In everyday life, we will often encounter plastic products. Plastic is widely used in many fields and today is quite diverse. PU plastic was also born and selected by many people. Join us to learn more about PU plastic!
1. What is PU resin?
PU resin is a compound made from polyurethane resin with high durability and properties like rubber, so it is also known as a synthetic rubber. PU resin is modified from the main pre-polymer material, and is used in many fields.
PU resin has a long history but has only been used in our country for a short time recently. The molecular structure of PU resin is composed of hard and soft segments. The hard segments are formed from the diisocyanate component. The soft segments are formed from the polyol component.
The reason this material is so strong is because the internal molecular structure is quite tight. They have not only hard segments, but also soft segments. These components are structured in the form of the main circuit without branching and closely linked. That is why this material is so durable.
2. The outstanding properties of PU material
Understanding what the properties of PU are, each person will use it properly for the best effect. In addition, when there is a need to use, you will easily find the product that ensures the quality as you like.
Good wear resistance: One of the outstanding features of PU that users can easily see is its good abrasion resistance. This is higher than that of other materials such as metals and rubber. Therefore, it is often used to coat the surface of other materials. This is considered as a great protective layer.
Free from oil, grease, fat and organic solvents: If you have ever touched the surface of this material, you will definitely feel the smooth surface of PU. As such, oils, grease or dirt are difficult to stick to.
Excellent resistance to pressure: Thanks to this property PU is used to make all kinds of wheels and shock resistant devices.
High elasticity: This material also possesses ideal elasticity. It is quite difficult to tear when they are made into thin sheets.
Not much affected by weather changes: The temperature change also does not affect this material too much.
Good electrical insulation. Therefore, PU is used as an insulating coating.
Good impact resistance and elasticity.
3. Classification of PU plastic
PU resin is divided into 3 main categories as follows:
- Thermoplastic PU resin: Machined on a conventional plastic machine, when heated above about 120 degrees C to 150 degrees C, it will be soft and really machinable.
- Molded PU resin: These are prepolymer with active isocyanate groups attached at the end of the circuit. During the heating process, before physical chemical connections are broken, the circuit will often break. That is why this material cannot be reused when the elongation of the substance circuit ends.
- Cross-linked PU resin: These are really chemical connections that are formed and operate in three spatial dimensions. The main feature is that for the molded PU resin, the actual chemical structure consists of two main regions, the hard zone and the soft zone.
4. What is the application of PU plastic?
PU resin is resistant to chemicals and solvents, so it is often used to cover the rolls used in printing, steel, textile, paper, ...
With good mechanical properties, PU resin is also used to make the sealing of dynamic utilities.
In the oil and gas industry, PU raw materials are utilized for pipe cleaning, pipe lining, bend restriction details, bending hardware implementation details, lifting clamps and guides.
In the mining industry, PU plastic is also used for flooring, lining pipes, conveyors, axles and wheels, ...
Not only that, PU plastic is also used to make molds of concrete, plastic, wax, especially products that require delicate details, ...
Because of the above properties and wide applications, PU resins are a potential substitute for rubber in a number of softwares that help distributors maintain the productivity and longevity of machines. hook.
Hope the above sharing will help you understand more about PU plastic. This material is becoming more and more popular, so please refer to the best application for yourself!
