organic pigment dispersant

Nano Metal Oxide Dispersants

Selection Guide for Dispersants of Photovoltaic Silicon Wafer Nano-Microsilicon Powder (Particle Size of Crystalline Silicon Nano-Microsilicon Powder 10-200nm)

I、 First, distinguish the four types of defoamers (advantages and disadvantages+applicable scenarios)

First, clarify the powder characteristics:The surface of polysilicon powder is covered with a natural silicon dioxide oxide layer (containing silanol groups, with an isoelectric point of approximately 2 to 3), and due to its high powder density, it is highly prone to sedimentation. During the preparation process, it is strictly prohibited to introduce sodium, potassium, or heavy metal ions to prevent impurities from compromising the purity of the silicon material and interfering with subsequent smelting and battery manufacturing processes.It is divided into two major scenarios: water-based slurries and solvent-based slurries (ethanol/isopropanol system), while also distinguishing between two applications:① A wet grinding and purification process based on silicon wafer cutting waste liquid to achieve high-value regeneration of recycled silicon powder suspension② Silicon-based conductive pastes and inks suitable for high-temperature sintering processes with low residual carbon characteristics

Selection Principles and Solutions for Dispersants of Electronic-grade Nano Zirconia (3Y/8Y-YSZ, MLCC, Optical Films, Substrates, UV Optical Adhesives)

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