News Details
Oil compound antioxidants
2018-1-11 11:20:49
Oil compound antioxidants
Since the 1970s, there has been little research on the main antioxidant of lubricating oil, and the research of oil compound antioxidants will be the main research direction of the present and future. The purpose of the study of oil compound antioxidants is to meet the requirements of lubricants against oxygen performance under different conditions.
For example, the compound use of the commonly used antioxidant PANA and DODPA successfully solved the poor performance of PANA high temperature performance (producing precipitation, etc.) and DODPA anti-oxygen activity. The antioxygenation of alkylated diphenylamine or confluent shielding phenol is poor when used alone in the base oil of polyalpha-olefin and ester oil, especially the anti-oxygen performance of alkyl diphenylamine. When the combined use of the two, even the total amount of antioxidants, the anti-oxygen performance was significantly improved.
For example, compounds containing organic copper compounds can be used to modulated SE/CC, SF/CC, SG/CC levels of other internal combustion engines. It can be seen that the presence of compound antioxidant can meet the requirements of different lubricants against oxygen performance. At the same time, the compound antioxidant can help the upgrading of lubricating oil. Therefore, since the 1970s, oil compound antioxidants have dominated the research of oil antioxidants, and it is expected to be the main direction of antioxidant research in the future.
Peroxide decomposition type antioxidants are mainly various kinds of metal (such as copper, zinc, molybdenum and antimony) of alkyl dithio phosphate compounds and carbamate compounds, have certain antioxidant capacity, used in internal combustion engine oil, anti-wear and anti-friction, antioxidant and extreme pressure.
In particular, ZDDP products of dialkyl dithiophosphate (ZDDP) have good anti-oxygen and anti-corrosion properties and certain anti-wear properties and anti-extreme pressure properties. Since since the advent, has been the engine oil and industrial oil indispensable important component, it can effectively prevent engine bearing corrosion, can inhibit oil viscosity caused by high temperature oxidation and growth, and thus occupies an important position in the lubricating oil additive.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is the main raw materials of phenol, phosphorus oxychloride, phosphorus trichloride, phosphorus oxychloride, phosphorus trichloride belong to highly toxic chemicals, state control chemicals. Through raw material phenol, triclosan phosphorous and trichloride phosphorus, the direct method of trichloro phosphorus is used to direct (also known as thermal) and the indirect method of trichloride phosphorus (also known as cold method).
According to the relevant state regulations, tppi is currently exported to 9 kinds of dangerous goods.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
The anti-oxidative properties of different ZDDP (T202, T203, T204 and T205) were adjusted to the base oil by 0.25% of the mass fraction of the different ZDDP (T202, T203, T204 and T205). It can be seen that ZDDP series anti - oxygen anti - corrosion agent has good oxidation resistance in 125N base oil. The antioxidation effect of T204 is better in HVIW H150 base oil. In the synthetic oil PAO6, ZDDP series antioxidant has a good antioxidant effect.
There are many kinds of organic copper salts, mainly organic carboxylic acid copper salts, copper salts of thiophosphate, copper salts of thiocarbamate, copper sulfide, copper salts, etc. It is a kind of lubricant antioxidant with low dose and high temperature oxidation resistance.
It can effectively control the increase of oil viscosity caused by oxidation, and has good compatibility with high temperature detergents and ash dispersants. It is an important additive for the preparation of high-grade internal combustion engine oil. Organic copper salts can eliminate lively alkyl free radicals and oxygen free radicals, but copper ions in a certain extent, it has a catalytic decomposition of hydrogen peroxide, therefore the applications of antioxidants is still controversial.
Organic molybdenum compounds are a kind of important peroxide decomposing antioxidant, which can also effectively reduce the friction factor of oil products. For example, molybdenum diphenyl dithiophosphate is a kind of lubricant additive with good oil solubility and anti-wear effect, which is the main component of the mixed oil of high efficiency internal combustion engine. It can also be used in gear oil, hydraulic oil, crankcase oil and metal processing oil to reduce friction and reduce wear and tear.
In recent years, fuel economy has become an international hot issue, reducing friction and improving the anti-oxidation performance is evident in the new generation of oil products in Europe and America. For example, molybdenum carbamate antioxidant has excellent anti-friction properties, which can help the internal combustion engine oil through the new specification energy-saving bench test; Molybdenum ammonia complex has good oxidation resistance and excellent antifriction property, Shigeki Matsui, etc with long chain alkyl molybdenum ammonia complex 0.02% molybdenum (by mass fraction) modulation is a kind of low friction factor, small grinding spot diameter, and a very good lubricating oil detergency. This whole formula containing molybdenum hydrate was tested for 10 points (i.e., full marks) with 1.5% soot.
Researchers have also introduced an antifriction performance of molybdenum ammonia complex, its friction factor in oil than molybdenum dialkyl dithiocarbamate, someone will be add to the fuel oil, in order to improve the fuel oil oxidation resistance and storage stability.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Since the 1970s, there has been little research on the main antioxidant of lubricating oil, and the research of oil compound antioxidants will be the main research direction of the present and future. The purpose of the study of oil compound antioxidants is to meet the requirements of lubricants against oxygen performance under different conditions.
For example, the compound use of the commonly used antioxidant PANA and DODPA successfully solved the poor performance of PANA high temperature performance (producing precipitation, etc.) and DODPA anti-oxygen activity. The antioxygenation of alkylated diphenylamine or confluent shielding phenol is poor when used alone in the base oil of polyalpha-olefin and ester oil, especially the anti-oxygen performance of alkyl diphenylamine. When the combined use of the two, even the total amount of antioxidants, the anti-oxygen performance was significantly improved.
For example, compounds containing organic copper compounds can be used to modulated SE/CC, SF/CC, SG/CC levels of other internal combustion engines. It can be seen that the presence of compound antioxidant can meet the requirements of different lubricants against oxygen performance. At the same time, the compound antioxidant can help the upgrading of lubricating oil. Therefore, since the 1970s, oil compound antioxidants have dominated the research of oil antioxidants, and it is expected to be the main direction of antioxidant research in the future.
Peroxide decomposition type antioxidants are mainly various kinds of metal (such as copper, zinc, molybdenum and antimony) of alkyl dithio phosphate compounds and carbamate compounds, have certain antioxidant capacity, used in internal combustion engine oil, anti-wear and anti-friction, antioxidant and extreme pressure.
In particular, ZDDP products of dialkyl dithiophosphate (ZDDP) have good anti-oxygen and anti-corrosion properties and certain anti-wear properties and anti-extreme pressure properties. Since since the advent, has been the engine oil and industrial oil indispensable important component, it can effectively prevent engine bearing corrosion, can inhibit oil viscosity caused by high temperature oxidation and growth, and thus occupies an important position in the lubricating oil additive.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is the main raw materials of phenol, phosphorus oxychloride, phosphorus trichloride, phosphorus oxychloride, phosphorus trichloride belong to highly toxic chemicals, state control chemicals. Through raw material phenol, triclosan phosphorous and trichloride phosphorus, the direct method of trichloro phosphorus is used to direct (also known as thermal) and the indirect method of trichloride phosphorus (also known as cold method).
According to the relevant state regulations, tppi is currently exported to 9 kinds of dangerous goods.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
The anti-oxidative properties of different ZDDP (T202, T203, T204 and T205) were adjusted to the base oil by 0.25% of the mass fraction of the different ZDDP (T202, T203, T204 and T205). It can be seen that ZDDP series anti - oxygen anti - corrosion agent has good oxidation resistance in 125N base oil. The antioxidation effect of T204 is better in HVIW H150 base oil. In the synthetic oil PAO6, ZDDP series antioxidant has a good antioxidant effect.
There are many kinds of organic copper salts, mainly organic carboxylic acid copper salts, copper salts of thiophosphate, copper salts of thiocarbamate, copper sulfide, copper salts, etc. It is a kind of lubricant antioxidant with low dose and high temperature oxidation resistance.
It can effectively control the increase of oil viscosity caused by oxidation, and has good compatibility with high temperature detergents and ash dispersants. It is an important additive for the preparation of high-grade internal combustion engine oil. Organic copper salts can eliminate lively alkyl free radicals and oxygen free radicals, but copper ions in a certain extent, it has a catalytic decomposition of hydrogen peroxide, therefore the applications of antioxidants is still controversial.
Organic molybdenum compounds are a kind of important peroxide decomposing antioxidant, which can also effectively reduce the friction factor of oil products. For example, molybdenum diphenyl dithiophosphate is a kind of lubricant additive with good oil solubility and anti-wear effect, which is the main component of the mixed oil of high efficiency internal combustion engine. It can also be used in gear oil, hydraulic oil, crankcase oil and metal processing oil to reduce friction and reduce wear and tear.
In recent years, fuel economy has become an international hot issue, reducing friction and improving the anti-oxidation performance is evident in the new generation of oil products in Europe and America. For example, molybdenum carbamate antioxidant has excellent anti-friction properties, which can help the internal combustion engine oil through the new specification energy-saving bench test; Molybdenum ammonia complex has good oxidation resistance and excellent antifriction property, Shigeki Matsui, etc with long chain alkyl molybdenum ammonia complex 0.02% molybdenum (by mass fraction) modulation is a kind of low friction factor, small grinding spot diameter, and a very good lubricating oil detergency. This whole formula containing molybdenum hydrate was tested for 10 points (i.e., full marks) with 1.5% soot.
Researchers have also introduced an antifriction performance of molybdenum ammonia complex, its friction factor in oil than molybdenum dialkyl dithiocarbamate, someone will be add to the fuel oil, in order to improve the fuel oil oxidation resistance and storage stability.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian