Siyazi polythene eminingi eneenkcwakeni kulesi sikhathi sonyaka. Bayenza imfano yokuthi zingena izinto ezikhethekayo njengemibhalo yezicopheni, uphawu wokugcina amacophu nemibhalo eziphambili, kunye nezitoyizana ezincedwa ngazo bantwana bahlala nabo. Ungayicabanga phambi kokuthi polythene ifanele yeyiphi indawo efanelekayo? Ukumele ungazange uzazi ukuthi polythene iyishintshwana elibekwe ngokuthi iphakame polyethylene, umthebhu omkhulu ophakamiswayo. Umthebhu lwakho ulandelayo kumahhwebhu, umoya omhlophe wenkabi kunye nokuthi, ngakho esikhundleni, kuzo kwezilimi ezimbili.
I-Polyethylene yilokhi olunye uhlanya lokumemezela amabili angamandla aqhelekileyo ezinamandla ezinamava zokuthi i-polymers. Amapolimari aqhunywe kwisezintsha ezininzi ezithetha ngokwesikhatsi. I-Polyethylene, ngokulandelana, ayiqhutywa nge-monomer ethylene. I-Ethylene yi-gas ethi asikho ubuluhlaza kunye nokungaphumeleleyo, okuyafuneka ngenkathelo yokubanzi kunye ne-petroleum. Leli gas liyindlela eliphakeme lomva wokuqala lokusebenzisa ukwenza amanani apho esebenza sengxenye saso sesikhathi sasemvume, lokhu kungaba kuhlu!
Kuyona ukuthi i-Polyethylene uhlalelwa: Iphroceshi Yinhlobo yasekupheleni akutshentiswe kusasiphambili kwezilwandle njengezinto ezikhulu ezinethathweni lomusho, ngokumbi le-gas enyange okanye ipetholeli. Zihlalelwa emuva kwesikhwama esincane esithiwa ngo-petrochemical plant. Lapho, amathuluzi aphantsi angenziwa ngokubonisa ethylene, njengoba sibhedlela phambi kokusebenza.
Ngemuva kokuthi i-ethylene ikhethe isikhwama esingezwe ngo-polymerization plant. I-ethylene iyahlanganiswa ngesikhwama lesine ngokubonisa umthakathi wokuqala wahlukene. Ukunquma kunikeza ukuthi amanani amancane amahluke amahluke, abhaluleka ngamadanda amakhulu. Lokhu ngu-polymer - lokhu ngu-polyethylene, izingxenye zeminye iminingi elizenzelwa ngalokho sifunda kulesi sikhathi. Ngemuva kokuthi i-polyethylene ihlalelwe, kufuneka kuhlaziywe & kutsutswi ngemikhefu ombili obekwayo amapeli. Amapeli amaningi akhetshe amanye amagcinisi ngemva kokuthi.
Kunezinye izinhlobo eziningi le polyethylene, ezinakwenzeka ngokusho ukusuka kwe density noma umsane wobunzima obumkhakha. Umlinganiso ophambili okuthuthukisa polyethylene kulandelayo kunye no low-density polyethylene (LDPE), high-density polyethylene (HDPE), kunye ne linear low-density polyethylene (LLDPE).
Polyethylene yebhophu ithintelekise kwezinto eziqondisiwe ngokuthi zisemva kwezilimi esikhulu, njengesugane kunye nokholwa. Baye abahlukele lokho lapho bavumelela ukubuyela amaxhobo. Ngakho ke, i-bio polyethylene iyabhidheka. Kufunekabuhlanganiswa ngoba uphinda ukusebenzisa ukuvamileyo kwamanye amaxhobo ethi ahlala emfazweni yakhe.
Siqhuba umhlanga nomncinyane ngenxa yamathebhu abamkhulu esikhishini saso sesiphakeme lapho siyithintela amanye amagama ethileyo. Ngokwesobizo, sibonisa ukuthi sifundziswa ukukhupha imikhovu yesibhedlela esikhize kakhulu okuyona usizo lokuhlola ukuthi sikhathaleka ngcono. Lolu hlobo lokusebenza kuhlonipha isihlathi lesiphakeme sokulandelana nokubhekisisa kwehlathi lethu. Ukusetshenziswa kwamathebhu akhawulezi apha ayiqinisekisa ukuba amanxoxo akhona amasusa ukuze kube ngcono apho asetshenziswa ngabantu futhi bayenze uphawu olungabafuthi lokulandelana nokusetha isidelo.
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