不同类型热塑性聚氨酯对聚醚嵌段聚酰胺/热塑性聚氨酯共混弹性体的性能影响研究

张昊; 张君; 朱海燕; 徐国良; 白绘宇

doi:10.11777/j.issn1000-3304.2025.25151

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不同类型热塑性聚氨酯对聚醚嵌段聚酰胺/热塑性聚氨酯共混弹性体的性能影响研究

研究论文 | 更新时间：2025-09-30

- 不同类型热塑性聚氨酯对聚醚嵌段聚酰胺/热塑性聚氨酯共混弹性体的性能影响研究
- Research on the Effect of Different Types of Thermoplastic Polyurethane on the Properties of Polyether Block Amide/Thermoplastic Polyurethane Blended Elastomers
- 高分子学报 2025年页码：1-16
- 作者机构：
  
  1.江南大学化学与材料工程学院合成与生物胶体教育部重点实验室无锡 214122
  2.江阴市斯强传动科技有限公司无锡 214404
- 作者简介：
  
  E-mail: hybai@jiangnan.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25151
  中图分类号：
- CSTR：32057.14.GFZXB.2025.7454
- 收稿日期：2025-06-22，
  
  录用日期：2025-07-29，
  
  网络出版日期：2025-09-30，
- 稿件说明：
移动端阅览
张昊, 张君, 朱海燕, 徐国良, 白绘宇. 不同类型热塑性聚氨酯对聚醚嵌段聚酰胺/热塑性聚氨酯共混弹性体的性能影响研究. 高分子学报, doi: 10.11777/j.issn1000-3304.2025.25151

Zhang, H.; Zhang, J.; Zhu, H. Y.; Xu, G. L.; Bai, H. Y. Research on the effect of different types of thermoplastic polyurethane on the properties of polyether block amide/thermoplastic polyurethane blended elastomers. Acta Polymerica Sinica, doi: 10.11777/j.issn1000-3304.2025.25151
张昊, 张君, 朱海燕, 徐国良, 白绘宇. 不同类型热塑性聚氨酯对聚醚嵌段聚酰胺/热塑性聚氨酯共混弹性体的性能影响研究. 高分子学报, doi: 10.11777/j.issn1000-3304.2025.25151 DOI： CSTR： 32057.14.GFZXB.2025.7454.

Zhang, H.; Zhang, J.; Zhu, H. Y.; Xu, G. L.; Bai, H. Y. Research on the effect of different types of thermoplastic polyurethane on the properties of polyether block amide/thermoplastic polyurethane blended elastomers. Acta Polymerica Sinica, doi: 10.11777/j.issn1000-3304.2025.25151 DOI： CSTR： 32057.14.GFZXB.2025.7454.

摘要

聚醚嵌段聚酰胺弹性体(PEBA)采用熔融加工法分别与聚醚型热塑性聚氨酯弹性体(TTPU)和聚酯型热塑性聚氨酯弹性体(STPU)进行共混，制得PEBA/TTPU (PTT)和PEBA/STPU (PST) 2种共混物，并添加乙烯-1-辛烯共聚物接枝马来酸酐(POE-

-MAH)提高热塑性聚氨酯弹性体(TPU)和PEBA两者的相容性，对2种共混物增容前后的力学性能、结晶性能、流变性能等的变化与增容机理进行了分析，探究不同类型TPU对TPU/PEBA共混物性能的影响. 研究结果表明，PEBA/TPU为20/80 (

)时，2种共混物力学性能最佳；添加5份POE-

-MAH后，PTT和PST的拉伸强度分别提升37.5%和22.5%，断裂伸长率分别提升15.3%和13.3%. 扫描电镜(SEM)表明，相容剂减小PEBA分散相尺寸、改善界面相容性，但TTPU与STPU因软段极性差异呈现不同分散行为：TTPU与PEBA通过极性匹配形成强氢键，STPU的酯基仅与POE-

-MAH的马来酸酐基团形成氢键，导致PST的物理微交联程度及熔体弹性均低于PTT. 傅里叶变换红外光谱(FTIR)、示差扫描量热仪(DSC)及流变测试进一步证实，PTT因强界面作用具有更高复数黏度和储能模量，STPU基共混物因相分离程度高在低频区黏度较低，过量相容剂会加剧相分离. 本研究明确了TPU软段极性对共混物界面作用、结晶行为及流变性能的影响规律，为PEBA基弹性体的低成本化改性及在鞋材、医疗设备等领域的应用提供了理论依据.

Abstract

Polyether block polyamide elastomer (PEBA) was blended with polyether thermoplastic polyurethane elastomer (TTPU) and polyester thermoplastic polyurethane elastomer (STPU)

respectively

by melt processing method to prepare two blends

namely PEBA/TTPU (PTT) and PEBA/STPU (PST). Ethylene-1-octene copolymer grafted maleic anhydride (POE-

-MAH) was added to improve the compatibility between thermoplastic polyurethane elastomer (TPU) and PEBA. The changes in mechanical properties

crystallization properties

rheological properties

etc

of the two blends before and after compatibilization

as well as the compatibilization mechanism

were analyzed

and the influence of different types of TPU on the properties of TPU/PEBA blends was explored. The results showed that when the ratio of PEBA/TPU was 20/80

the mechanical properties of both blends were the best. After adding 5 parts of POE-

-MAH

the tensile strength of PTT and PST increased by 37.5% and 22.5%

respectively

and the elongation at break increased by 15.3% and 13.3%

respectively. Scanning electron microscopy (SEM) showed that the compatibilizer reduced the size of the PEBA dispersed phase and improves the interfacial compatibility. However

TTPU and STPU showed different dispersion behaviors due to the difference in the polarity of the soft segments: TTPU and PEBA formed strong hydrogen bonds through polarity matching

while the ester groups of STPU only formed hydrogen bonds with the maleic anhydride groups of POE-

-MAH

resulting in the physical micro-crosslinking degree and melt elasticity of PST being lower than those of PTT. Fourier tran

sform infrared spectroscopy (FTIR)

differential scanning calorimetry (DSC) and rheological tests further confirmed that PTT had higher complex viscosity and storage modulus due to strong interfacial interaction. The STPU-based blend had lower viscosity in the low-frequency region due to the high degree of phase separation

and excessive compatibilizer would aggravate phase separation. This study clarifies the influence law of TPU soft segment polarity on the interfacial interaction

crystallization behavior and rheological properties of the blends

and provides a theoretical basis for the low-cost modification of PEBA-based elastomers and their applications in fields such as shoe materials and medical equipment.

关键词

Keywords

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