Molecular formula: 2ZnO·3B2O3·3.5H2O
Molecular weight: 434.5
Surface water ≤ (%)
Loss on ignition (%)
Specific gravity (g/cm3)
Temp. of dehydration >
Residual of 320 Mesh ≤ (%)
Zinc Borate is one environmental-friendly halogen-free flame
retardant. There are some formulations of XZnO.YB2O3.ZH2O, in which
Zinc Borate with 3.5 hydrate is called ZB2335 (2ZnO.3B2O33.5H2O)is
the most common used grade. It has owned some excellent properties
on non-toxicity, slight solubility in water, good thermal
stability, fine particle size, low specific gravity, great
free-flowing etc. As one high efficient flame retardant, it is
widely used in plastic, rubber, coating etc fields.
1. Zinc borate can be used as multi-functional synergistic
additives with antimony oxide or other halogenated flame retardants
to significantly improve the flame retardant performance,
remove smoke emission and adjust the balance on chemical,
mechanical, electrical etc properties.
2. As environmental protection substitute to replace current
Antimony Oxide or halogen flame retardants, Zinc borate is directly
used in PVC, PE,
Polyolefin, Epoxy Polyamide etc resins and rubber process.
Moreover, it is widely used in textile,
fiber, floor, leather, wall paper, carpet, paint etc decorative
materials to improve flame retardant performance.
3. Base on its chemical properties, Zinc borate is also used on
anti-corrosion, infra red absorption, fungicide for wood
preservation etc fields.
PACKAGE, TRANSPORTATION AND STORAGE:
Package: internal plastic with knitted exterior covered with film,
with the net weight of 25kg or 40kg.