Radical-polymerizable adhesive composition for laminating and bonding steel plates, adhesive laminate, motor, and method for manufacturing adhesive laminate

A method for manufacturing an adhesive laminate, comprising:

• applying a radical-polymerizable adhesive composition for laminating and bonding steel plates to a surface of a strip-shaped steel plate;
• and laminating electromagnetic steel plates with a press molding machine,
• wherein the radical-polymerizable adhesive composition for laminating and bonding steel plates comprises:
• component (A):
• a radical-polymerizable compound consisting of an epoxy (meth)acrylate, 2-hydroxyethyl methacrylate, and dimethylol tricyclodecane di(meth)acrylate, wherein a content of the dimethylol tricyclodecane di(meth)acrylate is in a range of more than 0 to 10 parts by mass, a content of the 2-hydroxyethyl methacrylate is in a range of 48 to 58 parts by mass, and a content of the epoxy (meth)acrylate is 42 parts by mass, with respect to a total amount of 100 parts by mass of the epoxy (meth)acrylate, the 2-hydroxyethyl methacrylate, and the dimethylol tricyclodecane di(meth)acrylate;
• component (B):
• a radical-polymerization initiator;
• component (C):
• 2-hydroxyethyl (meth)acrylate acid phosphate, wherein a content of the component (C) is 0.1 to 50 parts by mass with respect to 100 parts by mass of the component (A);
• and
• component (D) an anaerobic catalyst, wherein the anaerobic catalyst consists of at least one compound selected from the group consisting of saccharin, an amine compound, an azole compound, a mercaptan compound, and a hydrazine compound, and the mercaptan compound consists of at least one compound selected from the group consisting of n-dodecyl mercaptan, ethyl mercaptan, and butyl mercaptan, and
• the radical-polymerizable adhesive composition for laminating and bonding steel plates has a viscosity of 0.5 Pa·s or more and 15 Pa·s or less in a viscosity measurement, and the viscosity measurement is carried out as follows:
• 0.5 mL of the radical-polymerizable adhesive composition for laminating and bonding steel plates is sampled and discharged into a measuring cup;
• and
• a viscosity is measured with an elastohydrodynamic (EHD) viscometer in an environment of 25° C. under a condition of a shear rate of 76.6 [1/s].