Polyester Polyol for Polyester Sponge
PU resin, also known as polyurethane resin, is widely used in the production of synthetic leather. Synthetic leather, also referred to as faux leather or artificial leather, is a man-made fabric that imitates the appearance and feel of genuine leather. PU resin is a key component in the manufacturing process of synthetic leather, as it provides the material with its durability, flexibility, and water resistance.
The process of producing synthetic leather involves coating a fabric substrate, such as polyester or nylon, with a layer of PU resin. This resin is typically applied in liquid form and then undergoes a curing process to solidify and bond with the fabric. The resulting material has a leather-like texture and appearance.
PU resin offers several advantages for synthetic leather production. It has excellent abrasion resistance, making the synthetic leather more durable and long-lasting. It also provides flexibility, allowing the material to be easily shaped and molded into different forms. Additionally, PU resin offers good water resistance, preventing the synthetic leather from absorbing moisture and becoming damaged.
Moreover, PU resin can be customized to achieve different finishes and textures, such as smooth, grainy, or embossed patterns, depending on the desired aesthetic. It can also be colored in various shades to mimic different types of leather. This versatility makes PU resin a popular choice for synthetic leather manufacturers.
Overall, PU resin plays a crucial role in the production of synthetic leather, providing the material with its desirable qualities of durability, flexibility, and water resistance.
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Check engine helium and helium by opening the cover of the oil port and slowly refueling. If helium is severe, it can be seen with the naked eye. If helium is not serious, you can use a blank sheet of paper about 5 cm away from the oil port, and then add oil. If helium and oyster sauce, there will be traces of oil on white paper, and the traces of oil will be severe. Check the exhaust color. The gas emitted by a normal gasoline engine during operation should be colorless. When the diesel engine is running with a load, the color of the exhaust gas is generally light gray, and when the load is slightly heavy, it may be dark gray. If the color of the exhaust gas is blue, it means that the engine oil enters the combustion chamber and the organic oil in the cylinder burns. If the oil surface is normal, it is a problem with the piston. The wear of the piston ring and the cylinder wall is too large. The clearance is too large or the air intake of the cylinder is not good, causing the oil to inhale into the combustion chamber. If the exhaust pipe is black smoke, the mixture is too rich and ignition occurs. Time out and other reasons.
Engine oil string gas inspection
The engine is called the heart of the car, especially the used car should pay more attention to checking the working condition of the engine.