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鋁板密封失效的常見原因是怎樣的?

來源:http://www.kangyanghua.com/ 發布時間:2022-03-29

  近年來,越來越多的鋁幕墻大面積使用,密封失效也越來越多。鋁板密封失效的危險在于幕墻滲漏容易損壞建筑物內部,腐蝕幕墻錨固件,影響建筑物的安全。同時,密封失效會增加建筑物的能耗。在這里,我們將分析鋁板密封失效的常見原因,并找到有效的解決方案。
  In recent years, more and more aluminum curtain walls are used in large areas, and there are more and more sealing failures. The danger of aluminum plate seal failure is that curtain wall leakage can easily damage the interior of the building, corrode the anchor parts of the curtain wall and affect the safety of the building. At the same time, seal failure increases the energy consumption of the building. Here, we will analyze common causes of aluminum plate seal failure and find effective solutions.
  經常發現鋁板的界面使用密封膠會出現裂縫,特別是季節變化,晝夜溫差特別大,溫度降低時板材收縮,這是由于過度密封膠的拉伸。
  It is often found that the interface of aluminum plate will crack when sealant is used, especially the seasonal change, the temperature difference between day and night is particularly large, and the plate shrinks when the temperature is reduced, which is due to the stretching of excessive sealant.
  這主要是因為密封膠的位移能力不符合實際要求。在選擇鋁板密封膠時,應首選硅酮密封膠,并應選擇質量有保證的產品。與其貪便宜,不如選擇含有大量“白油”的硅酮密封膠。
  This is mainly because the displacement capacity of sealant does not meet the actual requirements. In the selection of aluminum plate sealant, silicone sealant should be the first choice, and the quality of the product should be selected. Instead of being cheap, choose a silicone sealant that contains a lot of "white oil".
  一些不負責任的廠家甚至以此為賣點,因為“白油”價格便宜,可以讓新印刷的密封膠表面越來越亮。


  Some irresponsible manufacturers even use this as a selling point because "white oil" is cheap and can make the surface of newly printed sealant brighter and brighter.
  很多鋁板廠家對這種薄膜都比較重視,但是隨著白油逐漸蒸發,膠體本身就會變硬,容易破碎。使用硅酮密封膠時,還應注意產品的保質期。產品過期后,容易造成膠接處產生氣泡、性能下降或不固化。
  Many aluminum plate manufacturers pay more attention to this kind of film, but with the gradual evaporation of white oil, the colloid itself will become hard and easy to break. When using silicone sealant, we should also pay attention to the shelf life of the product. After the expiration of the product, it is easy to cause bubbles, performance decline or non-curing at the adhesive joint.
  為保證現場施工時密封膠與鋁板有良好的附著力,應選用附著力測試報告推薦的清洗劑進行清洗。醇溶劑可能無法有效去除聚酯粉末涂料中的污染物。
  In order to ensure good adhesion between sealant and aluminum plate during site construction, cleaning agent recommended by adhesion test report should be used for cleaning. Alcohol solvents may not be effective in removing contaminants from polyester powder coatings.
  使用兩步法清潔,使用白色、干凈、柔軟、吸水、不起毛的棉布,先用浸有溶劑的棉布擦拭,再用第二塊干凈的棉布填滿密封膠以緊密貼合整個界面與密封膠粘合的基板表面上。
  Use a two-step cleaning process, using a white, clean, soft, absorbent, non-fuzz cotton cloth, first with a solvent-soaked cotton cloth wipe, and then with a second piece of clean cotton cloth filled with sealant to tightly adhere to the entire interface and sealant bonded to the substrate surface.
  當然防水密封方式很多,結構防水,內部防水,打膠密封,不同的密封方式價格也不盡相同,選擇適合的密封方式用于工程中,保證幕墻的功能及外飾效果。您對此還有什么疑問嗎?如果有新的疑惑,您可能來http://www.kangyanghua.com網站向我們的客服人員。
  Of course, there are many waterproof sealing ways, including structural waterproof, internal waterproof and rubber sealing. The price of different sealing ways is not the same. Choose the appropriate sealing way for the project to ensure the function and exterior decoration effect of the curtain wall. Do you have any questions about that? If there are new questions, you may come to our http://www.kangyanghua.com customer service personnel.

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