PE cov kav dej yog cov kav dej uas siv tau ntau. Vim nws txoj kev ua tau zoo thiab kev ua haujlwm siab, nws tau dhau los ua cov khoom siv yeeb nkab rau niaj hnub dej thiab cov dej ntws. Txawm li cas los xij, qee zaum pom tias qhov chaw ntawm PE cov kav dej yog qhov ntxhib thiab tsis ua raws li tus qauv tsim nyog. Muaj ntau qhov laj thawj rau qhov ntxhib ntawm cov kav dej. Yog li ntawd, tsuas yog thaum lub hauv paus ua kom meej meej tuaj yeem muab cov kev daws teeb meem los ua kom cov kav dej PE muaj qhov zoo. Yog tias PE cov yeeb nkab dej yog tsim los ntawm cov khoom siv tshiab, qhov laj thawj ntawm qhov ntxhib ntawm cov yeeb nkab los ntawm cov dej noo hauv cov khoom siv raw tuaj yeem raug tshem tawm; Yog hais tias PE cov yeeb nkab dej roughness tsuas yog tshwm nyob rau hauv ib txheej nyias ntawm qhov chaw, nws yuav raug tsim nyob rau hauv cov pwm seem. Qhov saum npoo roughness ntawm PE dej muab cov yeeb nkab yog tshwm sim los ntawm kev sib txhuam ntawm cov yaj thiab cov pwm saum npoo, thiab tsis muaj dab tsi cuam tshuam nrog qhov roughness ntawm pwm. Rau high-viscosity polyethylene, vim muaj zog entanglement ntawm molecular chains, qhov saum npoo ntawm PE cov kav dej yog qhov ntxhib heev, thiab nws tsis yooj yim rau kev sib cais ntawm cov yaj thiab tsis tuaj yeem tsim lubrication zoo. Yog li, yog tias koj xav kom du, koj yuav tsum tau ntxiv lwm cov roj nplua nyeem.
