| 摘要 |
PURPOSE:To obtain a high density polyethylene sheet having high elastic modulus and high tensile strength by a method wherein a polyethylene sheet is heated and melted, then, stretched at 150 deg.C or below so that the percent of stretch is increased by ten times or more. CONSTITUTION:In preparing a high elastic modulus sheet of ultra-high molecular weight polyethylene having 1.5 millions or more of viscosity average molecular weight, said polyethylene sheet is melted, then, stretched at 150 deg.C or below so that the percent of stretch is increased by ten times or more. In this method, it is possible to obtain a high density polyethylene sheet having excellent high elastic modulus and high tensile strength as well as various characteristics given to common ultra-high molecular weight polyethylene such as high impact resistance, excellent wear resistance, chemical resistance, self-lubricating properties and low water-absorbing properties. |
