Vaš brskalnik ne omogoča JavaScript!
JavaScript je nujen za pravilno delovanje teh spletnih strani. Omogočite JavaScript ali pa uporabite sodobnejši brskalnik.
Nacionalni portal odprte znanosti
Odprta znanost
DiKUL
slv
|
eng
Iskanje
Brskanje
Novo v RUL
Kaj je RUL
V številkah
Pomoč
Prijava
Long-term viscoelastic behavior of polyisobutylene sealants before and after thermal stabilization
ID
Gradišar Centa, Urška
(
Avtor
),
ID
Oseli, Alen
(
Avtor
),
ID
Mihelčič, Mohor
(
Avtor
),
ID
Kralj, Aleš
(
Avtor
),
ID
Žnidaršič, Matjaž
(
Avtor
),
ID
Halilovič, Miroslav
(
Avtor
),
ID
Slemenik Perše, Lidija
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(2,54 MB)
MD5: FF7C8DAA4534FB8089B2FE086502D2CF
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2073-4360/16/1/22
Galerija slik
Izvleček
Polyisobutylene (PIB) is commonly used as a primary sealant in multi-layer insulating glazing elements, where temperatures often exceed 100 °C. At such conditions, PIB undergoes structural changes, causing different relaxation dynamics and leading to decreased lifetime of the material. Understanding thermal behavior is therefore imperative for achieving effective insulation of these materials for long-term use in insulating application. The present study was focused on the temperature dependence of viscoelastic behavior of two commercially available polyisobutylene (PIB) materials, which are commonly used as primary sealants for energy-efficient multi-layer glazing units. The long-term viscoelastic behavior of the materials before and after thermal treatment at high temperatures was studied by using time–temperature superposition (tTS). Van-Gurp–Palmen plots were obtained directly from experimental data and enabled the study of thermally induced changes, while the relaxation time spectra were calculated from master curves and enabled the calculation of molecular weight distribution. The results showed that, after thermal treatment, the structure of PIB materials changes from linear to branched, while the molecular weight distributions transition from monomodal to bimodal. The untreated samples exhibited viscous-like behavior, while the thermally stabilized samples exhibited solid-like behavior, extending the material response for ~6 decades towards a longer timescale. Moreover, the presented results can be directly used to simulate the mechanical responses of the sealants using currently available FEM software packages to predict their functional and structural lifetime.
Jezik:
Angleški jezik
Ključne besede:
frequency–temperature superposition
,
polyisobutylene
,
relaxation time spectrum
,
structural changes
,
van Gurp–Palmen plot
,
viscoelastic properties
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2024
Št. strani:
14 str.
Številčenje:
Vol. 16, no. 1, [art. no. 22]
PID:
20.500.12556/RUL-153310
UDK:
539.3
ISSN pri članku:
2073-4360
DOI:
10.3390/polym16010022
COBISS.SI-ID:
178544387
Datum objave v RUL:
21.12.2023
Število ogledov:
486
Število prenosov:
33
Metapodatki:
Citiraj gradivo
Navadno besedilo
BibTeX
EndNote XML
EndNote/Refer
RIS
ABNT
ACM Ref
AMA
APA
Chicago 17th Author-Date
Harvard
IEEE
ISO 690
MLA
Vancouver
:
Kopiraj citat
Objavi na:
Gradivo je del revije
Naslov:
Polymers
Skrajšan naslov:
Polymers
Založnik:
Molecular Diversity Preservation International
ISSN:
2073-4360
COBISS.SI-ID:
517951257
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
frekvenčno-temperaturna superpozicija
,
poliisobutilen
,
časovno odvisen relaksacijski spekter
,
strukturne spremembe
,
van Gurp-Palmen diagram
,
viskoelastične lastnosti
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0264
Naslov:
Trajnostni Polimerni materiali in Tehnologije
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0263
Naslov:
Mehanika v tehniki
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
L2-3172
Naslov:
Razvoj tehničnih smernic za štirislojne zasteklitve
Podobna dela
Podobna dela v RUL:
Podobna dela v drugih slovenskih zbirkah:
Nazaj