上海交通大学学报（医学版）

上海交通大学学报（医学版）

• 论著（基础研究） • 上一篇    下一篇

聚氨酯复合材料机械性能的实验研究

范锐 1，李晶 2*，郑元俐 3   

  1. 1.上海市普陀区中心医院口腔科，上海 200062；2.上海交通大学医学院附属第九人民医院口腔修复科，上海 200011；3.上海交通大学医学院附属第九人民医院口腔干保特需科，上海 200011
  • 出版日期:2016-12-28 发布日期:2016-12-29
  • 通讯作者: 郑元俐，电子信箱：zhengyuanli@yahoo.com。
  • 作者简介:范锐（1976—），男，主治医师，学士；电子信箱：fanrui1015@163.com。李晶（1991—），女，硕士生；电子信箱： lijing1991xixi@163.com。*并列第一作者。
  • 基金资助:

    上海市科学技术委员会项目（0941195470）

Experimental study on the mechanical properties of polyurethane composite

FAN Rui1, LI Jing2*, ZHENG Yuan-li3   

  1. 1. Department of Stomatology, Shanghai Putuo Central Hospital, Shanghai 200062 ,China; 2.Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011,China;3. Stomatology Special Consultation Clinic, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China

  • Online:2016-12-28 Published:2016-12-29
  • Supported by:

    Project of Science and Technology Commission of Shanghai Municipality, 0941195470

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摘要：

目的 ·探讨含聚膦腈纳米球的聚氨酯复合材料的机械性能。方法 ·制备不同材料试件，包括纯聚氨酯（PU组）、添加1%聚膦腈纳米球的聚氨酯（1%PSZ 组）和添加5%聚膦腈纳米球的聚氨酯(5%PSZ组)，以自固化型硅橡胶软衬材料Sofreliner作为对照（Sofreliner组）。利用扫描电子显微镜观察各组试件的微观形貌，计算试件在0、1 000、3 000次冷热循环后的拉伸强度及撕裂强度。结果 ·扫描电子显微镜观察发现：1%PSZ组和5%PSZ组试件表面未见纳米颗粒团聚体；与1%PSZ组和PU组比较，5%PSZ组试件表面的凹陷较浅。未进行冷热循环时，PU组、1%PSZ组和5%PSZ组的拉伸强度及撕裂强度的差异无统计学意义，但均显著大于Sofreliner组（P<0.05）。经过冷热循环后，PU组、1%PSZ组和5%PSZ组的拉伸强度略有下降，撕裂强度无明显改变。结论 ·聚氨酯复合材料的拉伸强度和撕裂强度均高于硅橡胶类软衬材料Sofreliner，达到临床使用标准；与1%聚膦腈纳米球添加比例比较，5%聚膦腈纳米球添加比例一定程度上改善了材料的表面性能，但对材料的拉伸强度和撕裂强度无明显增强作用。

关键词: 聚膦腈, 聚氨酯, 机械性能, 软衬材料

Abstract:

Objective · To investigate the mechanical properties of polyurethane composite containing polyphosphazene nanospheres. Methods · Test specimens were prepared with different materials, including polyurethane (the PU group), polyurethane containing 1% polyphosphazene nanospheres (the 1% PSZ group), polyurethane containing 5% polyphosphazene nanospheres (the 5% PSZ group), and self-curing silicone rubber soft liner material Sofreliner (the Sofreliner group). The microstructure of test specimens was observed using the scanning electron microscope (SEM). The tensile strength and tearing strength of test specimens were calculated after 0, 1 000, and 3 000 hot and cold cycles. Results · SEM observation showed that there were no nanoparticles aggregating on the surface of test specimens in the 1% PSZ and 5% PSZ groups. Depressions on the surface of test specimens were shallower in the 5% PSZ group than those in the 1% PSZ and PU groups. Before hot and cold cycling tests, the differences in tensile strength and tearing strength among the PU, 1% PSZ and 5% PSZ groups were not statistically significant, but tensile strength and tearing strength were significantly higher in the PU, 1% PSZ and 5% PSZ groups than those in the Sofreliner group (P<0.05). After hot and cold cycling tests, the tensile strength in the PU, 1% PSZ and 5% PSZ groups was slightly decreased, while the tearing strength was not significantly changed. Conclusion · The tensile strength and tearing strength of polyurethane composite are higher than those of Sofreliner and meet the clinical application standard. The surface properties of materials were improved by adding 5% polyphosphazene nanospheres to polyurethane compared with adding 1% polyphosphazene nanospheres, but the tensile strength and tearing strength were not significantly improved.

Key words: polyphosphazenes, polyurethane, mechanical properties, soft liner material