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  2. Epoxy value - Wikipedia

    en.wikipedia.org/wiki/Epoxy_value

    The epoxy value is defined as the number of moles of epoxy group per 100g resin. So as an example using an epoxy resin with molar mass of 382 and that has 2 moles of epoxy groups per mole of resin, the EEW = 382/2 = 191, and the epoxy value is calculated as follows: 100/191 = 0.53 (i.e. the epoxy value of the resin is 0.53). [6]

  3. List of boiling and freezing information of solvents - Wikipedia

    en.wikipedia.org/wiki/List_of_boiling_and...

    This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.

  4. Amine value - Wikipedia

    en.wikipedia.org/wiki/Amine_value

    The amine value is useful in helping determine the correct stoichiometry of a two component amine cure epoxy resin system. [6] [7] [8]It is the number of Nitrogens x 56.1 (Mwt of KOH) x 1000 (convert to milligrams) divided by molecular mass of the amine functional compound.

  5. Hansen solubility parameter - Wikipedia

    en.wikipedia.org/wiki/Hansen_solubility_parameter

    A typical example showing why Hildebrand parameters can be unhelpful is that two solvents, butanol and nitroethane, which have the same Hildebrand parameter, are each incapable of dissolving typical epoxy polymers. Yet a 50:50 mix gives a good solvency for epoxies.

  6. Flory–Fox equation - Wikipedia

    en.wikipedia.org/wiki/Flory–Fox_equation

    The Flory–Fox equation relates the number-average molecular weight, M n, to the glass transition temperature, T g, as shown below: =, where T g,∞ is the maximum glass transition temperature that can be achieved at a theoretical infinite molecular weight and K is an empirical parameter that is related to the free volume present in the polymer sample.

  7. Rule of mixtures - Wikipedia

    en.wikipedia.org/wiki/Rule_of_mixtures

    where is the volume fraction of the fibers in the composite (and is the volume fraction of the matrix).. If it is assumed that the composite material behaves as a linear-elastic material, i.e., abiding Hooke's law = for some elastic modulus of the composite and some strain of the composite , then equations 1 and 2 can be combined to give

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  9. Fiberglass sheet laminating - Wikipedia

    en.wikipedia.org/wiki/Fiberglass_sheet_laminating

    Start by applying the epoxy to the fiberglass sheet. Continue carefully but quickly until all areas are sufficiently covered by the epoxy. Next, start at one end of the material to be strengthened and stick the epoxy covered fiberglass to the material, being sure to smooth out any bubbles that may form between the material and fiberglass.

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