Name: Hydrophilic Anti-Fog Coating Resin HF-100
Brand: Coatingsink
SKU: hydrophilic-anti-fog-coating-hf100
Availability: InStock

Question 1

How does a hydrophilic anti-fog coating prevent fogging on lenses and visors?

Accepted Answer

Conventional surfaces have contact angles of 40–70° with water, causing condensed moisture to form discrete droplets that scatter light (fogging). HF-100's hydrophilic polyurethane chemistry achieves a contact angle below 5°, spreading condensed water into an optically flat, invisible film rather than droplets. This 'super-wetting' effect maintains full optical clarity even in rapid temperature transitions such as moving from cold to warm environments.

Question 2

How durable is the HF-100 anti-fog coating compared to surfactant-based anti-fog treatments?

Accepted Answer

Surfactant-based anti-fog treatments wash off quickly (typically lasting only hours or days) because they work by physical adsorption rather than covalent bonding. HF-100 is a crosslinked polyurethane network that bonds permanently to the substrate, maintaining class 1 fog resistance per BS EN 168 through at least 200 cleaning cycles with mild soap and water. Taber abrasion testing confirms <10% haze increase at 100 cycles (100g load), suitable for safety eyewear standards.

Base Chemistry	hydrophilic polyurethane
Film Thickness	3–8 µm
Fogging Test (BS EN 168)	class 1
Contact Angle (water, cured)	<5°
Abrasion Resistance (Taber, 100g 100 cycles)	<10% haze increase

Hydrophilic Anti-Fog Coating Resin HF-100

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