The main materials for carbon fiber reinforcement are carbon fiber cloth and impregnated glue. At present, some unscrupulous merchants in the market will mix fish eyes into carbon fiber cloth by changing the color and other bad means. Many outsiders have little access to carbon fiber materials, and many owners pay the price of real carbon cloth to buy dyed fake carbon cloth, which is not only a loss, but also the progress of the project. Fake carbon fiber cloth cannot meet the requirements of the design compressive strength parameters, and cannot have the effect of reinforcement. Therefore, you must keep your eyes open when selecting materials, so how to judge whether it is true or false? Next, the editor will analyze it for everyone.
1. Judging from the surface
Carefully observe the color tone of the surface layer of carbon fiber cloth to judge. The color tone of carbon fiber cloth woven with real carbon filaments is generally bright and uniform, but the color tone of generally fake carbon fiber cloth is dull, dry, uneven, and the specifications are consistent.
2. Judging from hands
Touching the carbon fiber cloth can also help us distinguish whether the carbon fiber cloth is real or not. The real carbon fiber cloth feels soft and elastic, and you can feel the uniformity of the tow, otherwise it is likely to be a fake carbon fiber cloth.
3. Burn with fire
As the old saying goes, “True gold is not afraid of red fire.” The same is true for carbon fiber cloth in the true sense. In the true sense, there is only a little spark when the carbon fiber cloth burns, there is no flame, and it goes out immediately after leaving the fire source. Like burning wire.
When the fake carbon fiber cloth touches the flame, its color will change, and it will also smell bad. Fake carbon cloth is combustible, so it is light yellow after burning, white or other different colors must be fake.
4. Technical testing
The real carbon fiber cloth has high shear resistance and tensile strength. Fake carbon fiber cloth with very low compressive strength.
Post time: Dec-12-2022