Inqubo Yokukhiqiza Ipulasitiki Yenayiloni Nokusetshenziswa Kwayo Embonini Yezindwangu
I-Pendahuluan
Ipulasitiki ye-nylon uhlobo lwe-polymer yokwenziwa oluye lwaguqula izimboni ezahlukene, okuhlanganisa nezindwangu. Yatholakala ngo-1935 nguWallace Carothers eDuPont, i-nylon isibe yinto ekhethwayo ekukhiqizweni kwemikhiqizo eminingi ngenxa yezakhiwo zayo eziyingqayizivele, njengokuqina, amandla, kanye nokuqina. Lesi sihloko sizochaza inqubo yokukhiqiza ipulasitiki ye-nylon futhi sihlole ukusetshenziswa kwayo okuhlukahlukene embonini yezindwangu.
Umlando Nokutholakala Kwe-Nylon
Inayiloni yayingenye yama-polymer okuqala okwenziwa athuthukiswe futhi akhiqizwa kwezentengiselwano. Ukutholakala kwayo kuhlobene kakhulu nocwaningo lukaDuPont ekuqaleni kwekhulu lama-20, oluhlose ukuthola izinto ezintsha zokwenziwa ezizothatha indawo yesilika. Ngemva kweminyaka eminingana yocwaningo, uWallace Carothers nethimba lakhe baphumelela ekudaleni i-polyamide yokuqala ekhiqizwa ngobuningi, inayiloni 66.
Inqubo Yokukhiqiza Inayiloni
Ukukhiqizwa kwe-nylon kuhilela inqubo yamakhemikhali eyinkimbinkimbi, kusukela kuma-monomer kuya kuma-polymers. Nansi incazelo eningiliziwe:
1. Ukukhethwa Kwezinto Ezingavuthiwe: Izinto eziyisisekelo zokwenza i-nylon ziyi-monomers equkethe i-hexamethylenediamine ne-adipic acid. Zombili lezi zinto zinamaqembu e-amine asebenzayo (-NH2) kanye ne-carboxylic acid (-COOH), abalulekile enkambisweni yokwenza i-polymerization.
2. I-Condensation Polymerization: Inqubo yokuqala ekukhiqizweni kwe-nylon i-condensation polymerization. Kule nqubo, i-hexamethylenediamine ne-adipic acid ziyaxutshwa futhi zifudunyezwe kuze kube yilapho zisabela ekwakheni i-nylon 66 namanzi njengomkhiqizo olandelanayo. Ukusabela kungachazwa kanje:
\[
(NH_2)(CH_2)_6(NH_2) + (COOH)(CH_2)_4(COOH) \umcibisholo ongakwesokudla [-NH-(CH_2)_6-NH-CO-(CH_2)_4-CO-]_n + nH_2O
\]
3. Ukuphotha Nokushisa: Uma i-polymer isibunjiwe, isinyathelo esilandelayo inqubo yokuphotha. I-polymer encibilikisiwe idluliswa nge-spinneret—idivayisi efana nesihlungo enezimbobo ezincane—ukuze yakhe imicu emincane. Imicu eyakhiwe ibe isipholile futhi yelulwe ukuze kwandiswe amandla ayo nokuqina kwayo.
4. Ukugoqa Nokusonta: Imicu ye-nylon ibe isigoqwa ibe yintambo. Le ntambo ibe isidlula enkambisweni yokumhlopheza ukuze kususwe izinsalela ezisabelayo noma izinsalela zamakhemikhali bese ithambisa intambo.
5. Ukudweba Nokubumba: Le nqubo ihilela ukudweba i-filament ngesivinini esikhulu ukuze kwandiswe ubude namandla ayo. Ukubumba kungenziwa, kusetshenziswa izindlela ezahlukene zemishini nezokushisa ukuze kunikezwe izakhiwo ezithile ku-fibre, njengokunwebeka nokuguquguquka.
Ukusetshenziswa kweNylon Embonini Yezindwangu
Inayiloni isibe yinto ebalulekile ekukhiqizweni kwemikhiqizo ehlukahlukene yendwangu ngenxa yezakhiwo zayo ezinhle kakhulu. Nazi ezinye zezindlela esetshenziswa ngazo embonini yendwangu:
1. Izingubo Nezingubo: Inayiloni isetshenziswa kabanzi ekukhiqizeni izingubo ngenxa yezakhiwo zayo ezilula, ezihlala isikhathi eside, neziguquguqukayo. Indwangu yenayiloni ivame ukusetshenziswa ekukhiqizeni izingubo zangaphansi, amasokisi, izingubo zezemidlalo, kanye namajakethi okuvimba umoya.
2. Izindwangu Zansuku Zonke: Inayiloni ivame ukusetshenziselwa ukwenza izindwangu zansuku zonke njengezambulela, izikhwama, kanye nezesekeli zemoto. Le nto ikhethwa ngenxa yokumelana kwayo nokuguguleka kanye nokuqina kwayo ezimweni zezulu ezahlukahlukene.
3. Izimboni Ezikhethekile: Ezimbonini ezithile, njengezempi, inayiloni isetshenziselwa ukwenza amapharashuthi, izinto zokukhempa, kanye nentambo. Izinzuzo zenayiloni ngamandla okudonseka kanye nokumelana namakhemikhali zenza kube kuhle kakhulu kulezi zinhlelo zokusebenza.
4. Ifenisha Nokuhlobisa Ikhaya: Inayiloni isetshenziswa futhi kumakhaphethi kanye nefenisha. Amakhaphethi enziwe ngemicu yenayiloni aziwa ngokuqina kwawo, ukuhlanzwa kalula, kanye nokumelana kahle namabala.
5. Ukufaka Izintambo Zemvelo: Inayiloni ithathe indawo yezintambo eziningi zemvelo ngempumelelo, njengosilika noboya, ezindleleni eziningi zokusetshenziswa kwendwangu. Izinzuzo zayo ezikhiqizwe ngobuningi kanye nomnotho omkhulu uma kuqhathaniswa nezintambo zemvelo kwenza inayiloni ibe yisinqumo esiyinhloko emikhakheni eyahlukene yezimboni.
Izinzuzo kanye nokungalungi kwe-Nylon
Izinzuzo eziyinhloko ze-fibre ye-nylon amandla ayo ayingqayizivele okubamba kanye nekhono layo lokwelula ngezinga elithile ngaphambi kokuba ibuyele esimweni sayo sokuqala (ukunwebeka). I-nylon nayo imelana nokuguguleka, ukubola, kanye namakhemikhali amaningi, okunikeza ukuqina okudingekayo ezinhlotsheni eziningi.
Kodwa-ke, inayiloni inezinkinga ezithile. Enye indlela yayo yokumunca umswakama ephansi uma iqhathaniswa nemicu yemvelo efana nekotini, engathinta induduzo ezindaweni ezishisayo. Ngaphezu kwalokho, inayiloni ingancibilika emazingeni okushisa aphezulu futhi idinga ukunakekelwa okukhethekile lapho ihlanzwa ukuze kuvinjelwe umonakalo.
Ukusungula Izinto Ezintsha kanye Nekusasa Le-Nylon Embonini Yezindwangu
Imboni yezindwangu iyaqhubeka nokukhula, futhi ukusungula izinto ezintsha ekukhiqizweni nasekusetshenzisweni kwemicu ye-nylon kuyaqhubeka. Abacwaningi manje basebenza ukudala ama-nylon anobungani nemvelo besebenzisa izinto zokusetshenziswa ezivuselelekayo kanye nezinqubo zokukhiqiza ezisebenza kahle kakhulu. Imizamo nayo iyaqhubeka yokuthuthukisa izinhlobo ze-nylon ezinezakhiwo ezikhethekile, njengezakhiwo ezilwa namagciwane noma ezimelana ne-UV, ngokusebenzisa izinguquko zamakhemikhali kanye nobuchwepheshe.
Ngaphezu kwalokho, ukuvuselelwa kabusha kwe-nylon kanye nokusetshenziswa kabusha kwayo sekuyinto ebalulekile ekunciphiseni umthelela emvelweni. Amaphrojekthi okuvuselela i-nylon evela ezimpahleni ezisetshenzisiwe noma imfucuza yokukhiqiza aseyinto ebalulekile njengoba ulwazi ngemvelo lukhula.
Isiphetho
Ipulasitiki ye-nylon ibe negalelo elikhulu ekuthuthukisweni kwemboni yezindwangu selokhu yatholakala eminyakeni engaphezu kwamashumi ayisishiyagalombili edlule. Ngenqubo yokukhiqiza ehilela i-polymerization kanye nokuphotha ibe yimicu, i-nylon isibe yinto ebaluleke kakhulu ekukhiqizweni kwemikhiqizo ehlukahlukene yezindwangu. Izinzuzo zayo maqondana namandla, ukuqina, kanye nokuguquguquka kwenza i-nylon ibe yisisombululo esiguquguqukayo emhlabeni wezindwangu. Ngocwaningo oluqhubekayo kanye nokusungula izinto ezintsha, ikusasa le-nylon libukeka likhanya ngokwengeziwe, ngethemba lokuthi imikhiqizo ye-nylon esimeme futhi enobungane nemvelo izosetshenziswa kabanzi esikhathini esizayo.
