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The Influence of Ethynyl In-Chain Crosslinkers on the Properties of 6FDA-Based Polyimides
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- Petkov, Valeri Ivanov (author)
- Luleå tekniska universitet,Materialvetenskap
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- Pelcastre, Leonardo (author)
- Luleå tekniska universitet,Maskinelement
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- Solano, Carlos (author)
- Nexam Chemical AB, 234 35 Lomma, Sweden
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- (creator_code:org_t)
- 2022-12-24
- 2022
- English.
- In: Materials. - : MDPI. - 1996-1944. ; 16:1
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Two 4,4′-(hexafluoroisopropylidene)diphthalic anhydride-based thermosetting polyimide formulations with varied amounts of crosslinking sites were compared to understand the influence of crosslinking density on fracture toughness, glass transition temperature and thermal oxidative stability. The thermal and mechanical properties of both materials were investigated through a series of single-edge notched beams, differential scanning calorimetry, dilatometry, weight loss, light optical microscopy and nanoindentation experiments. It was found out that the reduced crosslinking resulted in slightly increased fracture toughness but decreased the Tg of the material. No significant difference could be observed in the thermal oxidative stability with the experimental techniques considered.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
Keyword
- Polyimide
- Fracture toughness
- Thermal oxidative aging
- DSC
- Nano-indentation
- Maskinelement
- Machine Elements
- Polymera kompositmaterial
- Polymeric Composite Materials
Publication and Content Type
- ref (subject category)
- art (subject category)
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