Resistance of Grilamid TR products to stress cracking
Grilamid TR shows an excellent stress cracking resistance in comparison to other transparent plastics Test method: The following table shows the bending stress value [MPa], at which stress cracking visually first appears. The test specimens are immersed for 1 minute in the test medium at 23°C. Testing is carried out according to the bent strip test (ISO 4599).
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Table: Resistance of Grilamid TR products to stress cracking (values in MPa)
|
Grilamid TR 55 |
Grilamid TR 90 | ||
| Acetone |
20 |
>40 | |
| Butyl acetate |
10 |
15 | |
| Cyclohexanone |
20 |
15 | |
| "descaling agent" (Amido sulphuric acid) |
>40 |
>40 | |
| Diesel fuel |
>40 |
>40 | |
| Diethyl ether |
20 |
40 | |
| Dioctylphthalate |
>40 |
>40 | |
| Ethanol |
0 |
>40 T | |
| Ethyl acetate |
20 |
30 | |
| Ethyl methyl ketone |
20 |
>40 | |
| Isopropanol |
10 |
15 T | |
| Isopropanol 80% |
20 |
>40 | |
| Methoxypropyl acetate |
20 |
15 | |
| Methyl isobutyl ketone |
20 |
15 | |
| Mineral oil (ASTM no. 3) |
>40 |
>40 | |
| n-Hexane |
40 |
40 | |
| Nitro diluent |
20 |
20 | |
| Peppermint oil |
30 |
30 | |
| Petrol (ASTM Fuel C) |
30 |
40 | |
| Petrol (FAM B) |
30 |
>40 T | |
| Petroleum ether 40-60°C |
40 |
30 | |
| "Taski Cleaning Fluid R20-Strip F41 10%" |
>40 |
>40 | |
| Toluoene |
30 |
40 | |
| Xylol |
30 |
>40 | |
| T = craze formation | |||
