硅烷改性聚氨酯密封膠注膠環境的原因及解決方案

發布時間 : 2025-5-13 10:38:15
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(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.

硅烷改性聚氨酯密封膠注膠環境的原因及解決方案

(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.

發布時間 : 2025-5-13 10:38:15
Views:

材料的原因及解決方案

由于實際施工過程中使用的材料(鋁材、玻璃、硅烷改性聚氨酯密封膠、清洗劑、底涂液等)批次很多，需要注意不同批次間可能存在差異。同時，施工現場的環境與進行粘接性試驗的實驗室環境也不盡相同。因此，在施工過程中，需要對每批次進廠的材料進行現場粘接性試驗。

另外，也需要注意與硅烷改性聚氨酯密封膠接觸的輔材，例如橡膠條、雙面膠貼、橡膠墊片等可能對粘接產生的影響。某些輔材可能含有過量的或者與硅烷改性聚氨酯密封膠不相容的增塑劑，可能滲入硅烷改性聚氨酯密封膠并導致硅烷改性聚氨酯密封膠變色、軟化以及脫粘等。因此，輔材也需要提前與硅烷改性聚氨酯密封膠進行粘接性和相容性測試。

硅烷改性聚氨酯密封膠注膠環境、養護環境的原因及解決方案

根據《玻璃幕墻工程技術規范》中第9章的規定，硅烷改性聚氨酯密封膠的硅烷改性聚氨酯密封膠注膠環境溫度、濕度條件應符合結構硅烷改性聚氨酯密封膠產品的規定。一般硅烷改性聚氨酯密封膠產品使用的環境要求為:溫度10 ℃-40 ℃,相對濕度40%-80%的清潔環境，下雨、下雪時不能施工。

如不在硅烷改性聚氨酯密封膠產品規定的施工環境下施工，則可能發生粘接問題。例如溫度過低時，硅烷改性聚氨酯密封膠與基材表面潤濕性降低，影響硅烷改性聚氨酯密封膠與基材的粘結性，如圖所示。

因此在實際施工時，應確保施工環境滿足硅烷改性聚氨酯密封膠品牌的要求。北方的冬季應有采暖，南方的夏季應有降溫措施，保證施工溫度在硅烷改性聚氨酯密封膠廠家要求的范圍之內。如用戶有特殊情況，需要在較低溫度環境下施工(如環境溫度稍低于10 ℃)，建議在使用前先進行小面積打膠試驗，并進行剝離粘結性試驗，確認硅烷改性聚氨酯密封膠固化、粘結良好，并視情況適當延長養護時間。http://www.www.sunsage.net/

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