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    SEALING MATERIAL AND METHOD OF FOAMING APPLICATION THEREOF
    1.
    发明公开
    SEALING MATERIAL AND METHOD OF FOAMING APPLICATION THEREOF 有权
    维多利亚州民政事务总署

    公开(公告)号：EP2368958A1

    公开(公告)日：2011-09-28

    申请号：EP08878139.8

    申请日：2008-11-14

    申请人： Nitta Gelatin Inc.

    发明人： SEKITA, Kazuyoshi ,  NAKATANI, Hiroyuki ,  UENO, Seiki

    IPC分类号： C09K3/10

    CPC分类号： C09D133/08 ,  B29D99/0053 ,  C04B41/009 ,  C04B41/483 ,  C04B41/63 ,  C08J9/122 ,  C08J2201/026 ,  C08J2203/06 ,  C08J2333/06 ,  C09K3/10 ,  C09K2003/1062 ,  C09K2200/0625 ,  C04B41/0045 ,  C04B41/4582 ,  C04B28/02

    摘要： Abstract: A sealing material which does not sag after application and shows excellent sealing performance even under severe high-temperature conditions. Even when used with foaming, the sealing material can form satisfactory closed cells therein. Also provided is a method of foaming application of the sealing material. The sealing material is characterized by comprising an ultraviolet-curable ingredient and an ultraviolet-polymerizable initiator, the content of any thermoplastic elastomer not curable with ultraviolet in the material being 5 wt.% or lower. It is further characterized in that the ultraviolet-curable ingredient comprises an acrylate which gives an ultraviolet-cured polymer having a glass transition temperature and a weight-average molecular weight in respective certain ranges, and that the sealing material has a melt viscosity at 120°C in a certain range. The method of sealing-material foaming application is characterized by thermally melting the sealing material, incorporating nitrogen gas into the molten sealing material at a given elevated pressure, ejecting the mixture in the air at a given pressure and applying it to an area needing sealing while foaming the mixture to thereby form a sealing foam, and curing the foam with ultraviolet.

    摘要翻译： 摘要：一种密封材料，即使在苛刻的高温条件下也不会下垂，并且密封性能优异。 即使使用发泡时，密封材料也可以在其中形成令人满意的闭孔。 还提供了一种使密封材料发泡的方法。 密封材料的特征在于包含紫外线固化成分和紫外线聚合引发剂，所述材料中不能用紫外线固化的任何热塑性弹性体的含量为5重量％以下。 其特征还在于，紫外线固化性成分包含丙烯酸酯，其赋予玻璃化转变温度和重均分子量在一定范围内的紫外线固化型聚合物，密封材料的熔融粘度为120° C在一定范围内。 密封材料发泡应用的方法的特征在于将密封材料热熔化，在给定的高压下将氮气引入熔融密封材料中，在给定压力下将混合物喷射到空气中并将其施加到需要密封的区域，同时 使混合物发泡，从而形成密封泡沫，并用紫外线固化泡沫。