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    • Chemical
    resistance

     

    Resin systems are often used in very aggressive media and therefore have to offer good chemical resistance properties. Such requirements have to be taken into account in advance when selecting a resin system.

    Representative products

    WEVOPUR 930 M

    • Good chemical resistance for automotive applications
    • Good adhesion
    • Flexible at low temperatures/low Tg  
    • Good thermal shock characteristics at -40 °C to +140 °C

     

    WEVOPUR 3050

    • Good hydrolysis resistance
    • Curing possible under water
    • High dielectric strength
    • Simple mixing ratio (2:1)

    Resins require good chemical resistance properties when protecting parts in aggressive media.

    Chemical resistance as a property of a casted material

    Diesel + + Transmission oil + +
    FAM testing fuel + + ATF oil + +
    Battery acid + + M 15 testing fuel 0
    Brake fluid TL766 0 Mineral oil + +
    Coolant TL744 + + Hydraulic oil + +
    Motor oil + + Glass cleaner 0
    Cleaner + + Cola + +
    Ethanol * Salt water + +

    + +    High resistance
    0           Limited resistance
    *             Good resistance at 22 °C, limited at 120 °C

    Example: Wevopur 930 M mit Wevonat 600
    Storage: 24h at 22 °C  and 24 h at 120 °C

    System dependence 

    Chemical resistance is related to the degree of cross-linking of a system. In most cases, the denser a system’s polymer structure of the system, the better its chemical resistance. For applications in aggressive media, such as brake fluids, hydraulic oils or fuels, a system’s chemical resistance must always be rigorously examined.