大气环境中霉菌对氟碳彩涂板老化行为的影响
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摘要
目的通过对氟碳彩涂板在海南文昌和云南西双版纳大气环境中曝晒后的失效行为进行对比研究,探明霉菌因素对氟碳彩涂板老化行为的影响。方法 运用扫描电子显微镜(SEM)、电化学阻抗谱(EIS)以及傅里叶变换红外光谱(FT-IR)等分析手段,对不同周期涂层试样的表面形貌和防护性能进行了监测和分析,探究海南文昌和云南西双版纳两种不同环境室外自然曝晒下,氟碳涂层的老化失效和行为。结果 SEM照片表明,随着曝晒时间的增加,两个地区涂层试样均发生不同程度的老化,且西双版纳涂层试样表面出现明显的霉菌菌落附着。EIS结果表明,与文昌试样相比,西双版纳暴晒的涂层低频阻抗模值下降较快。FT-IR结果表明,西双版纳地区氟碳涂层老化的主要原因是涂层中的丙烯酸树脂在光照和真菌等微生物共同作用下发生分子链断裂。相比之下,在光照时间、辐射强度均高于西双版纳的情况下,文昌大气暴晒后的试样表现出较好的耐候性能。结论霉菌引起的微生物降解加速了涂层的光老化进程,使得西双版纳暴晒试样老化程度较大。
The work aims to compare the failure behavior of fluorocarbon coated plates after exposure in the atmospheric environment of Wenchang, Hainan and Xishuangbanna, Yunnan, and to explore the effects of mold on the aging behavior of fluorocarbon coated plates. The surface morphology and protective performance of coating samples during different periods were monitored and analyzed by scanning electron microscopy(SEM), electrochemical impedance spectroscopy(EIS), and Fourier transform infrared spectroscopy(FT-IR). The aging failure and behavior of fluorocarbon coatings under the outdoor exposure of two different environments, Wenchang, Hainan and Xishuangbanna, Yunnan were explored. The SEM photographs showed that with the increase of the exposure time, the coating samples in both areas had different degrees of aging, and the surface of coating samples in Xishuangbanna showed obvious mold colony attachment. The results of EIS showed that compared with the samples in Wenchang, the low frequency impedance modulus of coatings in Xishuangbanna decreased rapidly.FT-IR results showed that the aging of the fluorocarbon coating in Xishuangbanna was mainly caused by the molecular chain breakage of the acrylic resin in the coating under the combined action of light and fungi and other microorganisms. In contrast,under the condition that the illumination time and radiation intensity were all higher than those in Xishuangbanna, samples in Wenchang exhibited better weather ability after atmospheric exposure. Therefore, the microbial degradation caused by the mold accelerates the photo-aging process of the coating and causes the serious aging of the sample exposed in Xishuangbanna.
The work aims to compare the failure behavior of fluorocarbon coated plates after exposure in the atmospheric environment of Wenchang, Hainan and Xishuangbanna, Yunnan, and to explore the effects of mold on the aging behavior of fluorocarbon coated plates. The surface morphology and protective performance of coating samples during different periods were monitored and analyzed by scanning electron microscopy(SEM), electrochemical impedance spectroscopy(EIS), and Fourier transform infrared spectroscopy(FT-IR). The aging failure and behavior of fluorocarbon coatings under the outdoor exposure of two different environments, Wenchang, Hainan and Xishuangbanna, Yunnan were explored. The SEM photographs showed that with the increase of the exposure time, the coating samples in both areas had different degrees of aging, and the surface of coating samples in Xishuangbanna showed obvious mold colony attachment. The results of EIS showed that compared with the samples in Wenchang, the low frequency impedance modulus of coatings in Xishuangbanna decreased rapidly.FT-IR results showed that the aging of the fluorocarbon coating in Xishuangbanna was mainly caused by the molecular chain breakage of the acrylic resin in the coating under the combined action of light and fungi and other microorganisms. In contrast,under the condition that the illumination time and radiation intensity were all higher than those in Xishuangbanna, samples in Wenchang exhibited better weather ability after atmospheric exposure. Therefore, the microbial degradation caused by the mold accelerates the photo-aging process of the coating and causes the serious aging of the sample exposed in Xishuangbanna.
引文
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[20]黄宁.PVDF氟碳涂料的红外谱图解析及其组分分析[J].涂料工业,2003,33(12):45-48.HUANG Ning.Infrared spectrogram analysis of fluorocarbon coating and its component analysis[J].Paint&coatings industry,2003,33(12):45-48.
[21]徐小连,徐承明,陈义庆,等.耐划伤PVDF彩板的工艺研究[J].腐蚀科学与防护技术,2008,20(1):73-75.XU Xiao-lian,XU Cheng-ming,CHEN Yi-qing,et al.Production technology of anti-scratch PVDF prepainted steel sheet[J].Corrosion science and protection technology,2008,20(1):73-75.
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[23]杨瑞成,申鹏,穆元春,等.聚丙烯酸/蒙脱土/TiO2复合材料的紫外光降解[J].兰州理工大学学报,2010,36(3):18-21YANG Rui-cheng,SHEN Peng,MU Yuan-chun,et al.Ultraviolet degradation of composite polyacrylic acidmontmorillonite-TiO2[J].Journal of Lanzhou University of Technology,2010,36(3):18-21.
[24]LITTLE B,RAY R.Fungal influenced corrosion of metals in humid environments[J].Fungal influenced corrosion of metals in humid environments,1999,56:244-247.
[25]龙泉芝,熊云,刘晓,等.环境因素对枝孢霉菌生长特性的影响[J].后勤工程学院学报,2015,31(1):73.LONG Quan-zhi,XIONG Yun,LIU Xiao,et al.Effects of environmental factors on growth characteristics of amorpHotheca resinae[J].Journal of Logistical Engineering University,2015,31(1):73.
[26]HUNG C S,ZINGARELLI S,NADEAU L J.Carbon catabolite repression and Impranil polyurethane degradation in pseudomonas protegens strain Pf-5[J].Appl environ microbi,2016,82(20):6080-6090.
[27]夏越美,傅耘.电子产品常用有机涂层防霉特性研究[J].装备环境工程,2007,4(2):32-35.XIA Yue-mei,FU Yun.Mould proofing characteristic of common organic coatings in electronics[J].Equip environ eng,2007,4(2):32-35.
[2]WANG F J,LI C Q.PVDF surfaces with stable superhydrophobicity[J].Surface and coatings technology,2013,222(15):55-61.
[3]姜金叶,姚恒军.氟碳树脂与热塑性丙烯酸树脂在卷材涂料中的研究[J].化工管理,2016(2):145.JIANG Jin-ye,YAO Heng-jun.Study on fluorocarbon resin and thermoplastic acrylic resin in coil coatings[J].Chemical management,2016(2):145.
[4]PICCININI F,LEVIM E,TURRI S.Photoactive sol-gel hybrid coatings from modified fluorocarbon polymers and amorphous titania[J].Progress in organic coatings,201376(9):1265-1272.
[5]于雪艳,陈正涛,李旭朝,等.常温固化氟碳涂料耐老化性能研究[J].涂料工业,2014,44(2):21-27.YU Xue-yan,CHEN Zheng-tao,LI Xu-zhao,et al.Study on weather resistant performance of fluorocarbon coatings cured at room temperature[J].Paint&coatings industry,2014,44(2):21-27.
[6]MAZROUEI-SEBDANI Z,KHODDAMI A.Alkaline hydrolysis:A facile method to manufacture superhydrophobic polyester fabric by fluorocarbon coating[J].Progress in organic coatings,2011,72(4):638-646.
[7]DAGL B,AYDOGAN N.Fluorocarbon-hydrocarbon hybrid gold NPs synthesized by bulk exchange reactions and surface coatings of fluorocarbon coated gold NPs are increased[J].Colloids and surfaces A:Physicochemical and engineering aspects,2013,419(20):257-262.
[8]周学杰,张三平,萧以德,等.氟碳涂层在我国水环境中防腐性能研究[J].装备环境工程,2010,7(1):10-14.ZHOU Xue-jie,ZHANG San-ping,XIAO Yi-de,et al.Anti-corrosion properties of fluorocarbon coating system in water environment[J].Equip environ eng,2010,7(1):10-14.
[9]MIGKOVIC-STANKOVIC V B,DEFLORIAN F,BON-ORA P L,et al.A comparative study of the available electrochemical methods for the investigation of epoxy and fluoropolymer coatings deterioration[J].Progress in oraganic coatings,1994,24(1-4):253-262.
[10]曾文茹,李疏芬,周允基.聚甲基丙烯酸甲酯的热降解研究进展[J].高分子材料科学与工程,2003,19(3):12-16.ZENG Wen-ru,LI Shu-feng,ZHOU Yun-ji.Research progress in thermal degradation of polymethylmethacrylate[J].Polymeric materials science&engineering,2003,19(3):12-16.
[11]彭军,李欣,郑岩青,等.人工加速老化条件下丙烯酸树脂涂层宏观光学性能与微观结构的研究[J].合成材料老化与应用,2017,46(3):20-24.PENG Jun,LI Xin,ZHENG Yan-qing,et al.Study on macroscopic optical properties and microstructure of acrylic resin coating under artificial accelerated aging[J].Synthetic materials aging and application,2017,46(3):20-24.
[12]LEE J G,KIM S H.Structure development of PVDF/PMMA/Ti O2 composite film with casting conditions[J].Macromolecular reserarch,2011,19(1):72-78.
[13]YOSHIDA H.Structure formation of PVDF/PMMAblends studied simultaneous DSC/FT-IR measurement[J].Journal of thermal analysis,1997,49(1):101-105.
[14]姚娇娇,王庭慰,周明柱.聚偏氟乙烯/聚甲基丙烯酸甲酯共混物的老化性能[J].高分子材料科学与工程,2013,29(4):99-105.YAO Jiao-jiao,WANG Ting-wei,ZHOU Ming-zhu.Aging properties of polyvinylidene/polymethyl methacrylate blends[J].Polymer materials science&engineering,2013,29(4):99-105.
[15]VERONIC L,PIERRE B.Weathering resistance of opaque PVDF-arrylic coatings applied on wood substrates[J].Progress in oraganic coatings,2012,75(4):494-501.
[16]FRANCESCA C,PAMELA P,ROBERTA P.Bacterial and fungal deterioration of the milan cathedral marble treated with protective synthetic resins[J].Science of the total environment,2007,385(1-3):172-181.
[17]GU X,MICHAELS C A,NGUYEN D,et al.Surface and interfacial properties of PVDF/acrylic copolymer blends before and after UV exposure[J].Applied surface science,2006,252(14):5168-5181.
[18]PARK S H,AHN Y,JANG M,et al.Effects of methacrylate based amphiphilic block copolymer additives on ultra filtration PVDF membrane formation[J].Separation and purification technology,2018,202(31):34-44.
[19]邱文灿,杨旭东,丁辛,等.PVC膜材料的光氧老化性能[J].纺织学报,2010,31(12):33-36.QIU Wen-can,YANG Xu-dong,DING Xin,et al.Photo-oxidation of PVC-coated membrane material[J].Journal of textile research,2010,31(12):33-36.
[20]黄宁.PVDF氟碳涂料的红外谱图解析及其组分分析[J].涂料工业,2003,33(12):45-48.HUANG Ning.Infrared spectrogram analysis of fluorocarbon coating and its component analysis[J].Paint&coatings industry,2003,33(12):45-48.
[21]徐小连,徐承明,陈义庆,等.耐划伤PVDF彩板的工艺研究[J].腐蚀科学与防护技术,2008,20(1):73-75.XU Xiao-lian,XU Cheng-ming,CHEN Yi-qing,et al.Production technology of anti-scratch PVDF prepainted steel sheet[J].Corrosion science and protection technology,2008,20(1):73-75.
[22]ELASHMAWIl I S,HAKEEM N A.Effect of PMMAaddition on characterization and morphology of PVDF[J].Polymer engineering and science,2008,48(5):895-901.
[23]杨瑞成,申鹏,穆元春,等.聚丙烯酸/蒙脱土/TiO2复合材料的紫外光降解[J].兰州理工大学学报,2010,36(3):18-21YANG Rui-cheng,SHEN Peng,MU Yuan-chun,et al.Ultraviolet degradation of composite polyacrylic acidmontmorillonite-TiO2[J].Journal of Lanzhou University of Technology,2010,36(3):18-21.
[24]LITTLE B,RAY R.Fungal influenced corrosion of metals in humid environments[J].Fungal influenced corrosion of metals in humid environments,1999,56:244-247.
[25]龙泉芝,熊云,刘晓,等.环境因素对枝孢霉菌生长特性的影响[J].后勤工程学院学报,2015,31(1):73.LONG Quan-zhi,XIONG Yun,LIU Xiao,et al.Effects of environmental factors on growth characteristics of amorpHotheca resinae[J].Journal of Logistical Engineering University,2015,31(1):73.
[26]HUNG C S,ZINGARELLI S,NADEAU L J.Carbon catabolite repression and Impranil polyurethane degradation in pseudomonas protegens strain Pf-5[J].Appl environ microbi,2016,82(20):6080-6090.
[27]夏越美,傅耘.电子产品常用有机涂层防霉特性研究[J].装备环境工程,2007,4(2):32-35.XIA Yue-mei,FU Yun.Mould proofing characteristic of common organic coatings in electronics[J].Equip environ eng,2007,4(2):32-35.
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