- 【Updated on May 12, 2025】 Integration of CiNii Dissertations and CiNii Books into CiNii Research
- Trial version of CiNii Research Knowledge Graph Search feature is available on CiNii Labs
- 【Updated on June 30, 2025】Suspension and deletion of data provided by Nikkei BP
- Regarding the recording of “Research Data” and “Evidence Data”
Bibliographic Information
- Other Title
-
- ジシアンジアミド硬化エポキシ樹脂の物性とナノ構造の関係
Search this article
Description
Relationshipbetweenmechanical,physicalpropertiesandinternalstructureofdicyandiamidecuredbisphenol-Aepoxyresinswerestudied.Threekindsofcuredepoxyformulationweremadeusingmixturescomposedofseveralbisphenol-Aepoxyoligomers,whichhavedifferentdistributionofepoxyequivalent(molecularweights)eachother.Thethreecuredresinshadalmostidenticalrubberyplateauvalueofstoragemodulusofelasticityindynamicmechanicalanalyses,whichmeansthecuredresinshadalmostsame"average"crosslinkdensity.However,themechanicalandphysicalpropertiesofthecuredresinswereinlargediversity.Theglasstransitiontemperature(Tg)andthesolventresistancedecreasedwithenhancingthedistributionofepoxyequivalent(molecularweights).Thecompressiveyieldstressofthecuredresinsincreasedwithenhancingthedistributionofepoxyequivalent・Inthemeantime,thecompressivefracturestrainandthefracturetoughness(K,,;)increasedwithdecreasingthedistributionofepoxyequivalentintheepoxyformulation.Thesephenomenasuggestthatthepropertiesofcuredepoxyresinswereunderthecontrolnotonlyofchemicalstructuresofepoxyoligomersandthe"average"crosslinkdensity,butalsoofnon-uniformgelstructurewhichweredeterminedinthecureprocessofeachresinformulation.Scanningprobemicroscopyandelectronmicroscopyrevealedthattheexistenceofnano-sizestructureinthecuredresins.Thedifferenceinthephasestructureconsistingofahard-phaseandasoft-phase,suchasthesizeandtheconnectivityofeachphase,wouldbethekeyfactorswhichexplainthediversityofthepropertiesoftheresins.
Journal
-
- Journal of The Adhesion Society of Japan
-
Journal of The Adhesion Society of Japan 41 (3), 84-92, 2005
The Adhesion Society of Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1390001204276350080
-
- NII Article ID
- 130004714440
-
- COI
- 1:CAS:528:DC%2BD2MXisl2jt70%3D
-
- ISSN
- 21874816
- 09164812
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed