POLYVINYL ACETAL FILM WITH OUTSTANDING TRANSPARENCY AND RESISTANCE TO HEAT-CRACKING PHENOMENON
    1.
    发明公开
    POLYVINYL ACETAL FILM WITH OUTSTANDING TRANSPARENCY AND RESISTANCE TO HEAT-CRACKING PHENOMENON 有权
    聚乙烯吡咯烷酮麻醉药US ENDER ENDER ENDER EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN

    公开(公告)号:EP3029090A1

    公开(公告)日:2016-06-08

    申请号:EP13890566.6

    申请日:2013-07-31

    申请人: Kuraray Co., Ltd.

    IPC分类号: C08J5/18 C03C27/12 C08L29/14

    摘要: An object is to provide a polyvinyl acetal film which has excellent transparency and can suppress a thermal cracking phenomenon.
    The above object is achieved by providing a polyvinyl acetal film in which a ratio between a composite modulus (GPa) of the highest part in a convex part and a composite modulus (GPa) of the lowest part in a concave part on a surface of a film on a side in contact with glass, calculated by a nanoindentation measurement using a scanning probe microscope, is 0.90 or less, when a laminated glass is formed. In addition, the above object is achieved by providing a polyvinyl acetal film in which a ratio between a hardness (GPa) of the highest part in the convex part and a hardness (GPa) of the lowest part in the concave part, calculated by the SPM nanoindentation measurement, is 0.90 or less.

    摘要翻译: 本发明的目的是提供一种具有优异透明性并能抑制热裂纹现象的聚乙烯醇缩醛膜。 上述目的通过提供一种聚乙烯醇缩醛膜实现,其中凸部中最高部分的复合模量(GPa)与表面上的凹部中最低部分的复合模量(GPa)之比 通过使用扫描探针显微镜的纳米压痕测定计算的与玻璃接触的一侧的膜的厚度为0.90以下。 此外,上述目的通过提供一种聚乙烯醇缩醛膜来实现,其中凸部中最高部分的硬度(GPa)与凹部中最低部分的硬度(GPa)之比 SPM纳米压痕测量值为0.90以下。