Preparation and characterization of thermoplastic materials for invisible orthodontics
Preparation and characterization of thermoplastic materials for invisible orthodontics
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隐形正畸热塑性材料的制备及表征
DOI：
10.4012/dmj.2011-120
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发表时间：
2011-11-01
影响因子：
2.5
通讯作者：
Zhang, Yu
中科院分区：
文献类型：
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作者：
Zhang, Ning;Bai, Yuxing;Zhang, Yu
采用机械共混法制备了PETG/PC/TPU共混聚合物。采用万能试验机对改性PETG/PC/TPU共混物的力学性能进行了表征，并与两种商业热塑性产品Erkodur和Biolon的结果进行了比较。共混改性提高了PETG/PC/TPU的性能。当共混比（wt%）为70/10/20时，PETG/PC/TPU的力学性能最佳，超过了Erkodur和Biolon。撕裂强度为50.23 MPa，断裂伸长率为155.99%。1小时后的应力松弛速率为0.0136 N/s，显著低于Erkodur和Biolon（p
PETG/PC/TPU polymer blend was prepared by mechanical blending. The mechanical properties of modified PETG/PC/TPU blend were characterized using a universal testing machine, and results were compared against two commercial thermoplastic products -Erkodur and Biolon. Blending modification improved the properties of PETG/PC/TPU. When blending ratio (wt%) was 70/10/20, PETG/PC/TPU exhibited optimal mechanical properties which exceeded those of Erkodur and Biolon. Tear strength was 50.23 MPa and elongation at break was 155.99%. Stress relaxation rate was 0.0136 N/s after 1 hour, which was significantly slower than Erkodur and Biolon (p