公开(公告)号：US20210102101A1

公开(公告)日：2021-04-08

申请号：US16497552

申请日：2018-03-23

Applicant: CEMEDINE CO., LTD. ,  MAZDA MOTOR CORPORATION

Inventor： Daisuke MAKINO ,  Atsuhiko SUZUKI ,  Yusuke MURACHI ,  Motoyasu ASAKAWA ,  Katsuya HIMURO ,  Kenichi YAMAMOTO

IPC: C09J163/00 ,  C08G59/18 ,  C09J11/04 ,  C09J11/06 ,  C09J5/06 ,  B62D65/02 ,  C08K3/36 ,  C08K3/22

Abstract: Provided are a low-temperature heat-curable adhesive composition for structures which is able to cure at a low temperature in a short time, is reduced in groove defects after open-state standing, and is excellent in rust-preventive property, corrosion resistance, shower resistance, and workability; and a method for producing an automotive structure using the adhesive composition. The low-temperature heat-curable adhesive composition for structures includes (A) an epoxy resin, (B) a micro-encapsulated curing agent, (C) a hygroscopic agent, (D) a viscosity modifier, and (E) a stabilizer. The hygroscopic agent (C) is calcium oxide, which suitably includes both a surface-treated grade and a non-surface-treated grade.

公开(公告)号：US20190062611A1

公开(公告)日：2019-02-28

申请号：US16109917

申请日：2018-08-23

Applicant: Sunstar Engineering Inc. ,  Mazda Motor Corporation

Inventor： Takatomi NISHIDA ,  Shohei YANAGISAWA ,  Katsuya HIMURO ,  Kenichi YAMAMOTO ,  Motoyasu ASAKAWA ,  Tomoya YOSHIDA

IPC: C09J163/00 ,  C09J11/08

CPC classification number: C09J163/00 ,  C09J11/08 ,  C08L63/00

Abstract: The present invention provides a one-component type thermosetting adhesive composition used as an automotive structural adhesive having high damping performance without reducing adhesive strength and having excellent low-temperature curability and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied. The present invention relates to a one-component type thermosetting adhesive composition comprising an epoxy resin and an amine-based latent curing agent, wherein the epoxy resin comprises: (1) a dibasic acid ester-based epoxy resin, (2) a butadiene-acrylonitrile copolymer modified epoxy resin, and (3) an unmodified bisphenol A type epoxy resin, and wherein a thermally cured product formed from the composition has: a loss tangent tan δ at 23° C. of not less than 0.2 as a damping performance, and a Young's modulus of not less than 50 MPa, and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied.

公开(公告)号：US20160325785A1

公开(公告)日：2016-11-10

申请号：US15110041

申请日：2015-01-30

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kohya NAKAGAWA ,  Kuniaki NAGAO ,  Kenichi YAMAMOTO ,  Motoyasu ASAKAWA ,  Katsuya HIMURO

IPC: B62D25/02 ,  F16F1/36 ,  F16F15/08 ,  B62D27/02

CPC classification number: B62D25/025 ,  B62D25/2036 ,  B62D27/02 ,  F16F1/3605 ,  F16F15/08

Abstract: A reinforcing body is disposed in a closed cross sectional portion constituted by one or more vehicle body components. The reinforcing body is provided with a joining portion to be joined to the vehicle body components. The joining portion includes hard connecting portions connected to the vehicle body components in an abutting state, and a soft connecting portion connected to the vehicle body components via a vibration damping member. The storage shear rigidity (KB′) of the vibration damping member is set in the range: 800 N/mm

Abstract translation: 加强体设置在由一个或多个车体部件构成的封闭截面部分中。 加强体设置有与车身部件接合的接合部。 接合部分包括在邻接状态下连接到车身部件的硬连接部分，以及经由振动阻尼部件连接到车身部件的软连接部分。 减震构件的储能剪切刚度（KB'）设定在800N / mm