1. Technical requirements
Quality Standard：Q/SYH004-2002
| project | standard |
| Exterior | white or light yellow powder |
| molar substitution（MS) | 2.0-2.3 |
| Water insoluble matter（%） | ≤0.5 |
| Loss on drying（WT%) | ≤7.0 |
| Residue on ignition | ≤5.0 |
| PH value | 6.0-8.5 |
| Viscosity (mPa.s) 2%Aqueous solution at 20 degrees Celsius | 5-100000 |
2. Optional performance improvement
Cellulose ether HE series, that is, hydroxyethyl cellulose, is a white to milky white powder. It can be dissolved in both hot water and cold water, but it is not easy to dissolve in organic solvents. Jinshi brand cellulose ether HE series products have strong water retention, film forming, salt resistance and thickening effects. It also has excellent color compatibility and is an ideal additive in latex applications.
Hydroxyethyl cellulose HEC is a commonly used thickener in coatings and has the following advantages:
(1) Strong versatility Hydroxyethyl cellulose HEC is a non-ionic water-soluble polymer that can be used in a wide pH range (2-12). It can be mixed with the components in general coatings (such as pigments, additives, soluble salts and electrolytes) without abnormal phenomena. the
(2) Good construction. The coating thickened with hydroxyethyl cellulose HEC has pseudoplasticity, so it can be applied by brushing, spraying, roller coating and other construction methods. Advantages, leveling is also better. the
(3) There is no bad effect on the coating film. Due to the inconspicuous water surface tension characteristics of the HEC aqueous solution, it is not easy to foam during construction and production, and there is less tendency to produce volcanic holes and pinholes. the
(4) Good color development. Hydroxyethyl cellulose HEC has excellent miscibility with most binders and colorants, so that the prepared paint has good color stability and consistency.
(5) Good storage stability. During the storage of the paint, it can maintain the suspension and dispersibility of the pigment, without the problems of floating and blooming. There is less water layer on the surface of the paint. When the storage temperature changes, its viscosity remains the same. more stable.