Crosslinking method of high density polyethylene using the plasma reaction and heat storage material prepared using the same

摘要

PURPOSE: A method for cross-linking a high density polyethylene by using the plasma reaction and a latent heat regenerating material prepared by using the method are provided, to obtain a high density polyethylene with a low surface charge which stores heat by the form of slurry. CONSTITUTION: The method comprises the steps of charging a high density polyethylene with flowing a carrier gas into a plasma reactor; fluidizing the high density polyethylene slurry by stirring it with a Teflon-coated magnetic bar to cross-link the high density polyethylene; and introducing fluorine from Teflon to modify the surface. Preferably the cross-linking process is carried out in the condition of an RF power of 30-300 W, a pressure of 0-350 mTorr, a treatment time of 30 sec to 120 min, and a rotation velocity of a magnetic bar of 50-1,000 rpm. The carrier gas is preferably argon. The plasma electron energy of a reactor is 0.1-10 and the electron density is 10¬9-10¬12 cm¬-3.