施工环境对密封剂剥离强度影响研究

摘要

Objective To study effects of construction process environment on peel strength of sealant.Methods The orthogonal experiment was applied to study effects of sealant peel strength through four influencing factors including cleaning of surface to be sealed,thickness of sealant,mixing ratio of sealant and temperature and humidity environment of sealant construction,to find the primary and secondary relationships and influencing trends of influencing factors.Results According to the order from large to small,factors influencing peel strength of sealant were:the cleaning of surface to be sealed,thickness of sealant,temperature and humidity environment of sealant construction and mixing ratio of sealant.The peel strength was positively correlated with the degree of sealing of the surface to be sealed and the thickness of the sealant,and inversely related with the sealant temperature and humidity environment.Conclusion In the sealant construction process environmental norms,understanding impacts of environmental factors could improve the sealant peel strength effectively.%目的 研究密封剂的施工工艺环境对其剥离强度的影响.方法 采用正交实验法,分别从待密封表面清洗、密封剂厚度、密封剂混合比、密封剂施工温湿环境等4个影响因素研究对剥离强度的影响,找出影响因素的主次关系和各自影响趋势.结果 对密封剂剥离强度影响程度由大到小顺序依次为表面清洁度、涂覆厚度、温度/湿度、密封剂混合比.剥离强度与待密封表面清洗程度、密封剂厚度大小成正相关,与密封剂温/湿环境大小成反相关.结论 在密封剂施工工艺环境规范内,了解各环境因素的影响特点,能有效提高密封剂的剥离强度大小.