Enhancement of atomic oxygen resistance for heat-sealable isomeric co-polyimide films by combining ether linkage with diphenylphosphine oxide-Reference-Cited by-同舟云学术

Enhancement of atomic oxygen resistance for heat-sealable isomeric co-polyimide films by combining ether linkage with diphenylphosphine oxide

Published:2022-05-19 Issue:1 Volume:39 Page:80-101
ISSN:8756-0879
Container-title:Journal of Plastic Film & Sheeting
language:en
Short-container-title:Journal of Plastic Film & Sheeting

Author:

Ni Hongjiang¹^ORCID,Yang Xiaoke²,Li Jun¹,Zhang Daijun¹,Liu Jingang³,Yang Shiyong⁴,Chen Xiangbao¹

Affiliation:

1. Research Center of Soft Materials, Aero Engine Corporation of China Beijing Institute of Aeronautical Materials, Beijing, China

2. Beijing Institute of Graphene Technology, Beijing, China

3. School of Materials Science and Technology, China University of Geosciences, Beijing, China

4. Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Beijing, China

Abstract

Heat-sealable isomeric co-polyimide (CPI) films with enhanced atomic oxygen (AO) resistance and mechanical strength were synthesized from 2,3,3′,4′-oxydiphthalic anhydride (aODPA), 4,4′-oxydianiline (ODA), and 2,5-bis [(4-aminophenoxy)phenyl]diphenylphosphine oxide (BADPO). We investigated how the molecular structure and diamine ratio affected the thermal properties, solubility, mechanical properties, AO resistance and heat-sealability. The diphenylphosphine oxide (DPO) side group decreased the CPI film mechanical strength and its higher ODA reactivity increased the molecular weight. At 10 mol% ODA in the aODPA-BADPO system, the CPI film exhibited increased tensile strength with no detriment to the AO resistance. Meanwhile, the CPI films demonstrated good heat-sealability indicated by a completely merged interface after heat sealing.

Funder

Young Elite Scientists Sponsorship by CAST

National Natural Science Foundation of China

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Surfaces, Coatings and Films

Link

http://journals.sagepub.com/doi/pdf/10.1177/87560879221102635

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