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Ultra High Molecular Weight Polyethylene Highway Guardrail Material And Manufacturing Method

Jul 01, 2019

The guardrail material is basically composed of ultra-high molecular weight polyethylene with a molecular weight of more than 6 million. The longitudinal tensile strength of the UHMWPE guardrail material is 180-480 MPa, and the longitudinal elongation at break is preferably 45-450%; the continuous production method of the guardrail material mainly includes: Pre-swelling treatment, dissolution and kneading in parallel co-rotating twin-screw extruder, extrusion molding, and tensile strengthening. Compared with the existing carbon steel guardrail, the guardrail material has longer deformation relaxation time and greater elastoplastic deformation area and deformation under the condition of absorbing the same impact energy, and the vehicle and The occupant's damage is greatly reduced and the safety is better.