Effect of backbone binders on rheological performance of ceramic injection molding feedstocks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F17%3A63516641" target="_blank" >RIV/70883521:28610/17:63516641 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/pen.24621/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/pen.24621/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pen.24621" target="_blank" >10.1002/pen.24621</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of backbone binders on rheological performance of ceramic injection molding feedstocks

Popis výsledku v původním jazyce

In a novel binder system, carnauba wax (CW), and acrawax (AW) (N,N′-Ethylene Bis-stearamide) were considered to replace the synthetic backbone polymers (polyolefins) in aluminum oxide (Al2O3) Ceramic Injection Molding feedstocks. For both proposed substitutes there is a significant reduction in viscosity in comparison to polyolefin based binder and also commercially available one, and in case of CW based feedstock also in processing temperature, which is essential for injection molding of reactive powders. For all ceramic feedstocks studied, there is a nonmonotonous dependence of viscosity on shear rate/stress, whose fitting requires eight-parameter model. At the processing-relevant shear conditions, polyolefin based feedstocks show dilatant cause, whereas both CW and AW compounds have a pseudoplastic manner. Thermal characterization was used to evaluate i(miscibility) of the neat binder components, their mixtures and mixtures with Al2O3. The presence of powder lowered melting temperatures of all tested binders except of polyolefin. Further depression in melting point of poly(ethylene glycol) is observed in combination with polyolefin in the presence of powder, and it is related to changes in size of the crystalline domains. POLYM. ENG. SCI., 57:739–745, 2017. © 2017 Society of Plastics Engineers.

Název v anglickém jazyce

Effect of backbone binders on rheological performance of ceramic injection molding feedstocks

Popis výsledku anglicky

In a novel binder system, carnauba wax (CW), and acrawax (AW) (N,N′-Ethylene Bis-stearamide) were considered to replace the synthetic backbone polymers (polyolefins) in aluminum oxide (Al2O3) Ceramic Injection Molding feedstocks. For both proposed substitutes there is a significant reduction in viscosity in comparison to polyolefin based binder and also commercially available one, and in case of CW based feedstock also in processing temperature, which is essential for injection molding of reactive powders. For all ceramic feedstocks studied, there is a nonmonotonous dependence of viscosity on shear rate/stress, whose fitting requires eight-parameter model. At the processing-relevant shear conditions, polyolefin based feedstocks show dilatant cause, whereas both CW and AW compounds have a pseudoplastic manner. Thermal characterization was used to evaluate i(miscibility) of the neat binder components, their mixtures and mixtures with Al2O3. The presence of powder lowered melting temperatures of all tested binders except of polyolefin. Further depression in melting point of poly(ethylene glycol) is observed in combination with polyolefin in the presence of powder, and it is related to changes in size of the crystalline domains. POLYM. ENG. SCI., 57:739–745, 2017. © 2017 Society of Plastics Engineers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/LO1504" target="_blank" >LO1504: Centrum polymerních systémů plus</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Polymer Engineering and Science

ISSN

0032-3888

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

739-745

Kód UT WoS článku

000405296400016

EID výsledku v databázi Scopus

2-s2.0-85020411404