Special Coating

SWCNT modified coating with boosted weather resistance, flexibility, toughness, permanent antistatic and enhanced mechanical performance

Conventional special coatings often face trade-offs. Traditional antistatic formulas based on small-molecule additives suffer from blooming, poor weathering and crack failure under bending. Carbon black conductive coatings require high loading, making the coating rigid and brittle. Under long-term UV radiation, temperature cycling and humid conditions, these coatings easily chalk, lose gloss and lose adhesion. It is difficult to combine flexibility, crack resistance, weathering stability and permanent static dissipation in one coating system.

Our solution adopts single-walled carbon nanotubes (SWCNT) as nano reinforcing and functional filler, compatible with epoxy, PU, acrylic, fluorocarbon, polyurea, waterborne, solvent-borne and powder coating systems. At ultra-low loading, uniformly dispersed SWCNTs form a continuous nano-network inside the paint film. It simultaneously improves adhesion, impact resistance, flexibility, weathering stability and delivers stable permanent antistatic performance, resolving the conflict between mechanical durability, weather resistance and static protection.

Core Advantages

✅ Superior weathering & anti-aging performance SWCNT network restrains UV-induced degradation of resin matrix, improving UV resistance, humidity and salt spray tolerance, delaying chalking, gloss loss and discoloration for long outdoor service life.
✅ High toughness & flexible, crack-resistant Different from brittle carbon-black-filled films, SWCNT bridges cracks and dissipates stress. The coating can bend and follow substrate deformation, ideal for thin sheets and flexible skins, resisting cracking under thermal cycling.
✅ Permanent humidity-independent antistatic, non-blooming Interconnected conductive network dissipates static charge stably. No migration or blooming contamination on surface, suitable for cleanroom and precision electronics.
✅ Enhanced comprehensive mechanical properties Improved adhesion, impact resistance, abrasion and scratch resistance. The nano network disperses external stress and reduces film damage risk.
✅ Ultra-low loading, wide color freedom Minimal SWCNT dosage brings little interference to base color and pigments. Light-color, tinted and semi-transparent functional coatings are available, not limited to black carbon-black formulas.
✅ Compatible with standard coating processes Works with spray, roller, dip, electrostatic and powder coating. Existing spraying equipment and production lines can be reused, compatible with waterborne, solvent-free and solvent systems.
✅ Stable batch performance Pre-dispersed SWCNT slurry avoids nano agglomeration. Consistent resistivity, flexibility and weathering indicators batch after batch.

Item	SWCNT Modified Special Coating	Carbon Black / Small-molecule Antistatic Coating
Filler Loading	Ultra-low: 0.02–0.3wt%	Carbon black: 4–12wt%; Small molecule antistatic agent: 2–6wt%
Flexibility & Toughness	Good flexibility, bendable, crack resistant, stable conductivity after deformation	High carbon black loading leads to brittle film, easy cracking; small-molecule system loses static function after bending
Weathering Resistance	UV, humidity and salt spray resistant, long-term anti-chalking	Small-molecule grades degrade quickly; carbon black coatings tend to gloss loss & crack outdoors
Antistatic Durability	Permanent, humidity independent	Small molecule additive blooms and decays; carbon black causes uneven conductive spots
Color Option	Light color, tinted, semi-transparent available	Mostly limited to black, poor color adjustability
Mechanical Performance	Adhesion, impact & abrasion resistance improved	High carbon black loading reduces adhesion and impact toughness

Technical Principle

Single-walled carbon nanotubes with ultra-high aspect ratio disperse evenly inside coating resin. The nanotube network bridges cracks and releases stress, delivering toughness, flexibility and better mechanical strength. Inherently stable SWCNT blocks UV and moisture penetration to improve weathering and anti-aging. Interconnected nanotube pathways build stable conductive network for ESD / antistatic protection, realizing integrated mechanical protection, weather resistance and static control.

Application Fields

Military Special Protection: Functional protective coating for armor & aircraft skins, flexible ESD weatherable skin coating
New Energy: ESD & weather-resistant coating for energy storage cabinets, battery enclosures, PV brackets
Semiconductor & Electronics: ESD topcoat for cleanroom equipment, carriers and tooling
Rail Transit: Antistatic weatherable flexible coating for interior and lightweight structural parts
Chemical & Explosion-proof: Long-term ESD anticorrosive coating for pipes, tanks and hazardous-area equipment
Outdoor Equipment: Protective antistatic coating for communication cabinets, shelters and precision instruments

Specification & Delivery

Resin Matrix: Fluorocarbon, PU, Epoxy, Acrylic, Polyurea, Powder coating; waterborne / solvent / solvent-free
SWCNT Form: Pre-dispersed nano slurry, custom additive package
Custom Grade: Weatherable toughened flexible grade, ESD antistatic grade, combined multi-function formula
Application Method: Air spray, airless spray, electrostatic spray, roller coating, dip coating
Service: Sample formulation tuning, panel trial, aging test, third-party test report (weathering, surface resistivity, impact)

Value Proposition

Multi-function integrated coating: One layer covers weather resistance, flexibility, antistatic and abrasion protection, cutting multi-layer painting steps and total cost
Extended service life: Greatly reduced aging, chalking and cracking in harsh outdoor environment, less rework and recoating
Higher reliability: No blooming contamination, static function stable over time, suitable for explosion-proof and precision electronic scenarios
Greater design freedom: Light & colored functional coating, break the black limitation of carbon black systems
Production-friendly: Compatible with existing coating lines without major process reconstruction