硅酮结构密封胶拉伸粘接强度与耐疲劳及耐久性研究

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中图分类号：TQ436+.6 文献标志码：A 文章编号：1001-5922（2025）06-0005-03

Study on tensile bonding strength， fatigue resistance and durability of silicone structural sealant

QIN Yingzhi，ZHANG Jingxuan，YANG Xiaofei，ZHANG Yanhong，CHEN Jifang， YANG Xiuli，QI Beibei，SU Huifang （Zhengzhou Zhongyuan Silande High Technology Co.，Ltd.，Zhengzhou 450007，China）

Abstract：Silicone structural sealant is applied to the glass curtain wall plate of high-rise and super high-rise build⁃ ings，and the width of the glue seam of the larger plate exceeds the design requirements of JGJ102 specification. In the case of constant safety factor，it is necessary to consider the aging resistance and durability of silicone structural sealant to improve the maximum tensile strength and improve the design strength to reduce the feasibility of the ad⁃ hesive layer width scheme. In this paper，the durability of structural adhesives was verified by stress cycle fatigue test. Six kinds of silicone structural sealants with maximum tensile bonding strength and elongation at maximum ten⁃ sile bonding strength were selected for fatigue cycle test. The fatigue resistance of silicone structural sealants with different tensile bonding strength，different frequencies and different design strengths was studied. The research shows that the design strength is the key factor affecting the fatigue resistance of structural adhesive. There is no di⁃ rect correspondence between the maximum tensile bonding strength and the fatigue design strength. Increasing the maximum tensile bonding strength is not equivalent to increasing the design strength value. Frequency is not the main factor affecting fatigue life.

Key words：silicone structural sealant；maximum tensile bonding strength；design strength value；fatigue resistance

硅酮结构密封胶粘接玻璃与副框，承受风荷载、重力荷载以及温差效应、地震、雪作用等引起的荷载[1-2]，在幕墙单元板块中起着至关重要的作用[3-6]。（剩余4239字）