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lzq1985(½ð±Ò+5, ·ÒëEPI+1): xiexie 2011-06-10 10:38:11
| As molecular weight of soft segment increase, molecular chain becomes more flexible, which helps ordered arrangement, thus increasing interactions of inter-chains and leading to phase separation. As a result, heat resistance is improved. |

2Â¥2011-06-09 23:33:21














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