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Wyszukujesz frazę "GEOPOL®" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-7 z 7
    Tytuł:
    GEOPOL®. The Innovated Environment Friendly Inorganic Binder System
    Autorzy:
    Vykoukal, M.
    Burian, A.
    Prerovska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/381696.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    geopolymer binder
    GEOPOL®
    inorganic binder
    environment
    mould and core
    spoiwo geopolimerowe
    spoiwo nieorganiczne
    środowisko
    Opis:
    This paper deals with the complete technology of inorganic geopolymer binder system GEOPOL® which is a result of long term research and development. The objective of this paper is to provide a theoretical and practical overview of the GEOPOL® binder system and introduce possible ways of moulds and cores production in foundries. GEOPOL® is a unique inorganic binder system, which is needed and welcomed in terms of the environment, the work environment, and the sustainable resources. The GEOPOL® technology is currently used in the foundries for three basic production processes/technologies: (1) for self-hardening moulding mixtures, (2) sand mixtures hardened by gaseous carbon dioxide and (3) the hot box technology with hot air hardening. The GEOPOL® technology not only solves the binder system and the ways of hardening, but also deals with the entire foundry production process. Low emissions produced during mixing of sand, moulding, handling, and pouring bring a relatively significant improvement of work conditions in foundries (no VOCs). A high percentage of the reclaim sand can be used again for the preparation of the moulding mixture.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 109-116
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gas Evolution of GEOPOL® W Sand Mixture and Comparison with Organic Binders
    Autorzy:
    Vykoukal, M.
    Burian, A.
    Přerovská, M.
    Bajer, T.
    Beňo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381545.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    geopolymer binder
    GEOPOL®
    gas evolution
    core
    gas
    environment
    safe of environment
    spoiwo geopolimerowe
    bezpieczne środowisko
    Opis:
    The article deals with the gas development of the geopolymer binder system hardened by heat and provides the comparison with organic binder systems. The GEOPOL® W technology is completely inorganic binder system, based on water. This fact allow that the gas generated during pouring is based on water vapour only. No dangerous emissions, fumes or unpleasant odours are developed. The calculated amount of water vapour generated from GEOPOL® W sand mixture is 1.9 cm3/g. The measured volume of gas for GEOPOL® W is 4.3 cm3/g. The measurement of gas evolution proves that the inorganic binder system GEOPOL® W generates very low volume of gas (water vapour) in comparison with PUR cold box amine and Croning. The amount of gas is several times lower than PUR cold box amine (3.7x) and Croning (4.2x). The experiment results are consistent with the literature sources. The difference between the calculated and the measured gas volume is justified by the reverse moisture absorption from the air after dehydration during storing and preparing the sand samples. Minimal generated volumes of gas/water vapour brings, mainly as was stated no dangerous emissions, also the following advantages: minimal risk of bubble defects creation, the good castings without defects, reduced costs for exhaust air treatment, no condensates on dies, reduced costs for cleaning.
    Źródło:
    Archives of Foundry Engineering; 2019, 2; 49-54
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dialectic of Russia’s war in Ukraine: between geopolitics and energy welfare
    Autorzy:
    Baranowski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2118956.pdf
    Data publikacji:
    2022-08-23
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    : war in Ukraine
    Russia’s invasion
    energy welfare
    social welfare
    geopol-
    itics
    Opis:
    Russia’s invasion of Ukraine has clearly shown how fragile the global geopolitical order is, in particular regarding the energy and food systems. International media picture a human tragedy of war intertwined with discussions of food and energy security. In addition, subjective fears of a decline in the quality of life and consumer welfare in developed European economies are voiced. The article aims to describe this specific dialectic related to the war as it reaches beyond warfare itself and increasingly affect the social welfare of European countries. Results of surveys conducted in ten European countries confirm the dominance of respondents’ concerns for their own socio-economic situation and their desire to end the war as soon as possible, even at the expense of Ukrainian concessions to Russia. These social attitudes are decisive when it comes to whether the Ukrainians may further be supported or not. Moreover, these sentiments must be taken into account by those in power in individual European countries. Ultimately, such attitudes may exert the pressure that could contribute to ending the war.
    Źródło:
    Society Register; 2022, 6, 3; 7-18
    2544-5502
    Pojawia się w:
    Society Register
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations of the influence of the matrix recycling on properties of the moulding sand with Geopol 618 binder
    Autorzy:
    Kamińska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/380390.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    self hardening moulding sand
    reclamation
    environment protection
    masa samoutwardzalna
    regeneracja
    ochrona środowiska
    Opis:
    Self-hardening moulding sands with water-glass hardened by liquid esters are applied in several foundry plants for making moulds for the production of heavy iron and steel castings. The main good point of this process is a low cost of sands. However, on account of a low susceptibility of this moulding sand for the matrix reclamation the fraction of sands originated from the reclamation is limited. The investigations presented in this work were aimed at the determination of the addition of the reclaimed material, obtained in the dry mechanical reclamation, on properties of the moulding sand with the Geopol 618 binder, which is water-glass modified by polymers and hardened by esters.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 1; 69-72
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Binding Rates on Strength Properties of Moulding Sands with the GEOPOL Binder
    Autorzy:
    Holtzer, M.
    Drożyński, D.
    Bobrowski, A.
    Plaza, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/381664.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mechanical properties
    technological properties
    moulding sands
    geopolymer
    inorganic binder
    właściwości mechaniczne
    właściwości technologiczne
    masy formierskie
    spoiwo nieorganiczne
    Opis:
    The results of investigations of moulding sands with an inorganic binder called GEOPOL, developed by the SAND TEAM Company are presented in the paper. Hardeners of various hardening rates are used for moulding sands with this binder. The main aim of investigations was determination of the influence of the hardening rate of moulding sands with the GEOPOL binder on technological properties of these sands (bending strength, tensile strength, permeability and grindability). In addition, the final strength of moulding sands of the selected compositions was determined by two methods: by splitting strength and shear strength measurements. No essential influence of the hardening rate on such parameters as: permeability, grindability and final strength was found. However, the sand in which the slowest hardener (SA 72) were used, after 1 hour of holding, had the tensile and bending strength practically zero. Thus, the time needed for taking to pieces the mould made of such moulding sand will be 1.5 - 2 hours.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1; 37-40
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Reclaim Addition on Properties of Moulding Sands with the Geopol Binder
    Autorzy:
    Drożyński, D.
    Bobrowski, A.
    Holtzer, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382996.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inorganic binder
    moulding sand
    geopolymer binder
    mechanical properties
    technological properties
    spoiwo nieorganiczne
    masa formierska
    spoiwo geopolimerowe
    właściwości mechaniczne
    właściwości technologiczne
    Opis:
    The investigation results of the influence of the reclaim additions on the properties of moulding sands with the GEOPOL geopolymer binder developed by the SAND TEAM Company were presented. Two brands of hardeners were applied in the tested compositions, the first one was developed by the SAND TEAM Company, marked SA72 and the new hardener offered by the KRATOS Company, marked KR72. The main purpose of investigations was to determine the influence of reclaim fractions and the applied hardener on the basic moulding sands properties, such as: bending and tensile strength, permeability and grindability. The unfavourable influence of the reclaim additions into moulding sands on the tested properties as well as an increased hardening rate, were found. Moulding sands, in which the hardener KR72 of the KRATOS Company was used, were less sensitive to the reclaim additions.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 1; 138-142
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elution of mixed moulding sands with the GEOPOL binder and core sands with the phenolic resin
    Autorzy:
    Holtzer, M.
    Żymankowska-Kumon, S.
    Dańko, R.
    Kmita, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/380919.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    environment protection
    phenolic resin
    moulding sand
    core sand
    BTEX
    PAHs
    ochrona środowiska
    żywica fenolowa
    masa formierska
    masa rdzeniowa
    Opis:
    Out of moulding and core sands used in the foundry industry, sands with organic binders deserve a special attention. These binders are based on synthetic resins, which ensure obtaining the proper technological properties and sound castings, however, they negatively influence the environment. Depending on the kind of the applied resin under an influence of a temperature such compounds as for example BTEX group and polycyclic aromatic hydrocarbons (PAHs) can be formed and released. During storing or economic utilization of used sand is possibility of eluting harmful substances into the environment. Therefore at assessing an influence of the used sand on the environment two above elements should be taken into consideration. Only such investigations provide the complete assessment of the given sand harmfulness.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 4; 53-56
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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