Iron-loaded graphene-based tungsten disulfide nano lubricant additive and preparation method thereof
A technology of alkenyl tungsten disulfide and lubricants, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of poor anti-wear performance and harsh preparation methods, and achieve improved extreme pressure wear resistance, less pollution, Effect of improving dispersibility and stability
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Embodiment 1
[0032] The present embodiment provides a preparation method of a graphene-based tungsten disulfide nano-lubricant additive loaded with iron, comprising the steps of:
[0033] S1: Dissolve sodium tungstate and thioacetamide in deionized water respectively to form an aqueous solution of sodium tungstate with a tungsten concentration of 40g / L and an aqueous solution of thioacetamide with a sulfur concentration of 32g / L, and then add 0.1L tungstic acid Sodium aqueous solution and 0.1L thioacetamide aqueous solution are mixed, and the mixed solution is adjusted to a pH value of 1 with hydrochloric acid aqueous solution;
[0034] S2: adding 0.8 g of graphene oxide to the solution in step S1, and ultrasonically treating it for 30 min at a frequency of 20 kHz and a power of 200 W to obtain a first suspension;
[0035] S3: Transfer the first suspension obtained in step S2 to a 100mL polytetrafluoroethylene autoclave, and move the autoclave to a heating box, and react for 36 hours at a ...
Embodiment 2
[0041] The present embodiment provides a preparation method of a graphene-based tungsten disulfide nano-lubricant additive loaded with iron, comprising the steps of:
[0042] S1: Dissolve sodium tungstate and thioacetamide in deionized water respectively to form an aqueous solution of sodium tungstate with a tungsten concentration of 36g / L and an aqueous solution of thioacetamide with a sulfur concentration of 30g / L, and then add 0.2L tungstic acid Sodium aqueous solution and 0.2L thioacetamide aqueous solution were mixed, and the mixed solution was adjusted to a pH value of 1 with aqueous hydrochloric acid;
[0043]S2: adding 0.7 g of graphene oxide graphene oxide into the solution in step S1, and ultrasonically treating it for 30 min under the conditions of a frequency of 20 kHz and a power of 200 W, to obtain a first suspension;
[0044] S3: Transfer the first suspension obtained in step S2 to a 100mL polytetrafluoroethylene autoclave, and move the autoclave to a heating bo...
Embodiment 3
[0050] The present embodiment provides a preparation method of a graphene-based tungsten disulfide nano-lubricant additive loaded with iron, comprising the steps of:
[0051] S1: Add ammonium tungstate and sodium sulfide to deionized water to fully dissolve respectively to form an aqueous ammonium tungstate solution with a tungsten concentration of 54g / L and an aqueous solution of sodium sulfide with a sulfur concentration of 30g / L, then add 0.12L ammonium tungstate solution and 0.24 L sodium sulfide aqueous solution is mixed, and mixed solution is adjusted to pH value 2 with nitric acid aqueous solution;
[0052] S2: adding 1.2 g of graphene oxide to the solution in step S1, and ultrasonically treating it for 20 min at a frequency of 20 kHz and a power of 200 W to obtain a first suspension;
[0053] S3: Transfer the first suspension obtained in step S2 to a 100mL polytetrafluoroethylene autoclave, and move the autoclave to a heating box, and react at a temperature of 170°C an...
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