BS 2782-8.835C(1980) : 1980已作废
METHODS OF TESTING PLASTICS - OTHER PROPERTIES - DETERMINATION OF GELATION TIME OF POLYESTER AND EPOXIDE RESINS USING A GEL TIMER
出版：British Standards Institution
专家解读视频
Specifies a procedure for determining the time for a polyester or epoxide resin system maintained at a specified temperature to reach the stage in the process of hardening at which resistance to movement of a plunger, immersed in the resin and mechanically driven with a slow reciprocating motion, reaches a value indicative of the onset of elasticity due to gelation. Suitable for systems which the gelation time at the test temperature is not less than about 5 min. Results on high viscosity resins or filled systems should be treated with caution because of the effects of differences in viscoelasticity or the densities of the mixtures.
