HDPE (high-density polyethylene) Rail Pad has shown significant advantages in many aspects in the railway fastener system due to its unique material properties, and has become a powerful assistant to ensure the safe and stable operation of the railway.
High strength and high rigidity are one of the core advantages of HDPE Rail Pad. It can easily cope with the huge pressure brought by heavy-loaded trains. Under the condition of long-term train crushing, it can still maintain its own structural stability and is not easy to deform and damage. This characteristic can effectively disperse the train load, avoid the rails and sleepers from cracking and wearing due to excessive local force, and reduce the risk of fastener loosening, ensuring that the track structure is always in a stable state, and providing solid support for the reliable operation of heavy-load railways and freight lines.
HDPE Rail Pad also has excellent wear resistance. During the operation of the railway, there will be continuous friction between the rails and the pads, and the HDPE pads can greatly slow down their own wear rate due to their stable molecular structure. Compared with pads made of other materials, HDPE Rail Pad has a longer service life and a lower replacement frequency, which not only reduces the workload of maintenance personnel, but also greatly reduces the maintenance cost of railway operations. It is particularly suitable for railway sections with harsh environments and a lot of dust and gravel.
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥19 | 19 |
| Elongation | % | >80 | 150 |
| Melting Point | ℃ | 170-190 | 190 |
| Insulation Resistance | Ω | ≥1×1010 | 3.5 ×1010 |
| Hardness | A | ≥98 | 98(A) |
Chemical stability and weather resistance are also outstanding advantages of HDPE Rail Pad. It has strong resistance to various chemical substances, whether it is common oil pollution, acid and alkali rainwater along the railway, or industrial emissions. Pollutants are difficult to erode its performance. In addition, HDPE Rail Pad is not afraid of extreme climatic conditions. It will not soften and deform at high temperatures, nor will it crack in severe cold. It can always maintain stable physical properties, ensuring that the fastener system works normally in various complex environments and escorting the safe operation of trains.
