Brief introduction of high temperature thermal insulation coatings for boilers

1. Introduction:

The boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam with a certain thermal energy, high temperature boiler water or organic heat carrier. The temperature generated by the boiler should be above 1000 ℃, the oxidizing atmosphere is thick, the corrosion is serious, and the material is required to have a long service life. Jiangmen City Tufeng Chemical Boiler High-temperature Coating Expert proposed that the boiler must be painted with high-temperature coating as a necessary material for boiler operation or boiler material protection and energy saving in working conditions such as boilers.

Thermal insulation coating in boiler high temperature coating: DB-11M1088 boiler high temperature thermal insulation coating, temperature resistance 1000 ℃, can directly face the flame for a long time barbecue, excellent thermal insulation rate, the thermal conductivity of the coating is only 0.03W/ m.K, can effectively inhibit and shield infrared radiant heat and heat conduction, the thermal insulation inhibition efficiency can reach about 90%, can inhibit the thermal radiation and heat conduction loss of the high-temperature objects in the boiler, insulation, pressure resistance, and can be reused after curing. It is convenient to process and paint irregular objects. Jiangmen Tufeng Chemical Coatings can be directly painted on the surface of objects.

2. Composition:

The special paint for high temperature boiler is composed of high temperature inorganic epoxy silicate resin, aluminum slurry and other raw materials. Protective coating for double pack against high thermal oxidation.

3. Purpose:

1. Boilers, pipes, automobile exhaust pipes, burners, molds;

2. Electric furnace, induction furnace, electric heating element, rotary kiln, tank, box;

3. Small household appliances, kitchen utensils, induction cookers, etc.;

4. Electronic cigarettes, 3D printing heating body heat insulation components, chemical and metallurgical high temperature components.

Fourth, the test results:

Brushing on the surface of high temperature pipes, equipment, furnace (inside and outside), and containers can effectively suppress heat radiation and heat loss.

When the paint is applied to the surface of the object at 1100°C for 8mm, the surface temperature of the object can be reduced to within 100°C.

2. The heat loss can be reduced by more than 30% by applying only 6mm thick high temperature thermal insulation paint on the inner and outer surfaces of the hearth kiln.

3. Brushing on the inner wall of the furnace and kiln will be smoother and smoother than any material surface, and the flame infrared reflection function will reduce the heat absorption of the furnace wall and increase the flame temperature of the furnace.

4. Coat the box with a thickness of 10mm with a thickness of minus 30°C, and the temperature in the box shall not be higher than 0°C for 24 hours.

5. The chloride ion content of the coating is zero, which can also prevent the chloride and sulfide wet in the air or the process from entering the contact metal surface, which has a good anti-corrosion effect on the metal, and will not cause the embrittlement of the metal welded seam.

6. The coating can be used on flue, air duct, windshield, etc. The coating has good wear resistance and impact resistance.

7. The insulation coefficient of the coating is very high, and it has a good insulation effect at high temperature.

8. The coating has no peculiar smell, no deformation, and no decomposition under high temperature.

Five, product features:

High temperature thermal insulation coating has the characteristics of crack resistance, fire prevention, sound insulation, flame retardant, insulation, wear resistance, light weight, convenient construction and long service life.

1. Thermal insulation: It can effectively prevent heat transfer and continuously maintain the inherent temperature and energy of objects, such as heat insulation, heat preservation, cold preservation, and antifreeze.

2. Adhesion: 100% adhesion, strong adhesion, can be completely bonded to the material, and firmly attached to the surface of the object.

3. Anti-stretching property: It can prevent the expansion and contraction of the base material at different temperatures caused by cold/heat, and has good tensile strength and elasticity.

4. Hazardous: No odor, no or no harmful VOC substances, carcinogenic substances and other harmful polymers, decomposition products and by-products.

5. Stability: It has stable chemical properties, does not react with any substance, and is not affected by acid, alkali and corrosive substances.

6. Wear resistance: The ceramic particles of the coating are closely packed, and the solvent is compounded and strengthened, and the wear resistance is good.

7. Excellent toughness: It can effectively prevent the fracture caused by resistance in use.

6. How to use:

1. Paint ratio: [5 kg of paint: 1 kg of curing agent: 1-3 kg of thinner]

2. Preparation before painting

Paint preparation: The paint is evenly dispersed (no precipitation) and used directly. If applying for a long time, stir continuously during application to ensure uniform coating.

Substrate cleaning: degreasing and rust removal, the surface roughness is 30-60 microns. The surface of the object should be clean and dry, and should not be stained with water or other substances, otherwise it will affect the effect of the paint or even be scrapped.

3. Brushing method (the following coating methods can be used interchangeably as needed)

Brushing: A soft and hard medium brush can be applied evenly.

Roller coating: evenly roll coating can be applied.

4. Brush tool treatment and coating treatment

Coating tools: After cleaning with anhydrous ethanol or thinner, rinse with clean water and dry with compressed air for storage.

Coating treatment: According to the actual needs of heat insulation and anti-corrosion, it can be coated to an appropriate thickness, and it can be heated and dried quickly or dried at room temperature.

Seven, matters needing attention

1. The main paint and thinner should be sealed and stored in a cool place, protected from fire, leakage, sun protection, high temperature, and away from fire sources

2. After the product is opened, it should be fully stirred and evenly mixed, and the residue at the bottom of the can is mixed into the color mixing tank, so that the pigment sinks to the bottom and has a color difference. 3. The main paint and curing agent must be used up within 4 hours, so as not to affect the effect.

4. Can not be mixed with other brands of paint for construction and use, otherwise there may be adverse consequences or losses.

5. During construction, please do a good job of relevant labor protection. The skin contact paint can be washed with washing powder and water. If you feel unwell, please seek medical help.

6. The disposal of construction waste materials must comply with environmental protection requirements and do not discard them at will.

Eight, safety protection

The construction site should have good ventilation equipment, and operators should wear protective equipment such as glasses and gloves to avoid skin contact and inhalation of paint.