With the continuous improvement of product performance requirements, the performance requirements of materials are also becoming higher and higher. Carbon fiber composite materials are representatives of high-performance materials developed through research and development. There are also many types of divisions in the development of carbon fiber materials, and there will be strong Weak difference, the more common ones are T series carbon fiber products, for example, T300 carbon fiber, basically every manufacturer of carbon fiber products here has this kind of T300 carbon fiber application more, what we want to talk about in this article is carbon fiber T700 and carbon fiber T800 material, what are the differences between these two materials.
In carbon fiber T700 and carbon fiber T800, there are also different models. For example, carbon fiber T700 has models such as T700S and T700G, and carbon fiber T800 also has common models such as T800S and T800H. Then we will use these four models, Let me tell you about some parameters I know.
1. Carbon star, the carbon star of carbon fiber T700S is 93%, and the carbon content of carbon fiber T800H is 96%. The carbon content is actually a good indication of the performance of this carbon fiber tow. The higher the carbon content, the better the performance of this type of carbon fiber product.
2. Sizing agent, the sizing agent of carbon fiber T7O0G is 31E0.5%, the sizing agent of carbon fiber T7OOS is S0C1.0%, the sizing agent of carbon fiber T8O0OH is 40A40B1.0% and 50B0.7%; the sizing agent of carbon fiber T8O0S is 10E0. 5%.
3. Twisting, carbon fiber T800H is twisted and untwisted, while carbon fiber T700G, T700S, and T80OS are untwisted.
4. Thermal conductivity, the thermal conductivity of carbon fiber above is 0.0224Cal/am·s·℃ for carbon fiber T700S, and 0.0839Cal/cm-s·C for carbon fiber T800H.
5. Thermal expansion coefficient, carbon fiber T700S is -0.3810(-6)/C, carbon fiber T800H is -0.5610(-6)/C.
6. Elongation at break, carbon fiber T700G is 2.0%, carbon fiber T700S is 2.1%; carbon fiber T80OH is 1.9%, carbon fiber T800S is 2.0%.
7. Conductive resistance, carbon fiber T70OS is 1.6×10(-3)Q-cm, carbon fiber T800H is 1.4×10(-3)Q-cm.
8. Tensile strength, carbon fiber T700G and T700S are both 4900Mpa, carbon fiber T800H is 5490Mpa, carbon fiber T800S is 5880Mpa.
9. Tensile modulus, carbon fiber T700G and T700S are 240Gpa and 230Gpa respectively, and carbon fiber T800H and T800S are both 294Gpa.
10. Density and diameter: The density of T80OH is 1.81g/m3, which is slightly higher than the density of the other three types of 1.80g/m3; the diameter of T80OH is 5um, which is lower than the diameter of the other three types by 7um.
11. Tow: T700G: 12K, 24K, T700S: 6K12K24K, T800H: 6K12K, T800S: 24K.
From such an overall comparison, it can be seen that there is still a big difference between Xuan fiber T700 and Yi fiber T80. From the perspective of comprehensive performance, it must be that carbon fiber T800 is much higher than carbon fiber T700. In actual use In the middle, it depends on the application of the product, because if you choose Long Fiber T8O0 material, the price must be more expensive. The normal carbon fiber material selection, such as fiber T30, can realize the lightweight advantages of many products. If you need carbon fiber products, you must choose a good carbon fiber product manufacturer.
Post time: Nov-23-2022