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Synthesis and characterization of novel high temperature structural adhesives based on nadic end capped MDA-BTDA-ODA copolyimide

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info:eu-repo/semantics/openAccess

Date

2018-10

Author

Acar, Oktay
Varış, Serhat
Işık, Tuğba
Tirkeş, Seha
Demir, Mustafa M.

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Acar, O., Varış, S., Işık, T., Tirkeş, S., and Demir, M. M. (2018). Synthesis and characterization of novel high temperature structural adhesives based on nadic end capped MDA-BTDA-ODA copolyimide. Materials Research Express, 5(10). doi:10.1088/2053-1591/aadb2e

Abstract

A series of novel copolyimide structural adhesives were synthesized using 4,4′-diaminodiphenylmethane (MDA), 3,4′-oxydianiline (ODA) and 3,3′,4,4′-benzophenonetetracarboxylic acid dianhydride (BTDA) as co-monomers, and nadic anhydride as an end cap reagent. The adhesives with different MDA and ODA contents were examined in terms of their structure, thermal stability, mechanical properties, and adhesive performance. They have glass transition temperatures (T g) about 400 °C, with thermal stability up to 500 °C. The effect of diamine monomer compositions on adhesion performance and processability of the copolyimides were studied. The copolyimides exhibited adhesion strength up to 16.3 MPa at room temperature. Nadic end capped MDA-BTDA-ODA copolyimide resins gained adjustable and controllable processability with the addition of ether bridged aromatic segments. The copolyimide adhesive with equimolar composition of MDA:ODA is distinguished form the both commercial PMR-15 and LARC RP-46 polyimides in terms of its better processability and mechanical performance.

Source

Materials Research Express

Volume

5

Issue

10

URI

https://doi.org/10.1088/2053-1591/aadb2e
https://hdl.handle.net/11147/7637

Collections

  • Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği [181]
  • Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection [4673]
  • WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection [4803]



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