What is pu material, Chinese name polyurethane polyurethane. Since only simple modification of the formula is required, different physical properties such as density, elasticity, and rigidity can be obtained. At present, it has largely replaced glass fiber insulation materials, wood, and traditional rubber products. Polyurethane is also called microfiber leather and its quality is better than that of PVC (commonly known as xipi). Garment manufacturers use this kind of material to produce clothing, commonly known as imitation leather clothing. In addition, many good bags use imported PU leather. Here we give talk pu pu material and what are the characteristics of the material.
What is pu material?
PU decorative leather is made by treating the leather of the second and third layers of natural leather and residual leather with a special film laminating and laminating technique. The surface of the leather is covered with a polyurethane PU surface layer, which makes the leather surface appear in various colors. , A variety of patterns, and without losing the advantages of leather breathable, folding, in appearance and waterproof properties have their own unique.
PU leather and artificial leather are different
Artificial leather is the earliest invention for the replacement of leather fabrics, it is made of PVC plus plasticizers and other additives calender compounded on the cloth, the advantage is cheap, rich colors, patterns are numerous, the disadvantage is easy to harden, Become brittle. PU synthetic leather is used to replace PVC artificial leather, and its price is higher than PVC artificial leather. From the chemical structure, it is closer to the leather fabric, it does not use plasticizers to achieve the soft nature, so he will not become hard, brittle, while having the advantages of rich colors and patterns, the price is cheaper than the leather fabric, So it is welcomed by consumers.
Cortex fabric and PVC artificial leather, PU synthetic leather to distinguish between two methods: First, the difference between the back of the fabric, the method is PVC artificial leather, PU synthetic leather is generally the back of the base (or knitted fabric base) can be seen with the eyes The second is to use the method of melting and melting to distinguish the method is to take a small piece of fabric on the fire, the leather fabric will not melt, and PVC artificial leather, PU synthetic leather will melt.
The difference between PVC artificial leather and PU synthetic leather can be distinguished by the method of soaking in gasoline. The method is to use a small piece of fabric, put it in gasoline for half an hour, and then remove it. If it is PVC artificial leather, it will become hard and brittle. If it is PU synthetic leather will not become hard and brittle.
Pu material characteristics
PU, namely polyurethane, is abbreviated as polyurethane. It is a macromolecular compound containing a -NHCOO- unit in the molecular structure. This unit is formed by a mixed reaction of an isocyanate group and a hydroxyl group. The characteristics of pu material are obvious, which is also the key to achieving a broad market. In the home improvement industry, it is generally used in the production of living room sofas and other skins.
PU is also called recycled leather and recycled leather. It is characterized by light weight, abrasion resistance, non-slip, cold resistance and chemical resistance, but it is expensive, easy to tear, poor in mechanical strength, and poor in tear strength. PU color less. The main color is black or brown. Soft texture, suitable for making casual bags or furniture skins, the price is not high, easy to decolorize.
PU fabrics are simulated leather fabrics made of synthetic materials with a genuine leather texture that are extremely durable and inexpensive. People often say that the PU leather is a leather material, such as PVC leather, Italian leather paper, recycled leather and so on. The manufacturing process is slightly more complicated, because PU's bottom fabric tensile strength is good, in addition to coating on the bottom On the cloth, it is also possible to include the base cloth so that the outside of the base cloth does not exist. The characteristics of pu materials can be mainly reflected in the following points:
1, good physical properties, resistance to bending, good flexibility, high tensile strength, breathable. The pattern of the PU fabric is a kind of pattern paper which is first hot-pressed on the surface of the semi-finished leather. After waiting for cooling, the paper leather is separated and the surface treatment is performed.
2, high air permeability, temperature penetration rate can reach 8000-14000g/24h/cm2, high peel strength, high water pressure resistance, waterproof breathable clothing fabrics and the bottom layer of the ideal material.
3, high prices, some special requirements of the price of PU fabric than the PVC fabric to be 2-3 times higher. The pattern paper required for general PU fabrics can only be scrapped with 4-5 times.
4. The use cycle of the pattern roll is long, so the cost of PU leather is higher than that of PVC leather.
Summary: The relevant information about the pu material and the characteristics of the pu material is introduced here. I hope this article will be helpful to everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
Leather sofa cushion sofa leather repair PVC wallpaper sofa leather
Sensor Contain many Kinds, Such As Pressure Switch, Revolution Sensor, Fuel Sensor, temperature Sensor and so on.
Sensors are devices that sense physical phenomena or changes in the physical state of an object, convert them into signals or data, and Export them. Sensors can deal with various phenomena and objects, including light, sound, temperature, pressure and electricity. Magnetism, distance, velocity, acceleration, angular velocity and so on.
Sensor Switch,Light Sensor Switch,Occupancy Sensor Switch,Outdoor Light Sensor Switch
Jining Tongderui Construction Machinery Co., Ltd. , https://www.tdr-excavatorparts.com