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15:13 Nov 26, 2019 |
English to Polish translations [PRO] Tech/Engineering - Construction / Civil Engineering / Parts of manufaturing plant | |||||||
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| Selected response from: Frank Szmulowicz, Ph. D. United States Local time: 11:11 | ||||||
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3 | sala do odlewania folii |
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3 | odlewnia |
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sala do odlewania folii Explanation: Preparation of Films PVA films were produced by a casting evaporation technique from aqueous polymer solutions. Accurate weights of PVA powders with different weight ratios were added into distilled water and left to hydrate overnight. The next day, the dispersions were heated in a water bath at 80—90 °C for 30—60 min and then made up to 8% PVA solutions. The solutions were left to stand until trapped air bubbles were removed, and then cooled to ambient temperature. Different amounts of the polymer solutions (10, 15, 20 g) were poured into glass petri dishes (diameter 10 cm) and oven-dried at about 50 °C for 24 h. The dried films were peeled from the petri dishes and stored in a desiccator at room temperature. Before permeation studies and tensile tests, dried films were cut into circular test sections with area of 19.625 cm2 and rectangular test sections with size of 137 cm2, respectively. The thickness of the films was measured by using a micrometer (Mitutoyo, No. 293-721-30 CE, Japan). At least five thickness readings at different regions were taken for each test section and the results averaged. https://www.researchgate.net/post/how_to_prepare_a_thick_fil... ccccccccccc METODY PRZETWÓRSTWA TWORZYW POLIMEROWYCH wtryskiwanie, wytłaczanie, prasowanie, laminowanie, odlewanie, kalandrowanie mieszanie http://bc.pollub.pl/Content/13118/PDF/nowoczesne.pdf -------------------------------------------------- Note added at 23 mins (2019-11-26 15:37:27 GMT) -------------------------------------------------- cccccccc POLIWĘGLANY: Są to liniowe nasycone poliestry kwasu węglowego i dioli. Zawierają w swych cząst. węglanowe ugrupowania wiążące. Zależnie od budowy łańcucha, dzielą się na alifatyczne, aromatyczna i alif. - aromat. Wśród wielu metod otrzymywania, najważniejsze to: metoda bezpośredniej kondensacji fosgenu z dianem w fazie homogenicznej lub na granicy dwóch nie mieszających się faz oraz metoda transestryfikacji (przeestryfikowania) węglanów arylowych z difenolami. Właściwości: są termoplastami, duża sztywność, duża lepkość w stanie stopionym, wysoka T zeszklenia, mały stopień krystaliczności. Duża udarność. Słaba chemoodporność i odporność na korozję naprężeniową. Przetwórstwo: wtrysk, wytłaczanie, formowanie próżniowe, odlewanie folii z roztworu. Łatwa obróbka mechaniczna. http://www.scritub.com/limba/poloneza/CIAR-CZSTECZKOWY-I-ODD... cccccccccccccccccccccccccc |
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odlewnia Explanation: . |
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