用于粉末涂料纹理的不含 PFAS 的生物基添加剂.pdf

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1、Biobased PFAS-free Additivesfor Powder Coating TexturingPresented by:Rich Czarnecki,Vice President1Update on PTFE(PFAS)based productsUpdate on PTFE(PFAS)based productsIn February 2023,ECHA published a comprehensivedossier to ban around 10,000 per-and polyfluoroalkylsubstances(PFAS)In parallel,EPA pu

2、blished a proposed rule for PFASsubstances under TSCABoth small molecule fluorochemicals(many of which areknown to be serious human health hazards)and highmolecular weight fluoropolymers(many of which have along history of safe use)would be considered a PFASunder both EU and EPA definitionsPTFE is a

3、 fluoropolymerTherefore,PTFE is a PFAS substance2Update on PTFE(PFAS)based productsUpdate on PTFE(PFAS)based productsCustomers in the food packaging industries have beenvery active at testing and replacing ingredients thatcontain PFAS/PTFEMany other customers are also concerned about thepotential re

4、gulatory burden from ECHA and EPAMicro Powders has built and commercialized a successfulportfolio of nanocomposite waxes that almost alwayssurpass the performance of PTFE based additive powdersWe expect this trend moving away from PTFE willcontinue3Powder coating texture additivesPowder coating text

5、ure additivesMicro Powders has been very successful with additivepowders that provide texture effects in powder coatingsAll of these products are based on PTFETypically dosed at 1%or lessProvides a fine sandpaper-like texture with low glossMany customers want a PTFE-free alternative thatprovides the

6、 same appearance and haptics45Mechanism of PTFE texturingMechanism of PTFE texturingTexturing with PTFE in powder coatings appears to beprimarily due to a rheological“incompatibility”thattakes place as the powder is melted and curedObviously,PTFE does not melt during powder cureThe following video p