涂覆中丁基防水嵌縫膠的樣品實驗前后均未發生腐蝕

發布時間 : 2022-12-4 18:59:37
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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.

涂覆中丁基防水嵌縫膠的樣品實驗前后均未發生腐蝕

(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 : 2022-12-4 18:59:37
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圖1是涂有丁基防水嵌縫膠的冷軋鋼板在室溫下浸泡于不同溶液中mh后的照片.從左至右依次是涂酸性丁基防水嵌縫膠SPCC冷軋鋼板、涂中險丁基防水嵌縫膠SPCC冷軋鋼板、涂酸性丁基防水嵌縫膠Q235冷軋鋼板、涂中性丁基防水嵌縫膠Q235冷軋鋼板。

從浸泡實驗結果r知:試樣在!()%硫酸中浸泡h后，介質F綠色，底部有黑色沉淀，試樣局部或全部呈黑褐色，所涂的丁基防水嵌縫膠已經剝離，可以整片取;試樣在3 % NaCI溶液中浸泡216 h后.介質呈褐色，底部有褐色沉淀，試樣出現局部腐蝕，腐蝕部位呈褐色;試樣在1t)0io NaOH溶液中浸泡216 h后，介質旱無色.底部有自色沉淀。

圖2是SPCC裸鋼與涂有丁基防水嵌縫膠的Q235, SPCC冷軋鋼板在3℃下5u g/L鹽水進行鹽霧腐蝕實驗()h, 24 h, 48 h, 72 h后的照片。

由ilFai一見:在2- h y. sPCC 鋼腐蝕非常嚴重，涂有丁基防水嵌縫膠的試樣基本完好:+ h后，涂有中性丁基防水嵌縫膠的試樣已經開始腐蝕.而涂有酸性丁基防水嵌縫膠的試樣基本完好:7? h后。涂有中性丁基防水嵌縫膠的試樣腐蝕更為嚴重，而涂有酸性丁基防水嵌縫膠的試樣發牛輕微的腐蝕對分別涂有和酸性、中丁基防水嵌縫膠的4種樣品進行?5o h的濕熱實驗.結果如。

山圖3可知:涂有酸陀丁基防水嵌縫膠的樣品實驗后腐蝕明顯，涂有酸性丁基防水嵌縫膠的個別樣實驗后出現局部腐蝕.涂覆中丁基防水嵌縫膠的樣品實驗前后均未發生腐蝕。對分別涂有和酸NI，丁基防水嵌縫膠的4種樣品進行紅外光譜測試。譜圖如圖4所不山圖4可得:酸性丁基防水嵌縫膠中幾乎看不到碳基峰，說明兒乎沒有檢測日酸類氣體.4種樣品主要成分均為硅酮類物質，該成分對金屬沒有腐蝕性。www.qiquanonline.com

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