Research of the wettability of fiber oil flax and hemp

Purpose. Investigate the wettability of oil flax and hemp with a view to their further use in the production of composites for technical purposes. Methodology. Experimental studies of consumer properties of oil flax and hemp were carried out using standard methods and means of measurement in accordance with TU U25.2- 32512498-001-2004 “Pressed phenolic mass". Findings. Based on the theoretical and experimental studies it was concluded that the cause of the low wettability of oil flax and hemp is the cuticle. The cuticul layer does not fully wetted the of oil flax and hemp therefore the main task is to find methods and methods that allowed to destroy the cuticul layer and achieve a wettability close to cotton fiber 120 g and also increase the adhesion between the fibrous filler and the polymer matrix without damaging. To this end a series of experiments was carried out to determine the wettability of the of oil flax and hemp after freezing at –20°C as well as after processing in a microwave oven. As a result of experimental studies the wettability after freezing the oil flax doubled and the cannabis more than five times. After processing oil flax and hemp in a microwave oven, wettability increased by an average of 12.14 g in oil flax and in hemp by 13.9 g. The results of the conducted studies showed that in general treatment methods have a positive effect on increasing wettability but they require further research to increase wettability. Therefore an urgent task is the search for new methods and methods for processing of oil flax and hemp for further use in composite materials for technical purposes. Originality. The positive effect of freezing and microwave effects on the wetting index of oil flax and hemp has been established. The practical value. On the basis of experimental studies methods for treating oil flax and hemp have been determined which make it possible to increase the wettability and adhesion between the fibrous filler and the polymer matrix

fiber; flax oil; hemp; wetting; cuticle; consumer properties