改性自流平硅酮密封胶材在戈壁机场跑道灌缝中的应用  

Application of modified self-leveling silicone sealant in the joint filling of runway at Gobi Airport

作　　者：赵文斌 ZHAO Wenbin(Gansu Airport Investment Management Co.,Ltd.,Lanzhou 730030,China)

机构地区：[1]甘肃省机场投资管理有限公司,甘肃兰州730030

出　　处：《粘接》2024年第12期50-53,共4页Adhesion

摘　　要：为有效提高混凝土道面接缝的寿命、弹性、耐候性,本试验在不同黏度复配聚硅氧烷基础上,制备一种自流平硅酮密封胶材料,并探究白炭黑添加量、甲基三丁酮肟基硅烷交联剂添加量对硅酮密封胶体系性能的影响,以及该密封胶材料在机场跑道砼灌缝修补的应用。结果表明,当白炭黑添加量为5%、交联剂添加量为6%时,自流平硅酮密封胶拥有良好的自流平性能和力学性能,此时自流平厚度为3.59 mm,自流平时间为116 s,拉伸强度为0.54 MPa,拉伸断裂伸长率为238%。所制备的自流平硅酮密封胶材料具有良好的性能,可用于戈壁机场跑道砼灌缝修补。In order to effectively improve the life,elasticity and weather resistance of concrete pavement joints,a self-leveling silicone sealant material was prepared on the basis of polysiloxane with different viscosities,and the effects of silica addition and methyltributanone oxime-silane crosslinker on the performance of silicone sealant system were explored,as well as the application of the sealant material in the concrete joint repair of airport runway.The results showed that when the amount of white carbon black added was 5%and the amount of crosslinking agent added was 6%,the self leveling silicone sealant had good self leveling and mechanical properties.At this time,the self leveling thickness was 3.59 mm,the self leveling time was 116 s,the tensile strength was 0.54 MPa,and the tensile elongation at break was 238%.The prepared self-leveling silicone sealant material has good performance and can be used for concrete joint repair of runway in Gobi Airport.

关 键 词：硅酮密封胶 白炭黑 交联剂 拉伸强度 拉伸断裂伸长率 

分 类 号：TQ436.6[化学工程]