- Product details
Hydroxyethyl cellulose (HEC)
Brief Description
Hydroxyethyl cellulose is a kind of non-ionic water-soluble polymer, which is made from natural macromolecular material cellulose through a series of chemical processing. It is a yellowish or white, odorless and odorless powdery solid material .
Products and Specifications
specifications | Viscosity | Appearance | Moisture ≤ | Ash ≤ | pH (1%solution) | |||
Viscosity range （1%），mpa.s | Viscosity range （2%），mpa.s | Rotor number | Revolution rpm | |||||
HE-Cellu50 | / | 25～150 | 1 | 30 | Odorlessand tasteless powder with white or yellowish color | 5.0% | 5.0% | 6.0～8.5 |
HE-Cellu300 | / | 151～450 | 2 | 30 | ||||
HE-Cellu500 | / | 451~700 | 2 | 30 | ||||
HE-Cellu1000 | / | 701~1500 | 3 | 30 | ||||
HE-Cellu2000 | / | 1501～3000 | 3 | 30 | ||||
HE-Cellu6000 | / | 4000～8000 | 4 | 60 | ||||
HE-Cellu15000 | 700～1500 | / | 3 | 30 | ||||
HE-Cellu30000 | 1501～2600 | / | 3 | 30 | ||||
HE-Cellu50000 | 2601～3400 | / | 3 | 30 | ||||
HE-Cellu100000 | 3401～6000 | / | 4 | 30 | ||||
Attention: The above viscosity values are all obtained using LVBrookfield Viscometer at 25℃.
Nomenclature of HEC
Product name | Application field code | Viscosityspecification code |
HEC | D(For latex painting) O(For petrochemical Industry ) C(For cosmetic industry) | HE-Cellu100000 HE-Cellu50000 HE-Cellu30000 HE-Cellu15000 HE-Cellu6000 HE-Cellu2000 HE-Cellu1000 HE-Cellu500 HE-Cellu300 HE-Cellu50 |
Application Properties
u High thickening efficiency and wide range of viscosity grades, to get any desired thickening efficiency
u Good compatibility with most inorganic salts and a wide range of gum and resin.
u Anti-biodegradable HEC products have excellent stability, to ensure a nice shelf life for paint.
u Good protective colloid activity, to prevent coagulation of solid particles in the coatin
u Less insoluble matter, clear and transparent aqueous solution
u Small viscosity fluctuation
u High purity, low moisture content, low ash content
Anti-biodegradationperformance
The use of an excellent HEC with anti-biodegradable properties minimizes viscosity loss.
HEC hydration time counts from the initial wetting to a moment when the solution starts to become viscous. Hydration time could be varied to meet a special requirement. HEC hydration time, apparently affected by the pH value, typically ranges from 4 to 25 minutes.
The shear rate is an important consideration when the amount of HEC is required to achieve a certain viscosity under practical conditions in industrial applications. In general, the higher the shear rate, the lower the viscosity.
The most important property of HEC is its capability to increase the viscosity of liquids and thus to act as a thickener. The thickening effect of HEC strongly depends on its concentration(depicted in the diagram below). Furthermore, theinfluence of the degree of the form of different viscosity level the thickening effect of HEC can be clearly seen. With all other.
Product applications
It has good compatibility with other material, such as pigments, auxiliaries, fillers and salts. Paints thickened with HEC are of high rheological properties and pseudo-plasticity under various shearing rates, good workability and leveling performance. It could be applied by way of brushing, roller coating or spraying, not easy to drip, sag or spatter.
Oil drilling
In oil drilling industry, high-viscosity HEC is mainly used as thickener in well-completing or finishing fluid; while low-viscosity HEC is mainly used as water loss controller. HEC used as thickener will impart good mobility and stability to various slurries necessary for drilling, completion, cementing and fracturing operations. In drilling, HEC can increase the sand carrying capability of the slurry and extend the service life of drill bits. In low-solid content completion fluid and cementing fluid, the excellent water loss control performance of HEC can prevent large amount of water in the slurry from entering into the oil reservoir and enhancing the stabilizing capability of the wall of the reservoir.
Construction
HEC can be used in building products such as concrete mix, fresh mortar, gypsum plaster or cement, to retain water in the construction process before hardening. In addition to improving water retention of building products, HEC can also extend the correction and open time of plaster or cement. It could reduce crusting, sliding and sagging phenomenon
Cosmetics and Detergents
Inshampoo, hair spray, neutralizer, conditioner and cosmetics, HEC is an effective binder, thickener, stabilizer and dispersant. In powder detergent, it is an anti-dirt -deposition agent
Macromolecule polymerization
HEC has the functions of dispersing, emulsifying, suspending and stabilizing in the polymerization or co-polymerization of synthetic resin and can be used as protective colloid. It is characterized by its high dispersing ability and the resin product obtained is of thin film, fine, uniform and loose granularity and good flowability, high transparency and easy workability.
Other
HEC other uses include paper, textile, latex additives and wallpaper paste.HEC can be used in pesticide emulsion and suspension formulations as thickener of sprayed emulsion or suspension.HEC can also be used in cleaning agent, polishing ,electroplating, printing inks, pesticides, pencil refractories, ceramics, cushion pad, tobacco, welding flux and welding agent.HEC in also used as a barrier to prevent moisture penetration into the powder in the cable.
Packaging
Net weight: 25±0.25kg / package
Inner: Polyethylene plastic film bag
Outer: Three-in-one composite paper bag or barrel
Note
Keep away from rain water, sunshine and hook during transportation.
Store in a dry and ventilated place and avoid moisture. No mixing with other chemicals.
Considering its hygroscopicity, please seal and pack againand store in a dry placeif products remain after opening.