... retardant. There are some formulations of XZnO.YB2O3.ZH2O, Zinc Borate is one environmental-friendly halogen-free flame retardant. There ... substitute to replace current Antimony Oxide or halogen flame retardants, Zinc borate is directly used in PVC, PE, Polyolefin, Epoxy ... flame retardant performance.3,Base on its chemical properties, Zinc borate is also used on anti-corrosion, infra red absorption, ...