Selection principle and scheme of water-based ink (ink wash) dispersant

Applicable powders:nano metal oxides such as nano TiO ₂, transparent iron oxide, nano ZnO, Al ₂ O3, SiO ₂, zirconia, bismuth vanadate, etc;

First, clarify the core logic: the three major judgment criteria for flocculation

I、 First, clarify the core logic of titanium dioxide settling and the underlying logic and basis for selecting titanium dioxide dispersantsRutile and rutile titanium dioxide have a density of 4.2g/cm ³, while water only has a density of 1g/cm ³. The physical density difference is extremely large, and the particles are naturally prone to gravity settling, leading to layered settling; There are a large number of hydroxyl (- OH) groups on the surface of particles, and these particles in aqueous systems are prone to agglomeration and form hard precipitates.

Metal oxides (TiO ₂, Fe ₂ O3, Fe ∝ O3, Al ₂ O3, SiO ₂ ZnO、 The surface of cobalt blue/chromium green ceramic oxides, ITO, etc. is rich in hydroxyl groups and exhibits polarity and acidity. The core logic requirements for dispersants are:

How to choose dispersants for carbon black?Carbon black dispersant, commonly referred to as carbon black dispersant, is a special additive used to solve the problem of easy agglomeration and difficult dispersion ofcarbon black in coatings, inks and other systems. Its core function is to

The following provides a complete explanation of the principles, classification, material matching, scene pain points, and screening methods for adapting pigments, carbon black, metal oxides, and inorganic fillers.

Water based digital inkjet dispersants require the selection of polymer block/comb dispersants (anionic/nonionic), mainly depending on the type, particle size, and system viscosity of the dispersed pigment, its nozzle compatibility, storage stability, and environmental requirements.

How to choose anti floating color dispersant?I、 Reasons for floating color phenomenonII、 Conditions that must be met for anti floating colorsIII、 Recommended dispersants

How to Choose a Water-Based Silicone Defoamer That Won't Cause Pinholes?I. The Principle of Pinholes Caused by Water-Based Silicone Defoamers

Carbon black dispersants are additives specifically designed to address the tendency of carbon black to agglomerate and its difficulty in dispersing within systems such as coatings and inks. Their primary function is to prevent the flocculation and agglomeration of carbon black particles, ensuring color uniformity and stability.

How to choose dispersants for coatings and inks in epoxy resin systems? This dispersant should not only reduce the viscosity of the system, but also not react with epoxy resin and curing agent.Simultaneously, it should meet the requirements of reducing viscosity, dispersion, non reactivity, and stable storage.