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    Home > Chemicals Industry > Rubber Plastic News > R&D personnel use used edible oil as raw material for polyurethane foam

    R&D personnel use used edible oil as raw material for polyurethane foam

    • Last Update: 2023-02-01
    • Source: Internet
    • Author: User
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    A group at the Krakow University of Technology in Poland has developed an open-cell polyurethane foam in which all polyol components are derived from used cooking oil

    The team led by Krzysztof Polaczek said that although bio-based polyols derived from vegetable oils have higher viscosities and lower hydroxyl values ​​than petrochemical polyols, limiting their usefulness
    However, they managed to successfully create an open-cell polyurethane foam system


    They carefully studied the properties of bio-based polyols, especially the effect of molecular weight, viscosity and hydroxyl value on foam properties
    This includes apparent density, thermal conductivity, closed cell content, mechanical strength, brittleness and short-term water absorption


    They found that in the manufacture of biopolyols for polyurethane foam, the key step is the epoxidation reaction, and the epoxy value has a significant effect on the number of oligomerization side reactions that occur during the epoxide ring opening process

    Open cell foams made using these polyols have properties comparable to commercial products
    This includes an apparent density of 12.
    3kg/m3, a thermal conductivity of 36.
    2 mW/mK, and a closed cell content of less than 10%


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