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.
Zinc Borate is one multi-functional synergistic flame retardant with Antimony Oxide etc additives in polymers to improve flame retardant performance, it can reduce smoke evolution and adjust the balance of flame retardant properties versus mechanical, electrical and other properties. Zinc Borate is widely used in PVC applications such as carpet, conveyor belt, wire and cable, and in Nylon, PE, PP etc engineering plastics of halogen free flame retardant systems based on Al(OH)3 and Mg(OH)3, intumescent coating and painting, ceramic glaze, milk glass, decorative paper etc fields. Zinc Borate is also used in wood composite as fungicide to prevent from decay fungi and subterranean termites. ZB200 grade's particle size is the smallest, it is recommended to wire and cable applications that need much fine particle size fields.
Internal plastic with knitted exterior covered with film, with the net weight of 25kg or 40kg
|Chemical formula:||2 Zno. 3 B2O3.3.5H2O|
|Appearance:||White amorphous powder|
|Bulk density(g/cm3):||0.3-0.5 gm / cc|
|pH of filtrate of 20% aqueous:||7.0 -8.0|
|Sieve residue (200 mesh 75 micron):||0.2% max|
|Ignition loss (950° C):||15.5% max|
|Zno Content:||37.0% min|
|B2O3 Content:||47.0% min|