Product Name:polyurethane

Chigadzirwa molecular chimiro:

Chemical Properties:

Polyurethane (PU), iyo yakazara zita re polyurethane, inhengo yepolymer. 1937 naOtto Bayer uye kumwe kugadzirwa kwechinhu ichi. Kune marudzi maviri makuru e polyurethane, polyester type uye polyether type. Inogona kugadzirwa kuva polyurethane mapurasitiki (kunyanya furo), polyurethane fibers (inonzi spandex kuChina), polyurethane rubber uye elastomers.
Flexible polyurethane inonyanya mutsara chimiro ne thermoplasticity, iyo ine kugadzikana kuri nani, makemikari kuramba, kusimba uye michina zvivakwa kupfuura PVC furo, ine kushoma kudzvanya kusiyanisa. Iyo ine yakanaka yekupisa yekupisa, yekuvharisa inzwi, kuvhunduka kusagadzikana, uye anti-chepfu zvivakwa. Naizvozvo, inoshandiswa sekurongedza, kuvharidzira ruzha uye kusefa zvinhu. Rigid polyurethane plastiki yakareruka, inovhara mutsindo, yakanyanya kupisa kupisa, makemikari kuramba, yakanaka magetsi zvivakwa, nyore kugadzirisa, uye kunyura kwemvura. Inonyanya kushandiswa sezvinhu zvekugadzira zvekuvaka, mota, indasitiri yendege, kupisa kupisa uye kupisa kwemafuta. Polyurethane elastomer performance pakati pepurasitiki nerabha, mafuta kuramba, kupfeka kuramba, kudzikira tembiricha kuramba, kuchembera kuramba, kuoma kwakanyanya, elasticity. Inonyanya kushandiswa muindasitiri yeshangu uye indasitiri yezvokurapa. Polyurethane inogona zvakare kugadzirwa kuita zvekunamira, machira, synthetic dehwe, nezvimwe.

Application:

Polyurethanes ndechimwe chezvinhu zvakasiyana-siyana munyika nhasi. Kushandiswa kwavo kwakawanda kunobva pafuro rinochinjika mufenicha yakasimudzwa, kune furo rakaomarara sekuisa mumadziro, matenga nemidziyo yemagetsi kune thermoplastic polyurethane inoshandiswa mumidziyo yekurapa neshangu, kusvika kumachira, zvinonamira, sealants uye elastomers anoshandiswa pauriri uye mukati memotokari. Polyurethanes yakawedzera kushandiswa mukati memakore makumi matatu apfuura mumhando dzakasiyana dzekushandisa nekuda kwekunyaradza kwavo, mutengo wemabhenefiti, kuchengetedza kwesimba uye kunogona kuitika kwezvakatipoteredza. Ndezvipi zvimwe zvezvinhu zvinoita kuti polyurethanes idiwe zvakadaro? Polyurethane durability inobatsira zvakanyanya kuhupenyu hurefu hwezvigadzirwa zvakawanda. Kuwedzerwa kwehupenyu hwechigadzirwa uye kuchengetedza zviwanikwa zvakakosha zvezvakatipoteredza izvo zvinowanzofarira kusarudzwa kwepolyurethanes[19-21]. Polyurethanes (PUs) inomiririra kirasi yakakosha ye thermoplastic uye thermoset mapolymers sezvo iwo ma mechanic, thermal, uye makemikari zvimiro zvinogona kuenderana nekuita kweakasiyana polyols uye poly-isocyanates.