One of the most remarkable properties of ultra-high molecular weight polyethylene sheets is their extremely high wear resistance, which is highly valuable in many engineering applications. Among all plastics currently, their wear resistance is the best, even many metal materials (such as carbon steel, stainless steel, bronze, etc.) have less regular wear resistance than it. As the molecular weight of polyethylene increases, this material becomes more wear-resistant. The impact strength of ultra-high molecular weight polyethylene sheets is related to their molecular weight. When the molecular weight is less than 2 million, the impact strength increases with the increase of molecular weight, reaching a peak around 2 million. After this peak, the impact strength decreases as the molecular weight increases. This is because the molecular chain often hinders its photocrystallization, resulting in the presence of large amorphous regions in the macromolecules that can absorb significant impact energy.
High molecular weight polyethylene sheets not only retain the high impact strength, low friction coefficient, and excellent self-lubricating performance of ultra-high molecular weight polyethylene sheets, but also meet the different performance needs of customers. For example, flame-retardant polymer polyethylene board, the lining board has high ignition difficulty, can automatically extinguish within 3-10 seconds after being separated from the ignition source, and does not drip, has low smoke volume, and volatile gases are harmless to human health. After testing by the National Flame retardant Materials Research Laboratory, the product is recognized as a green and environmentally friendly material, with high promotion and use value. In addition, there are wear-resistant polymer polyethylene sheets, high-temperature resistant polymer polyethylene sheets, high-strength polymer polyethylene sheets, etc.
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