Page 26 - Handbook of Surface Improvement and Modification

2.2 Additives used 21

2.2.8 POLYTETRAFLUOROETHYLENE

GENERAL INFORMATION
Name: PTFE CAS #: 9002-84-0 EC #: 204+126-9
Product composition: PTFE in modified polyethylene wax, wax (wax 90-98%)
PHYSICAL PROPERTIES
State: solid, micropowder Odor: none Color: white, off-white
o
o
Melting point, C: 102-115 (wax), 327 T , C: 115
g
3
3
Coefficient of friction: 0.05-0.1 Bulk density, kg/m : 350-600 Density, kg/m : 960-2280
Particle size, μm: 6-90
HEALTH & SAFETY
o
o
Autoignition, C: 530-550 Flash point, C: 180-285
Rabbit dermal LD50, mg/kg: no skin irritation Carcinogenic: no
3
OSHA, PEL, mg/m : 2 (wax) Rat oral LD50, mg/kg: >2000 to 11280
USE & PERFORMANCE
Outstanding properties: Provides highly reproducible fine-textured, satin-gloss, scratch-resistant
surfaces in all common powder coating systems. The obtained textures are uniform, even if the
layer thickness is variable. Improves the scratch resistance, abrasion resistance and the surface slip
of powder coatings.
Recommended for polymers: acrylics, alkyds, PU, epoxies, polyesters, hybrid systems, polyester/
epoxide, acrylate, PU, epoxides
Recommended for products: industrial and architectural coatings, wood coatings
Concentrations used, wt%: 0.1-2 (total formulation)
Food approval FDA: 175.300 resinous and polymeric coatings