| Items | Coating pencil hardness | Coating luster deviation | Coating flexility, T | Coating adhesion. Grade | Coating wear resistance, L/μm | Coating hydrochloric acid resistance | Coating oil resistance | Coating alkali tolerance | Coating nitric acid resistance | Coating solvent resistance | Coating contamination resistance, % | |
| P e r f o r m a n c e |
curtain wall plate | ≥HB | ≤10 | ≤2 | 0 | ≥5 | Without change | Without change | Without bubble, convexity and pulverization, color difference△E≤2 | Without bubble, convexity and pulverization, color difference△E≤5 | Do not expose base | ≤5 |
| Common decoration board | -- | luorocarbon coating: the same as curtain wall plate ; Other coatings: Without change | fluorocarbon coating: the same as curtain wall plate ; Other coatings: not required. | |||||||||
| Test standard | GB/T6739 (IDT ISO 15184： 1998) |
GB/T975 4(EQV ISO 2813： 1978 ) |
GB/T9286 (EQV ISO 2409：1992） |
Apply test sand which meets Gb178 | GB/T11942
(fluorocarbon coating poor
coloring measure) Gb8076 (Other coatings chemical reagent) |
GB/T11942 (poor coloring measure) |
GB/T9780 | |||||
| Hydrochloric acid 20# machine oil Wipe for 200 times concentration (volume integral): with butyl ketone fluorocarbon coating 5%, 200 Other coatings 2% |
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| Salt fog resistance, Grade | Weathering resistance | Anti-impact | Hot water resistance |
Peeling strength Nmm/mm |
Weather resistance | ||||||
| Color difference △E |
Dulling, Grade | Other chemical properties, Grade |
Appea- rance |
Average | Minimum | Peeling strength average descen- ding rate, % |
Coating adhesion, Grade |
Appea- rance |
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| 4000h, without peeling, coating corrosion, grade >1 |
4000h, ≤4.0 |
4000,h≤2 | 4000h, 0 | Without peeling | Without damage or eternal distortion |
without abnormity |
≥100 | ≥80 | ≤10 | 0 | Without change |
| fluorocarbon coating the same as curtain wall plate ; Other coatings: 720h, without peeling, coating corrosion, grade >1 |
fluorocarbon coating: the same as curtain wall plate ; Other coatings: 600h, >2 |
luorocarbon coating: the same as curtain wall plate ; Other coatings: 600h, >2 |
fluorocarbon coating: the same as curtain wall plate ; Other coatings: 600h, 0 |
Without damage |
≥50 | ≥30 | |||||
| GB/T1771(EQV ISO7253：1984）； GB/T1740 GB/T11942； GB/T9754(EQV ISO2813:1978); GB/T1766(NEQ ISO4628-1：1980) |
GB/T16259 GB/T11942 GB/T9754(EQV ISO2813：1978） GB/T1766(NEQ ISO4628-1：1980） |
GB/T9286 (EQV ISO 24 09：1992) GB/T1720 |
GB/T1457(MOD ASTM D 1781-98) |
GB/T1457(MOD ASTM D1781-98） |
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| Weight of impact object 98℃Distilled water, Repeat for 50 times 50kgFall: 700mm constant temperature 2h under -40℃ and 80℃ |
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| Plane tensile adhesion strength, Mpa |
Plane compre- ssion strength Mpa |
Plane shearing elastic modulus Mpa |
Bending rigidity N mm2 |
Shearing rigidity , N |
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| Average | Minimum | ||||||
| ≥1.0 | ≥0.6 | ≥1.0 | ≥30 | ≥0.6 | ≥4.0 | ≥1.0×108 | ≥2.0×104 |
| ≥0.6 | ≥0.4 | ≥0.8 | ≥25 | ≥0.4 | ≥3.0 | ≥1.0×107 | ≥1.0×104 |
| GB/T1452(MOD ASTM C 297- 94(1999) ) |
GB/T1453(MOD ASTM C 365-00) |
GB/T1455(MOD ASTM C 393-00) |
GB/T1456(MOD ASTM C 273-00) |
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| Allowed size deviation | for aluminum panel thickness and coating thickness | |||||
| Items | Allowed deviation | Items | Thickness (Unit: aluminum panel, mm; coating, μm) | |||
| Curtain wall plate | Common decoration plate | |||||
| length, mm | ≤2000 | ±3 | aluminum panel | ≥1.0 ,≥0.7 | 0.5--1.0 | |
| ＞2000 | ±5 | |||||
| width, mm | ±2 | |||||
| thickness, mm | ±0.25 | |||||
| diagonal difference, mm | ≤5 | Coating | First | —— | ≥16 | |
| edge straightness, mm | ≤2 | Second | ≥25 | |||
| warp, mm/m | ≤2 | Third | ≥32 | |||
| Note: Allowed size deviation is confirmed by the supplier and buyer | ||||||