Epoxy resin has secondary hydroxyl groups and epoxy groups, which can react with isocyanates. Epoxy resin, as a polyol, is directly added to the hydroxyl containing component of polyurethane adhesive. Using this method, only the hydroxyl group participates in the reaction, and the epoxy group fails...
The classification of epoxy resin is currently not unified, generally classified according to strength, heat resistance level, and characteristics. There are 16 main varieties of epoxy resin, including general adhesive, structural adhesive, high-temperature adhesive, low-temperature adhesive, adhesi...
Principle: At a constant temperature, measure the time for a certain volume of liquid to flow through a calibrated glass capillary viscometer under gravity. The product of the capillary constant of the viscometer and the flow time is the kinematic viscosity of the measured liquid at that temperature...