幕墻用MS密封膠性能的現(xiàn)場檢測
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丁基防水嵌縫膠施涂在尺寸為100mmX25mmX4mm的PC試樣一端
- 發(fā)布時間 : 2025-4-12 17:18:38
- Views:
(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.
丁基防水嵌縫膠施涂在尺寸為100mmX25mmX4mm的PC試樣一端
(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(fā)布時間 : 2025-4-12 17:18:38
- Views:
Information
按照ISO21194:2019(E)制備茹附性能剝離試驗用試樣。在尺寸為30cmX15cm的PC表面制作丁基防水嵌縫膠條，膠條寬12mm，高5mm，長200mm。在制作膠條時，擠壓出的丁基防水嵌縫膠截面形狀應(yīng)為半圓形或三角形，黍占附于PC表面后使用刮刀壓膠，膠條在標準條件(溫度230C、相對濕度5000)下固化7d。使用壁紙刀沿卷起的膠條根部，以約45。斜向切至PC表面，同時用尖嘴鉗子夾緊膠條沿1300-1600方向往后卷，使膠條沿切口發(fā)生剝離，持續(xù)提高剝離力，直至出現(xiàn)擴展裂紋，如此重復(fù)操作，直至膠條完全剝離。在破壞過程中，每次卷起剝離的過程持續(xù)約3s，切口間距約為5mm。根據(jù)IS()10365:2022對試樣失效模式進行評價。
所示，將丁基防水嵌縫膠施涂在尺寸為100mmX25mmX4mm的PC試樣一端，涂膠長度12.5mm,涂膠寬度25mm，將另一相同尺寸PC試樣置于丁基防水嵌縫膠上方并擠壓至丁基防水嵌縫膠厚度為12mm，使用刮刀將側(cè)面擠壓出的丁基防水嵌縫膠刮凈，在標準條件下固化7d后，在CMT4304型拉伸試驗機上進行拉剪試驗，夾持段長37.5mm，拉伸速度18mm"min一1。根據(jù)IS()10365:2022對試樣失效模式進行評價。由表1可見:與未進行表面處理的PC相比，等離子處理后PC表面的水接觸角和乙二醇接觸角大幅減小，表面能大幅提高，其中表面能極性分量提高，但色散分量略有降低，PC表面潤濕性得到顯著改善，與文獻中關(guān)于等離子處理對2mm厚工業(yè)級PC表面潤濕性影響的研究結(jié)果較為一致，說明潤濕性的提升主要與表面能極性分量的增加有關(guān);砂紙打磨處理后水接觸角增大，PC表面表現(xiàn)出較強的疏水性，乙二醇接觸角減小，表面能大幅提高;底涂處理后水接觸角減小，表面親水性增強，表面能增長不明顯，但表面能極性分量增長了180%以上，表面潤濕性有所提升，由于底涂劑覆蓋在PC表面，此時的表面性能主要由固化后的底涂劑自身特性決定。http://ago-games.com/
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