An adhesive having water vapor barrier properties, comprising an adhesive base comprised of
at least one epoxy syrup
at least one elastomer
at least one initiator
optionally at least one tackifier resin and
optionally at least one further reactive resin and
optionally a solvent,
wherein the adhesive base without solvent has a water vapor permeation rate after activation of the reactive resin component of less than 100 g/m2d, preferably of less than 60 g/m2d, in particular less than 30 g/m2d, wherein the epoxy syrup comprises bisepoxy monomers and high molecular weight uncrosslinked polyepoxies produced therefrom, exhibits good barrier properties and is also sufficiently pressure sensitive to achieve easy handleability.
一种具有
水蒸气阻隔性能的粘合剂,包括由以下成分组成的粘合剂基材
至少一种环氧糖浆
至少一种弹性体
至少一种
引发剂
至少一种增粘
树脂
另可选择至少一种活性
树脂和
溶剂、
其中,不含溶剂的粘合剂基料在活化反应性
树脂组分后的
水蒸气渗透率小于 100 克/平方米日,最好小于 60 克/平方米日,特别是小于 30 克/平方米日,其中环氧糖浆包括双环氧单体和由其产生的高分子量未交联聚环氧,具有良好的阻隔性能,并且具有足够的压力敏感性,易于处理。