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Coat Performance of Powder sprayed aluminum alloy
| Item |
Standard |
Quality Standard |
| Gloss |
GB/T9754-1988 |
Customer’s request
|
| Coating Thickness |
GB/T4957-1985 |
Average thickness
of five points ≥60μ |
| Adhesion |
GB/T9286-1998 |
6mm,no crack 6mm |
| Cupping Test |
GB/T9753-1988 |
Grade 0 |
| Impact-resistance |
GB/T1732-1993 |
5.5NM,no crack5.5NM |
| Impress hardness
Test |
GB/T9275-1988 |
≥80 |
| Bending |
GB/T6742-1986 |
3mm,no crack |
| Mortar Resistance
Test |
GB/T5237.4-2000 |
No visible change
and no dropping off |
| Salt Mist |
GB/T5237.4-2000 |
no erodent and no
dropping off |
| Salt fog test |
GB/T5237.4-2000 |
1000h,No bubble, wrinkle, water spot,
dropping off1000h |
| Boiling water Resistance
|
GB/T5237.4-2000 |
No bubble, wrinkle,
water spot and dropping off |
| Resistance to elements
of artificial acceleration |
GB/T5237.4-2000 |
GB/T5237.4-2000 |
| Humidity Resistance |
GB/T5237.4-2000 |
1000h,Not more than grade 11000h |
| Solvent Test |
GB/T5237.4-2000 |
No softening on
coating surface |
| Color test |
GB/T5237.4-2000 |
△Ε* ab |
Coat Performance of PVDF sprayed aluminum alloy
| Item |
Standard |
Quality standard |
| Gloss |
GB/T9754-198 |
Customer’s request，±glass unit |
| Chromatism Test |
GB/T9761-1988
GB/T11186-1989 |
△Σ* ab≤1.5 |
| Coat thickness |
GB/T4957-1985
GB/T8014-1987 |
Two coating average of 10 points
is ≥30μm;Three coating average of 10 points is ≥40μm；Four
coating average of 10 points is ≥65μm5μm |
| Hardness |
GB/T6739-1996 |
≥1H |
| Adhesion |
GB/T9286-1998 |
0级Grade
to 0 |
| Impact resistance |
GB/T1732-1993 |
2.5mmImpingement notch, no crack
or no dropping off 2.5mm |
| Wearable Test |
GB/T5237.5-2000 |
Weathering performance coefficient≥1.6L/μm |
| Hydrochloric acid Test |
GB/T5237.5-2000 |
No bubble on the coating
surface |
| Nitric acid Test |
GB/T5237.5-2000 |
△Σ* ab≤1.5 |
| Solvent Test |
GB/T5237.5-2000 |
No bubble on the coating
surface |
| Washing resistance Test |
GB/T5237.5-2000 |
No bubble, no dropping off |
| Mortar Resistance |
GB/T5237.5-2000 |
no erodent and no dropping
off |
| Salt Spray Resistance |
Salt Spray Resistance |
no erodent and no dropping
off |
| Humidity Resistance |
GB/T1740-1979 |
3000h，not more than grade 1 3000h |
| Resistance to elements |
GB/T1865-1997
GB/T1766-1995 |
500h,no pulverization, no loss of
gloss, no color change, chromatism has to reach grade1 1500h |
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