In-vitro testing of solubility of thermal insulation fibers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920855" target="_blank" >RIV/60461373:22310/20:43920855 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1328" target="_blank" >https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1328</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/cs.2020.0018" target="_blank" >10.13168/cs.2020.0018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In-vitro testing of solubility of thermal insulation fibers

Popis výsledku v původním jazyce

This recent work presents the results of dissolution of glass fibers in corrosion medium. The main objective of this research was to obtain the information about long-term dissolution of three types commercially produced glass fibers (E-fibers, fibers Promaglaf HTI 1200 and Promaglaf HTI 1250), which are commonly used as thermal insulation. The long-term dissolution of fibers was investigated at the temperature of 37°C by dynamic flow-through tests in simulated lung fluid (SLF). The flow rate of SLF was 120 ml/day. In solutions, the pH values and changes in weight loss of fibers were measured and changes in corrosion medium were evaluated by AAS. Also the values of the time dependence of the normalized leach amount of glass components (NLi) were computed and were compared with the data of NLi obtained from kinetic model of UCT Prague. The changes in appearance and composition of the fibers were evaluated with SEM-EDS techniques. This research confirmed that all fibers were dissolving in SLF, but each type differently. E-fibers dissolved nearly congruently, compared to fibers Promaglaf HTI 1200 and 1250 which were less soluble than E-fibers and dissolved incongruently. That was caused by production of precipitates - calcium phosphorous and silica layers.

Název v anglickém jazyce

In-vitro testing of solubility of thermal insulation fibers

Popis výsledku anglicky

This recent work presents the results of dissolution of glass fibers in corrosion medium. The main objective of this research was to obtain the information about long-term dissolution of three types commercially produced glass fibers (E-fibers, fibers Promaglaf HTI 1200 and Promaglaf HTI 1250), which are commonly used as thermal insulation. The long-term dissolution of fibers was investigated at the temperature of 37°C by dynamic flow-through tests in simulated lung fluid (SLF). The flow rate of SLF was 120 ml/day. In solutions, the pH values and changes in weight loss of fibers were measured and changes in corrosion medium were evaluated by AAS. Also the values of the time dependence of the normalized leach amount of glass components (NLi) were computed and were compared with the data of NLi obtained from kinetic model of UCT Prague. The changes in appearance and composition of the fibers were evaluated with SEM-EDS techniques. This research confirmed that all fibers were dissolving in SLF, but each type differently. E-fibers dissolved nearly congruently, compared to fibers Promaglaf HTI 1200 and 1250 which were less soluble than E-fibers and dissolved incongruently. That was caused by production of precipitates - calcium phosphorous and silica layers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ceramics-Silikáty

ISSN

0862-5468

e-ISSN

—

Svazek periodika

64

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

289-298

Kód UT WoS článku

000567987200006

EID výsledku v databázi Scopus

2-s2.0-85090821830