Questions and answers

What is polyurethane?

Polyurethane is a unique synthetic polymer material. For the first time, Bayer Otto Georg Wilhelm and his co-workers received polyurethanes and established their industrial production in 1937. Industrial production of polyurethane foams based on polyesters was organized in Germany in 1944, and their analogues based on cheaper polyethers in the United States in 1957.


"Material with unlimited possibilities" consists mainly of two types of raw materials, isocyanate and polyol, which are obtained from crude oil. When mixing two liquid components ready for processing, which contain various auxiliaries (catalysts, foaming agents, stabilizers, etc.), a reactive mixture is formed. Depending on the formulation and the ratio of components, with the appropriate technology, the spectrum of properties of the resulting polyurethane can be adjusted - we can get hard, soft, integral, cellular (foamed) or monolithic. Polyurethanes can be viscous liquids or solid products - from highly elastic soft rubbers to rigid plastics and processed practically by all existing technological methods: extrusion, pressing, casting, pouring.


Thus, out of the four "giants" of the modern large-tonnage plastic industry - polyethylene, polyvinyl chloride, polystyrene and polyurethane - the latter is by far the most versatile material.

Is polyurethane an expensive material?

No, polyurethanes are not expensive materials. Having a huge number of positive characteristics, they are affordable. The price of polyurethanes should always be considered in relation to their performance characteristics and the amount of energy saved over the life of their service. In terms of cost, polyurethanes are quite competitive.

Bushings and silent blocks in the suspension. What function do they perform?

In the suspension, the bushings and silent blocks act as hinges and flexible joints between the parts. Do not think that the polyurethane parts take on the function of springs or shock absorbers.

Why are the basic parts of the car suspension rubber?

Without rubber parts, cars would be noisier and not comfortable, since rubber is the absorber of sounds and vibrations. Rubber is quite cheap and affordable, and also satisfies the warranty period set by the manufacturer.

What is polyurethane made of?

Polyurethane consists mainly of two types of raw materials: isocyanate and polyol, which are obtained from crude oil. The properties of polyurethanes vary very widely and depend on the nature and length of the sections of the chain between the urethane groups, the structure of the chains (linear or mesh), the molecular weight and the degree of crystallinity. Depending on the formulation and the ratio of components, with the appropriate technology, you can adjust the range of properties of the resulting polyurethane and get a hard, soft, integral, cellular (foamed) or monolithic polyurethane. Polyurethanes may be viscous liquids or may be solid substances in an amorphous or crystalline state. Their properties range from highly elastic soft rubbers (Shore hardness from 15 on a scale, A) to hard plastics (hardness on Shore 70 on a scale of D).

Why are polyurethanes used?

Polyurethane has found wide application in all spheres of industry due to a wide range of strength characteristics and mechanical properties. Modern polyurethane, unlike rubber and plastic, does not lose shape at high temperatures (up to +110 C), it is resistant to hydraulic fluids and oils, is not afraid of frost (up to -30 C) and is not exposed to microbes. Quality products made of polyurethane are not covered with mold, do not crack and do not crumble. The material has an abrasion resistance greater than that of steel.

What are the advantages of polyurethane parts?

The unique properties of polyurethane are:

  • High abrasion resistance, abrasion resistance protects against wear, thereby increasing the service life of products;
  • The large operating temperature range of polyurethane (from -60 ° C to 110 ° C) allows it to be used in any climatic conditions;
  • High moisture resistance and chemical resistance of polyurethane;
  • High elasticity and elasticity.
  • Resistant resistance of polyurethane for many cycles of deformation and flexing, without any disruption of integrity.

Is polyurethane safe?

Polyurethanes are safe. During the reaction between the diisocyanate and the polyol, an inert substance is formed. Studies have shown that the polyurethane in the finished form is absolutely safe and inert.

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