Polyurethane powder (TPU powder) grinding processing

Polyurethane powder, also known as TPU powder, is a high-performance material with strong, high elasticity, wear resistance and other characteristics, widely used in electronic products, automobiles, medical equipment and other fields. For the production and processing, TPU powder is a relatively difficult material, the production process requires the use of specific methods and equipment, the following brief introduction to the grinding process of polyurethane powder.

First of all, the choice of crushing equipment is very important. Due to the high elasticity and toughness of polyurethane powder, it is necessary to use a powerful grinder to grind. At present, the common grinding equipment on the market are granulator, granulator, crusher and so on. When selecting the equipment, it is necessary to select the appropriate crusher according to the different production processes and the particle size and shape of the powder.

Secondly, the pretreatment before crushing is also critical. Polyurethane powder generally has a certain water content in the preparation process, and the water needs to be evaporated by drying and other ways in order to improve the crushing efficiency. In addition, in order to ensure the uniform shape of the particles after grinding, it is also necessary to screen and grade the raw materials to evenly distribute the particle size.

Then, the precautions in the crushing process also need to be noted. When the mill is running, it is necessary to control the feed speed of the material and the speed of the mill to avoid the material being too fast or too slow, resulting in uneven particle size. In addition, due to the high strength and toughness of TPU powder, the machine is prone to blockage, and the grinding chamber and screen need to be cleaned in time when the crusher is running to avoid the reduction of processing efficiency.

In the end, the quality inspection after crushing is also essential. Through the detection of particle size, shape and other aspects of the crushed material, as well as the testing of physical and chemical properties, to determine whether the surface quality and physical properties of TPU powder meet the requirements for subsequent production and processing.

In short, the grinding processing of polyurethane powder needs to be comprehensively considered in the selection of equipment, pretreatment, operation process, etc., and high-quality TPU powder products can be obtained through scientific operation methods.