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What are the main application fields of Intumescent Coatings APP660?
Intumescent Coating APP660 is caused by the progress of science and technology in this world, and is dedicated to the field of fire protection. Its physical properties are peculiar, and in case of fire, it expands to form a carbonized heat insulation layer to prevent the rapid spread of fire. It is highly respected in the petroleum, chemical, construction, aerospace, and electric power industries.
All high-rise buildings and buildings, or residential or commercial buildings, need to take fire protection measures. Applying APP660, the steel structure will not be unstable at high temperature, and the structure of the sheltered building is complete. It is scattered on the key forces of beams, trusses, and floor slabs. When it encounters flames, it will melt thick carbon, refuse heat disturbance, and win valuable rescue opportunities. Another example is petrochemical storage tanks, oil and gas pipelines, refinery reaction towers and other dangerous projects. Its metal shell is easily deformed in case of fire, and the coke oven will be broken. If APP660 is applied, although the fire is blazing, the temperature of the inner wall will rise slowly, and the equipment will be comprehensive, which will effectively curb the disaster of deflagration.
And traffic masterpieces, such as subway tunnels, airport terminals, and high-speed rail stations, are all places where people gather and lurk hidden dangers. Manual coating of this melt layer not only blocks the fire, but also prevents the spread of toxic smoke. It is worthy of the shield of public safety. See also the cabinets of aerospace electronics and electric power communication, with intricate lines, the danger of fire is particularly severe. Although they are all tightly sealed and protected by APP660, the flame will not invade the device, protect the chip data, and ensure the continuous use of energy and communication.
In summary, Intumescent Coating APP660 is all-inclusive and versatile. It can be used for armor alone or in combination to enhance its performance. Its energy saving and emission reduction, green and environmentally friendly, are used in modern industrial and civil buildings, which can be called a good material and promote social peace and economy for a long time. It is used in steel structures, oil storage, subway tunnels, and power facilities, all of which are suitable. This is the main application field of APP660.
How to choose the thickness of Intumescent Coating APP660?
On the Thickness Selection of APP660 Expansion Coating
Expansion coating APP660 is a masterpiece of modern fire protection technology. Its protection responsibility is significant and subtle, but the thickness is directly related to the protection grade, component type, bearing condition and fire resistance limit. If you want to match the actual needs, you must refer to many factors, and cannot reach the same goal.
The choice of fire protection coating thickness, the first heavy steel structure type, such as beams, columns, trusses, floor slabs, and the location of the structure such as beam-column handover and the four corners of the wall, need to be carefully identified. Secondly, relying on the fire resistance judgment standard, the state-owned specification clearly states that the fire resistance limit is divided into one hour, two hours, and three hours, and the thickness of the coating is increased to ensure that the components are heated slowly in the fire and the core structure does not collapse. The high-rise buildings, general merchandise malls, public clubs, and regulations are many different, all of which are measured by fire hazards and personnel density.
APP660 has excellent performance, but the thickness needs to be adapted to local conditions, and cannot be generalized. Common fire resistance limit standards for one hour, steel beams should be coated with 4 to 6 mm. If it reaches two hours, the constant need to be thickened to 8 to 13 mm. If three hours of protection, the thickness or more than 16 mm. This data not only meets the specifications, but also can fluctuate with the cross-sectional factors of the components. If the section is thick and the expansion ratio is large, the coating can be slightly reduced, and vice versa, it should be moderately thickened.
The implementation of the process should not be ignored. The putty is uniform, the substrate is clean, and it is coated in different layers. The thickness of each pass should not be increased sharply. It can be reapplied after the previous one is dry. Otherwise, it may cause bubbling to fall off and lose its protective intention. In addition, the ambient temperature and humidity must be matched with the construction process. When it is rainy and humid, the operation should be suspended, and the storage should be cool and protected from the sun.
Therefore, the thickness of the APP660 expansion coating must be based on the type of structure, safety requirements, and fire resistance limit. According to the national specifications, the manufacturer's manual and engineer's judgment shall prevail. Only by adapting to local conditions can we improve its safety and If you don't think about it, you may lose it and give up all your previous efforts.
What is the fire performance rating of the Intumescent Coating APP660?
APP660 is a fireproof coating called Intumescent Coating in this world. It has excellent craftsmanship and exquisite material. When heated by fire, it will bubble up and expand several times to form a solid carbonized layer. This layer is impervious to flames and isolates high temperatures. It can effectively delay the temperature rise of the substrate and protect the structure from instant collapse.
The ancients said: "Be prepared for danger in times of peace, and be prepared when you think about it." How can you be careless when building fire protection is tied? APP660 is coated on the surface of steel structures. In case of fire, it rapidly foams and expands in a short time. The original thickness is several millimeters, and it can reach several centimeters thick after intense reaction. Its carbonized shell is sealed and insulated, flame retardant and coke resistant, which not only protects the inside, but also prevents the spread of fire. If according to the national standard "GB14907-2018 Fireproof Coatings for Steel Structures", APP660 can reach the first level of fire protection limit, that is, the fire resistance can last up to three hours. If the steel structure is coated with this, the fire will be hot, even if the flame is thousands of degrees, there will be no intrusion gap. Within three hours, the internal temperature does not exceed the standard limit, and the integrity of the steel frame is maintained, so that the safety of the building can be temporarily safe.
However, it is suitable for the field, not only for buildings, but also for bridges, tunnels, and storage plants. It can be used in all kinds of advanced projects. In addition to lasting fire resistance, APP660 also has the convenience of good adhesion to a variety of substrates, moisture resistance and durability, and does not peel or crack. It is easy and agile to operate, saves effort in construction, and is unique in the process and performance. If it is evaluated by British and American international standards, it can also reach the first-class or Class A level in the fire resistance test listed in BS476 or UL263.
All in all, APP660 fire retardant coating can protect the key points and delay the spread of fire. At a critical moment, it can escort safety, which is the top grade of Baigong. If you ask about its fire performance, it can rank among the top of similar coatings, reaching the fire limit of three hours, which is enough to make a turnaround in times of crisis. When it is a gentleman who lives in buildings, builds bridges, and camps, it is really wise to choose this as a barrier.
What are the requirements for the construction method of Intumescent Coating APP660?
Intumescent Coating APP660 is also used for special coatings for fire protection of steel structures. In order to maximize its function, all construction methods must follow the rules and not be lax. Before coating, the surface of the steel to be coated must be carefully inspected to ensure that it is clean and free of rust, grease and dust. Often sandblasted or sanded to Sa2.5 or St3 standards, the surface layer can be attached. If there is welding slag, burrs, oil stains, it must be completely removed, and the process should not be simplified.
When applying, it should be determined according to the ambient temperature and humidity limits set out in the product technical manual. The temperature should not be lower than 5 degrees Celsius, and the humidity should not be higher than 85%. If there is rain, snow, thick fog, strong wind, or condensation of water vapor on the surface of the steel, the operation should be suspended. After the paint is opened, stir evenly, especially with special machinery, stir slowly to prevent precipitation. Harmonize the solvent, must not exceed the recommended ratio, to prevent affecting the performance of the coating film.
Coating method, often spray, roll coating, brush coating three appropriate. Large areas should be sprayed airless to make the coating uniform; fine interface, can be small brush or roll coating reinforcement. For each coating, the thickness should not exceed the regulations, and the drying time between layers should be sufficient, otherwise it will affect the subsequent adhesion. The total thickness of the coating varies according to the fire resistance limit, and it should be applied gradually, not overnight. During the application period, it is necessary to avoid direct sunlight and strong wind to avoid excessive water transpiration, cracking film or bulging.
After the coating is completed, it must wait for drying and curing, and it must not be pressed, hit or touch water during this period. If the topcoat is applied, it is also necessary to wait for the fireproof layer to dry thoroughly. Store the paint in a cool place, keep it away from the fire source, prevent moisture and dampness, and avoid sun exposure. After the tool is used, wash it with a special solvent as soon as possible.
In summary, the construction of APP660 needs to strictly abide by the methods of rust removal, cleansing, environment, mixing, thick coating in separate channels, protection and maintenance to ensure its fireproof effect. The years are long, and it depends on the rules and circles.
What are the shelf life and storage conditions of Intumescent Coating APP660?
APP660 intumescent coating is the top grade of fire protection coating. Its properties are stable, but due to different raw materials, climate and storage methods, it is advisable to observe storage regulations carefully. The paint is ready, and it should be stored in a closed container. It must be protected from strong light exposure, away from fire sources, and strictly prohibited from moisture. It should be kept in a dry and ventilated place, and should not be mixed with chemicals such as water and acid and alkali. If it is stored in an indoor room of 5 to 35 degrees Celsius, if the temperature is too high, the paint may deteriorate easily and lose its protective effect; if the temperature is too low, it is easy to agglomerate and precipitate, which will damage the uniform application. When the container is opened, it must be airtight to prevent the solvent from dissipating, and it should not be connected with the air for a long time to avoid self-drying and change its properties.
The shelf life of APP660 expansion coatings depends on the manufacturer's production specifications and the actual storage environment. It is often sealed and stored in a suitable standard environment according to the original packaging. The shelf life is usually one to one and a half years. After this time, its performance should be re-checked. If there is any delamination, precipitation or abnormal odor, it is especially necessary to stop the verification to ensure the integrity of the building's fire protection. Once the paint is used up, it is best to use it up in a short period of time. If it is left for a long time, it may be lost in protection and affect the effectiveness of use.
The place where the paint is stored should be placed away from the ground to prevent moisture from invading. In case of rain and snow, especially to prevent leakage. The packaging barrel must be intact. Do not tip over or bump to prevent cracking and spilling. In addition, there should be fireproof and fire-extinguishing appliances in the warehouse for safety. Do not mix with toxic, harmful, flammable and explosive materials to ensure safety.
To sum up, the storage of APP660 expansion coatings should follow the above principles. If it can be adhered to, the shelf life can be safely limited and the performance can be preserved. Otherwise, negligence may cause the paint to deteriorate, and the fire protection will be ineffective. If it is light, it will be reworked, and if it is heavy, it will cause disaster. It is advisable to be cautious.