Special high temperature-resistant coating on outer wall of tobacco-curing furnace and preparation method thereof

Abstract

The invention discloses a special high temperature-resistant coating on an outer wall of a tobacco-curing furnace, which consists of the following components according to parts by weight: 30-40 parts of organic silicon resin, 5-10 parts of aluminium paste, 8-12 parts of titanium white, 30-40 parts of mixed stuffing, 0.5-1.5 parts of organic bentonite, 2-4 parts of PM, 1-3 parts of PMA (Propylene Glycol Monomethyl Acetate), and 4-6 parts of absolute ethyl alcohol, wherein the mixed stuffing consists of the following components according to parts by weight: 35-45 parts of low-melting point glass powder, 10-20 parts of hollow ceramic microspheres, 10-20 parts of zinc phosphate, 5-15 parts of aluminum tripolyphosphate and 18-22 parts of talcum powder. The special high temperature-resistant coating on the outer wall of the tobacco-curing furnace mainly has the advantages that a viscosity number reaches 85s, the percentage of solid reaches 65%, surface dry only needs 16 minutes, hard dry only needs 6 hours, the thermal endurance is strong, and the coating is not stripped for 6h at 500 DEG C. The coating has the advantages of high temperature resistance, rust prevention, quick drying, heat insulation, environmental protection and the like, can satisfy the use requirements on the outer wall of the tobacco-curing furnace, and is especially applicable for the tobacco-curing furnace.

Description

technical field [0001] The invention relates to a high-temperature-resistant coating, in particular to a special high-temperature-resistant coating for the outer wall of a flue-cured furnace. Background technique [0002] Among the many equipment used to bake cigarette leaves, the oven is very common. Its structure mainly includes three main components: the furnace body, the flue, and the heat sink. When working, the surface temperature of these three main components is high and the difference is large. The temperature of the body is about 480°C to 500°C, the temperature of the flue is about 300°C to 320°C, and the temperature of the heat sink is about 420°C to 450°C. Since the oven is made of welded steel plates, when the surface of the steel plate is treated, only hand tools are used for simple deembroidery, and the air is used to blow off the floating dust, so there are still some rust spots and a small amount of oil stains on the surface to be removed. [0003] Silicone...

AI Technical Summary

Problems solved by technology

In the prior art, there is no high-temperature-resistant coating that is particularly suitable for baking ovens for baking cigarette leaves. This is because the high-temperature-resistant coating needs to be tailored according to the actual use of the workpiece, and the performance requirements should meet the following conditions: (1 ) Temperature resistance: >500°C; (2) Rust and anti-corrosion performance: In view of the substrate of the oven and the long turnaround period (up to 6 months); (3) Quick-drying: flue-cured tobacco ovens are often stored in open places, Considering climate change, quick drying can avoid being washed by rain and affect the coating performance; (4) heat insulation function: it is a functional consideration. (5) Environmental protection performance: the coating is required to be non-toxic, and the solvent is preferably an environmentally friendly solvent to avoid polluting the atmosphere and harming the health of workers