Types, characteristics and applications of main rheological AIDS

Variety

Feature

Application

Methyl Cellulose

The water system is thickened and has high efficiency, but the water resistance is not good, it is easy to be degraded by microorganisms, moldy and smelly, and the thixotropy after thickening with the system is strong, and the leveling property is not good.

Generally not used in waterborne wood coating systems

Acrylic alkali swelling type

Sensitive to pH,the compactness of the film is relatively better,and can provide medium and low shear viscosity, can prevent the film from sag, effectively prevent sedimentation, slightly affect the gloss, but improper use and system flocculation, resulting Particles require high in-tank viscosity or where strong thixotropic sag is required.

Generally used in waterborne wood primers and anti-adhesive finishes

Polyurethane associative thickener

The pseudo-plastic water resistance is good, the compactness of the coating film is good, the gloss is hardly affected, the low shear viscosity is provided, the sag is prevented from being used synergistically, and the balance of high, medium and low shear viscosity can be provided, the leveling is good, and the amount is small. Acrylic alkali solubilized thickener with better effect

Widely used in waterborne wood finishes