What is the difference between PU wheel and rubber wheel ?

The difference between PU wheel and rubber wheel :

1.PU wheel

Pu material can be applied to the fabric of shoes or the parts bearing the weight, such as high-grade straight row wheel, pu pulley for skate board wheel, Pu pad, case wheel, shopping cart wheel and other purpose wheels. In the sports products, such as drift board, vigor board, skate, twist car and other sports and leisure products favored by teenagers, the wheels are generally Pu wheels. Why? Because these products need to bear personal weight, let me take drift board as an example. If a drift board wants to bear a force of 100kg, its overall requirement is not only that the large board can bear, but also that an important role player is the wheel. Don't underestimate this wheel, players and friends. It's very useful. Pu wheels are significantly more flexible, and the more flexible the wheels are, the more suitable they are for all kinds of technical actions, such as rotation, acceleration, retrograde, jumping, etc .

2. Rubber solid wheel

Rubber solid wheels are made of rubber. Rubber is a kind of high elastic polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under a small external force. After removing the external force, it can return to its original state. Rubber is a completely amorphous polymer. Its glass transition temperature (TG) is low, and its molecular weight is often large, more than several hundred thousand.

The general rule is that when the particle size is the same, the carbon black with high structure has a large reinforcing effect on the amorphous rubber, and generally has a high tensile strength and tear strength. Rubber structure is also the most important factor to affect the conductivity. The chain branch structure is easy to form an interlaced conductive path in rubber, which will improve the conductivity.

Isoprene rubber, like natural rubber, has good elasticity, wear resistance, heat resistance and chemical stability. The strength of raw isoprene rubber (before processing) is significantly lower than that of natural rubber, but its quality uniformity and processability are better than that of natural rubber. Isoprene rubber can replace natural rubber to make truck tire and off-road tire, and can also be used to produce various rubber products.