Mitsubishi Rayon Reduces Half the Time Required for Molding Carbon Fiber Prepreg, Targeting Auto Applications

Mitsubishi Rayon announced that it shortened the time required for molding of carbon fiber prepreg by half and started commercial development in April and started selling hard carbon fiber prepreg in automobile applications. - Qure). Compared to conventional products, not only the required molding time is halved, but also the toughness is improved. It takes about 5 minutes to stamp the prepreg at 140 ° C. The company is developing alternative prepregs and alternative markets for automotive and other industrial machinery applications.

The carbon fiber precursors are polyacrylonitrile (PAN), rayon and asphalt. Carbon fiber filament yarn is used for various processing technologies such as prepreg, filament winding, pultrusion, weaving, weaving and so on. Linear density of carbon fiber yarn (weight per unit length, ie 1 g / 1000) m = 1 tex) or the number of filaments per yarn count, in thousands. For example, in the case of 3,000 carbon fiber filaments, the strength of 200 tex is three times the strength of 1,000 carbon fiber filaments, but three times the weight. This yarn can then be used to weave carbon fiber filament cloth or fabric. The appearance of the fabric generally depends on the linear density of the yarn and the selected fabric. Some commonly used types of fabric are twill, satin and solid color. The carbon yarn can also be knitted or knitted

Mitsubishi Rayon announced that it shortened the time required for molding of carbon fiber prepreg by half and started commercial development in April and started selling hard carbon fiber prepreg in automobile applications. - Qure). Compared to conventional products, not only the required molding time is halved, but also the toughness is improved. It takes about 5 minutes to stamp the prepreg at 140 ° C. The company is developing alternative prepregs and alternative markets for automotive and other industrial machinery applications.

In 1958, Roger Bacon produced high performance carbon fiber at Union Carbide Parma Technology Center in the outskirts of Cleveland, Ohio. These fibers are made by heating the rayon wire until they are carbonized. This method proved to be inefficient as the resulting fiber contains only about 20% carbon and has low strength and stiffness properties. In the early 1960s, Dr. Akio Shindo of the National Institute of Advanced Industrial Science and Technology of Japan developed a method using polyacrylonitrile (PAN) as a raw material. As a result, carbon fibers containing about 55% carbon are produced. In 1960, H.