Each bundle of carbon fiber contained in the single fiber number is an important index of carbon fiber, large tow carbon fiber usually refers to carbon fiber root number in the 48000 (48K) above the fiber bundle, including 50000 (50K), 60000 (60K), 120000 (120K), 360000 (360K). However, small tow carbon fibers to carbon fiber bundle fiber number is less than 48K, such as 1000 (1K), 3000 (3K), 12000 (12K), 24000 (24K). This article is concerned with the study of the properties of small size tow carbon fibers.

1, the size of sizing rate test results showed that tow carbon fiber, sizing of domestic carbon fiber was generally higher than that of foreign carbon fiber sizing rate for 12K carbon fiber, carbon fiber sizing rate is higher than 1%, while the foreign carbon fiber sizing rate is generally lower than 1%; for different wire bundle size of carbon fiber, 3K surface sizing the lowest rate of 50K carbon fiber, carbon fiber surface sizing was the highest, the remaining carbon fiber sizing rate.

2, the carbon fiber single fiber tensile test, the results found for 12K carbon fiber production of different manufacturers at home and abroad, the shape parameters of foreign carbon fiber single fiber strength is higher than that of the shape parameters of domestic carbon fiber, fiber strength that carbon fiber dispersion is less than the foreign domestic carbon fiber, which is more stable than that of domestic carbon fiber. The scale parameter of carbon fiber in foreign countries is generally higher than that of domestic carbon fiber, indicating that the strength of carbon fiber abroad is higher than that of domestic carbon fiber. For different carbon fiber bundle size, large tow carbon fiber shape parameter fluctuations, while the small tow carbon fiber shape parameter fluctuation is very small, indicating the stability of large tow carbon fiber as small tow carbon fiber.

3, study on the shear properties of carbon fiber reinforced resin interface, carbon fiber interface shear performance of production of dry jet wet spinning process of carbon fiber interface shear performance is better than the wet spinning process; carbon fiber / resin interfacial shear properties of domestic carbon fiber is lower than that of foreign countries; large tow carbon thin resin bounded while shear strength than small tow carbon fiber.

On the current market, the use of small tow carbon fiber than large tow carbon fiber.

Shenzhen CN Technology Co.,Ltd is a professional manufacturer and distributor of carbon fiber products. Such as roll wrapped carbon fiber tubes,Hot press carbon fiber sheets,CNC carbon fiber cutting,carbon fiber chamfered.