硅烷改性聚氨酯密封胶PH值测试

发布时间 : 2022-12-4 18:53:27
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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胶PH值测试

(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.

发布时间 : 2022-12-4 18:53:27
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将Q235和SPCC冷轧钢板除油十燥备用，在钢板表面涂上硅烷改性聚氨酯密封胶在室温下将钢板分别置于3%NaCI,1(>%硫酸、1ioNaOH溶液中浸泡，比较其耐化学介质渗透性能。耐中性盐雾腐蚀实验依据ASTM B117和GB/T1771-207《色漆和清漆耐中性盐雾性能的测定》进行实验。将涂有硅烷改性聚氨酯密封胶的干燥试片放人Q-Fog公司生产的CCT 61)1)盐雾箱中，将之前配好的质量浓度为5g/L的NaCI溶液倒人盐雾箱的试液槽rty开纯水仪、空气压缩机和盐雾箱，设定实验程序及实验f1寸间，分别在?4 h, 4H h, 72 h, 16f3 h取样，取样停机时IH7不超过30 min。

取出试板并用清洁的温水冲洗以除去试板表面上的实验溶液残留物，而后立即十燥试板、称重并检查试板表面的损坏现象，如气泡、锈蚀、开裂和剥落程度等。

根据GB/T 2423.3-21)6《电-r.电子产品环境试验第2部分:试验方法试验Cab:恒定湿热方法》进行恒定湿热实验，实验周期为25h，主要检查涂覆硅烷改性聚氨酯密封胶后金属样品的腐蚀情况，并拍照记录。实验条件:温度4℃，湿度3%。

取少量硅烷改性聚氨酯密封胶样品薄薄地涂抹在滨化钾晶片上，使用红外光谱仪分析样品的成分。

通过两种方法测试硅烷改性聚氨酯密封胶的pH值。第一种方法:用蘸水的pH试纸快速贴到刚刚挤出的硅烷改性聚氨酯密封胶上，通过颜色比对测试pH值。第二种方法:将长度约3mm的硅烷改性聚氨酯密封胶快速挤到15mL去离子水中，用玻璃棒搅拌2-3 min.使用pH计测量水溶液的pH值。www.sdyuantai.com

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