本文關(guān)鍵詞： 金屬裝飾涂層 自然暴露試驗(yàn) 綜合加速老化試驗(yàn) 相關(guān)性　出處：《中國(guó)建筑材料科學(xué)研究總院》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：金屬裝飾涂層兼有裝飾性與保護(hù)性,在自然暴露使用過(guò)程中,受到環(huán)境因素影響逐漸老化,導(dǎo)致外觀及性能變化。因此,有必要開(kāi)展一系列的環(huán)境試驗(yàn)來(lái)評(píng)價(jià)金屬裝飾涂層在不同氣候環(huán)境條件下的耐久性。目前,評(píng)價(jià)涂層耐久性的試驗(yàn)主要有自然暴露試驗(yàn)和人工加速試驗(yàn)。自然暴露試驗(yàn)數(shù)據(jù)直觀可靠,但試驗(yàn)周期長(zhǎng),而現(xiàn)有的各類金屬裝飾涂層產(chǎn)品標(biāo)準(zhǔn)的耐久性評(píng)價(jià)方法多為單一的光老化或鹽霧腐蝕試驗(yàn),不能較好地模擬實(shí)際使用環(huán)境對(duì)涂層的影響。因此,需要尋找適當(dāng)?shù)木C合加速老化試驗(yàn)方法來(lái)模擬自然環(huán)境條件,為涂層耐久性評(píng)價(jià)提供合理的方法依據(jù)。本課題選擇常用的金屬裝飾涂層中耐久性最好的聚酯和氟碳2大體系共6種涂層作為試驗(yàn)對(duì)象,開(kāi)展了以瓊海為主,吐魯番、沈陽(yáng)為輔的三地自然暴露試驗(yàn),分析影響涂層老化的主要環(huán)境因素,結(jié)合氣象數(shù)據(jù),由此設(shè)計(jì)了3種“光老化+鹽霧”綜合加速老化試驗(yàn)方案,并以氙燈、紫外、鹽霧3種單一老化試驗(yàn)作對(duì)比,共6種人工加速老化腐蝕試驗(yàn)。從外觀形貌、色差、光澤度三個(gè)方面評(píng)價(jià)6種涂層經(jīng)室內(nèi)加速試驗(yàn)與瓊海自然暴露試驗(yàn)后的老化規(guī)律,并采用Spearman秩相關(guān)系數(shù)法分析室內(nèi)外試驗(yàn)的相關(guān)性,篩選與自然環(huán)境試驗(yàn)相關(guān)性最優(yōu)的人工加速老化試驗(yàn)方法。最后,采用拉曼光譜法分析涂層經(jīng)過(guò)優(yōu)選的人工加速試驗(yàn)后老化機(jī)理與自然環(huán)境試驗(yàn)后的老化機(jī)理是否一致。結(jié)果表明:涂層老化的主要形貌特征為變色和失光。高溫高濕、高輻照量、腐蝕性離子等環(huán)境因素相互影響、協(xié)同作用,加速涂層老化,而單一環(huán)境因素對(duì)涂層老化的影響較小。氙燈光老化試驗(yàn)的加速性最好,模擬性較差。鹽霧試驗(yàn)對(duì)涂層色差與光澤度值影響不大,加速性最差,外觀形貌也與自然暴露試驗(yàn)有較大差異,相關(guān)性較差。綜合加速老化試驗(yàn)與自然暴露試驗(yàn)結(jié)果的相關(guān)性均較好。6種涂層在綜合加速老化試驗(yàn)“7d氙燈+3d鹽霧”循環(huán)1的老化過(guò)程中,色差與光澤度變化趨勢(shì)與自然暴露試驗(yàn)結(jié)果一致,加速性較好;在色差方面,“7d氙燈+3d鹽霧”綜合加速老化循環(huán)與瓊海自然暴露試驗(yàn)相關(guān)性系數(shù)為0.83,相關(guān)性良好;聚酯涂層激光拉曼頻譜顯示,中紅外區(qū)涂層顏填料老化降解程度很高,室內(nèi)外試驗(yàn)老化機(jī)理一致。表明“7d氙燈+3d鹽霧”綜合加速老化試驗(yàn)方案可以作為評(píng)價(jià)金屬裝飾涂層耐久性的人工加速老化試驗(yàn)方法。
[Abstract]:Metal decorative coating has both decorative and protective properties. In the process of natural exposure, it is gradually aging due to environmental factors, resulting in changes in appearance and performance. It is necessary to carry out a series of environmental tests to evaluate the durability of metallic decorative coatings under different climatic and environmental conditions. The main tests to evaluate the durability of coating are natural exposure test and artificial accelerated test. The data of natural exposure test are intuitionistic and reliable, but the test period is long. However, most of the existing durability evaluation methods of metal decorative coating products are single light aging or salt spray corrosion test, which can not simulate the effect of actual application environment on the coating. It is necessary to find appropriate comprehensive accelerated aging test methods to simulate natural environment conditions. In this paper, 6 kinds of coatings with the best durability of polyester and fluorocarbon were selected as test objects, and Qionghai was the main test object. The natural exposure test in Turpan and Shenyang was carried out. The main environmental factors affecting the aging of coatings were analyzed. Combined with meteorological data, three comprehensive accelerated aging test schemes of "photoaging salt fog" were designed. Compared with xenon lamp, UV and salt spray, there are 6 kinds of artificial accelerated aging corrosion test. The ageing rule of 6 coatings after indoor accelerated test and Qionghai natural exposure test was evaluated from three aspects of glossiness, and the correlation between indoor and outdoor tests was analyzed by Spearman rank correlation coefficient method. Screening the best artificial accelerated aging test method related to natural environment test. Finally. Raman spectroscopy was used to analyze whether the aging mechanism of the coating was consistent with that of the natural environment after the selected artificial accelerated test. The results showed that the aging mechanism of the coating was the same as that of the natural environment test. The main morphologies of the coating are discoloration and loss of light, high temperature and high humidity. Environmental factors such as high irradiation amount corrosive ions and other environmental factors influence each other synergistically accelerate the aging of the coating while the single environmental factor has little effect on the aging of the coating. The acceleration of xenon lamp photoaging test is the best. Salt spray test has little effect on the color difference and glossiness value of the coating, and has the worst acceleration, and the appearance and appearance of the coating are different from those of the natural exposure test. The correlation between the results of comprehensive accelerated aging test and natural exposure test was better. 6 kinds of coatings were in the aging process of comprehensive accelerated aging test "7 days xenon lamp 3 d salt fog" cycle 1. The change trend of color aberration and gloss is consistent with the results of natural exposure test, and the acceleration is better. In terms of color difference, the correlation coefficient between the comprehensive accelerated aging cycle of 7 d xenon lamp and natural exposure test in Qionghai was 0.83, and the correlation was good. The laser Raman spectrum of polyester coating shows that the degradation degree of coating filler is very high in the middle infrared region. The results show that the comprehensive accelerated aging test scheme of "7d xenon lamp 3D salt spray" can be used as an artificial accelerated aging test method to evaluate the durability of metallic decorative coatings.
【學(xué)位授予單位】：中國(guó)建筑材料科學(xué)研究總院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG174.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 彭京川;郭贊洪;楊曉然;;多因素綜合海洋氣候自然加速試驗(yàn)技術(shù)相關(guān)性和加速性驗(yàn)證[J];裝備環(huán)境工程;2016年05期

2 鞏永忠;陶冶;任環(huán);趙純;;熱固性氟碳粉末涂料黃變和水紋原因與機(jī)理研究[J];涂料工業(yè);2016年03期

3 張洪彬;劉雅智;蔡汝山;高軍;;非金屬材料紫外光老化試驗(yàn)方法與標(biāo)準(zhǔn)研究[J];電子產(chǎn)品可靠性與環(huán)境試驗(yàn);2016年01期

4 J Quill;J Gauntner;S Fowler;J Regan;張恒;孫杏蕾;;綜合老化腐蝕試驗(yàn)[J];上海涂料;2015年05期

5 張洪彬;閆杰;王斗輝;王忠;;大氣暴露試驗(yàn)和模擬加速試驗(yàn)相關(guān)性研究[J];電子產(chǎn)品可靠性與環(huán)境試驗(yàn);2013年S1期

6 劉成臣;王浩偉;楊曉華;;不同材料在海洋大氣環(huán)境下的加速環(huán)境譜研究[J];裝備環(huán)境工程;2013年02期

7 余靜;王琳琦;王繼芬;武磊;;拉曼光譜技術(shù)在涂料鑒定中的應(yīng)用進(jìn)展[J];現(xiàn)代儀器;2012年03期

8 袁敏;王忠;;涂裝工藝組合/綜合環(huán)境試驗(yàn)技術(shù)綜述[J];環(huán)境技術(shù);2011年06期

9 王艷艷;宣衛(wèi)芳;王一臨;;實(shí)驗(yàn)室光源暴露試驗(yàn)與戶外環(huán)境試驗(yàn)相關(guān)性研究[J];裝備環(huán)境工程;2010年06期

10 尚建麗;王健;;紫外光對(duì)外飾面涂層老化的試驗(yàn)研究[J];西安建筑科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年05期

相關(guān)重要報(bào)紙文章 前1條

1 蔣荃;;建筑裝飾用金屬及金屬?gòu)?fù)合材料解析[N];中國(guó)建材報(bào);2015年

相關(guān)碩士學(xué)位論文 前1條

1 楊昊;雅礱江流域水電站金屬結(jié)構(gòu)防腐蝕涂層配套體系試驗(yàn)研究[D];機(jī)械科學(xué)研究總院;2008年

，

本文編號(hào)：1469027