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高熔体强度TPEE的制备及流变性能研究
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作者 叶林铭 童心 +1 位作者 郑明嘉 李晟 《广东化工》 CAS 2023年第10期1-4,共4页
通过添加扩链剂,在螺杆中进行反应挤出,制备吹塑级TPEE,并采用红外光谱分析、差示扫描分析、旋转流变分析、拉伸流变分析对材料的结构、热性能和流变性能进行了表征。在螺杆的高效剪切与混合下,扩链剂与TPEE充分反应,随着扩链剂的添加... 通过添加扩链剂,在螺杆中进行反应挤出,制备吹塑级TPEE,并采用红外光谱分析、差示扫描分析、旋转流变分析、拉伸流变分析对材料的结构、热性能和流变性能进行了表征。在螺杆的高效剪切与混合下,扩链剂与TPEE充分反应,随着扩链剂的添加量提高,样品熔融指数从5.6 g/10 min降至1.7 g/10 min。此外,样品的结晶温度先提高后下降,而熔融温度没有明显变化。旋转流变结果表明,加入扩链剂后,分子内存在明显的支化结构,且随着扩链剂加入量提高,分子量和支化程度逐渐提高。在拉伸流变测试中,当扩链剂量达到0.7时,TPEE有明显的应变硬化,是吹塑级材料的典型特征,而当添加量达到1.5时,熔体强度与Hyt-4275相当,可以替代Hyt-4275材料从而打破国外垄断。 展开更多
关键词 热塑性聚酯弹性体 熔体强度 动态流变 拉伸流变 吹塑成型
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The Dynamic Characteristics of Silicone Rubber Isolator 被引量:1
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作者 于连江 LIU Suling +2 位作者 ye linming 黄光速 XU Yuntao 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第1期130-133,共4页
The dynamic stiffness and the specific damping energy, as well as the vibration response characteristics of a silicone rubber isolator were researched. The results of the vibration test showed that the silicone rubber... The dynamic stiffness and the specific damping energy, as well as the vibration response characteristics of a silicone rubber isolator were researched. The results of the vibration test showed that the silicone rubber isolator was excellent in the performance of vibration control. The dynamic stiffness and the damping characteristics were non-linear. From the comparison between experimental results and simulation analysis, the displacement transmissibility characteristics of the isolator were obtained. As a result, the dynamic characteristics of the isolator could be accurately described by the quadratic type non-linear terms at small amolitude. 展开更多
关键词 silicone rubber ISOLATOR dynamic characteristics vibration control
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