DETONATION-SYNTHESIS NANODIAMONDS IN COMPOSITIONS OF ULTRAHIGH-MOLECULAR-WEIGHT POLYETHYLENE

A study has been made of the infl uence of an ultradisperse carbonaceous product, i.e., detonation-synthesis nanodiamonds, on the structure and properties of nanocomposites based on ultrahigh-molecular-weight polyethylene using electron microscopy and acoustic, electrophysical, thermomechanical, and x-ray phase analysis methods It has been shown that a diamond blend is a structurally active fi ller of ultrahigh-molecular-weight polyethylene, which changes the crystalline and supermolecular structure of the polymer during its melt crystallization under the conditions of uniaxial plastic deformation. The developed polymer nanocomposites based on ultrahigh-molecular-weight polyethylene, which contain 0.5–0.25 wt.% of the diamond blend, possess higher than average indices of hardness, modulus of elasticity, and electrical conductivity manifested to a larger extent in the frequency range 1–10 kHz, a low friction factor (0.15–0.18), and high resistance to wear under dry-friction conditions (the wear rate is 10^–4–10^–5 mg/m).
A study has been made of the infl uence of an ultradisperse carbonaceous product, i.e., detonation-synthesis nanodiamonds, on the structure and properties of nanocomposites based on ultrahigh-molecular-weight polyethylene using electron microscopy and acoustic, electrophysical, thermomechanical, and x-ray phase analysis methods It has been shown that a diamond blend is a structurally active fi ller of ultrahigh-molecular-weight polyethylene, which changes the crystalline and supermolecular structure of the polymer during its melt crystallization under the conditions of uniaxial plastic deformation. The developed polymer nanocomposites based on ultrahigh-molecular-weight polyethylene, which contain 0.5–0.25 wt.% of the diamond blend, possess higher than average indices of hardness, modulus of elasticity, and electrical conductivity manifested to a larger extent in the frequency range 1–10 kHz, a low friction factor (0.15–0.18), and high resistance to wear under dry-friction conditions (the wear rate is 10^–4–10^–5 mg/m).
Author:  V. I. Dubkova,a A. P. Korzhenevskii, N. P. Krut′ko, V. G. Komarevich, and L. V. Kul′bistkaya
Keywords:  polymer, ultrahigh-molecular-weight polyethylene, nanodiamonds, nanocomposites, diamond blend, x-ray degree of crystallinity, resistance to wear, morphology
Page:  1024