Carbon and aramid fibers are two very different, but each has its own advantages as high-performance materials, and they are used in a wide range of applications in several industries. Here is a brief comparison:
· Carbon and Aramid Fibers have different applications
Carbon fiber is a new type of fiber material containing more than 95% carbon, because of its high strength, high modulus. High heat resistance, high acid and alkali resistance and known.
Carbon fiber is mainly used in aerospace, defense and military industry, with the large tow carbon fiber production capacity, industrial manufacturing and civilian applications are increasing.
Aramid fiber is a new type of synthetic fiber, which is fundamentally different from carbon fiber. Aramid fiber has the same characteristics of high strength, high modulus, high temperature resistance, acid and alkali resistance and other performance is also very good, commonly used in bulletproof products, construction materials, special protective clothing and electronic equipment.
·Comparison of thermal stability between carbon fiber and aramid fiber
Aramid fiber has good thermal stability, at high temperatures, it until the decomposition does not deform, can be used for a long time at 180 ℃, at 150 ℃ after a week of action strength, modulus will not decline. In addition, its coefficient of thermal expansion is -2×10^-6.
Compared with aramid, carbon fiber thermal stability is also superior, the coefficient of thermal expansion is smaller than aramid, -1.4×10^-6.
·Comparison of thermal and chemical properties of carbon fiber and aramid fiber
The chemical properties of carbon fiber are similar to carbon, it can be oxidized by strong oxidants in addition to the general alkaline is inert. In the air at temperatures higher than 400 ℃ when the apparent oxygen. Carbon fiber has good corrosion resistance to general organic solvents, acids, alkalis, insoluble and non-expansive, corrosion resistance is outstanding, there is no rust problem.
Aramid fiber has good media resistance, the resistance to neutral chemicals is generally very strong, but vulnerable to a variety of acid and alkali erosion, especially strong acids, it is not good water resistance.
·Carbon fiber and aramid fiber mechanical property differences
T300 carbon fiber tensile strength of 3000MPa, elastic modulus 225GPa, elongation at break 1.7%, density 1.7g/cm^3, T1000 carbon fiber performance than the T300 is higher than the performance of a larger performance zone.
The aramid fiber has a tensile strength of 2815 MPa, modulus of elasticity of 126 GPa, elongation at break of 2.5%, and density of 1.44 g/cm^3. The aramid fiber has a very good performance in terms of impact resistance, and the ductility is also higher. In terms of mechanical properties to compare, carbon fiber upper limit is higher, especially the strength and modulus performance is better.
In summary, the actual application of carbon fiber and aramid fiber needs to be decided according to the needs and scenarios, suitable is the most important!