This standard specifies the test method for the B-stage transition time of phenolic resin on the B-stage transition test plate under certain conditions and at a certain temperature. This standard specifies two methods, and each method uses a different B-stage transition test panel: --Method A: spherical concave test panel; --Method B: non-concave flat test panel. This standard applies to resole phenolic resins and novolak phenolic resins containing curing agents.
GB/T 33316-2016 history
2016GB/T 33316-2016 Plastics—Phenolic resins—Determination of reactivity on a B-transformation test plate