Project Background 1

PVDF membrane, that is, polyvinylidene fluoride membrane, has high mechanical strength and toughness, mold resistance, high wear resistance, high permeability to gas and liquid, good heat stability, flame retardant, low smoke. It can effectively improve the hydrophilicity, mechanical strength, anti-pollution performance of the ultrafiltration membrane, can effectively filter most of the impurities in the water, and has excellent filtering effect and stable water quality. It is widely used in the water treatment process. PVDF is mainly used in Three areas: municipal sewage treatment, advanced treatment of industrial sewage, and desalination.

Project background 2

1.PFAS definition:(per-& polyfluoroalkyl substances) series of non-natural compounds. H in some C- H bonds that may exist on the molecular carbon chain skeleton is replaced by F to form fluorinated hydrophobic chains, including PVDF, PTFE, etc.
2.PFAS hazards: potential endocrine disruptors associated with a variety of adverse outcomes, including reproductive and developmental toxicity, may affect the functional persistence of reproductive hormones, and are hardly biodegradable
3.PFAS Act: In 2021, the United States requires PFAS not to be detected for packaging materials.
Article 68 of Annex 17 of the EU REACH Regulation restricts the C9-C14 of PFCA
3M plans to stop using PFAS in its product portfolio by the end of 2025

No fluorine adhesive HJ815

The molecular structure of fluorine-free adhesive HJ815 is a propylene copolymer, which is non-toxic and degradable, avoiding the PFAS Act. Compared with PVDF water treatment membrane, fluorine-free water treatment membrane also shows certain advantages in pure water flux, strength, pollution resistance, strong acid and alkali resistance, and oxidation resistance.HJ815 can replace the use of PVDF in water treatment membrane.

Keywords: SBR CMC flexible agent cracking agent coated carbon aluminum foil adhesive graphene