Characteristics And Advantages Of Polymer Polyethylene Idler

In Dongguan rubber products, polymer-based vinyl idler rollers are important parts and wearing parts on the belt conveyor, and its quality will directly determine the life of the belt conveyor and the amount of energy consumed. Most of the belt conveyor rollers currently used in China are metal rollers. Compared with similar foreign product rollers, there are shortcomings such as short service life, large running resistance coefficient and heavy roller weight.


In addition, ordinary metal roller products are only suitable for general production occasions. In mines with high requirements for noise and static electricity, corrosive coking plants, chemical companies and other special industries, the service life is 6 months. For one month, it brought great constraints and dangers to the production of the conveyor. Safety accidents occurred frequently, causing large losses and high energy consumption. In view of the number of idlers and the huge energy consumption, the transformation of traditional metal idlers is imminent. Based on this, Henan Huabei Industrial Plastics Co., Ltd. has developed high molecular weight polyethylene idler rollers based on technology, structure, process equipment and other innovations on the basis of ordinary metal idler rollers based on the current state of technology at home and abroad.

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)". It is used as an engineering plastic because of its excellent physical properties. Henan Huabei Industrial Plastics Co., Ltd. mainly considers its excellent performance when selecting the material | Dongguan Rubber Roller:?

(1) Abrasion resistance. The wear resistance of high molecular weight polyethylene ranks first among plastics and outperforms some metals. Such high wear resistance makes it difficult to test the wear resistance by ordinary plastic wear test methods. Therefore, a mortar wear test device is used. The molecular weight is directly proportional, the better the abrasion resistance as the molecular weight increases;

(2) Impact resistance and impact energy absorption. It is difficult to break it by the usual impact test method. 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, its surface hardness is higher 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 sound attenuation effects;

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

(4) Chemical resistance. It has excellent chemical resistance. In addition to strong oxidizing acids, it can resist a variety of 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 ° C and 80 ° C for 30 days without any abnormal appearance, and other physical properties are almost unchanged;

(5) Not sticky. High-molecular-weight polyethylene has very weak surface adsorption, and its anti-adhesion ability is second only to PTEE, which is not sticky in plastics, 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), hygienic non-toxicity, and water repellency (the roller is not easy to absorb and deform). Solid rubber rollers.

Disadvantages 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 advantages of high molecular weight polyethylene idler?

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

(2) Because the high molecular weight polyethylene idler has surface non-adhesion, rust, and self-lubrication, it has better protection for the conveyor. Even when the idler is damaged and does not rotate, it will not damage the conveyor. Belt, not easy to wear conveyor belt, the service life of conveyor belt and roller can also be extended more than double.

(3) High molecular weight polyethylene has good self-lubricity and non-adhesion, so it will not stick and accumulate materials on the surface of the roller, which can improve the smooth running of the main machine and reduce the material's jitter and slide. And it can obviously reduce the noise of the whole machine, which can eliminate or reduce various accident hazards and improve safety performance.

(4) Long service life, low operating cost and significant economic benefits. The abrasion resistance of high molecular weight polyethylene is 7 times that of steel and 3 times that of nylon, which is better than all engineering plastics, and UHMW-PE rollers have good impact resistance and light weight rollers (generally only the same size steel rollers) The weight of the roller is 1/3 ～ 1/2), which is easy to install and replace, which reduces labor intensity and maintenance amount, and can save about 16% of power consumption | Dongguan rubber roller.