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What Is the Material of Polyurethane Casters? (Part 1)

What Is the Material of Polyurethane Casters? (Part 1)

Apr. 07, 2020

Polyurethane material is the abbreviation of polyurethane, it is a polymer material. Polyurethane is an emerging organic polymer material, known as the "five plastics". Because of its excellent performance, it is widely used in many fields of the civil economy. Product application areas involve light industry, chemical industry, electronics, textile, medical, construction, building materials, automotive, defense, aerospace, aviation, etc. A new type of polyurethane caster is also emerging in the caster industry. Let's take a look at it.

Pu Castor Wheels

Pu Castor Wheels

What is the material of polyurethane casters?

The elastic body of pu castor wheels has good performances such as abrasion resistance, chemical resistance, high strength, high elasticity, low pressure resistance, strong shock absorption, tear resistance, radiation resistance, high load bearing and shock absorption buffer. Polyurethane casters also have a wide range of hardness, ranging from Shore A10--100. There are already products on the market that exceed Shaw A100 and above. In addition, the polyurethane casters have excellent sound absorption characteristics, the wheels do not generate noise during the movement, and can achieve a silent effect. These characteristics of PU wheels are very suitable as caster materials.

The main advantages of industrial pu wheels: the adjustable range of performance.

Many physical and mechanical performance indicators can be flexibly changed within a certain range through the selection of raw materials and the adjustment of formulas.

So as to meet the special requirements of users on product performance. For example, hardness is often an important indicator for users. Polyurethane elastomer can be made into a soft printing rubber roller with a Shore A hardness of about 20, or a hard-rolled rubber roller with a Shore D hardness of 70 or more. This is difficult for general elastomer materials to meet the needs of different users. Polyurethane elastomer is a polymer material composed of many flexible segments and rigid segments. As the proportion of rigid segments increases and the density of sexual groups increases, the original strength and hardness of the elastomer will increase accordingly.2. Superior wear resistance.

Under the working conditions of water, oil and other wetting media, the wear resistance of polyurethane casters is often a few

Times to dozens of times. Although metal materials such as steel are very hard, they are not necessarily wear-resistant; others such as rubber rollers for rice milling rice mills, vibrating sieve plates for coal preparation, track and field racetracks for sports fields, and dynamics for crane forklifts Oil seals, elevator wheels, roller skate wheels, etc. are also used for polyurethane elastomers. It should be mentioned here that to increase the friction coefficient of medium and low hardness polyurethane elastic components and improve the wear resistance under load, a small amount of aluminum disulfide, graphite or silicone oil can be added to this type of polyurethane elastomer Lubricant.