| 摘要 |
The invention relates to petroleum chemistry, more specifically to sulfur-containing molybdenum compounds and to the use thereof in the form of lubricant additives which decrease friction coefficient.In the first variant, molybdenum trisulfide nanoparticles and the derivatives thereof are produced from thio-molybdenum acid salts of the general formula MMoSO, wherein M=NH, Na, x=0-3 in the presence of two modifiers, one of them being embodied in the form of tetra-alkyl-ammonium salts or a mixture of salt of the general formula RRRR>NX, wherein R, R, Rand Requal or different are selected from a group containing C-Calkyl, X=Cl, Br, the second modifier being embodied in the form of a succinimide of the general formula Formulawherein R= straight or branched-chain alkyl or oligoalkylene whose molar mass ranges from 140 to about 1000, Ris selected from a group comprising H, -C(=O)NH, -(CHCHNH)CH, n=1-4. The process is carried out by means of a thermal treatment which is homogenised in the polar solvent of the mixture of a thio-molybdenum acid salt and the first or second modifier, cooling the thus produced mixture and a subsequently adding the second or the first modifier, respectively.In the second variant, the inventive method consists in producing molybdenum trisulfide nanoparticles and the derivatives thereof from molybdenum acid salts of the formula MMoO, wherein M=NH, Na, and a sulphur donator embodied in the form of an inorganic sulphide or a polysulfide of the general formula M'2Sn, wherein M'= M=NH, Na, n=1-4, or a thiocarbamide, afterwards, the first variant being used.In the proposed method, according to any variant, the thermal processing is carried out at a temperature of 150 to 220°C. for 1-2 hours, methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, 2-butanol, acetone or benzene are used as the solvent. |
