reflective glass beads for road marking material

1.chemical composition

SIO2 : 67%-72%  , AI2O3 2%- 2.5% , CAO 6%-8% ,MGO 3%-4%, NA2O 13%-15% , BAO ,TIO2 ,R2O FE2O3

2.Standard

APPEARANCE CLEAN, APPARENT, NO OBVIOUS IMPURITY

REFLECTION INDEX  1.5-1.61

GRAVITY 2.4-2.6 G/CM3

COMPOSITION   SODIUM LIME GLASS

SIO2 CONTENT >62%

ROUNDNESS >75%

  duct use:

improve the retro-reflection property of the road marking paint, when driving at night, the headnights flash on the marking line with glass beads which makes the headlights reflex back in parellel, so the driver could see the forward way clearly and the driving security is raised at night.

nical parameter:   density:2.4-2.6g/cm3

content of sio2: 68%min

3.Reflective index: Nd 1.50min