Using HPMC powder in water-based coating surface treatment

Using HPMC powder in water-based coating surface treatment
 

What is HPMC powder?
HPMC (hydroxypropyl methylcellulose) is a semi-synthetic cellulose ether with various functions such as thickening, film-forming, bonding, and emulsification. In water-based coatings, it is often used as a thickener, film-forming aid, binder, etc.

In water-based coatings, the role of HPMC powder
Thickening effect: HPMC can significantly increase the viscosity of water-based paint, giving it better adhesion and leveling, and reducing paint splashing and sagging.
Film-forming effect: HPMC forms a continuous film during the drying process of the coating film, enhancing the strength, toughness and wear resistance of the coating film.
Adhesion: HPMC can improve the dispersion and stability of fillers in coatings and enhance the adhesion between coatings and substrates.
Other functions: HPMC can also improve the construction performance of coatings, such as brushing properties, spraying properties, etc., and improve the water resistance and alkali resistance of the coating film.
Application of HPMC powder in surface treatment of water-based coatings
Improve the coating surface: HPMC can make the coating surface smoother, reduce the orange peel phenomenon, and improve the decorative properties of the coating.
Enhance coating film performance: HPMC can improve the hardness, scrub resistance, weather resistance, etc. of the coating film.
Special effects: By adjusting the type and dosage of HPMC, some special surface effects can be achieved, such as matte, mercerized, etc.
Why choose HPMC powder for surface treatment?
Safety: HPMC is a non-toxic, odorless, biodegradable material that is friendly to the human body and the environment.
Versatility: HPMC has a variety of functions to meet the performance needs of different water-based coatings.
Compatibility: HPMC has good compatibility with a variety of water-based resins and additives.

Note: Different types of HPMC have different properties. When selecting HPMC, you need to choose according to the specific coating formula and performance requirements.
for example:
The type of water-based paint you used (interior paint, exterior paint, wood paint, etc.)
The coating properties you want to improve (such as gloss, hardness, water resistance, etc.)
Do you have any special requirements for the dosage and addition method of HPMC?

Related questions
What is the amount of HPMC powder added? This depends on the formulation of the coating and the type of HPMC, generally 0.5-2%.
How is HPMC powder added to coatings? HPMC powder is usually added when formulating coatings. HPMC powder can be mixed with water to form a paste, and then added to the coating.
Does HPMC powder have any effect on the drying time of paint? HPMC will slightly extend the drying time of the paint, but will not significantly affect it.