Deformation detection sensor and production of the same
AssigneeToyo Tire & Rubber Co., Ltd.
InventorsTakeshi Fukuda, Takuya Tsuzuki
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Abstract
A deformation detection sensor which combines a magnetic resin dispersing a magnetic filler in a resin with a magnetic sensor, of which stability of detection property is highly enhanced. The deformation detection sensor comprises a magnetic resin-containing polymer foam which comprises a magnetic resin, in which a magnetic filler is contained, and a polymer foam in which the magnetic resin is included, and a magnetic sensor that detects a magnetic change caused by a deformation of the magnetic resin-containing polymer foam, wherein the magnetic resin has an elastic modulus of 0.1 to 10 MPa, and a production thereof.
Claims12
A deformation detection sensor which comprises:
- a magnetic resin-containing polymer foam which comprises a magnetic resin, in which a magnetic filler is contained, and a polymer foam in which the magnetic resin is included, and
- a magnetic sensor that detects a magnetic change caused by a deformation of the magnetic resin-containing polymer foam,
- wherein the magnetic resin has an elastic modulus of 0.1 to 10 MPa.
A method for producing a deformation detection sensor, comprising the steps of:
- a step of dispersing a magnetic filler in a polyurethane resin precursor comprising a mono-ol component,
- a step of curing the resin precursor to form a magnetic resin having an elastic modulus of 0.1 to 10 MPa,
- a step of placing the magnetic resin in a mold for a polymer foam,
- a step of pouring a polyurethane raw material of the polymer foam into the mold to foam, whereby the magnetic resin is integrated with the polymer foam, and
- a step of combining the magnetic resin-containing polymer foam with a magnetic sensor that detects a magnetic change caused by a deformation of the magnetic resin-containing polymer foam.
Dependencies are inferred from the claim text.