To provide a one-component type thermosetting adhesive composition which has high attenuation properties without degrading adhesive strength, is excellent in low temperature curability, and is used for a structure adhesive for an automobile, and to provide a car body structure of a vehicle formed by applying the adhesive composition.SOLUTION: There are provided a one-component type thermosetting adhesive composition containing an epoxy resin and an amine-based latent curing agent, where the epoxy resin contains (1) a dibasic acid ester-based epoxy resin, (2) a butadiene-acrylonitrile copolymer modified epoxy resin and (3) a non-modified bisphenol A type epoxy resin, where a thermosetting product of the composition satisfies a loss tangent tanδ≥0.2 and a Young's modulus≥50 MPa as attenuation performance at 23°C; and a car body structure of a vehicle formed by applying the adhesive composition.SELECTED DRAWING: None
【課題】本発明により、接着強度を低下することなく高減衰性を有し、低温硬化性に優れた、自動車用構造接着剤として用いられる一液型熱硬化性接着剤組成物及び該接着剤組成物が塗布されてなる車両の車体構造を提供する。【解決手段】本発明は、エポキシ樹脂およびアミン系潜在性硬化剤を含む一液型熱硬化性接着剤組成物であって、該エポキシ樹脂が、(1)二塩基酸エステル系エポキシ樹脂、(2)ブタジエン‐アクリロニトリル共重合体変性エポキシ樹脂、および(3)未変性ビスフェノールA型エポキシ樹脂を含み、該組成物の熱硬化物が、23℃における減衰性能として、損失正接tanδ≧0.2、かつヤング率≧50MPaを満足する、一液型熱硬化性接着剤組成物及び該接着剤組成物が塗布されてなる車両の車体構造に関する。【選択図】なし
ONE-COMPONENT TYPE THERMOSETTING ADHESIVE COMPOSITION AND CAR BODY STRUCTURE OF VEHICLE FORMED BY APPLYING ADHESIVE COMPOSITION
一液型熱硬化性接着剤組成物及び該接着剤組成物が塗布されてなる車両の車体構造
2019-03-14
Patent
Electronic Resource
Japanese
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