We developed functional synthetic lubricant for internal combustion engine oil, which would improve engine oil performance for internal combustion engine and extend engine life. We made base oil by synthesizing Nonanoic acid (Pelargonic acid), 1.1.1-trimethylolpropane (which has good bio-degradabili...
We developed functional synthetic lubricant for internal combustion engine oil, which would improve engine oil performance for internal combustion engine and extend engine life. We made base oil by synthesizing Nonanoic acid (Pelargonic acid), 1.1.1-trimethylolpropane (which has good bio-degradability) and pentaerythritol ester. We synthesized catalyst using p-toluene sulfonic acid 0.15 wt% and coloring-prevention agent hypo-phosphorus acid 0.18 wt% at 180-190 ℃. Reaction temperature was increased at the rate of 10 ℃ for every 1 hour. When acid value reached below 3, reaction was completed. After cooling and deoxidization, we washed it by distilled water two times. After dehydration and filtering, we obtained trimethylolpropane tripelargonate (TMTP) and pentaerythritol tetrapelargonate (PETP) at yields of 96 % and 98 % respectively. The polyolester of Nonanoic acid synthesized in this research had 98 % bio-degradability, which is similar to existing polyolester synthesized lubricant trimethylolpropane trioleate (TMTO) and trimethylolpropane tricaprylate (TMTC). In general, when making synthesized lubricant, they use 95 wt% base oil and additive 5 wt%. But in this research, we used 1∼4 wt% of each additive to make synthesized lubricant. We also measured, compared and examined basic properties of lubricant, such as dynamic viscosity, cold resistance, oxidation stability, high temperature/thermal stability and anti-wear/anti-friction properties. Viscosity index of lube base oil was more than 135. As viscosity nature is good and low temperature pour point was -55 ℃, we can make high quality, high functional lubricant. Viscosity nature of viscosity-index-improving- agent was better in PMA than in OCP, however, shearing safety was better in OCP. It is desirable to mix at 50 : 50 wt% dependent on industrial application. In accordance with increase of Zn-DTP added to synthetic lube base oil, anti-wear/anti-friction properties improved. If the added amount is same at fixed temperature, anti-wear/anti-friction properties of polyolester synthetic lube base oil was better by 0.212 mm than existing lube base oil. Zn-DTP, oxidation stabilizer as well as anti-wear/anti-friction additive, improved oxidation stability and high-temperature thermal stability when add-ratio of 2nd class alkyl base Zn-DTP increased, compared to 1st class alkyl base Zn-DTP. But anti-wear/anti-friction improved when added ratio of 1st class alkyl base Zn-DTP increased. Polyolester synthetic lube base oil of this research has better performance in oxidation stability, high temperature thermal stability and anti-wear/anti-friction properties than existing lube base oils. It shows significant performance improvement in extending lube oil exchange cycle of internal combustion engine and running mileage per unit fuel consumption. Functional synthesized lubricant (TMTP) consumption would rapidly increase in the future, together with advance in aircraft industry.
We developed functional synthetic lubricant for internal combustion engine oil, which would improve engine oil performance for internal combustion engine and extend engine life. We made base oil by synthesizing Nonanoic acid (Pelargonic acid), 1.1.1-trimethylolpropane (which has good bio-degradability) and pentaerythritol ester. We synthesized catalyst using p-toluene sulfonic acid 0.15 wt% and coloring-prevention agent hypo-phosphorus acid 0.18 wt% at 180-190 ℃. Reaction temperature was increased at the rate of 10 ℃ for every 1 hour. When acid value reached below 3, reaction was completed. After cooling and deoxidization, we washed it by distilled water two times. After dehydration and filtering, we obtained trimethylolpropane tripelargonate (TMTP) and pentaerythritol tetrapelargonate (PETP) at yields of 96 % and 98 % respectively. The polyolester of Nonanoic acid synthesized in this research had 98 % bio-degradability, which is similar to existing polyolester synthesized lubricant trimethylolpropane trioleate (TMTO) and trimethylolpropane tricaprylate (TMTC). In general, when making synthesized lubricant, they use 95 wt% base oil and additive 5 wt%. But in this research, we used 1∼4 wt% of each additive to make synthesized lubricant. We also measured, compared and examined basic properties of lubricant, such as dynamic viscosity, cold resistance, oxidation stability, high temperature/thermal stability and anti-wear/anti-friction properties. Viscosity index of lube base oil was more than 135. As viscosity nature is good and low temperature pour point was -55 ℃, we can make high quality, high functional lubricant. Viscosity nature of viscosity-index-improving- agent was better in PMA than in OCP, however, shearing safety was better in OCP. It is desirable to mix at 50 : 50 wt% dependent on industrial application. In accordance with increase of Zn-DTP added to synthetic lube base oil, anti-wear/anti-friction properties improved. If the added amount is same at fixed temperature, anti-wear/anti-friction properties of polyolester synthetic lube base oil was better by 0.212 mm than existing lube base oil. Zn-DTP, oxidation stabilizer as well as anti-wear/anti-friction additive, improved oxidation stability and high-temperature thermal stability when add-ratio of 2nd class alkyl base Zn-DTP increased, compared to 1st class alkyl base Zn-DTP. But anti-wear/anti-friction improved when added ratio of 1st class alkyl base Zn-DTP increased. Polyolester synthetic lube base oil of this research has better performance in oxidation stability, high temperature thermal stability and anti-wear/anti-friction properties than existing lube base oils. It shows significant performance improvement in extending lube oil exchange cycle of internal combustion engine and running mileage per unit fuel consumption. Functional synthesized lubricant (TMTP) consumption would rapidly increase in the future, together with advance in aircraft industry.
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