▎ 摘　　要

NOVELTY - Latent active filler composition comprises 60-70 wt.% solid epoxy resin composition EG as main raw material, 10-13 wt.% modified phenolic curing agent, 0-1.5 wt.% pigments and fillers, and 20.01-26 wt.% other additives, preferably the solid epoxy resin composition EG includes: 50-100 wt.% modified solid epoxy resin, 0-50 wt.% o-cresol novolac epoxy resin and 0-50 wt.% bisphenol A novolac epoxy resin, more preferably the modified solid epoxy resin adopts high glass transition temperature and high toughness modified solid epoxy resin. USE - Used as latent active filler composition. ADVANTAGE - The composition: increases the glass transition temperature and crosslinking density of the overall coating; achieves the purpose of high temperature resistance through the latent secondary reaction; is suitable for long time in acid-base salt medium of less than or equal to 130 degrees C. DETAILED DESCRIPTION - Latent active filler composition comprises 60-70 wt.% solid epoxy resin composition EG as main raw material, 10-13 wt.% modified phenolic curing agent, 0-1.5 wt.% pigments and fillers, and 20.01-26 wt.% other additives, preferably the solid epoxy resin composition EG includes: 50-100 wt.% modified solid epoxy resin, 0-50 wt.% o-cresol novolac epoxy resin and 0-50 wt.% bisphenol A novolac epoxy resin, more preferably the modified solid epoxy resin adopts high glass transition temperature and high toughness modified solid epoxy resin, more preferably, the glass transition temperature of the modified solid epoxy resin is 128-178 degrees C, the softening point is 96-115 degrees C, the epoxy value is 0.19-0.275 mol/100 g, the functionality is 2.6, more preferably the softening point of the o-cresol epoxy resin temperature-resistant epoxy resin is 90-105 degrees C, more preferably, the softening point of the bisphenol A novolac epoxy resin is 90-105 degrees C, preferably the modified phenolic curing agent is modified phenolic curing agent Amanda879X, which contains three functional groups, does not contain an accelerator and is resistant to high temperature cathodic stripping: 3.5-4 mm, preferably the pigment and filler are gold stone titanium dioxide, preferably the other additives include: 0.2-0.4 wt.% accelerator, 1-1.5 wt.% leveling agent, 0.3-0.4 wt.% loose flow dispersant, 0.5 wt.% degassing agent, 0.01-0.02 wt.% graphene, 10-12 wt.% silicon carbide, 5-7 wt.% mica powder and 3-3.5 wt.% porous powder quartz. INDEPENDENT CLAIMS are also included for: (1) preparing the latent active filler composition, comprising uniformly mixing solid epoxy resin composition EG, modified phenolic curing agent, pigments and fillers and other additives, then melt-mixing and extruding to obtain an extrudate, grinding the extrudate and then sieving to obtain powdered latent active filler composition, preferably the mixing is carried out in a high-speed mixer, when mixing is performed 2 times in total, the mixing time for the first and second times is 3-3.5 minutes, respectively, when mixing 3 times in total, the mixing time for the first and third time is 3-3.5 minutes respectively, the time for the second mixing is 1.5-2 minutes, preferably the melt-kneading extrusion is performed in a screw extruder to obtain an extrudate, the temperature in zone 1 of the extruder is 95-100 degrees C, the temperature in zone 2 is 85-90 degrees C, the speed is 280-310 revolutions/minute, more preferably the extrudate is ground and then sieved to obtain powdered latent active filler composition, more preferably, the grinding is carried out in an ACM mill, using 200-mesh sieve for sieving, and taking the undersize as the latent active filler composition; (2) solvent-free, high-temperature-resistant and permeable liquid polymer composite coating material; (3) preparing solvent-free, high-temperature-resistant and permeable liquid polymer composite coating material; and (4) preparing solvent-free, high-temperature-resistant and permeable liquid polymer coating.