Nano silica dispersion for antifouling and heat resistant coatings

&Nbsp; Nano silica is used in electronics, medicine, biology, rubber, plastics, paint, coating, ceramics and other industries
With the wide application of nano materials, nano powder materials “ Easy to agglomerate and difficult to disperse ” The problem of nano silicon dioxide has become more and more prominent, and nano silicon dioxide is no exception
This not only requires special dispersion equipment and complicated operation, but also obtains only the dispersion of silica aggregates, far from the dispersion of single nanoparticles   This is because the nano silica particles are extremely small, with high surface atomic ratio and large specific surface area
The particles are easy to attract each other through the action of van der Waals force, hydrogen bond and covalent bond, forming secondary particle size and tertiary particle size, i
e
aggregates
The interaction force between the particles of these aggregates (the sum of van der Waals force, hydrogen bond and covalent bond) is often more than 30kj/mol
However, the shear force of general mixing equipment can only reach 10-20kj/mol, so it can not be truly “ Disaggregation &rdquo Fully dispersed, even if some aggregates are temporarily depolymerized under the action of external force, they will reunite after the external force is removed& Nbsp& Nbsp& Nbsp& Nbsp& Nbsp; Using molecular dispersion technology, nano silica powder is uniformly dispersed into water, butyl acetate, isopropanol, butanone, ethylene glycol, diethylene glycol   Acetone DMF and other solvent media, and the obtained dispersion has good stability
In coatings, inks, paints, plastics, rubber, pet, other polymer materials and other products

model	appearance	particle size NM	content %The	solvent	pH value	product features and Applications
ug-s01w	white paste	15 &Nbsp;	20	water	5-7	good stability and levitation Increase hardness, wear resistance, heat resistance and antifouling
ug-s01n	transparent	15	25	water	6-7	it has good stability and is more suitable for transparent systems
ug-s03d	white	80	40	water	6-8	polishing, coating, glue, textile, etc
ug-s01a	translucent liquid	15  &Nbsp;	30	water	3-6	stability and transparency, widely used in Coating, rubber, leather, plastic, printing, textile, electroplating and other industries
ug-s01b	transparent liquid	15  &Nbsp;	30	water	9-11	stable and transparent, widely used in polishing, coating, rubber, leather, plastic, printing, textile, electroplating and other industries
ug-s01d &Nbsp;	translucent	15	30	butyl acetate or butanone	----	suitable for oily systems with good mutual solubility It has the functions of suspension, rheology, reinforcement, thixotropy and friction resistance in coatings and inks Increase hardness,   Improve heat resistance and antifouling
ug-s01y &Nbsp;	translucent	15	25	PMA &Nbsp;	----	it is applicable to oil-based systems with good mutual solubility& Nbsp; In coatings and inks, it plays the role of suspension, rheology, reinforcement, thixotropy, improving friction resistance, etc
ug-s01ci &Nbsp;	translucent	15	30	isopropanol &Nbsp;	----	suitable for solvent based systems, with thickening, thixotropic and anti sagging effects Increase hardness, wear resistance, heat resistance, antifouling and aging resistance
ug-s01cp &Nbsp;	translucent liquid	30± five	30	propylene glycol &Nbsp;	----	suitable for solvent based systems, with thickening, thixotropic and anti sagging effects
ug-s01ce	white paste	15± five	30	ethanol &Nbsp;	---	suitable for solvent based systems, with thickening, thixotropic and anti sagging effects

  Different particle sizes, such as 30nm, 60NM, 100nm,   Other solvents, various concentrations can be customized