What do you mean by carbon fiber for 1K, 3K, 6K and 12K?
Upstairs copy so much, people watching tired not tired.1K, 3K, 6K, 12K refers to the carbon fiber yarn containing the number of filaments, K is unit (thousand), 1K is 1000 followed, 3K is 3000, and so on, and so on!
1K, 3K, 6K, 12K, in which K refers to the number of filaments. 1K is made up of 1000 single wires. If you don't understand, you can just put K and 1000 equal.
This is the specification of carbon fiber, refers to the number of filaments in carbon fiber tow, 1K=1000 (root), 3K=3000 (root), 6K=6000 (root), 12K=12000 (root). At the same time, 1K, 3K, 6K, and 12K are also called small tow.The relationship between the properties of carbon fibers and the number of filaments is described below:According to the number of carbon fiber bundle of carbon fiber filaments can be divided into small tow and tow two. Compared with small tow, the disadvantage of large tow is that when the structure of the plate is made, the tow should not spread out, resulting in the increase of the monolayer thickness, which is not conducive to the structural design. In addition, large tow carbon fiber adhesion, wire breaking phenomenon more, which makes the strength and stiffness of the affected, a decrease in performance, the performance of dispersion will be larger. Aircraft, spacecraft generally only a small tow carbon fiber, so the small tow carbon fiber is also known as the "space" of carbon fiber, large tow carbon fiber is known as the "industrial grade carbon fiber.But large tow production costs than small tow low, and with the progress of the production technology, people familiar with the structure of the carbon fiber material, large tow carbon fiber more and more stringent requirements for reliability field. In this way, between the small and large tow tow distinguish changes, such as earlier in the number of single tow 12000 (12K) as the dividing line, but the number of carbon fiber 1K~24K is divided into small bundles, rather than 48K designated as large tow. While the Airbus Company has begun to use 24K carbon fibers in the manufacture of A380 super large aircraft, it is estimated that as the technology advances, the line between the small tow and the big tow will push up.
