SynthesisandCharacterizationofMelt-Processable HighTemperaturePolyimideResins

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SynthesisandCharacterizationofMelt-Processable HighTemperaturePolyimideResins
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Abstract:

Twoseriesofphenylethynylend-cappedpolyimideoligomersweresynthesizedandtheirthermaland rheologicalandmechanicalpropertieswerecharacterized.Theresultsshowthattwooligomersexhibitlowcomplexmelt viscosity(<1Pa·s)at280℃/2handarestableatthistemperature.Thesetwooligomerscanbeprocessedbyresin transfermoldingtechniques.TgandT5dofPI-1resinsare402℃and534℃respectively,PI-2resinsare356℃and 525℃respectively.TheretentionratesofpropertiesofPI-1resin/carbonfabriccompositearebeyond70%at300℃.

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Online: November 28,2016
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