Rheological properties of chopped carbon fiber reinforced nylon 66

doi:10.19936/j.cnki.2096-8000.20220928.012

Abstract

Abstract: The rheological properties of polymers are an important factor affecting the properties of composite materials, this paper studies the rheological properties of the SCF/PA66 blend system. Chopped carbon fiber reinforced nylon 66 (SCF/PA66) composites with different fiber contents were prepared by melt blending, and the effects of fiber content and frequency on the rheological properties of the SCF/PA66 blend system were studied by capillary rheometer, scanning electron microscope and rotary rheometer. The results show that SCF/PA66 is a non-Newtonian fluid. After addition of SCF, the non-Newtonian coefficient decreases and the consistency coefficient increase. When SCF is 10wt%, the apparent viscosity of the melt is the smallest, and when SCF is 20wt% and 40wt%, the apparent viscosity of the melt is the largest. After adding more SCF, the storage modulus and loss modulus of the blend system are greatly improved. When the SCF is 20wt%, the loss factor of the composite system is less than 1, and the elastic response of the material is always dominant.

Key words: chopped carbon fiber reinforced nylon 66, rheological properties, fiber content, viscosity

CLC Number:

TB332

HUANG Zhen-yuan, LI Bing-hua, CHENG Bin, Chen Yi. Rheological properties of chopped carbon fiber reinforced nylon 66[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 83-89.

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