Research Article
Thermal Expansion Behavior of Nonoriented Polypropylene/Clay Composites
Table 1
LTEC values at the three designated surfaces; S1, S2, and S3 for the PP/clay composites at various clay contents.
| | Clay wt% | Surface | LTEC ×10−4
(mm/mm/°C) | ( at 0°C), absolute values | |
| | 0 | S1 | 1 | 25 | 0.9995 | | 0 | S2 | 1 | 29 | 0.9949 | | 0 | S3 | 1 | 33 | 0.9992 | | 1 | S1 | 2 | 40 | 0.9963 | | 1 | S2 | 1 | 27 | 0.9996 | | 1 | S3 | 1 | 27 | 0.9998 | | 3 | S1 | 4 | 70 | 0.9973 | | 3 | S2 | 1 | 13 | 0.9933 | | 3 | S3 | 1 | 14 | 0.9982 | | 5 | S1 | 1 | 32 | 0.9981 | | 5 | S2 | 1 | 10 | 0.9996 | | 5 | S3 | 1 | 16 | 0.9997 | | 7 | S1 | 2 | 31 | 0.9983 | | 7 | S2 | 2 | 25 | 0.9393 | | 7 | S3 | 0.8 | 16 | 0.9968 |
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