Effects of environmental aging on physical properties of aromatic thermosetting copolyester matrix neat and nanocomposite foams

Bakır, Mete; Henderson, Christine N.; Meyer, Jacob L.; Oh, Junho; Miljkovic, Nenad; Kumosa, M.; Economy, James; Jasiuk, Iwona

doi:10.1016/j.polymdegradstab.2017.11.009

Cited by 14 publications

(10 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermosetting resins generally exist in liquid form and are cured through a chemical reaction. The raw materials of thermosetting resins have epoxy resin, phenolic resin, polyester, and PU [71,72,73,74,75,76,77,78].…”

Section: Polymer Foaming and Processingmentioning

confidence: 99%

Recent Trends of Foaming in Polymer Processing: A Review

et al. 2019

View full text Add to dashboard Cite

Polymer foams have low density, good heat insulation, good sound insulation effects, high specific strength, and high corrosion resistance, and are widely used in civil and industrial applications. In this paper, the classification of polymer foams, principles of the foaming process, types of blowing agents, and raw materials of polymer foams are reviewed. The research progress of various foaming methods and the current problems and possible solutions are discussed in detail.

show abstract

Section: Polymer Foaming and Processingmentioning

confidence: 99%

Recent Trends of Foaming in Polymer Processing: A Review

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Additionally, it is seen that in literature, the mechanical performance of epoxy is enhanced by GNP introducing in the range of 0-1 wt% [28][29][30], and also the rate of 2-5 wt% GNP preferred to provide effective barrier properties [31][32][33]. As a result, it is believed that the multi-scale composites modified with a low percentage of nanoparticles may absorb water molecules almost at the same rate after a long-term immersion period.…”

Section: Resultsmentioning

confidence: 94%

Deniz suyu yaşlandırmasının bazalt/grafen nanolevha-epoksi kompozitler üzerindeki etkisi: Dinamik mekanik analiz (DMA) ve kısa kiriş kayma testleri ile performans değerlendirmesi

Ulus¹

2020

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

View full text Add to dashboard Cite

ÖzetSeawater exposure has adverse effects on fiber-reinforced polymer (FRP) composites' mechanical performance and service life because polymer matrix degradation caused by absorbed water can initiate FRP composites' irreversible damage. So, composites' performance under service conditions must be comprehensively evaluated and improved for safe usage in marine structures. For this purpose, the addition of nanoparticles into the polymer matrix can be an effective strategy to reinforce the polymer matrix against the seawater environment's detrimental effects. This paper presents the impact of graphene nanoplatelet (GNP) on basalt/epoxy composites' mechanical performance under long-term seawater aging. Experimental results of short beam shear tests revealed that the addition of 0.5 wt% GNP enhanced interlaminar shear strength by approximately 24 and 14% compared with the neat basalt/epoxy composites for seawater aged and unaged specimens, respectively. The dynamic mechanical analysis has also deduced that the multi-scale composite's transition temperature increased up to 5.7% compared to the neat basalt/epoxy composites. Deniz suyu maruziyeti, fiber takviyeli polimer (FTP) kompozitlerin mekanik performansı ve hizmet ömrü üzerinde olumsuz etkilere sahiptir. Absorbe edilen su polimer matris bozulmasına yol açarak FTP kompozitlerin geri dönüşümsüz hasarını başlatabilmektedir. Bu sebeple, FTP kompozitlerin deniz yapılarında güvenle kullanımı için, servis koşullarındaki performanslarının kapsamlı bir şekilde anlaşılması ve iyileştirilmesi gerekmektedir. Bu amaç doğrultusunda, nanoparçacıkların polimer matris içerisine eklenmesi, deniz suyu ortamının zararlı etkilerine karşı polimer matrisini güçlendirmek için etkili bir stratejidir. Bu makale, grafen nanolevha (GNL) takviyesinin bazalt/epoksi kompozitlerin uzun süreli deniz suyu yaşlanması altında mekanik performansı üzerindeki etkisini sunmaktadır. Kısa kiriş kayma test sonuçları, deniz suyunda yaşlandırılmış ve yaşlandırılmamış numuneler için saf bazalt/epoksi kompozitlere kıyasla ağırlıkça %0.5 GNL eklenmesinin tabakalar-arası arası kayma mukavemetini sırasıyla yaklaşık %24 ve %14 artırdığını ortaya koymuştur. Dinamik mekanik analizlerde, çok-ölçekli kompozitlerin geçiş sıcaklığının, saf bazalt/epoksi kompozitlere kıyasla %5.7'ye kadar yükseldiğini ortaya çıkarmıştır.

show abstract

“…Hence, testing environment may be conceived to affect the chain relaxation dynamics at the interface . In this regard, our recent study on the effects of environmental aging on physical properties of ATSP neat and nanocomposite foams showed only marginal changes in the glass transition temperatures following extended exposure periods in aggressive environments . Besides, the geometrical factor (spatial confinement effect) due in part to the increased surface‐area‐to‐volume ratio for the foam structures did not necessarily induce any substantial changes in the glass transition regime, as compared to the bulk specimen, owing to having scalable (macrocellular) porous morphology for which corresponding T g peak positions were detected to be identical for both material forms [Fig.…”

Section: Resultsmentioning

confidence: 99%

Glass transition broadening via nanofiller‐contiguous polymer network in aromatic thermosetting copolyester nanocomposites

Bakır

Meyer

Sutrisno

et al. 2018

J Polym Sci B Polym Phys

Self Cite

View full text Add to dashboard Cite

The glass transition is a genuine imprint of temperature‐dependent structural relaxation dynamics of backbone chains in amorphous polymers, which can also reflect features of chemical transformations induced in macromolecular architectures. Optimization of thermophysical properties of polymer nanocomposites beyond the state of the art is contingent on strong interfacial bonding between nanofiller particles and host polymer matrix chains that accordingly modifies glass transition characteristics. Contemporary polymer nanocomposite configurations have demonstrated only marginal glass transition temperature shifts utilizing conventional polymer matrix and functionalized nanofiller combinations. We present nanofiller‐contiguous polymer network with aromatic thermosetting copolyester nanocomposites in which carbon nanofillers covalently conjugate with cure advancing crosslinked backbone chains through functional end‐groups of constituent precursor oligomers upon an in situ polymerization reaction. Via thoroughly transformed backbone chain configuration, the polymer nanocomposites demonstrate unprecedented glass transition peak broadening by about 100 °C along with significant temperature upshift of around 80 °C. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 1595–1603

show abstract

Effects of environmental aging on physical properties of aromatic thermosetting copolyester matrix neat and nanocomposite foams

Cited by 14 publications

References 50 publications

Recent Trends of Foaming in Polymer Processing: A Review

Recent Trends of Foaming in Polymer Processing: A Review

Deniz suyu yaşlandırmasının bazalt/grafen nanolevha-epoksi kompozitler üzerindeki etkisi: Dinamik mekanik analiz (DMA) ve kısa kiriş kayma testleri ile performans değerlendirmesi

Glass transition broadening via nanofiller‐contiguous polymer network in aromatic thermosetting copolyester nanocomposites

Contact Info

Product

Resources

About