地熱水環境中PTFE/PPS復合涂層表面CaCO<sub>3</sub>垢成核行為

吳坤湖; 李衛平; 劉慧叢; 朱立群

doi:10.13374/j.issn1001-053x.2010.10.014

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地熱水環境中PTFE/PPS復合涂層表面CaCO₃垢成核行為

doi: 10.13374/j.issn1001-053x.2010.10.014

北京航空航天大學材料科學與工程學院空天材料與服役教育部重點實驗室, 北京 100191

基金項目:

國家高技術研究發展計劃資助項目(No.2007AA05Z441)

詳細信息

作者簡介:
吳坤湖(1983-),男,碩士研究生;朱立群(1955-),男,教授,博士生導師,E-mail:zhulq@buaa.edu.cn

中圖分類號: TB383
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- 文章訪問數: 180
- HTML全文瀏覽量: 53
- PDF下載量: 9
- 被引次數: 0
出版歷程
- 收稿日期: 2009-12-10

Nucleation behavior of CaCO₃ scale on the surface of PTFE/PPS composite coatings in geothermal water environments

Key Laboratory of Aerospace Materials and Performance(Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China

摘要

摘要: 采用掃描電子顯微鏡和能譜儀等測試方法研究了聚四氟乙烯(PTFE)/聚苯硫醚(PPS)復合涂層在靜態模擬地熱水環境中的阻垢性能,分析了PTFE/PPS涂層表面的微觀結構對CaCO₃垢成核行為的影響.結果表明:使用PTFE乳液摻雜PPS獲得的復合涂層的表面呈多孔結構,PTFE在涂層孔內外的分布不均導致CaCO₃垢晶核趨于在孔內和孔壁處優先形成和生長;PTFE/PPS涂層的接觸角隨著浸泡時間的延長而變小,表面結垢速度要明顯小于304不銹鋼和PPS涂層.
- 復合涂層 /
- 地熱水 /
- 結垢 /
- 表面能
Abstract: The anti-scale performance of polytetrafluoroethylene (PTFE)/polyphenylene sulfide (PPS) composite coatings was studied by scanning electron microscopy (SEM) and energy dispersion spectrometry (EDS). The effect of the surface microstructure of PTFE/PPS coatings on the nucleation behavior of CaCO₃ scale was analyzed. The results indicate that the surface microstructure of PTFE (latex)-blended PPS composite coatings is poriferous, and PTFE asymmetrically distributes inside and outside holes on the coating surface, inducing CaCO₃ scale to nucleate firstly on the hole inside and wall. The contact angle of PTFE/PPS coatings decreases with prolonging immersion time. The increasing rate of scaling on PTFE/PPS coatings is obviously less than that of 304 stainless steel and PPS coatings.
- composite coatings /
- geothermal water /
- scale /
- surface energy