Characteristics And Advantages Of Polymer Polyethylene Roller

The polymer-based vinyl idler is an important part and wearing part of the belt conveyor. Its quality will directly determine the service life and energy consumption of the belt conveyor. The belt conveyor rollers currently used in China are mostly metal rollers. Compared with the rollers of similar products abroad, they have shortcomings such as short service life, large running resistance coefficient and heavy roller weight.


Moreover, ordinary metal roller products are only suitable for general production occasions. In mines with high requirements for noise and static electricity, special industries such as coking plants and chemical enterprises with strong corrosivity, the service life is 6 months, short One month, it brings great constraints and dangers to the production of conveyors. Safety accidents occur frequently, causing large losses and high energy consumption. In view of the huge number of rollers used and energy consumption, the transformation of traditional metal rollers is imminent. According to this, Henan Huabei Industrial Plastic Co., Ltd. has developed high molecular weight polyethylene rollers based on common metal rollers, through technology, structure, process equipment and other innovations, based on the domestic and foreign technical status.

1. High molecular weight polyethylene material Polyethylene with a molecular weight of more than 1.5 million is called "high molecular weight polyethylene (UHMW-PE)" and is used as an engineering plastic because of its excellent physical properties. Henan Huabei Industrial Plastic Co., Ltd. mainly considers the following excellent performance when selecting materials | Dongguan Rubber Roller:?

(1) Wear resistance. The wear resistance of high molecular weight polyethylene ranks first in plastics and is better than some metals. Such high wear resistance is difficult to test its wear resistance by the general plastic wear test method. Therefore, the mortar wear test device is used to The molecular weight is proportional to the wear resistance as the molecular weight increases;

(2) Impact resistance and impact energy absorption. It is difficult to break and break with the usual impact test method, and its impact strength increases with the increase of molecular weight, reaches the limit value when the molecular weight is 1.5 million, and then gradually decreases as the molecular weight continues to increase. In addition, it has higher surface hardness after repeated impacts; it has excellent impact energy absorption, and the impact energy absorption value is higher in all plastics, so the noise damping is very good, and it has excellent noise reduction effect;

(3) Self-lubricating. High molecular weight polyethylene has a very low coefficient of friction (0.05 to 0.11), so it has excellent self-lubricating properties. It can be seen that the coefficient of friction is inferior to polytetrafluoroethylene (PTEE), which is better than self-lubricating, so it is known as the tribology field. Friction material with very good cost performance | Dongguan printing roller;

(4) Chemical resistance. It has excellent chemical resistance. In addition to strong oxidizing acid liquid, it can withstand various corrosive media (such as acids, alkalis, salts) and media (except solvents) at a certain temperature and depth range. It is immersed in 80 solvents at 20 ℃ and 80 ℃ for 30 days without any abnormal appearance, and other physical properties are almost unchanged;

(5) Not sticky. The surface of high molecular weight polyethylene has very weak adsorption capacity, and its anti-adhesion ability is second only to the non-sticky PTEE in plastic, so the surface of the product is not easy to adhere to other materials. In addition, high molecular weight polyethylene also has the characteristics of low temperature resistance (making the roller suitable for a wide temperature range), sanitation, non-toxicity, and water repellency (the roller is not easy to absorb water and deform). Solid rubber roller.

Shortcomings of high molecular weight polyethylene: Compared with metals and other engineering plastics, heat resistance and hardness are lower, but it can be improved by "filling" and "crosslinking".

2. The superiority of high molecular weight polyethylene roller?

(1) As the running resistance coefficient and the moment of inertia are greatly reduced, the idler operation is more flexible and stable. High molecular weight polyethylene has good impact energy absorption and damping, which can effectively reduce the running noise and can realize the belt conveyor Long-distance, large-capacity, high-speed operation. However, considering the defect of low strength of polyethylene, careful calculation and testing are required.

(2) Since the high molecular weight polyethylene roller has surface non-stickiness, rust, and self-lubricity, it has better protection for transportation, even if the roller is damaged and does not rotate, it will not damage the transportation The belt is not easy to wear the conveyor belt, and the service life of the conveyor belt and the roller can also be extended by more than 1 times.

(3) High molecular weight polyethylene has good self-lubricating and non-adhesive properties, so there will be no adhesion and accumulation of materials on the surface of the idler, which can improve the smooth operation of the host and reduce the jitter and decline of materials. And significantly reduce the noise of the whole machine, which can eliminate or reduce the hidden dangers of various accidents and improve safety performance.

(4) Long service life, low operating costs, and significant economic benefits. The wear resistance of high molecular weight polyethylene is 7 times that of steel and 3 times that of nylon, better than all engineering plastics, and UHMW-PE rollers have good impact resistance and light weight (generally only steel rollers of the same specification) Roller weight 1/3 ～ 1/2), installation and replacement is very convenient, reducing labor intensity and maintenance, and can save about 16% power consumption | Dongguan rubber roller.