BST-Si-638 Silicone-Based Anti-Graffiti Easy-Clean Nanocoating

This product is an organic-inorganic hybrid silicone-based nanocoating, prepared by plasma-assisted atomic layer deposition process. It uses special silicone resin as the core film-forming substance, incorporating nano functional fillers and special-purpose additives, compounded through a special process. The coating thickness can be precisely controlled at the nanometer level, combining excellent anti-graffiti, easy-cleaning, weather resistance, and anti-corrosion performance. It also features high transparency and high adhesion, forming a dense protective film on various substrate surfaces, effectively blocking the adhesion of graffiti paint, oil stains, dust, and other contaminants. Contaminants can be easily removed by simple wiping without damaging the substrate or the coating itself. It is widely used for surface protection in municipal facilities, building curtain walls, transportation equipment, optical components, and other fields.

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※ Anti graffiti and easy to clean

The low surface energy characteristics effectively repel water-based and oil-based graffiti materials as well as self-adhesive labels. Contaminants cannot firmly adhere, achieving an effect of "no sticking, easy removal" without the need for strong acid or alkali cleaners, avoiding substrate damage and greatly reducing cleaning and maintenance costs. It also features a lotus-effect self-cleaning function, where rainwater can wash away surface dust, achieving natural self-cleaning.

※ Nano level protection

Using plasma-assisted atomic layer deposition process, the coating thickness is controllable with uniform element distribution, forming a dense nano-structure protective film on the substrate surface. It blocks contaminant penetration without affecting the substrate appearance and breathability, especially suitable for high-end applications such as precision components and optical elements.

※ High compatibility and adhesion

Compatible with a variety of substrates, including concrete, ceramic tiles, metals (stainless steel, aluminum, copper, etc.), glass, plastics, wood, optical components, microelectronic devices, etc. It bonds tightly to the substrate, is not easy to peel or blister, and provides long-term protection.

※ Long lasting and durable

Excellent weather resistance, UV resistance, high and low temperature resistance, and corrosion resistance. It resists acid rain and atmospheric pollutant erosion, and does not yellow, age, or fail during long-term outdoor use. It also possesses a certain degree of abrasion resistance, capable of withstanding daily minor friction.

※ Easy construction

The single-component product is ready for use upon opening the container. Various construction methods can be adopted, including spray coating, roller coating, and brush coating. It offers high construction efficiency and fast drying speed, suitable for large-area and complex-structure surface construction.

Item	BST-Si-638	Testing Standard
Appearance	Colorless Transparent Liquid	Visual inspection
Density（25℃) g/ml 25℃	0.92±0.01	GB/T 4472-2011
Solid content（%）	30±0.1	ASTM D1259
Viscosity (cps)	50-100	GB/T 2794-2013
pH value	8	Precision pH meter measurement

Item	BST-Si-638	Testing Standard
Drying time（25℃）	Surface dry <30 min; hard dry <24 h	ASTM D1640-2014
Coating thickness（μm）	≤30	GB/T 13452.2-2008
Adhesion	≤ Class 1	GB/T9286-1998
Hardness	Pencil hardness 4H	GB/T 6739-2006
Hydrophobic angle (WCA, room temperature)	＞100°	Contact angle measuring instrument, deionized water
Surface tension	≤ 24 dyne	Contact angle measuring instrument, room temperature
Anti-graffiti performance	Dry-wipe removal rate of oil-based pen graffiti ≥99.9%	Simulated Graffiti Test
Easy-clean performance	Excellent, dust can roll off with water droplets	Simulated outdoor dust environment testing
Light transmittance	Visible light transmittance loss <1%, does not affect the substrate's original color	Transmittance meter test（550nm wavelength)
Weather resistance	No abnormality after 1000 h accelerated aging test	GB/T1865-2009
Salt spray resistance	Salt spray resistance≥1000h， Coating without corrosion or discoloration	GB/T10125-2021
Acid and alkali resistance	pH 2–12, immersion for 72 h, no corrosion, no discoloration, no peeling	Acid alkali soaking: customized testing

Applicable Substrates:

Construction: concrete, ceramic tiles, stone, glass curtain walls, aluminum veneer panels, metal doors and windows, etc.
Transportation: subway ticket gates, bus stop signs, high-speed railway and aircraft sheet metal, wind power fan blades, automobile bodies, construction machinery vehicle surfaces, etc.
Electronics and Optics: optical components, microelectronic devices, home appliance housings, mobile phone covers, etc.
Others: municipal facilities (billboards, trash bins, manhole covers), medical devices, historical building surfaces, solar panels, etc.

Application Scenarios:

Municipal engineering: anti-graffiti and anti-fouling protection for urban public facilities, reducing cleaning and maintenance costs.
Construction field: anti-fouling, anti-graffiti, and weather-resistant protection for commercial complex curtain walls, office building exterior walls, and residential exterior walls.
Transportation field: anti-fouling and easy-clean protection for high-speed railway, EMU, aircraft, and automobile surfaces; anti-icing and anti-peeling protection for wind power fan blades.
Electronics and optics field: anti-reflection and anti-fouling protection for optical components, passivation protection for microelectronic devices, anti-fingerprint and anti-fouling protection for home appliance housings.
Special fields: antibacterial protection for medical devices (certain models), surface protection for historical buildings, self-cleaning protection for solar panels.