Zoyera, zowala, zosavuta, komanso zoyera, zosonyeza kuyera.
Anthu ambiri amakonda zoyera, ndipo katundu wogula amapangidwa nthawi zambiri. Nthawi zambiri, anthu omwe amagula zinthu zoyera kapena kuvala zovala zoyera samalani kuti zoyera zithetse madontho. Koma pali Nyimbo yomwe imati, "M'chilengedwe cha nthawi yomweyo, chilengedwe chonse, kukakana kwamuyaya." Ngakhale mutakhala kuti mukuyesetsa kuchita zinthuzi kuti musadetsedwe, amazisintha chikaso pang'onopang'ono. Kwa sabata limodzi, chaka, kapena zaka zitatu, mumavala mutu wamutu tsiku lililonse, ndipo malaya oyera omwe simunavatse zovala zachikaso.
M'malo mwake, chikasu cha ulusi wovala zovala, nsapato zamiyendo, ndi mabokosi a foni apulasitiki ndi mawonekedwe okalamba polymer, omwe amadziwika kuti ali chikasu. Chikasochi chimanena za kuwonongeka kwa zowonongeka, kukonzanso, kapena kuloza ma molekyu a zinthu za polymer pakugwiritsa ntchito, zoyambitsidwa ndi mitundu ina, ndikupanga zina mwa magwiridwe antchito a utoto.
Magulu achikuda awa nthawi zambiri amakhala zolumikizana ndi kaboni kaboni (c = c), magulu a carbonyl (c = o), magulu azomera (c = n), ndi zina zotero. Pamene zingwe zolumikizidwa kaboni kaboni kaboni pa 7-8, nthawi zambiri zimawoneka chikasu. Nthawi zambiri, mukazindikira kuti zinthu za polymer zikuyamba kutembenukira chikasu, kuchuluka kwachikasu kumakula. Izi ndichifukwa choti kuwonongeka kwa ma polima ndi njira yaing'ono, ndipo nthawi yomweyo kuwonongeka kwa ma unyolo kumayamba, kuwonongeka kwa unyolo kwa ma talecular kuli ngati domino, ndi gawo lililonse lomwe limatsika ndi imodzi.
Pali njira zambiri zokhalira zoyera. Kuonjezera titaniium dioxide ndi fluorescent othandizira oyera oyeretsa amatha kukulitsa chonyansa cha zinthuzo, koma sichitha kuletsa zomwe zili pachikasu. Kuti muchepetse chikasu cha olima, okhazikika okhazikika, kuyamwa kuwala, owonjezera otha, etc. atha kuwonjezeredwa. Mitundu yowonjezerayi imatha kuyamwa mphamvu yomwe imanyamulidwa ndi kuwala kwa ultraviolet padzuwa, kubweretsa polymer kumalo okhazikika. Ndipo ma ormal oxidal amatha kugwira ma radicals aulere omwe amapangidwa ndi oxidation, kapena kuletsa kuchepa kwa maunyolo a polymer kuti athetse kuwonongeka kwa unyolo wa polima. Zipangizo zimakhala ndi moyo, ndipo zowonjezera zimakhalanso ndi moyo. Ngakhale zowonjezera zimatha kuchepetsa kuchuluka kwa polimatu chikasu, iwowo adzalephera nthawi yomwe amagwiritsa ntchito.
Kuphatikiza pa kuwonjezera zowonjezera, ndizothekanso kupewa chikasu kuchokera kuzinthu zina. Mwachitsanzo, kuti muchepetse kugwiritsa ntchito zida kutentha kwambiri komanso malo owala kunja, ndikofunikira kutsatira kuwala kotenga zokutira ku zomwe mwazigwiritsa ntchito panja. Chikasu sichimangokhudza mawonekedwewo, komanso ndi chizindikiro cha kuwonongeka kwa magwiridwe antchito kapena kulephera! Mukakhala ndi zida zomanga, zogwirizira zatsopano ziyenera kusinthidwa posachedwa.
Post Nthawi: Dis-20-2023