초록 ▼

Light metal/CFRP-made structural members which are characterized in that they are structural materials in which a CFRP material is stuck to the surface of a light metal material via an adhesive agent layer of thickness at least 10 .mu.m and up to 500 .mu.m, and the volume resistivity of the adhesive

Light metal/CFRP-made structural members which are characterized in that they are structural materials in which a CFRP material is stuck to the surface of a light metal material via an adhesive agent layer of thickness at least 10 .mu.m and up to 500 .mu.m, and the volume resistivity of the adhesive agent layer between said metal material and said CFRP material is at least 1.times.1013 .OMEGA..cm and, furthermore, the adhesive strength at room temperature is at least 15 MPa. In accordance with the present invention, since conventional light metal/CFRP structural materials can be made lighter and, furthermore, since the resistance to galvanic corrosion is outstanding and it is possible to markedly enhance the strength and the impact energy absorption performance, the development of applications and large-scale expansion into new fields becomes possible. Weight reduction and enhancing the durability and reliability of structures also makes a considerable contribution in terms of environmental protection.

대표청구항 ▼

1. A structural member comprising a carbon fiber reinforced plastic material stuck to a surface of a light metal material via an adhesive agent layer of thickness from 10 .mu.m to 500 .mu.m,wherein the adhesive agent layer has a first volume resistivity in accordance with JIS K6911 (1995) of at leas

1. A structural member comprising a carbon fiber reinforced plastic material stuck to a surface of a light metal material via an adhesive agent layer of thickness from 10 .mu.m to 500 .mu.m,wherein the adhesive agent layer has a first volume resistivity in accordance with JIS K6911 (1995) of at least 1.times.1013 .OMEGA..cm, a first adhesive strength at room temperature in accordance with JIS K6850 (1994) of at least 15 MPa and a second volume resistivity in accordance with JIS K6911 (1995) of at least 1.times.109 .OMEGA..cm, after the adhesive agent has been exposed for 40 days to an atmosphere of temperature 65.degree. C. and relative humidity 85%, and wherein the thickness of the carbon fiber reinforced plastic is from {fraction (1/100)} to 1/3 of the thickness of the light metal material.