EXPANDABLE STRUCTURAL ADHESIVE FILM FOR DISSIMILAR METAL BONDING
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United States of America Patent
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Issued Date -
Dec 15, 2022
app pub date -
Sep 23, 2020
filing date -
Sep 23, 2020
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Abstract
An expandable structural adhesive film for bonding metal parts. The adhesive film comprises at least one first epoxy compound; at least one epoxy curing agent; at least one blowing agent; at least one film-forming agent; and at least one impact modifier. The structural adhesive film exhibits an elongation at break of at least 300% according to tensile test DIN EN ISO 527 and a free expansion rate according to EN 2667-3 of at least 45%.
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