Synthesis of C60-Dodecyl Acrylate Copolymer and its Tribological Behavior
- Received Date: 2002-03-19
Abstract: A novel oil-soluble C60 -dodecyl acrylate copolymer was synthesized. The resulting product was characterized by means of Fourier transformation infra-red spectrometric and ultra-violet-visible spectrometric analyses. The frictional behavior of oil-soluble fullerene copolymer was studied for the first time. Its tribological characteristic as lubricant additive in liquid paraffin was studied with a four-ball machine and a scanning electronic microscope. The results form four-ball tests are given as follows. ① The wear scar diameter obtained with liquid paraffin containing fullerene copolymer is related to the content of the fullerene copolymer. With the increasing of the fullerene copolymer content，the wear scar diameter is decreased. When the content is between 0. 5% and 0. 75%，the wear scar diameter is minimum. Then excessive fullerene copolymer results in an increasing of wear scar diameter. ② With the increasing of friction time，the wear scar diameter obtained with liquid paraffin containing 0. 5% fullerene copolymer under a load of 200 N increases also. After 20 min rubbing，the wear scar diameter doesn't increase any more. By comparison，the liquid paraffin under the same conditions gives larger wear scar diameter，especially after 20 min rubbing，the difference in wear scar diameter between two lubricants becomes larger. SEM shows that the wear scar obtained with liquid paraffin containing 0. 5% fullerene copolymer under a load of 100 N and a testing time of 30 min is obviously smaller and exhibits mild scratches，but in comparison，larger wear scar and serious adhesive wear were observed in the presence of liquid paraffin under the same conditions. In a word，the addition of a certain amount of C60 -dodecyl acrylate copolymer can improve the antiwear properties of liquid paraffin and the micro wear conditions of the frictional pair.
|Citation:||Lei Hong, Luo Jianbin, Yang Wenyan, Guan Wenchao. Synthesis of C60-Dodecyl Acrylate Copolymer and its Tribological Behavior[J]. Chinese Journal of Chemical Physics , 2002, 15(6): 471-475. doi: 10.1088/1674-0068/15/6/471-475|