硅烷改性聚氨酯密封膠的密封技術研究
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基材與硅烷改性聚氨酯密封膠不相容的原因主要
- 發布時間 : 2024-8-16 11:08:15
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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.
基材與硅烷改性聚氨酯密封膠不相容的原因主要
(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 : 2024-8-16 11:08:15
- Views:
Information
硅烷改性聚氨酯密封膠在使用中相比強度等其他物理性質，相容性更為重要“至吐目前為止，尚未發現任何正確安裝的結構性硅烷改性聚氨酯密封膠發生失敗”操作過程中。模擬試驗實際工程中。均未發生過失敗，這說明所使用膠的強度向來不是問題，其主要問題在于粘結性。因為硅烷改性聚氨酯密封膠有一個突出的特點，即如果膠和被粘結的基材不相容，即使粘結過程中，各種強度指標均達到要求，半年或稍長一點時間過后，硅烷改性聚氨酯密封膠便會開始變色變質成液體狀態，從而失去粘結能力，玻璃會落下來，造成嚴重后果，所以為確保硅烷改性聚氨酯密封膠粘結能力的長久，必須做相容性試驗。
(1)實際工程用基材，測定剝離粘結性，確定結構膠與基材的相容性
(2)結構膠粘結玻璃結構系統各種附件，經熱及紫外線老化處理后，考查試樣顏色變化，檢驗與玻璃!附件的粘結性，確定結構件與附件的相容性。
(3)試驗方法是一項實驗篩選過程。試驗后顏色和粘結性的改變是一項可用來確定材料相容性的關鍵，實踐已表明試驗那些粘結性喪失和褪色的基材和附件，在實際使用中也同樣會發生。
基材的剝離粘結性是保證工程質量的關鍵。
基材與硅烷改性聚氨酯密封膠不相容的原因主要如下:
①基材或硅烷改性聚氨酯密封膠本身的質量不符合相關要求;②清潔劑不合適，采用不同的清潔劑會有不同的相容性結果;③基材與硅烷改性聚氨酯密封膠都符合相關要求，仍可能不匹配，具有不相容性;④基材、硅烷改性聚氨酯密封膠由于生產批號的不同可能產生差異，為此相容性試驗要求采用實際工程所用批號的基材、硅烷改性聚氨酯密封膠，避免因與實際工程不一致產生偏差;⑤打膠現場的環境不符合規范要求產生的不相容性。http://www.inaodoi.com/
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