Iyini i-cellulose acetate?
I-Cellulose acetate ibhekisela ku-resin ye-thermoplastic etholwe nge-esterification ene-acetic acid njenge-solvent ne-acetic anhydride njenge-acetylating agent ngaphansi kwesenzo se-catalyst. i-organic acid esters.
Usosayensi uPaul Schützenberge waqala ukwenza lo mcu ngo-1865, futhi wawungomunye wemicu yokuqala yokwenziwa. Ngemuva kweminyaka yocwaningo, kuze kube ngu-1940, i-cellulose acetate yaba enye yezinto zokusetshenziswa ezibaluleke kakhulu ekukhiqizeni amafreyimu eglasi lamehlo.
Kunganiacetate eyeglass ozimeleeyingqayizivele kangaka?
Amafreyimu e-acetate angakhiqizwa ngemibala ehlukahlukene namaphethini ngaphandle kwesidingo sokupenda ifreyimu.
Ukwendlaleka kwe-acetate kuletha amazinga ahlukahlukene okukhanya nephethini kuhlaka. Khona-ke lo mklamo omuhle wenza amafreyimu e-acetate abe yisinqumo esihle kakhulu kunezinhlaka zengilazi zamehlo zepulasitiki ezivamile.
Uhlaka lwe-acetate vs ifreyimu yepulasitiki. Uyini umehluko phakathi kwabo?
Amafreyimu e-acetate anesisindo esilula futhi ngokuvamile abhekwa njengekhwalithi engcono kunamafreyimu epulasitiki. Amashidi e-acetate aziwa ngezakhiwo zawo ze-hypoallergenic, okuwenza abe yisinqumo esidumile kubantu abanesikhumba esibucayi. Ngokungafani namanye amafreyimu epulasitiki noma ensimbi, angabangela ukungezwani komzimba.
Ungathola amafreyimu epulasitiki aphezulu kakhulu. Nokho, ngokuvamile awakhethwa ngaphezu kozimele be-acetate ngenxa yezizathu ezilandelayo:
(1) Inqubo yokukhiqiza yenza uhlaka lwepulasitiki lube bushelelezi kunohlaka lwe-acetate;
(2) Uma kungekho ubakaki wensimbi ethempelini, kunzima ukulungisa izibuko zepulasitiki;
(3) Izinketho ezimbalwa zemibala namaphethini
Kodwa into eyodwa, uzoqaphela ukuthi amafreyimu e-acetate ngokuvamile abiza kakhulu kunezinhlaka zepulasitiki ezivamile.
Kodwa amafreyimu wamehlo ayinto yansuku zonke esiyisebenzisa isikhathi eside. Ngalo mqondo, ukuqina kubalulekile, futhi ifreyimu ye-acetate ihlala isikhathi eside.
Udinga nini ukukhetha amafreyimu e-acetate?
(1) Ilula futhi inethezekile
Njengenye yezidingo zansuku zonke, ifreyimu ye-eyeglass ye-acetate elula ngeke ibeke umthwalo osindayo ebhulohweni lekhala. Kusukela ekuvuleni amehlo ekuseni kuya ekubekeni ikhanda phezu komcamelo ebusuku, ngeke uzizwe ungakhululekile ngisho noma udinga ukufaka izibuko usuku lonke.
(2) Ukuqina
Lesi isici esibalulekile esenza amafreyimu wamehlo e-acetate agqame kupulasitiki wendabuko noma ezinye izinto. Amafreyimu e-acetate enziwa ngokusikwa, ukwakha nokupholisha izingcezu zezinto ezibonakalayo, okuwenza aqine njengensimbi futhi alungele amafreyimu engilazi yamehlo.
(3) Umklamo ocebile
Ungacabanga ukukhetha ifremu yengilazi yamehlo uma ingenawo umklamo noma umbala? Into eyodwa esobala ukuthi amafreyimu e-acetate aklanyelwe ukuba abe yimfashini kuqala. I-Cellulose acetate ingaba uhlaka lwengilazi yamehlo oluchaza imfashini nesitayela.
Ingaphezulu lamafreyimu epulasitiki endabuko ngokuvamile afuthwe ngemibala namaphethini. Ingase ibe nomklamo omuhle noma umbala. Kodwa njengoba kukha phezulu kuphela, ukusetshenziswa kwansuku zonke kungabangela umbala wayo ongaphezulu kanye nephethini kufiphele. Ngemva konyaka noma ngisho nezinyanga ezimbalwa, angase angabi muhle njengakuqala. Ngokungafani namafreyimu e-eyeglass epulasitiki, i-acetate yenza ukuklama kube lula ukugcina, ishidi le-acetate lingaklanywa ngamaphethini anemibala, izendlalelo ezihlukene nemibala eminingi ongakhetha kuyo, umklamo ohlehlisiwe ungagcina uhlamvu lwawo ngokuphumelelayo ngaphandle kokufafaza noma ukupenda.
Ekuphetheni
I-Acetate ikhululekile, ingasindi futhi isesitayeleni kuzo zonke izidingo zakho. Ngakho-ke, kungashiwo ukuthi yiyona nto engcono kakhulu yokwenza amafreyimu wezibuko.
Ngakho-ke, uma unquma ukuthenga amafreyimu engilazi yamehlo amasha ngokuzayo, sicela ucabangele ukusebenzisa amafreyimu enziwe nge-acetate. Uma ungaqiniseki ukuthi ungaqala kuphi, iqoqo le-tortoiseshell eliyisisekelo lingase libe yindawo enhle yokuqala.
Isikhathi sokuthumela: Jul-27-2022