进(1964-),女,博士,教授,主要从事复合材料结构设计、制造、仿真以及光伏材料方面的研究,li-jin@163.com。
作者简介:瞿立(1994-),男,硕士,主要从事复合材料的制备工艺、性能测试及模拟仿真方面的研究。
基金资助:
福建省特种先进材料重点实验室资助课题,宁夏回族自治区重点研发项目(2018BDE02048)

PREPARATION AND SALT SPRAY ATMOSPHERIC CORROSION BEHAVIOR OF GLASS FIBER/VINYL ESTER COMPOSITES

QU Li¹, KANG Shao-fu¹, LI Jin^1*, CHENG Xuan²

1.Key Laboratory of Ningxia for Photovoltaic Materials, Ningxia University, Yinchuan 750021, China;
2.Key Laboratory of Fujian Province for Special Advanced Materials, Xiamen University, Xiamen 361005, China

Received:2019-04-09 Online:2019-11-28 Published:2019-11-28

摘要/Abstract

摘要： 我国新建的燃煤火力发电机组大多采用石灰石-湿法脱硫工艺,湿法烟气引起的盐雾腐蚀是导致火电厂烟囱内衬材料脱落的重要因素。本文基于真空辅助成型(VARTM)工艺低成本制造了玻纤/乙烯基酯复合材料,并在盐雾试验箱中分别腐蚀4 d、14 d、28 d和60 d,模拟其在自然盐雾环境下的力学性能变化,分析了复合材料的耐盐雾腐蚀性能,并采用SEM法分析微观机理和腐蚀前后试样表面形貌演化规律。结果表明,经过60 d的盐雾腐蚀,复合材料的力学性能均呈现出先增加后下降的趋势,在盐雾腐蚀60 d后,拉伸强度、弯曲强度、层间剪切强度分别下降了5.6%、12.71%、13.61%。微观形貌表征发现,盐雾腐蚀后树脂基体发生了膨胀开裂,在纤维-树脂界面处形成缺陷进而导致力学性能下降。

关键词: 内衬防腐, 复合材料, VARTM工艺, 盐雾腐蚀, 性能分析

Abstract: Limestone wet desulfurization has been mainstream during practical process of coal-fired generating units built in China. However, salt spray take a significant role in detachment of chimney lining materials caused by wet flue gas. In this paper, glass fiber/vinyl ester composites was fabricated based on the low-costing process of vacuum assisted molding (VARTM) process and its mechanical properties was investigated in natural salt spray environment simulated by salt spray testing chamber for 4 days, 14 days, 28 days and 60 days to evaluate corrosion resistance. Meanwhile, cross-reference of corrosion was observed with the help of SEM to reveal the microscopic mechanism and evolution law of surface morphology. The results show that the mechanical properties of the composites are increased and then decreased with the increase of the days of salt spray corrosion. After 60 days of salt spray corrosion, tensile strength, bending strength and interlaminar shear strength respectively decreased by 5.6%, 12.71% and 13.61%. The morphological characterization showed that the resin matrix exploded and cracked after salt spray corrosion, and defects were formed at the fiber-resin interface, which led to a decrease in mechanical properties.

Key words: lining anti-corrosive, composite material, VARTM process, salt spray corrosion, performance
analysis

中图分类号:

TB332

瞿立, 康少付, 李进, 程璇. 玻纤/乙烯基酯复合材料的制备及其盐雾腐蚀行为[J]. 复合材料科学与工程, 2019, 0(11): 95-99.

QU Li, KANG Shao-fu, LI Jin, CHENG Xuan. PREPARATION AND SALT SPRAY ATMOSPHERIC CORROSION BEHAVIOR OF GLASS FIBER/VINYL ESTER COMPOSITES[J]. Composites Science and Engineering, 2019, 0(11): 95-99.

参考文献

[1] 冯东东, 吴泽明, 杨洪, 等. 双马来(BMI)复合材料在烟囱防腐中的应用[J]. 中国涂料, 2015, 30(9): 21-24.
[2] 齐晓辉, 牛如清, 于洪海. 浅析火力发电厂湿法脱硫后烟囱腐蚀现状及防护[J]. 全面腐蚀控制, 2016, 30(6): 55-57.
[3] 欧阳自强. 广义复合材料在火电厂、烧结厂、焚烧厂、锅炉厂中特高温腐蚀领域的应用[J]. 玻璃钢/复合材料, 2012(1): 193-199.
[4] 欧阳明辉, 刘焕安, 叶际宣. 燃煤电厂烟气脱硫系统湿烟囱的腐蚀及防护[J]. 电力科技与环保, 2014, 30(5): 12-16.
[5] Zhang S H, Colin C, Amin H. Influence of fibre orientation on pultruded GFRP material properties [J]. Composite Structures, 2018, 204: 368-377.
[6] Zerbst U, Madia M, Vormwald M. Fatigue strength and fracture mechanics[J]. Procedia Structural Integrity, 2017(5): 745-752.
[7] 王晓宁. 紫外、高低温老化对玻纤增强复合材料性能的影响[D]. 乌鲁木齐: 新疆大学, 2017.
[8] 李柏松, 王继辉, 邓京兰. 真空辅助RTM成型技术的研究[J]. 玻璃钢/复合材料, 2001(1): 17-19.
[9] Akif Y, Murat S, Cengiz A. Fabrication of high quality composite laminates by pressurized and heated-VARTM[J]. Composites Part A: Applied Science and Manufacturing, 2017, 102: 336-346.
[10] Mehrad A, Maya P, Cengiz A. Fabricating high-quality VARTM laminates by magnetic consolidation: experiments and process model[J]. Composites Part A: Applied Science and Manufacturing, 2018, 114: 398-406.
[11] Pelia R, Seferis J C, Karaki T, et al. Effects of nanoclay on the thermal and rheological properties of a VARTM epoxy resin[J]. Journal of Thermal Analysis & Calorimetry, 2009, 96(2): 587-592.
[12] Liao K, Schultheisz C R, Hunston D L. Effects of environmental aging on the properties of pultruded GFRP[J]. Composites Part B Engineering, 1999, 30(5): 485-493.
[13] Walczyk D, Kuppers J. Thermal press curing of advanced thermoset composite laminate parts[J]. Compos Part A: Appl Sci Manuf, 2012, 43(4): 635-646.
[14] 张婷. 复合材料的耐腐蚀、耐老化研究[D]. 武汉: 武汉理工大学, 2012.
[15] Narasimha Murthy H N, Sreejith M, Krishna M, et al. Seawater durability of epoxy/vinyl ester reinforced with glass/carbon composites[J]. Journal of Reinforced Plastics and Composites, 2010, 29(10): 1491-1499.
[16] Kootsookos A, Mouritz A P. Seawater durability of glass- and carbon-polymer composites[J]. Composites Science and Technology, 2004, 64(10-11): 1503-1511.
[17] 中国人民解放军总装备部电子信息基础部. 军用装备实验室环境试验方法第11部分: 盐雾试验: GJB 150.11A—2009[S]. 北京: 中国标准出版社, 2009.
[18] 全国文献工作标准化技术委员会. 纤维增强塑料拉伸性能试验方法: GB/T 1447—2005[S]. 北京: 中国标准出版社, 2005.
[19] 全国文献工作标准化技术委员会. 纤维增强塑料弯曲性能试验方法: GB/T 1449—2005[S]. 北京: 中国标准出版社, 2005.
[20] American Society for Testing Materials. Standard test method for short beam strength of polymer matrix composite materials and their laminates: ASTM D2344[S]. West Conshohocken: ASTM International, 2016.