Method for production of joint member for carbon fiber composite material
A technology for composite materials and joining components, applied in chemical instruments and methods, metal material coating technology, lamination, etc., can solve problems such as joining, and achieve the effect of preventing electrolytic corrosion
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[0072] The present invention will be specifically described below on the basis of examples, but the present invention is not limited to these examples.
[0073] Physical property measurement and evaluation conditions in each of Examples and Comparative Examples are as follows.
[0074] 1) Joint strength
[0075] Five joined members described in each example were prepared, and a tensile strength value obtained by performing a tensile test at a rate of 1 mm / min using a universal testing machine INSTRON5587 was defined as the joint strength of the joined members.
[0076] [Reference Example 1]
[0077] Preparation of carbon fiber composites with continuous fibers stacked alternately at 0° and 90°
[0078] Continuous carbon fibers (TENAX STS40-24KS (fiber diameter: 7 μm, tensile strength: 4,000 MPa), manufactured by Toho Tenax Co., Ltd.) were alternately stacked in 64 layers with fiber directions of 0° and 90°, while stacking nylon 6 membranes (UNITIKA EMBLEM ON, 25 μm thick) (...
Embodiment 1
[0085] The above-mentioned metal surface treatment was applied to both surfaces of SPCC (cold-rolled carbon steel sheet) with a length of 100 mm, a width of 25 mm, and a thickness of 1.6 mm, and two nylon 6 films (UNITIKA EMBLEM ON, 25 μm thick, melting point: 225°C). The SPCC sheet was heated to 250° C. by electromagnetic induction heating, and then immediately cooled to normal temperature. The nylon film was melted and tightly adhered, and then cured to form a layer of nylon 6 on the surface of the SPCC. The carbon fiber composite material obtained in Reference Example 2 was cut into a length of 100 mm and a width of 25 mm, stacked on a SPCC sheet with a nylon layer in the range of 25 mm × 25 mm by single lapping, and heated at 250 ° C using a mold at 0.2 Pressure was applied under MPa for 5 minutes to prepare a joint member between the thermoplastic carbon fiber composite material and the SPCC sheet. Five joint members were prepared, and a tensile test was performed at a ...
Embodiment 2
[0087]The above-mentioned metal surface treatment was applied to both surfaces of a 590MPa type high-strength steel having a length of 100 mm, a width of 25 mm, and a thickness of 1.6 mm, and two nylon 6 films (UNITIKA EMBLEM ON , 25 μm thick). The high-strength steel is heated to 250° C. by electromagnetic induction heating, and then immediately cooled to normal temperature. The nylon film is melted, tightly adhered and cured to form a layer of nylon 6 on the high strength steel surface. The flat plate containing random materials obtained in Reference Example 2 was cut into a length of 100 mm and a width of 25 mm, and was stacked on high-strength steel with a nylon layer in the range of 25 mm × 25 mm by single lapping, and the thermoplastic carbon fiber composite material was placed on the Heated at 250° C., and the high-strength steel was heated to 140° C., and then pressurized at 0.2 MPa for 1 minute under heating using a die. Subsequently, the high-strength steel in the ...
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