Ino nchintu nzi chidumide loko chakupanga mulilo?
Ino nchintu nzi chidumide loko chakupanga mulilo?
Kupanga kupya ninzila iibelesyegwa kapati mukupanga zintu iibikkilizya kupya mapulasitiki kusikila mpoakonzya kuteteeta, mpawo kwaapanga kuba ziimo zimwi kubelesya zibulo. Akaambo kakubeleka kabotu, kutadula, akukonzya kuchincha, thermoforming ilabelesegwa kapati mumakwebo aali mbuli kupanga zintu, myootokala, zibelesyo zyamagesi, antoomwe abusilisi. Kusala zintu nchintu chipati loko mumulimo wakupanga zintu, nkaambo zintu zisiyene-siyene zili abube bwiindene-indene akubelesya. Eechi chibalo chiyoolanga-langa zintu zidumide kapati zyakupanga zintu zipya—Polystyrene (PS)—kulanga-langa bube bwazyo, mbozibelesyegwa, alimwi amboziyandika mumakwebo aandeene-andeene.
I. Bube bwa Polystyrene (PS)
Polystyrene nchintu chipangidwe abantu chilibonya mbuli chintu chiyumu chisalala naakuti chituba. Akaambo kakuubauba kwawo kuchita, bube buteteete, akuba aanguzu zyakupanga zintu zipya, PS yaba chimwi chazibelesyo zibelesyegwa kapati mukupanga zintu zipya. Polystyrene ilijisi zitondezyo zyiingi:
1. Muulo Muniini: Muulo wazyintu zitabelesyegwi zya polystyrene uli munsi, aboobo ube nzila mbotu yakupanga zintu zyiingi.
2. Kuubauba kwakuchita: Polystyrene ilateteeta aawo nokwatontola loko mpawo ilafwambaana kuyuma aawo noitontola, akupa kuti nzila yakupanga ibe kabotu alimwi iitakatazyi kweendelezya.
3. Kusalala Kupati: Misyobo imwi ya polystyrene ilaa kusalala kubotu, kupa kuti idumide kapati mukupakila zintu ooko kutondezya zintu nkokuyandika.
4. Kukkalilila kwamakemikalu: Polystyrene ilakkalilila mumasena miingi yamakemikalu mpawo ilakonzya kukazya kubola.
5. Kukonzya kubelesegwa lubo: Polystyrene nchintu chikonzya kubelesegwa lubo, kweendelana amakkampani aamazubaano aakubikkila maanu kukuzumanana.
II. Kubelesyegwa kwa Polystyrene mumakwebo aasiyene-siyene
Twaambilizya bube bwayo bubotu, polystyrene ilabelesyegwa kapati mumakkampani miingi:
1. Makwebo aakubikkila zintu: Polystyrene ilabelesyegwa kapati mukupanga zibelesyo zyakubikkila zyakulya, nkomeki, zibelesyo zyakujika, azintu zimwi zyakupaka zyakulya. Kukazya kwawo kumeenda akusalala kwawo kupa kuti ibe nzila mbotu yakubikka chakulya mumabbokesi. Kuyungizya waawo, polystyrene ilakonzya kuchitwa kuba chikwabilizyo chakunyamuna zintu zitali kabotu mbuli zibelesyo zyamagesi azintu zyamuŋanda.
2. Makwebo aaBuumi: Polystyrene alimwi ilabelesyegwa kapati mukupanga zibelesyo zyabusilisi, mbuli ma syringe aasowa buyo alimwi ama tube aakusunka. Kubula toxic alimwi nkuuba-uba kugwisya tuzunda kupa kuti ube chintu chiyandikana loko muchibaka chabusilisi.
3. Makwebo aamagesi: Mumakwebo aamagesi, polystyrene ilabelesyegwa kapati kupanga zintu zyakukwabilila magesi alimwi azyakuvwumbilila zintu zyamagesi ziindene-indene. Kukwabilila kwayo kubotu akukonzya kubumbwa kweendelana azyeelelo zisumpukide ziyandika kuzibelesyo zyamagesi.
III. Bubotu amapenzi aa Polystyrene
Nikuba kuti polystyrene ilijisi bubotu bunji, ilijisi buyumuyumu bumwi mukubelesyegwa kwayo. Chakusanguna, buteteete bwa polystyrene bulalesya kubelesegwa kwayo mubukkale oomo mokuyandika nguzu zyakuuma. Chabili, nikuba kuti ilakonzya kubelesegwa lubo, mweelwe wini wakubelesya lubo uchichili munsi-munsi. Kuya kunembo, polystyrene ilakonzya kugwasya kusofwaazya mapulasitiki muchiindi chakupanga akubelesyegwa, mpawo eezi zilakonzya kuleta ntenda kubusena.
Nokuba boobo, akusumpuka kwabusongo, zintu zyiingi zili mukuvwuntauzyigwa akubelesegwa. Mbuli chitondeezyo, kuchincha kwa copolymer kulakonzya kuyungizya kuyuma akukazya kutyompokelwa kwa polystyrene, mpawo kuyaambele kwabusongo bupya bwakubelesya zintu zipya kulakonzya kusumpula kubelesegwa kwa polystyrene, aboobo kuchesya ntenda zyakwe kubusena.