EFFECT OF TEMPERATURE ON PERMEABILITY OF WATER VAPOR THROUGH EPOXY COATING WITH TALCUM POWDER COATED BY STEARIC ACID
温度变化对含硬脂酸包覆滑石粉环氧涂层渗水率的影响

The permeability of water vapor through epoxy coatings with talcum powder coated by stearic acid was measured by permeation cup, the apparent permeation activation energy was calculated. The experiment results show that the water vapor permeability increased with increasing temperature, however, saturated water absorption of the coating changed very little. The apparent permeation activation energy of water vapor through epoxy coating with talcum powder coated by stearic acid is obviously higher than that free of stearic acid.