We are all familiar with UHMWPE. In recent years, with the widespread use of UHMWPE products, more and more products have been well received in the market. UHMWPE bars are also ultra high molecular weight poly One of the products of ethylene is a thermoplastic material commonly used in the engineering industry. Ultra-high molecular weight polyethylene rods can replace stainless steel, carbon steel and other materials, suitable for aerospace, textile, transportation and other industries. Today we will come together to understand ultra-high molecular weight polyethylene rods.
Everything has advantages and disadvantages. Let's take a closer look at the two sides of the UHMWPE bar.
The first advantage is that the ultra-high molecular weight polyethylene bar has excellent wear resistance, good low temperature impact resistance, self-lubricity, water resistance, chemical resistance, heat resistance superior to general PE, ultra high molecular weight polyethylene. The mechanical properties of bars are higher than those of ordinary high density polyethylene. It has outstanding impact resistance, stress crack resistance, high temperature creep resistance, low friction coefficient, self-lubricating property, excellent chemical resistance, noise damping, and nuclear radiation resistance.
Secondly, the disadvantage is that the ultra-high molecular weight polyethylene bar has low heat resistance (heat distortion temperature), poor formability, and the outer surface hardness, rigidity and creep resistance are not as good as general engineering plastics, and the expansion coefficient is too large. In addition, ultra-high molecular weight polyethylene rods have poor fluidity, high viscosity in molten state, and rubbery high-viscosity elastomers. They can only be formed by pressing and sintering methods in the early stage. Currently, extrusion, injection molding and blow molding methods can also be used. machining.