Hydroxyethyl cellulose (coating grade)

Overview of coating grade hydroxyethyl cellulose:

Essential information

Chinese Name: hydroxyethyl cellulose

English Name: HEC, hydroyethyl cellulose

Chemical formula: C2H6O2 · x

2、 Character:

The product is white or yellowish odorless, tasteless, tasteless and easy to flow powder with 40 mesh sieving rate ≥ 99%; softening temperature: 135-140 ℃; apparent density: 0.35-0.61g/ml; decomposition temperature: 205-210 ℃; slow burning speed; equilibrium temperature content: 23 ℃; 6% at 50% RH, 29% at 84% RH.

It is soluble in cold water and hot water, and generally insoluble in most organic solvents. When pH value is in the range of 2-12, the viscosity changes little, but when pH value is beyond this range, the viscosity decreases.

Chuangyao coating grade instant hydroxyethyl cellulose is widely used in the coating industry due to its uniform distribution of substituents, sufficient, strong antibacterial property and relatively stable viscosity. Its main advantages are the process and raw materials, and its cost is much lower. At the same time, it has the properties of instant, low splashing, good film-forming, good flow and leveling, low sagging, high brush viscosity, excellent pigment performance and excellent biological stability.

Chuangyao hydroxyethyl cellulose instant cellulose is added into water emulsion coating as thickener and film forming agent, which can make the product stable in storage, uniform in color development, good in rheology and easy in mechanical construction, and help to improve the flexibility and luster of the coating; an expert from the former Soviet Union introduced that the waterproof coating obtained by adding uniform hydroxyethyl cellulose can form film quickly on any type of surface, with performance Good. It has good elasticity, air tightness and water resistance.

3、 Application performance of chuangyao hydroxyethyl cellulose coating:

1. As a protective colloid, the stability of emulsion polymerization system can be improved in a wide pH range.

2. Make pigments, fillers and other additives evenly dispersed in the paint

3. Make the paint have excellent color adhesion effect

4. It can obviously improve the viscosity of latex coating

5. Improve the leveling of coating

6. Improve the splashing and sagging resistance of the coating, so as to improve the construction performance of the coating

4、 Chuangyao hydroxyethyl cellulose coating grade adding method:

1. In the process of pigment grinding, dry powder is added to the grinding tank

2. In the process of pigment grinding, pre dissolved solution is added

3. In the process of pigment grinding, the pre dispersed slurry is added. General slurry medium: acidified water, organic solvent, etc