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JDVII-6831 Polymethacrylate (PMA) VII
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Viscosity Index Improver
Email:icason@icason.com
Product Introduction
JDVII-6831 is a solution of polymethacrylate in a highly refined mineral oil. It is a viscosity index improver specially designed for hydraulic fluids with high shear stability. It is suitable for the modulation of hydraulic oil, especially low-temperature hydraulic oil, and can effectively improvesthe viscosity indexof the oil. Under the premise of ensuring shear stability., it has the double effects of improving the viscosity index and reducing the pour point, and effectively saves the product formula cost.
Product Performance
With narrow molecular weight distribution, it has good low temperature fluidity, excellent shear stability, and can effectively improve the viscosity index and inhibit wax crystallization.
Especially for hydrotreating base oil, it has excellent pour point depressant effect.
It has excellent filtration performance and anti-emulsification performance.
Physical Properties
| Item | Typical Value |
| Kinematic viscosity (100℃) / mm2/s | 1180 |
| Flash point / ℃ | 170 |
| Total acid number / mgKOH / g | 0.12 |
| Chroma | <0.5 |
| Shear stability index P-SSI 30 passes / % | 4.7 |
| Thickening capacity, mm2/s | 6.0 * |
* Noted: Add 10% viscosity index improver to HVI 150 base oil to make thickening oil, and measure its viscosity increase value at 100℃, which is the thickening capacity.
Recommended Dosage
Recommended dosage: The recommended dosage for JDVII-6831 is 1 to 10%, depending on the actual application. For details, please consult our additive application engineer.
Packing And Precautions
Net weight: 170 Kg/drum, packed in 200 liter metal drum. Non-flammable, non-explosive, non-corrosive.
Please refer to SH/T0164 for transportation, storage and handling. Best Blending temperature: 50-60℃. Storage temperature below 60℃, avoid repeated heating, keep away from heat.
For more physical and chemical indicators, please refer to the following detailed data.
The evaluation is carried out according to SH/T0622-2007 standard.
Plan 1
10% (mass fraction) JDVII-6831 is added into Dalian HVI150 base oil, heated to 60℃~70℃ , and stirred evenly to obtain the sample. The shear stability index (diesel injector method), thickening ability, low temperature dynamic viscosity, pour point and other performance parameters of the sample are deter- mined.
| Sample Name | Item | Typical Value | Test Method |
| HV150 | Low temperature dynamic viscosity (-20℃) , mPa.s | 2250 | GB/T6538 |
| Pour Point / ℃ | -12 | GB/T3535 | |
| Kinematic viscosity (100℃) , mm2/s | 5.13 | GB/T265 | |
| Kinematic viscosity (100℃) , mm2/s | 1250 | GB/T265 | |
| Thickening capacity (glue liquid), mm2/s | 6.2 | SH/T0622 | |
| Diesel Injector Shear / SSI | 4.7 | 30 passes | |
| Diesel Injector Shear / SSI | 8.6 | 250 passes | |
| KRL / SSI | 45 | NB/SH/T0845 | |
| Low temperature dynamic viscosity (-20℃) , mPa.s | 2650 | GB/T6538 | |
| Pour Point / ℃ | -30 | GB/T3535 |
Plan 2
Using imported hydraulic oil compound, a certain proportion of imported ERTO4 and GS500N-4 base oil and pour point depressant, and using viscosity index improver JDVII-6831 and Evonik V8-310 respectively to make HV 46, the kinematic viscosity, viscosity index, pour point, air release value, demulsification, liquid phase corrosion and shear stability of the oil are measured.
Blending scheme
| Base Oil | Complex agent | VII | Pour Point Depressant | |
| 1 | ETRO4/GS500N-4=65/35 | HITEC 521 | JDVII-6831 | JDPPD-8248 |
| 2 | ETRO4/GS500N-4=65/35 | HITEC 521 | V8-310 | JDPPD-8248 |
| Amount | 100% | 0.85% | 7% | 0.2% |
Experimental analysis results
| Analyze Projects | 1 | 2 | Test Methods |
| Kinematic viscosity (40℃) , mm2/s | 49.03 | 45.16 | GB/T 265 |
| Kinematic viscosity (100℃) , mm2/s | 9.645 | 8.875 | GB/T 265 |
| Viscosity index | 186 | 181 | GB/T 1995 |
| Pour Point / ℃ | -42 | -36 | GB/T3535 |
| Air release value (50℃) , min | 3.0 | 3.0 | SH/T 0308 |
| Demulsibility (40-37-3) 54℃, min | 5 | 6 | GB/T 7305 |
| Liquid phase corrosion method B | No Rust | No Rust | GB/T 11143 |
| Kinematic viscosity of 40℃ change after 250 passes, % | 0.87 | 1.35 | SH/T 0103 |
Plan 3
In dalian HVI150 base oil, 1%, 2%, 3%, 6%, 10% (mass fraction) JDVII-6831 were added respectively, heated to 60℃~70℃, and stirred evenly to obtain the sample, and the viscosity index parameters of the oil sample were determined.
Analysis Results of Viscosity Index Test
| Item | Amounts | Kinematic viscosity mm2/s | Viscosity index | Increase Value | |
| 100℃ | 40℃ | ||||
| HV150 | 0 % | 5.13 | 30.11 | 97 | |
| 1 % | 5.66 | 32.78 | 112 | 15 | |
| 2 % | 6.15 | 35.53 | 121 | 24 | |
| 3 % | 6.78 | 38.29 | 135 | 38 | |
| 6 % | 8.76 | 47.48 | 166 | 69 | |
| 10 % | 10.83 | 56.82 | 186 | 69 | |
Conclusion
JDVII-6831 can be used in low temperature hydraulic oil blending, save the amount of pour point depres- sant, and effectively improve the viscosity indexof oil. This product is processed by advanced technology. Compared with advanced products at home and abroad, it is environmentally friendly and has better economy under the prem- ise of ensuring thickening ability and shear stability. It is the best choice of viscosity index improver.
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