The detailed characteristics of silicon carbide hybrid polymer coatings are as follows:
1. Silicon carbide hybrid polymer coating has good corrosion resistance. Since the matrix resin used in the coating is a high-performance inorganic polymer, this type of resin has better corrosion resistance than epoxy resin.
2. Low penetration rate. The water vapor permeability of the silicon carbide hybrid polymer coating is 6 to 15 times higher than that of ordinary epoxy resin coatings, and 4 times higher than that of ordinary epoxy FRP.
3. The silicon carbide hybrid polymer coating has strong bonding strength, which not only refers to the high bonding strength between the resin matrix and the polymer in it, but also the bonding strength between the coating and the substrate. At the same time, the coating is not easy to crack, delaminate or peel off, and has good adhesion and impact strength, thereby ensuring better corrosion resistance.
4. Good resistance to temperature difference (thermal shock) performance. Because the coating contains inorganic polymers, the difference in the linear expansion coefficient between the coating and the steel is eliminated. The linear expansion of the coating is about 11.5×10-6m/m°C, and the linear expansion coefficient of the steel is 12.0×10 -6m/m°C, the two are relatively close, making the coating suitable for heavy corrosive environments with alternating temperatures.
5. Good wear resistance. Silicon carbide hybrid polymer coating has high hardness and toughness after curing, and has good scour and wear resistance in particles. The damage of the coating is local, and its diffusion tendency is small, and it is easy to repair.
6. It has a moderate cost. Compared with the main choices in the current FGD device: titanium composite plate, stainless steel, integral nickel-based alloy, integral glass fiber reinforced plastic, etc., the silicon carbide hybrid polymer coating layer has the best cost performance.
7. Silicon carbide hybrid polymer coatings have good processability. Since the solid content of the coating and the additives can be adjusted according to the needs, the coating can adapt to a variety of climates and configuration methods of various process requirements. It can solve the curing problem of low temperature climate and the length of the construction gap between each process
