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    Encapsulated structural adhesive
    5.
    发明授权
    Encapsulated structural adhesive 有权
    封装结构胶

    公开(公告)号：US07678847B2

    公开(公告)日：2010-03-16

    申请号：US11451833

    申请日：2006-06-13

    申请人： Nianxi Yan ,  Peggy Dorothy Sands ,  Sandra Jacqueline Guinebretiere

    发明人： Nianxi Yan ,  Peggy Dorothy Sands ,  Sandra Jacqueline Guinebretiere

    IPC分类号： C08K9/10 ,  B32B27/04

    CPC分类号： C08K9/10 ,  C09J4/00 ,  C09J11/00 ,  C09J133/04 ,  Y10S525/922 ,  Y10S525/939 ,  Y10T428/28 ,  Y10T428/2985

    摘要： The invention teaches an encapsulated curable adhesive composition especially adapted for use as a structural adhesive. The adhesive composition enables formation of a thin layer reactive composition of microcapsules and a two-part curative. The adhesive composition comprises a first population of microcapsules encasing a monomer and a first-part curative comprising an initiator. The adhesive composition further comprises a second-part curative. The second-part curative comprises an activator and a catalyst. At least the activator of the second-part curative is preferably encapsulated in a second population of microcapsules. The catalyst and the second population of microcapsules can be dispersed in a binder material, along with the first population of microcapsules. The first population of microcapsules contain encapsulated within the core a monomer having a Tg 35° C. or less and the first-part curative. The first population microcapsules contain encapsulated within the core a monomer having a Tg 35° C. or less along with the first-part curative. The encapsulated monomer and first-part curative constitute a blend which is a free flowing liquid having a viscosity of less than 500 Cp (milliPascal-second), and more preferably less than 10 Cp (milliPascal-second). The first population of microcapsules with first-part curative, and a second-part curative and second population of microcapsules are dispersed in a binder material. Reactive contact of the monomer and first-part curative with the second-part curative is affected by exuding the respective capsule contents into reactive contact through breakage of the microcapsules such as an interference fit of the substrate or substrates to which the composition is applied.

    摘要翻译： 本发明教导了一种特别适合用作结构粘合剂的包封的可固化粘合剂组合物。 粘合剂组合物能够形成微胶囊的薄层反应性组合物和两部分固化剂。 粘合剂组合物包含包含单体的第一组微胶囊和包含引发剂的第一部分固化剂。 粘合剂组合物还包含第二部分固化剂。 第二部分治疗剂包括活化剂和催化剂。 至少第二部分固化剂的活化剂优选包封在第二组微胶囊中。 催化剂和第二批微胶囊可以与第一批微胶囊一起分散在粘合剂材料中。 第一批微胶囊包含核心内的Tg为35℃或更低的单体和第一部分固化剂。 第一种群微胶囊包含在核心内的具有Tg为35℃或更低的第一部分固化剂的单体。 包封的单体和第一部分固化剂构成混合物，其是具有小于500cp（毫帕·秒）的粘度的自由流动的液体，更优选小于10CPp（毫帕·秒）。 具有第一部分固化剂的第一批微胶囊和第二部分固化剂和第二批微胶囊分散在粘合剂材料中。 单体和第一部分固化剂与第二部分固化剂的反应性接触受到通过微胶囊的破坏而渗出相应的胶囊内容物变成反应性接触的影响，例如施加组合物的基底或基底的过盈配合。