Experimental and Numerical Simulation Study of an Air drawing Model of Polyethylene Terephthalate (PET) Polymer and Model of Air Jet Flow Field in the Spunbonding Nonwoven Process

Bo, Z

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Tytuł artykułu

Experimental and Numerical Simulation Study of an Air drawing Model of Polyethylene Terephthalate (PET) Polymer and Model of Air Jet Flow Field in the Spunbonding Nonwoven Process

Autorzy

Bo Z

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Warianty tytułu

Badanie eksperymentalne i numeryczne modelu przepływu powietrza przy produkcji włóknin spunbonded z PET

Języki publikacji

Abstrakty

An air drawing model of polyethylene terephthalate (PET) polymer and one of the air jet flow field in the spunbonding process are established. The air jet flow field model is solved and simulated by means of the finite difference method. Numerical simulation computation results of the distributions of air velocity match quite well with the experimental data. The air drawing model of the polymer is solved with the help of distributions of air velocity measured by Particle Image Velocimetry. The model’s predictions of filament fiber diameters, crystallinities and birefringences coincide well with the experimental data. Therefore it can be concluded that a higher initial air temperature can yield finer filament fiber diameter, and a higher initial air velocity can produce a finer fiber diameter as well. The experimental results show that the agreement between the results and experimental data is much better, which verifies the reliability of these models. Also they reveal great prospects for this work in the field of the computer assisted design (CAD) of the spunbonding process.

Opracowano model przepływu powietrza nadmuchiwanego przy wytwarzaniu włóknin spunbonded z PET. Model pola przepływowego powietrza wydmuchiwanego z dyszy został rozwiązany i zasymulowany za pomocą metody skończonych różnic. Wyniki numerycznej symulacji rozkładu prędkości powietrza zgadzają się z wynikami eksperymentalnymi mierzonymi za pomocą analizy obrazu cząstek. Przewidziane w wyniku analizy modelu średnice włókien, krystaliczność i dwójłomność zgadzają się z wynikami doświadczalnymi. Dlatego można wnioskować, że wyższa temperatura początkowa może prowadzić do cieńszych włókien, podobnie jak wyższa prędkość początkowa. Jak wynika z przeprowadzonej analizy, sposób rozwiązania tego zagadnienia może być pomocny przy projektowaniu procesu otrzymywania włóknin w systemie spunbonded.

Słowa kluczowe

spunbonding polyethylene terephthalate air drawing model air jet flow field polymer fiber diameter crystallinity birefringence drawing numerical computation

włókna spunbonded z PET politereftalan etylenu model rysunku powietrza przepływ powietrza pola przepływu strumienia powietrza polimer rysunek obliczenia numeryczne

Wydawca

Sieć Badawcza Łukasiewicz - Łódzki Instytut Technologiczny

Czasopismo

Fibres & Textiles in Eastern Europe

Rocznik

2014

Tom

Vol. 22, no. 1 (103)

Strony

89--96

Opis fizyczny

Bibliogr. 32 poz., rys., tab.,

Twórcy

autor

Bo Z

zhaobohenan@sina.com

P. R. China, Zhengzhou, Zhongyuan University of Technology, College of Textiles

Bibliografia

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Bibliografia

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