Polyethylene yog ib qho yas, paub txog nws qhov sib piv siab, kev yooj yim thiab tshuaj lom neeg ruaj khov. Nws yog qhov zoo tagnrho rau kev siv lub siab thiab tsis siv cov kav dej. Cov kav dej HDPE feem ntau yog ua los ntawm polyethylene 100 resin, nrog qhov ntom ntawm 930-970kg / m3, uas yog kwv yees li 7 npaug ntawm cov hlau. Cov kav dej sib dua yog yooj yim rau kev thauj thiab nruab. Polyethylene tsis cuam tshuam los ntawm cov txheej txheem electrochemical corrosion, thiab nws yog ib qho ua rau cov kav dej raug ntsev, kua qaub thiab alkali. Qhov du nto ntawm lub raj polyethylene yuav tsis corroded, thiab kev sib txhuam yog tsawg, yog li cov yas raj tsis yooj yim cuam tshuam los ntawm kev loj hlob ntawm cov kab mob. Lub peev xwm los tiv thaiv kev puas tsuaj thiab ntws tsis tu ncua ua rau kev saib xyuas cov kav dej HDPE tsawg heev.Tam sim no tias cov kav dej HDPE tau raug txiav txim siab, kev lag luam tseem ceeb heev thaum cov kav dej polyethylene tau siv rau hauv kev txuag dej hauv cov ntawv thov. Piv nrog rau cov kav hlau hlau, qhov pom tseeb tshaj plaws ntawm cov kav dej polyethylene yog tias lawv tuaj yeem tiv thaiv kom tsis txhob tawm. Muaj ob hom kev xa dej hauv cov raj xa dej: sib koom ua ke, tawg tawg thiab perforation to, uas yooj yim los daws.
