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Citation: ZHU Danyang, WANG Ying, ZHANG Chunhua, WU Zuolin, HAN Baochun, YANG Zhenghua. Processability Improvement of Polyimide by Adding Asymmetric Structure in Molecular Chain[J]. Chinese Journal of Applied Chemistry, ;2013, 30(2): 239-241. doi: DOI:10.3724/SP.J.1095.2013.20151 shu

Processability Improvement of Polyimide by Adding Asymmetric Structure in Molecular Chain

1.
a Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2.
b Avic Shaanxi Baocheng Aviation Instrument Corporation Limited, Baoji 721006, China

Corresponding author: YANG Zhenghua,
Received Date: 13 April 2012
Available Online: 4 July 2012
Fund Project: 吉林省科技发展计划项目(20106022) (20106022)

A series of high-strength and processable polyimide(PI) moulding compounds with different content of diamine was prepared from 3,3',4,4'-biphenyl tetracarboxylic diandhydride(BPDA) and 4,4'-diaminodiphenyl ether(4,4'-ODA),3,4'-diaminodiphenyl ether(3,4'-ODA) through chemical imiidization.The rheological,mechanical and thermal resistance properties of the PI moulding compounds were investigated.With the increasing of 3,4'-ODA content,the impact strength of the PI could be maintained without dramatic change.The rheological properties of the PI were enhanced and the glass transition temperature can reach 275℃.The impact strength of the PI is about 141 kJ/m².Processability of the PI is superior at 20 MPa.
- biphenyl tetracarboxylic diandhydride,
- diaminodiphenyl ether,
- polyimide,
- moulding compound,
- rheological property
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