Q: Is installing PU sandwich panel Efficient?
A: The efficiency that comes with using PU sandwich panels is high. Their quick installation not only saves time but also minimizes on-site disruptions, a crucial factor in the fast-paced construction industry.
Q: Do PU sandwich panel need Precision Fit for Optimal Performance?
A: During installation, the precise fit of PU sandwich panels is paramount. This attention to detail minimizes gaps, ensuring an airtight seal and enhancing overall performance, especially in temperature-controlled environments.
Q: What is the advantages of PU sandwich panel?
A: First of all, as a thermal insulation material, the outstanding performance of polyurethane is definitely reflected in its low thermal conductivity. If the thermal conductivity is considered alone, PU Sandwich Panels are currently the best thermal insulation materials. Second, PU Sandwich Panels have good flame retardancy and low combustion coefficient, which can effectively prevent the spread of fire in house fires, and their anti-combustion performance can reach B1 level. Third, this type of panel is also waterproof and corrosion-resistant when combined with other panels, and its service life is much longer than that of ordinary panels. Fourth, the panel is elegant and beautiful in shape, and it is very simple to install, which can greatly shorten your construction period. It is precisely because polyurethane panels have so many superior properties that this type of panel is currently widely used.
Q: What are Things to note when purchasing PU Sandwich Panels?
A: 1. Appearance: The appearance of PU Sandwich Panels is smooth and should not have obvious defects such as dents, bubbles, extrusion, scratches, cuts and honeycombs.
2. Thickness: The thickness of PU Sandwich Panels should meet the requirements of the selected standards.
3. Size: The size of PU Sandwich Panels should meet the requirements of design documents and construction drawings.
4. Hardness: When purchasing PU Sandwich Panels, you should pay attention to their hardness. The higher the hardness, the greater the strength, so it can enhance the quality and service life of the panels. 5. Density: Density is an important parameter of the quality of PU Sandwich Panels, which can be obtained through quality testing and other methods.
Q: What are the application scopes of PU Sandwich Panels?
A: The application scope of PU Sandwich Panels is very wide, mainly including the following aspects:
1. Wall insulation and roof insulation: As a building exterior wall insulation material, it can improve the building insulation performance and save energy; as a roof insulation material, it can avoid rainwater leakage and reduce high temperature energy consumption in summer.
2. Cold storage and refrigeration equipment insulation: The excellent thermal conductivity of PU Sandwich Panels makes it the preferred material for insulation and heat insulation of cold storage, refrigeration equipment, etc.
3. Sound insulation and vibration isolation: PU Sandwich Panels have good sound insulation and vibration isolation performance and are widely used in engineering, offices, computer rooms, sound isolation and other fields.
4. Fire room: The fire resistance performance of PU Sandwich Panels meets the B-level standard and is widely used in the walls, roofs and other parts of fire rooms.
Q: What are the 6 testing methods for PU Sandwich Panels?
A: 1. Measure the length, width and thickness.
2. Measure the surface flatness.
3. Take a small piece and step on it, then put it under the faucet and pour water on it, then squeeze it with your hands to see if you can squeeze out water.
4. Calculate the specific gravity. The density of 35-45KG/cubic has the best insulation effect. Note that before measuring the specific gravity, you should look at the cross-section of the PU Sandwich Panel and rub it with your hands to see if there are any particles falling off. If it is serious, this PU Sandwich Panel cannot be used.
5. Look at the color. It should foam evenly and be slightly yellowish in color; it can be pressed with fingers. If it is too hard, it is not foamed well and the insulation effect is not good.
6. Observe the flame retardancy, cut off the edge material and burn it, then let it leave the fire source to see if it can extinguish itself away from the fire. If it can extinguish itself after leaving the fire source, it can be used.
Q: Is the thicker the PU Sandwich Panel, the better?
A: Flame retardancy is very important: the core of the PU Sandwich Panel is made by foaming a combination of polyether and polymerized MDI (polyphenyl polymethylene polyisocyanate). The quality of the polyurethane core does not lie in its thickness, but in its flame retardant properties.
Q: How to improve the flame retardancy of PU Sandwich Panels?
A: There are usually three ways to improve the flame retardancy of PU Sandwich Panels: adding flame retardants (mainly phosphorus and halogen flame retardants); increasing the isocyanate index in the formula, that is, increasing the amount of black material (MDI); increasing the flame retardancy of the material through molecular structure modification technology. The addition of flame retardants can easily increase the smoke production and toxicity of polyurethane foam when it burns, and the flame retardant is easy to migrate and fail over time. Therefore, the improvement of the performance of polyurethane foam plastics is mainly achieved by adjusting the components of polyurethane rigid foam combined polyether. The performance of polyurethane rigid foam combined polyether will directly affect the process performance of polyurethane rigid foam production and the physical properties and usage characteristics of the final product. The foam thermal conductivity, density, strength, hardness, flame retardant properties, etc. can all change with the different formulas of polyurethane rigid foam combined polyether raw materials.
Q: What should be paid attention to when using PU Sandwich Panels?
A: 1. Fire prevention: PU Sandwich Panels are flammable to a certain extent, so you need to pay attention to fire prevention when using them. You can set up fire isolation belts and use fire retardant coatings for fire prevention. 2. Moisture-proof: PU Sandwich Panels are not water-resistant, so you need to pay attention to moisture-proof when using them. You can set up waterproof isolation layers and use waterproof coatings for waterproofing. 3. Anti-ultraviolet: PU Sandwich Panels are prone to aging in the sun, so you need to pay attention to anti-ultraviolet when using them. You can set up awnings and use UV protective coatings for protection. 4. Anti-freeze: PU Sandwich Panels are easy to age at low temperatures, so you need to pay attention to anti-freeze when using them. You can set up insulation layers and use anti-freeze coatings for protection. 5. Installation: The installation of PU Sandwich Panels requires personnel, otherwise quality problems are likely to occur. During installation, you need to pay attention to the flatness and tightness of the installation to avoid cracks and gaps. 6. Cleaning: Dust and dirt are easily accumulated on the surface of PU Sandwich Panels, so you need to pay attention to cleaning when using them. You can use a damp cloth or detergent to clean it, but be careful not to use detergents with strong acidity or alkalinity to avoid damaging the PU Sandwich Panel. 7. Service life: The service life of PU Sandwich Panels is generally 10-20 years, so you need to pay attention to regular inspection and maintenance during use, and replace damaged or aged PU Sandwich Panels in time.
Q: What is the standard size of PU Sandwich Panel?
A: PU Sandwich Panel (or PUF panel - Polyurethane foam panel) is a kind of sandwich panel with the core made of Polyurethane, which is placed between two metal sheets. PU Sandwich Panel is 50-200 mm thick. A sheet of PU Sandwich Panel normally has a width of 1000 - 1700 mm, and a length of 1200 - 6000 mm.
