PU ndi chiyani?

I. Chiyambi cha PU

PU, kapena polyurethane, ndi zinthu zopangira zomwe zimakhala ndi polyurethane. Chikopa cha PU ndi chikopa chowoneka bwino chomwe chimakhala ndi mawonekedwe abwinoko komanso olimba kuposa chikopa chachilengedwe.

Chikopa cha PU chimakhala ndi ntchito zosiyanasiyana, kuphatikiza kupanga mipando yamagalimoto, sofa, zikwama zam'manja, nsapato, ndi zovala, pakati pa ena. Ndizosangalatsa, zomasuka, zosavuta kuyeretsa ndi kusamalira, komanso zimachepetsa kufunika kwa zikopa za nyama, motero zimakwaniritsa zofunikira zachilengedwe zomwe zimaletsa nkhanza za nyama.

II. PU Material Analysis

1. Mapangidwe

Chigawo chachikulu cha chikopa cha PU ndi polyurethane, chomwe chimapangidwa ndi kuyanjana kwa polyether kapena polyester ndi isocyanate. Kuphatikiza apo, chikopa chopangidwa ndi PU chimakhalanso ndi zodzaza, mapulasitiki, ma pigment, ndi othandizira.

2. Maonekedwe

Chikopa chopangidwa ndi PU chimakhala ndi mawonekedwe komanso utoto wambiri, ndipo chimatha kutsanzira mitundu yosiyanasiyana yachikopa monga ng'ona, njoka ndi mamba ansomba kuti ikwaniritse zofuna zamitundu yosiyanasiyana.

3. Katundu Wakuthupi

Chikopa chopangidwa ndi PU chimakhala ndi zinthu zabwino kwambiri monga kulimba kwamphamvu, kukana kuvala, kukana madzi, komanso kusinthasintha. Ndikosavutanso kuyeretsa ndi kukonza kusiyana ndi zikopa zachilengedwe, zomwe zimapangitsa kuti zikhale zolimba.

4. Kugwiritsa Ntchito Mtengo

Poyerekeza ndi chikopa chachilengedwe, chikopa chopangidwa ndi PU chimakhala ndi zabwino zina monga mtengo wotsika, mtengo wotsika wopanga, komanso osafunikira zikopa zanyama, zomwe zimapangitsa kukhala chisankho chabwino m'moyo wamakono wamtawuni.

Pomaliza, chikopa chopangidwa ndi PU ndi cholowa m'malo mwapamwamba kwambiri chomwe chimadzitamandira chokongola, magwiridwe antchito apamwamba, komanso mitengo yabwino, ndikupangitsa kuti ikhale yotchuka pamsika. Pomwe kupita patsogolo kwaukadaulo komanso kufunikira kwa msika kukusintha, chikopa cha PU chikuyenera kukhala ndi ntchito zingapo mtsogolomu m'magawo monga magalimoto, mipando, zovala, ndi zikwama, kungotchulapo zochepa.