In May 2020, Toray announced the development of a new type of high-strength, high-modulus carbon fiber with a tensile strength of 4.8 GPa and a tensile modulus of 390 GPa; the strength of this high-modulus carbon fiber is slightly lower than that of Toray T700's 4900 MPa, but the modulus An increase of 70% ensures that the final carbon fiber structure has ultra-high stiffness characteristics.
The fiber body density is only 1.74g/cm3, which is lower than the 1.80g/cm3 of T700 fiber, so it has a more excellent lightweight effect. Therefore, this product is expected to replace the traditional T700 carbon fiber, and its final application will also be aimed at Automobile lightweight and other fields.
This type of high modulus carbon fiber is combined with the newly developed TORAYCA® Pettlet thermoplastic pellets, and the pellets processed by the injection molding process have a tensile modulus of 41 GPa, which is equivalent to the magnesium alloy modulus (45 GPa). The specific gravity is only 1.4, while the specific gravity of magnesium alloy is 1.8. Therefore, by using these new thermoplastic pellets and injection molding, parts with complex shapes can be manufactured and productivity can be greatly improved, and it has made a great contribution to the weight reduction of parts.