Items
|
Index
|
Pencil hardness (scratch)
|
≥2H
|
tensile bond strength MPa
|
standard condition
|
≥2.0
|
after soaking
|
≥2.0
|
wearability(750g/500r)/g,
|
≤0.03
|
artificial weathering ageing resistance d(400h)
|
No bubble, no peeling, no crack; Powder ≤1 grade, △E≤6.0
|
impact resistance (1)
|
steel ball,500g, 100cm.No crack, no peeling
|
shock absorption
|
≥4%
|
compression strength≥
|
50 MPa
|
skid resistance(dry friction coefficient)
|
≥0.50
|
skid resistance(wet friction coefficient)
|
≥0.70
|
water resistance (168h)
|
No bubble, no peeling, no discoloration
|
chemical resistance
|
oil resistance (120# gasoline, 72h)
|
No bubble, no peeling, no discoloration
|
resistance to alkali(20%NaOH,72h)
|
No bubble, no peeling, no discoloration
|
acid fastness(10%H2SO4,48h)
|
No bubble, no peeling, no discoloration
|
fire resistance(GB8624-2012)
|
B1-class (retardant materials)
|
Cigarette ignition resistance(GB/T15102-2006)
|
No spots, crack, blister and other changes
|
Shock absporption,dB(GB/T11982.2-1996)
|
≥10
|