Abstract
Nitrogen contained boric acid ester and polyether additive are all well-performed water-based lubricant additives.The film forming properties of the two additives mixed water-based lubricating fluid is not studied.The transparent aqueous solution is the 1∶1(m/m) mixture of lauric acid random copoly-ether(LPE) and boric acid triethanolamine(BN).The effect of concentration,load and linear speed on the film-forming property of the mixed polyether aqueous solution are analyzed by the nanometer scale lubrication film thickness gauge(NGY-6).Results of the tests show that film thickness of the water-based lubricant(5%,v/v,load 100 N) is 5.5 nm,and it can bear the load of 0.86 GPa.The film-forming property of water-based lubricants is affected by the concentration,load and linear speed.With the increase in the load,the effect of linear speed on film-forming property decreases.Meanwhile,in the experiments,the chemical adsorption film is formed on the friction pair surfaces.The nanoscale film-forming properties of the lubricating film can be widely applied in the field of precision instruments.
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