When it comes to carbon fiber fabric, I believe that many building reinforcement people should be aware of it. Carbon fiber fabric is widely used in recent years in reinforcement and renovation projects. Just talking about Unidirectional carbon fiber fabric, some people may simply stay in the preliminary understanding of the level of awareness. How much do we know about UD carbon fiber fabric?

    First of all, the knowledge of UD carbon fiber fabric grade I and grade II. The standard value of tensile strength of grade I Unidirectional carbon fiber cloth is ≥3400MPa, the standard value of tensile strength of grade II cloth is ≥3000MPa, the tensile modulus of grade I cloth is ≥2.3×105MPa, the tensile modulus of grade II cloth is ≥2.0×105MPa, the elongation of grade I cloth is ≥1.6%, the elongation of grade II cloth is ≥1.3%. 

    After the knowledge of grade I and grade II, let's look at the "k "of carbon fiber , what does it represent? "k" represents the number of carbon fibers. Because it is different from ordinary textiles, the textile unit of carbon fiber cloth is not a single filament, but a bundle of filaments. Industrial mass-produced bundles can contain 1000 (1K), 3000 (3K), 6000 (6K), 12000 (12K), 24000 (24K), 48000 (48K) and 54000 (540K) monofilaments. For example, 1K represents 1000 filaments in a bundle of carbon fiber , 3K represents 3000 filaments in a bundle of carbon fiber , and 12K represents 12000 filaments.

    Let's look at 200g and 300g, the last paragraph just finished the meaning of k. In terms of weaving, 200g/㎡ carbon fiber cloth uses 24 12k carbon fiber filaments for weaving, while 300g/㎡ carbon fiber cloth uses 36 12k carbon fiber filaments for weaving; in terms of thickness, the design thickness of 200g/㎡ carbon fiber cloth is 0.111mm, however, the design thickness of 300g/㎡ carbon fiber cloth is 0.167mm.