Thermoset adhesive, automotive component using thermoset adhesive, and method of manufacturing same
Assignee3M Innovative Properties Company
InventorKengo Imamura
Life of this patent
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Abstract
A thermoset adhesive for bonding two materials having different linear expansion coefficients with reduced warping and without spaces being formed therebetween. The thermoset adhesive of the present invention comprises an epoxy resin, a core-shell rubber, thermally expansive microparticles, and a curing agent. The thermally expansive microparticles can have at least one or any combination of an average particle size of from 9 to 19 μm, an expansion initiation temperature of from 70 to 100° C., and a maximum expansion temperature of from 110 to 135° C.
Claims20
A component comprising:
- a first plate-shaped member,
- a second plate-shaped member, and
- a cured thermoset adhesive disposed between the first plate-shaped member and the second plate-shaped member and bonding together the first plate-shaped member and the second plate-shaped member,
- wherein the first plate-shaped member has a linear expansion coefficient different from a linear expansion coefficient of the second plate-shaped member, and the thermoset adhesive comprises an epoxy resin, a core-shell rubber, thermally expansive microparticles, and a hardening agent, with the thermally expansive microparticles having an average particle size of from 9 to 19 μm, an expansion initiation temperature of from 70 to 100° C., and a maximum expansion temperature of from 110 to 135° C.
A thermoset adhesive comprising an epoxy resin, a core-shell rubber, thermally expansive microparticles, and a hardening agent, with the thermally expansive microparticles having an average particle size of from 9 to 19 μm, an expansion initiation temperature of from 70 to 100° C., and a maximum expansion temperature of from 110 to 135° C.,
- wherein the thermoset adhesive has a heat generation initiation temperature of 150° C. or less, and a maximum heat generation temperature of 155° C. or less, when differential scanning calorimetry is performed at a temperature gradient of 10° C./minute.
Dependencies are inferred from the claim text.