Okumhlophe, okukhanyayo, okulula, nokumsulwa, okufanekisela ubumsulwa.
Abantu abaningi bathanda izinto ezimhlophe, futhi izimpahla ezithengwayo zivame ukwenziwa ezimhlophe.Ngokuvamile, abantu abathenga izinto ezimhlophe noma abagqoke izingubo ezimhlophe bazoqaphela ukuthi abamhlophe bangathola noma yimaphi amabala.Kodwa kukhona ingoma ethi, “Kulo mkhathi osheshayo, yenqaba unomphela.”Kungakhathaliseki ukuthi ungakanani umzamo owenzayo ukuze ugcine lezi zinto zingangcoliswa, zizophenduka zibe phuzi ngokwazo.Isonto lonke, unyaka, noma iminyaka emithathu, ufaka ikesi le-headphone ukuze usebenze nsuku zonke, futhi ihembe elimhlophe ongaligqokanga ku-wardrobe liphenduka libe phuzi ngokwakho.
Eqinisweni, ukuphuzi kwemicu yezingubo, amasoli ezicathulo anwebekayo, namabhokisi e-headphone epulasitiki kuwukubonakaliswa kokuguga kwe-polymer, okwaziwa ngokuthi ukuphuzi.Ukuphuzi kusho isenzakalo sokuwohloka, ukuhlela kabusha, noma ukuxhumanisa ama-molecule emikhiqizo ye-polymer ngesikhathi sokusetshenziswa, okubangelwa ukushisa, imisebe yokukhanya, i-oxidation, nezinye izici, okuholela ekwakhekeni kwamanye amaqembu asebenzayo anombala.
Lawa maqembu anombala ngokuvamile amabhondi e-carbon carbon double (C=C), amaqembu e-carbonyl (C=O), amaqembu ama-imine (C=N), njalonjalo.Lapho inani lamabhondi e-conjugated carbon carbon double lifinyelela ku-7-8, ngokuvamile avela aphuzi.Imvamisa, lapho ubona ukuthi imikhiqizo ye-polymer iqala ukuphuzi, izinga lokuphuzi livame ukukhula.Lokhu kungenxa yokuthi ukuwohloka kwama-polymers kuwuchungechunge, futhi lapho inqubo yokuwohloka iqala, ukuhlukana kwamaketanga amangqamuzana kufana ne-domino, iyunithi ngayinye iwela ngayinye.
Ziningi izindlela zokugcina impahla imhlophe.Ukwengeza i-titanium dioxide kanye ne-fluorescent whitening agents kungathuthukisa ngempumelelo umphumela wokumhlophe wezinto ezibonakalayo, kodwa akukwazi ukuvimbela okokusebenza ukuthi kungabi phuzi.Ukunciphisa ukuphuzi kwama-polymers, ama-stabilizers okukhanya, ama-absorber okukhanya, ama-ejenti okucima, njll.Lezi zinhlobo zezithasiselo zingamunca amandla athwalwa ukukhanya kwe-ultraviolet ekukhanyeni kwelanga, kubuyisele i-polymer esimweni esizinzile.Futhi ama-anti-thermal oxidant angathwebula ama-radicals mahhala akhiqizwa yi-oxidation, noma avimbe ukuwohloka kwamaketanga e-polymer ukuze aqede ukusabela kweketango lokuwohloka kweketango le-polymer.Izinto zokwakha zinesikhathi sokuphila, futhi izithasiselo nazo zinesikhathi sokuphila.Yize izengezo zinganciphisa ngempumelelo izinga le-polymer yellowing, zona ngokwazo zizohluleka kancane kancane ngesikhathi sokusetshenziswa.
Ngaphezu kokwengeza izithasiselo, kungenzeka futhi ukuvimbela ukuphuzi kwe-polymer kwezinye izici.Isibonelo, ukunciphisa ukusetshenziswa kwezinto ekushiseni okuphezulu nasezindaweni ezikhanyayo zangaphandle, kuyadingeka ukusebenzisa i-coat ebamba ukukhanya ezintweni uma uzisebenzisa ngaphandle.Ukuphuzi akuthinti nje kuphela ukubukeka, kodwa futhi kusebenza njengesignali yokuwohloka kokusebenza komshini noma ukwehluleka!Lapho izinto zokwakha ziba phuzi, kufanele kushintshwe izinto ezintsha ngokushesha ngangokunokwenzeka.
Isikhathi sokuthumela: Dec-20-2023