Umahluko phakathi kweengxowa ze-PE kunye ne-PP

Izinto ezahlukeneyo, i-PE: i-polyethylene, i-PP: i-polypropylene

I-PP yiplastiki yepolypropylene eyolulayo, eluhlobo lwe-thermoplastic.Iingxowa zePP eneneni ziiplastiki.Iimpawu zeengxowa zePP azinatyhefu kwaye azinancasa.Umphezulu webhegi yePP ugudile kwaye uyabonakala, kwaye isetyenziswa ngokubanzi ekupakishweni kwezinto zokuthambisa, ukutya, iithoyi, iimpahla, izinto zokubhala, i-elektroniki, iimveliso zehardware kunye namanye amashishini.Umbala webhegi yePP uyabonakala, umgangatho olungileyo, ukuqina okuhle, womelele, kwaye awunakukrweleka.Iindleko zokusetyenzwa kweengxowa ze-PP ziphantsi kakhulu, kwaye iimpawu zezi: kulula ukutshisa, ilangatye linyibilikile kwaye livuza, elingaphezulu liphuzi kwaye elisezantsi liluhlaza okwesibhakabhaka, emva kokushiya umlilo, kukho umsi omncinci kwaye ukuvutha kuyaqhubeka.

I-PE sisishunqulelo se-polyethylene, luhlobo lwe-resin ye-thermoplastic eyenziwe yi-polymerization ye-ethylene.I-Polyethylene ayinavumba, ayinatyhefu, ivakala njenge-wax, inokumelana nobushushu obuphantsi kakhulu (elona qondo lobushushu lisezantsi linokufikelela ku-70～-100℃), inozinzo olululo lweekhemikhali, kwaye inokumelana ne-asidi ezininzi kunye ne-alkalis (engaxhathisi kwiimpawu ze-oxidizing) I-Acid), i-insoluble kwi-solvents ngokubanzi kwiqondo lokushisa, ukufunxa kwamanzi aphantsi, iimpawu ezigqwesileyo zombane;kodwa i-polyethylene inomdla kakhulu kuxinzelelo lwendalo (iikhemikhali kunye neziphumo zoomatshini), kwaye inokumelana nokuguga kobushushu.Iipropati ze-polyethylene ziyahlukahluka kwiintlobo ukuya kwiintlobo, ngokukodwa kuxhomekeke kwisakhiwo se-molecular and density.Iindlela ezahlukeneyo zokuvelisa zingasetyenziselwa ukufumana iimveliso ezinobunzima obuhlukeneyo (0.91～0.96g/cm3).Ukongeza, isigqubuthelo seplastiki sezinto ze-PE sinokubizwa ngokuba yi-PE bag.Qaphela ukuba isigqubuthelo seplastiki esidibana ngqo nokutya kufuneka senziwe ngezinto ze-PE, ezikhuselekileyo kumzimba womntu.