What is polyurethane? Special application in automatic door industry

Công thức hóa học của vật liệu Polyurethane

As a country with hot and humid temperatures all year round, machines, tools, automatic doors and a variety of other fields are always in need of finding materials that are resistant to abrasion and good bearing. and less deformation before the effects of weather. Among them, Polyurethane is considered as one of the best solutions.

Do you know what is Polyurethane? How is it used in automatic doors? Anh Khoa will find out with you soon.  

What is polyurethane?

Polyurethane is also known as PU. In essence, this is a type of plastic that is immune to inorganic and organic chemicals. It is also called PU leather and is one of the most versatile materials available today. 

Công thức hóa học của vật liệu Polyurethane
Chemical formula of the material Polyurethane

Polyurethane properties and applications

Polyurethane has the following basic properties: 

  • Very good abrasion resistance, even better than many other materials such as metal or rubber, plastic.
  • Free of adhesion to greases, organic solvents and fats.
  • Able to withstand pressure very well. Better than ordinary rubbers.
  • Good compressive and tear resistance. It does not tear easily like many common rubbers.
  • Able to withstand the effects of weather, Polyurethane does not oxidize, does not deteriorate under the influence of rain, sun, ozone.
  • Perfect electrical insulation
  • Anti-impact, anti-stretch. 
Polyurethane ứng dụng rộng rãi trong nhiều ngành công nghiệp, sản xuất
Polyurethane is widely used in many industries, manufacturing

With such outstanding properties, at present, PU is a material that is widely applied in the manufacturing industries:

  • Wrapping shafts in the papermaking, dyeing, printing industries.
  • Making dynamic structures
  • Application in petroleum, pig making.
  • Make concrete molds.
  • Use in soundproofing.
  • As a coating material on the outside of surfaces to protect the material
  • Manufacture of truck wheels, shock plates and joints.
  • Making sheaths for electrical wires, cables…

Structure of polyurethane

Polyurethane is a material with an elastic molecular structure consisting of hard and soft segments. The hard segments are formed by diisocyanate components. Meanwhile, quilted segments are formed from Polyol. Thanks to the straight and unbranched main chain, and good cohesion, PU has very high elasticity. 

How was polyurethane discovered?

Polyurethane was discovered a long time ago. It first appeared in Wut and Hofmann's report on the reaction between isocyanate and a Hydroxy compound. However, it was not until 1937 that it was officially recognized and began to be available in commercial applications.

In the period 1937 - 1945 (World War 2), raw materials for production were in serious shortage. At this time, Polyurethane was researched and manufactured on a large scale for application in the paint, foam and fiber industries. To this day, Polyurethane has ranked 6th in total consumption of polymers in the global market. This has shown how diverse and rich the application of this material is. 

Application of Polyurethane in automatic doors

From the outstanding technical characteristics, Polyurethane has been widely applied in the automatic door industry. This material is used in the manufacture of rollers. As a result, automatic doors can operate to minimize noise while ensuring aesthetics. Not only that, the life of the product is extremely long.

Most of the automatic door products apply Polyurethane: Automatic revolving doors, automatic sliding doors, automatic opening doors. The appearance of Polyurethane helps the product get the best operating efficiency. 

Polyurethane được ứng dụng rộng rãi trong cửa tự động
Polyurethane is widely used in automatic doors

Polyurethane application in automatic doors is a new invention, bringing optimal quality to automatic doors on the market today. For more advice on automatic door solutions for your project, please contact Anh Khoa Automatic Door at hotline 090 458 7544.

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