Project Background 1

With the continuous emergence of high-rise buildings, the safety, stain resistance and durability of buildings are becoming more and more important, and the use of exterior wall tiles and porcelain veneers is gradually restricted. Because PVDF resin has strong weather resistance, it can be used outdoors for a long time without maintenance, which makes the production of PVDF coatings increase steadily. This kind of coating is widely used in high-rise buildings, power stations, airports and highways.

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,HJ815 also has excellent chemical resistance, high temperature resistance and oxidation resistance, which can make the coating have better protective performance and longer service life.
Therefore, HJ815 can completely replace the use of PVDF in coatings.

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