Study on the Dispersion of 1.5mm & 4mm Chopped Carbon Fiber in Triethyl Phosphate

摘要

For the preparation of chopped CF (carbon fiber, CF) composite material, it must be scattered at first. Based on the theory of “direct observation” and “crowding factor”, 1.5 mm and 4 mm short cut dispersion of CF which is done by acetone firstly in triethyl phosphate was studied in this paper, using triethyl phosphate as dispersant. Controlling the dosage of the dispersant and ultrasonic time to prepare for the dispersion of suspension, the macroscopic and microscopic structure of CF were tested before and after treatment. Test results show that to achieve good dispersibility for 4mm and 1.5mm CF with mass of 0.1g, the ultrasonic time should be controlled 2h and the amount of triethyl phosphate, the quality is 0.1 g of 4 mm and 1.5 mm of CF good dispersibility, respectively is 200 ml and 300 ml of dispersion conditions.