幕墙用硅酮结构MS密封胶老化后强度的要求

发布时间 : 2024-5-10 11:23:20
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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.

幕墙用硅酮结构MS密封胶老化后强度的要求

(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 : 2024-5-10 11:23:20
Views:

老化试验参照标准ASTM的规定进行，每12h为一个试验循环周期，包括紫外线辐照8h，其中黑板温度为(6013)℃;冷凝水4h，其中黑板温度为(50士3)℃。老化时间分别为300 h,1 000 h,3 000 h,4 000 h和5 000 h，每一编号MS密封胶样品各取出1组试件进行试验。

拉伸粘结性试验按照GB 16776-2005的规定进行，测量每个试样的长宽高，以5 mm/min的速度将试样拉伸至破坏，得到最大粘结强度和最大粘结强度时的伸长率(取5个试样的平均值)。

粘结拉伸强度变化

4种单组分硅酮结构MS密封胶试样的最大粘结强度随老化时间的变化趋势见如图2所示，4种单组分硅酮结构MS密封胶试样经5 000 h人工加速老化试验后，粘结强度均)0.45MPa，满足标准GB 16776-2005对幕墙用硅酮结构MS密封胶老化后强度的要求。1",30,5",7MS密封胶老化后的粘结强度值较初始值分别下降了约28% ,30% ,22% , 32%，其中1",3"试样粘结强度随老化时间延长呈线性下降，而5#,7试样在老化初期粘结强度下降较快，3 000 h后粘结强度趋于平缓。随老化时间的延长，4种单组分硅酮结构MS密封胶粘结强度变化规律稍有不同，但都呈下降趋势。http://www.sdyuantai.com/

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上一篇: GY-230厌氧MS密封胶易流淌以致对发动机油漆表面附着力下降的问题

下一篇: 双组分硅酮结构丁基防水嵌缝密封胶粘结强度的变化趋势