GBT 24722-2009 Micro Glass Beads For Thermoplastic Road Marking

Specifications Micro Glass Beads For Thermoplastic Road Marking

1.SiO2 62%

2.Refractive Index 1.5-1.6

3.Roundness 80% min

Micro Glass Beads For Thermoplastic Road Marking
Glass Beads for Road Marking can improve visibility of the traffic markings and road signs and supply safer night driving conditions. 
   There are two Grades: Class A & Class B and high refractive index Glass Beads available. Class A is used to making manufacture of reflective thermoplastic road marking paint. Class B is used to be dropped on the freshly stripped paint surface on the road to give immediate enhanced visibility to night drivers. 

Chemical & Physical Properties

Basic material	SiO2 62%
Shape	Spherical
Color	White
Specify gravity  g/cm3	2.4-2.6
Hardness (Moh's )	5.5-6.0
Refractive Index	1.5-1.6

Size Distribution

Type	Sieve Size (um)	Retained by %
Class A (Intermix)	1180	0-3
	850	5-20
	425	65-95
	<425	0-10
	Roundness	>70%
Class B (Drop On)	850	0-5
	600	5-20
	300	30-75
	180	10-30
	<180	0-15
	Roundness	>80%

Other sizes can be available according to your requirements.   We also follow the international standards with different specifications, such as: BS6088, AASHTO M247, EN1423/1424, AS2009, KS L2521 etc. 
  Packing way: 25kgs or 50kgs packed in 3 layers bag, or can be packed on request.