DIN EN ISO 9396:2001-02

The document specifies a method for determining the gel time of phenolic resins at a given temperature, using automatic apparatus under specified conditions. The test temperatures are 100 °C, 130 °C and 150 °C. The method specified employs a plunger driven to carry out a reciprocating vertical motion. This method applies to the following types of phenolic resin: liquid resols, solid resols with low melting points. Powdered resins with a short gel time, such as mixtures of novolak and hexamethylenetetramine, do not lend themselves to this type of determination.