Aliphatic mndandanda TPU

Aliphatic TPUs ndi mtundu wina wake wa thermoplastic polyurethane yomwe imawonetsa kukana kwa UV, kuwapangitsa kukhala oyenera kugwiritsa ntchito kunja komwe kumakhala kovutirapo ndi kuwala kwa dzuwa.
Malinga ndi mankhwala a diisocyanate lipid components, TPU ikhoza kugawidwa m'magulu onunkhira komanso aliphatic. Aromatic ndiye TPU yodziwika kwambiri yomwe timagwiritsa ntchito (yosagonjetsedwa ndi chikasu kapena chikasu ndiyosauka, osati chakudya), aliphatic nthawi zambiri imakhala yopangira zinthu zapamwamba kwambiri. Zitsanzo zimaphatikizapo zipangizo zamankhwala, zipangizo zomwe zimafuna kukana kwachikasu kosatha, ndi zina zotero.
Aliphatic imagawidwanso mu polyester / polyether.
Gulu la kukana kwachikasu: Nthawi zambiri amafaniziridwa ndi imvi khadi, yogawidwa m'magulu 1-5. Pambuyo poyesa kukana madontho achikasu monga Suntest, QUV kapena kuyesa kwina kwa dzuwa, yerekezerani kusintha kwa mtundu wa chitsanzo chisanachitike komanso pambuyo pa mayeso, kalasi yabwino kwambiri ndi 5, zomwe zikutanthauza kuti palibe kusintha kwa mtundu. 3 Zotsatirazi ndi zoonekeratu zakusinthika. Nthawi zambiri, 4-5, ndiye kuti, kusinthika pang'ono, yakumana ndi ntchito zambiri za TPU. Ngati simukufuna kusinthika konse, muyenera kugwiritsa ntchito aliphatic TPU, ndiye kuti, TPU yosakhala yachikasu, gawo lapansi si MDI, nthawi zambiri HDI kapena H12MDI, ndi zina zambiri, komanso kuyesa kwa UV kwanthawi yayitali. sichidzasintha.