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Release time：2024-07-25 09:49:29 Author：奥泽源
I.Properties and characteristics
CMC is white or light yellow powder, odourless, non-toxic, tasteless, hygroscopicity is strong, dissolves into a viscous liquid in water, is a polyanionic electrolyte, non-fermentable, has salt resistance and thermal stability, good film formation property, used in oil drilling fluid system, can increase the viscosity of drilling fluid and adjust the fluidity of the system, has excellent filtration loss reduction function.
II. Technical indicators
Technical data for sodium - carboxymethylcellulose CMC-LV
mud
| Properties | Indicators |
| Starch or starch derivatives content | No |
| 600r/min viscometer report | ≤90.0 |
| Water yield of API slurry,ml | ≤10.0 |
Technical data of sodium -carboxymethylcellulose CMC-HV
mud
| Properties | Indicators | |
| Starch or starch derivatives content | No | |
| 600r/min viscometer report | In deionised water | ≥30.0 |
| In salt water 40g/l | ≥30.0 | |
| In saturated water | ≥30.0 | |
| Water yield of suspension with saturated salt, ml | ≤10.0 | |