Chifukwa chiyani chikopa chabodza chili bwino kuposa chikopa chachilengedwe

Chifukwa cha makhalidwe ake abwino achilengedwe, imagwiritsidwa ntchito kwambiri popanga zinthu zofunika tsiku ndi tsiku komanso zinthu zamafakitale, koma chifukwa cha kukula kwa anthu padziko lonse lapansi, kufunikira kwa chikopa kwa anthu kwawirikiza kawiri, ndipo chikopa chachilengedwe chochepa kwakhala kulephera kukwaniritsa zosowa za anthu kwa nthawi yayitali. Pofuna kuthetsa mkanganowu, asayansi anayamba kufufuza ndikupanga chikopa chopangidwa ndi chikopa chopangidwa zaka zambiri zapitazo kuti athetse kusowa kwa chikopa chachilengedwe. Zaka zoposa 50 za mbiri ya kafukufuku ndi njira yopangira chikopa chopangidwa ndi chikopa chopangidwa ndi chikopa chopangidwa ndi chikopa chopangidwa ndi chikopa chachilengedwe.

Asayansi anayamba kuphunzira ndi kusanthula kapangidwe ka mankhwala ndi kapangidwe ka chikopa chachilengedwe, kuyambira ndi nsalu yopakidwa vanishi ya nitrocellulose, ndikulowa mu chikopa chopangira cha PVC, chomwe ndi m'badwo woyamba wa chikopa chopangira. Pachifukwa ichi, asayansi apanga kusintha kwakukulu ndi kufufuza, choyamba ndi kusintha kwa substrate, kutsatiridwa ndi kusintha ndi kusintha kwa utomoni wokutira. M'zaka za m'ma 1970, nsalu zosalukidwa za ulusi wopangira zidawoneka ngati acupuncture, bonding ndi njira zina, kotero kuti substrate inali ndi gawo looneka ngati lotus ndi mawonekedwe a ulusi wopanda kanthu, zomwe zimapangitsa kuti ikhale ndi mawonekedwe oboola, omwe anali ogwirizana ndi kapangidwe ka netiweki ka chikopa chachilengedwe. Zofunikira: Panthawiyo, pamwamba pa chikopa chopangira zida zimatha kukhala ndi kapangidwe kakang'ono ka polyurethane, komwe kuli kofanana ndi pamwamba pa chikopa chachilengedwe, kotero kuti mawonekedwe ndi kapangidwe ka mkati ka chikopa chopangira cha PU pang'onopang'ono zimakhala pafupi ndi za chikopa chachilengedwe, ndipo zinthu zina zakuthupi zimakhala pafupi ndi za chikopa chachilengedwe. Mtundu wake ndi wowala kwambiri kuposa chikopa chachilengedwe; kukana kwake kupindika kutentha kwa chipinda kumatha kufika nthawi zoposa miliyoni, ndipo kukana kupindika kutentha kochepa kumathanso kufika pamlingo wa chikopa chachilengedwe.

Pambuyo pa chikopa chopangidwa ndi PVC, chikopa chopangidwa ndi PU chapita patsogolo kwambiri paukadaulo monga cholowa m'malo mwa chikopa chachilengedwe pambuyo pa zaka zoposa 30 za kafukufuku ndi chitukuko cha akatswiri asayansi ndi ukadaulo.

Chophimba cha PU pamwamba pa nsalu chinayamba kugulitsidwa m'zaka za m'ma 1950, ndipo mu 1964, DuPont adapanga chikopa chopangidwa ndi PU cha nsapato zapamwamba. Pambuyo pa zaka zoposa 20 za kafukufuku ndi chitukuko chopitilira, chikopa chopangidwa ndi PU chakula mofulumira pankhani ya mtundu wa malonda, mitundu ndi zotuluka. Kugwira ntchito kwake kukuyandikira kwambiri chikopa chachilengedwe, ndipo zinthu zina zimaposa chikopa chachilengedwe, kufika pamlingo womwe sungathe kusiyanitsa ndi chikopa chachilengedwe, ndipo chimakhala ndi malo ofunikira kwambiri pa moyo wa tsiku ndi tsiku wa anthu.

Chikopa chopangidwa ndi microfiber polyurethane ndi m'badwo wachitatu wa chikopa chopangidwa chomwe chawonekera m'misika yamkati ndi yapadziko lonse lapansi. Nsalu yosalukidwa ya netiweki yake yamitundu itatu imapanga mikhalidwe yoti chikopa chopangidwa chipambane chikopa chachilengedwe pankhani ya substrate. Chogulitsachi chimaphatikiza kulowetsedwa kwa PU slurry yatsopano ndi kapangidwe ka pores otseguka komanso ukadaulo wokonza wa gawo lophatikizika pamwamba, lomwe limagwiritsa ntchito malo akuluakulu pamwamba komanso kuyamwa kwamphamvu kwa ulusi wabwino kwambiri, zomwe zimapangitsa chikopa chopangidwa ndi superfine cha PU kukhala ndi superfine yolumikizidwa. Kapangidwe ka hygroscopic ka chikopa chachilengedwe cha ulusi wa collagen kangayerekezeredwe ndi chikopa chachilengedwe chapamwamba pankhani ya kapangidwe ka mkati, mawonekedwe, kapangidwe ndi mawonekedwe, komanso kuvala bwino kwa anthu. Kuphatikiza apo, chikopa chopangidwa ndi microfiber chimaposa chikopa chachilengedwe pakulimbana ndi mankhwala, kufanana kwabwino, kupanga kwakukulu ndi kusinthasintha, komanso kukana madzi ndi bowa.

Machitidwe awonetsa kuti makhalidwe abwino kwambiri a chikopa chopangidwa sangasinthidwe ndi chikopa chachilengedwe. Kuchokera ku kusanthula kwa misika yamkati ndi yakunja, chikopa chopangidwa chasinthanso chikopa chachilengedwe chochuluka popanda zinthu zokwanira. Kugwiritsa ntchito chikopa chopangidwa ndi chikopa chopangidwa ngati zokongoletsera katundu, zovala, nsapato, magalimoto ndi mipando kwadziwika kwambiri ndi msika.