STUDIES ON THERMAL PROPERTIES OF POLYURETHANE-IMIDE BLOCK COPOLYMERS WITH DIFFERENT SOFT SEGMENTS

LIU Jin; MA Dezhu; CHEN Xiaoming

doi:null

您当前的位置：

首页 >

文章列表页 >

STUDIES ON THERMAL PROPERTIES OF POLYURETHANE-IMIDE BLOCK COPOLYMERS WITH DIFFERENT SOFT SEGMENTS

Research Article | 更新时间：2021-03-19

- STUDIES ON THERMAL PROPERTIES OF POLYURETHANE-IMIDE BLOCK COPOLYMERS WITH DIFFERENT SOFT SEGMENTS
- Acta Polymerica Sinica Issue 2, Pages: 221-226(2002)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 April 2002，
扫描看全文
LIU Jin, MA Dezhu, CHEN Xiaoming. STUDIES ON THERMAL PROPERTIES OF POLYURETHANE-IMIDE BLOCK COPOLYMERS WITH DIFFERENT SOFT SEGMENTS. [J]. Acta Polymerica Sinica (2):221-226(2002)
DOI：

LIU Jin, MA Dezhu, CHEN Xiaoming. STUDIES ON THERMAL PROPERTIES OF POLYURETHANE-IMIDE BLOCK COPOLYMERS WITH DIFFERENT SOFT SEGMENTS. [J]. Acta Polymerica Sinica (2):221-226(2002) DOI：

摘要

用二步法合成了不同软段(PPO

PEG

PEPA)聚氨酯-酰亚胺 (PUI)嵌段共聚物

FTIR光谱表征了所有合成PUI分子主链均含有酰亚胺链段

并研究了PUI嵌段共聚物的热性能受软段类型及长度的影响.DSC研究表明聚酯型PUI的软硬段之间的相容性比聚醚型PUI好

随相同软段分子量的增加

PUI体系的软硬段兼容性变差

并显示了相分离的特征 ;热失重 (TGA)研究得出不同软段的PUI样品的热稳定性大小顺序为 :PEPA-PUI >PEG-PUI>PPO-PUI;动态力学 (DMTA)研究给出了所合成的PUI样品在50～200℃范围内均出现了较长的模量平台显示出有较好的耐热性

且随硬段含量的升高其储能模量不断增强.

Abstract

PUI block copolymers with three diferent soft segments were synthesized and characterized．FTIR spectroscopy studies confirmed the characteristic absorption of polyurethane-imide main chain structure of all PUI samples．DSC analysis revealed that the values of the glass transition temperature of hard segments rich phase (Tgh) were increased with all increase of soft segments length for the same kind soft segment．DSC results additionally support that with an increase of soft segment length

the soft and hard segments phase compatibility was decreased and the soft-hard block phase was more separable．TGA revealed that the thermal stability of different soft segment PUI was in the order of PEPA-PUI＞PEG-PUI＞PPO-PUI

and dynamic mechanical thermal analysis (DMTA) of PUI samples also showed that the storage energy modulus platform dropping is not remarkable from 50～200℃

this result proved that thermo-plastic PUI elastomer samples may have good thermal mechanical properties

which was found to be improved by increasing the hard segments content of PUI systems．

关键词

聚氨酯酰亚胺合成软硬段结构热性能

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

SYNTHESIS AND CHARACTERIZATION OF PHOSPHORUS-CONTAINING LIQUID CRYSTALLINE COPOLYESTERS BASED ON BIPHENYL-4,4'-DICARBOXYLIC ACID

SYNTHESIS AND MAGNETIC PROPERTIES OF POLY(SCHIFF BASE) COMPLEXES CONTAINING 1,10-PHENANTHROLINE AND PYRIDINE UNIT

PROPERTIES OF CURED EPOXY RESIN CONTAINING PHOSPHORUS AND SILICACONTAINING HYBRIDS

SYNTHESIS AND GAS PERMEATION CHARACTERIZATION OF POLY［(HEXAFLUOROISOPROPYLOXY)2-x (TRIFLUOROETHOXY) x］ PHOSPHAZENE

SYNTHESIS AND CHARACTERIZATION OF A SERIES OF POLYBENZOBISOXAZOLES

Related Author

No data

Related Institution

Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials Sichuan, Sichuan University

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰