Isocyanate oligomer and polyether extended to modify POM/TPU blends

LIU Chunlin; ZHOU Rudong; WU Dun; CHEN Linghong

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Isocyanate oligomer and polyether extended to modify POM/TPU blends

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- Isocyanate oligomer and polyether extended to modify POM/TPU blends
- CIESC Journal Issue 9, Pages: 2377-2383(2008)
- 作者机构：
  
  1. 江苏工业学院材料科学与工程学院
  2. 常州市高分子新材料重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 September 2008，
  
  Published：05 September 2008
- 稿件说明：
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LIU Chunlin, ZHOU Rudong, WU Dun, et al. Isocyanate oligomer and polyether extended to modify POM/TPU blends[J]. CIESC Journal, 2008, (9): 2377-2383.
DOI：

LIU Chunlin, ZHOU Rudong, WU Dun, et al. Isocyanate oligomer and polyether extended to modify POM/TPU blends[J]. CIESC Journal, 2008, (9): 2377-2383. DOI：

摘要

利用双螺杆挤出机制备了聚甲醛(POM)/热塑性聚氨酯弹性体(TPU)、POM/TPU/含异氰酸酯基的低聚物(Z)以及POM/TPU/Z/聚醚3种共混物。采用力学性能测试、差示扫描量热分析(DSC)、偏光显微镜(PLM)、傅里叶转换红外线光谱 (FTIR)、扫描电子显微镜(SEM)、动态力学性能分析(DMA)等，研究了3种共混物的力学性能、结晶行为及形态结构。结果表明：共混物的缺口冲击强度和断裂伸长率随TPU含量的增加而提高;异氰酸酯基低聚物（Z）和聚醚在促进分散相分散、增强两相间的相容性方面发挥重要作用，降低了聚甲醛的结晶度，能够有效地提高共混物的缺口冲击强度和断裂伸长率。

Abstract

The blends of polyoxymethylene (POM)/thermoplastic polyurethane elastomer (TPU)

POM/TPU/isocyanate oligomer (Z) and POM/TPU/Z/polyether were prepared by using twin-screw extruder.Mechanical properties

crystallization behavior and morphology were studied through mechanical properties testing

differential scanning calorimetry(DSC)

polarizing microscopy (PLM)

Fourier transform infrared spectrometer (FTIR)，scanning electron microscopy (SEM) and dynamic mechanic analysis (DMA).The results showed that with increasing content of TPU

elongation at break and notched impact strength of the blends increased.Z and polyether played an important role in promoting the dispersion of TPU in POM and enhancing compatibility of two phases.The crystallinity of POM in the blends decreased.Elongation at break and notched impact strength of the blends were improved.

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