grey colour acp sheet Test environment
Before the test. the specimens grey colour acp sheet shall be placed in the standard environment specified in GB/T 2918 for24 hours. Unless otherwise specified,the test shall be carried out under this condition.
grey colour acp sheet Specimen preparation
In the preparation.the decorative surface shall be uniform in transverse and longitude. In addition,theother performances on front and back sides shall also be uniform. The specimens shall be cut out in-ward from 50 mm periphery,and size and quantity are given in Table 7.
Table 7-Size and quantity of specimens
| Items | Size/mm | Quantity | |
| Transverse | Longitude | ||
| Aluminium sheet thickness | 100 | 100 | 3 |
| Appearance | finished product | 3 | |
| Dimensional tolerance | finished product | 3 | |
| Coating thickness | 500 | 500 | 3 |
| Pencil hardness | 50 | 75 | 3 |
| Gloss difference | 500 | 500 | 3 |
| Flexibility | 25 | 200 | 3 |
| Adhesion | 50 | 75 | 3 |
| 50 | 75 | 3 | |
| Impact resistance | 50 | 75 | 3 |
| Abrasion resistance | 100 | 200 | 3 |
| Hydrochloric acid resistance | 100 | 100 | 3 |
| Oil resistance | 100 | 100 | 3 |
| Alkali resistance | 100 | 100 | 3 |
| Nitric acid resistance | 100 | 100 | 3 |
| Solvent resistance | 100 | 430 | 2 |
| Contamination rating | 100 | 200 | 3 |
| Bend strength | 100 | 100 | 3 |
| 100 | 100 | 3 | |
| Elastic modulus in bending | 50 | 200 | 6 |
| 200 | 50 | 6 | |
| Elastic modulus in bending | 50 | 200 | 6 |
| Elastic modulus in bending | 200 | 50 | 6 |
| Climbing drum peel | 50 | 50 | 3 |
| 50 | 50 | 3 | |
| Climbing drum peel | 25 | 350 | 6 |
| Climbing drum peel | 350 | 25 | 6 |
| Heat deformation temperature | 350 | 250 | 4 |
| 200 | 200 | 3 | |
| Heat deformation temperature | 25 | 120 | 6 |
| Heat deformation temperature | 120 | 25 | 6 |
| Combustion performance | 200 | 200 | 3 |
| 350 | 35 | 3 | |
| Combustion performance | 1 500 | 1 000 | 5 |
| Combustion performance | 1 500 | 500 | 5 |
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