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Cipalite 7840 is a medium viscosity cyanoacrylate. It is suitable for bonding a wide range of materials, including porous materials, where fast curing speed is required. Cipalite 7840 is specially formulated to form strong bonds on common substrates, with good results and work performance on acidic and porous substrates, where other cyanoacrylates do not achieve good adhesion. Used to bond: wood, rubber, cork, leather, cardboard and similar surfaces. It has less dependence on surface moisture for curing speed, as is the case with most cyanoacrylates.

Product Type: Adhesive, Solventborne Adhesive

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Cork, Elastomers & Rubbers, Leather, Metal, Steel, Textiles, Wood

Chemical Family: Acrylics & Acrylates

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family

    Features & Benefits

    Applications & Uses

    Application Method

    Bonding speed is very fast, so ensure the parts are aligned correctly before bonding. The product is normally applied manually from the package. Apply sparingly to a surface and press down firmly until the required strength is achieved. As a general rule, application of too little cyanoacrylate can result in slow cure speed and lower tensile strength.

    • Cure Speed vs Environmental Conditions : Cyanoacrylate requires surface moisture on the substrates in order to initiate the curing mechanism. Cure speed is slower under low humidity conditions. Low temperatures will also reduce the curing speed. All relative cure speed values are tested at 21°C.
    • Healing Speed vs Bond Opening : Cyanoacrylates give better results when assembling close parts. The product should be applied in a very thin line to ensure rapid polymerization and a strong bond. Excessive clearances resulted in slower cure speeds.
    • Heat Resistance : Cyanoacrylates are suitable for use at temperatures up to 80ºC. At 80°C, the bond will be approximately 70% of the strength obtained at 21°C. The bond strength at 100°C is approximately 50% of the maximum strength obtained at 21°C.
    • Heat Aging : Cyanoacrylates retain over 90% of their strength when heated to 80°C for 90 days, then tested at 21°C. Heating the bond to 100°C and then testing at 21°C yields a bond strength of approximately 50% of the initial strength.
    • Chemical Resistance / Solvents : Cyanoacrylates exhibit excellent chemical resistance to most oils and solvents, including motor oil, leaded gasoline, ethanol, propanol. Cyanoacrylates are not resistant to high levels of humidity and humidity over time.

    Properties

    Color
    Physical Form
    Characteristics
    ValueUnitsTest Method / Conditions
    Viscosity (Brookfield RVTD-Spindle 4, 20 rpm, 20°C)8 - 120cPsISO 6922
    Fixation Time3 - 20seconds
    Resistance to Traction21N/mm²
    Total Cure Time24hrs
    Working Temperature-50 to 80°C
    Cure Performance (Steel)max. 20seconds
    Cure Performance (ABS)max. 10seconds
    Cure Performance (Rubber)max. 5seconds
    Cure Performance (Balsa Wood)max. 3seconds

    Regulatory & Compliance

    Certifications & Compliance

    Packaging & Availability

    Packaging Information

    12.5 Liters

    Storage & Handling

    Shelf Life
    12 Months
    Storage Information

    This product should be stored in a cool, well-ventilated place, in its tightly closed original packaging, protected from moisture and sunlight, and at temperatures above 15°C. This product is sensitive to cold, it may gel at temperatures lower than those indicated above. Under these conditions the product is valid for 12 months.