Polyurethane (PU), lebitso le felletseng la polyurethane, ke motsoako oa polymer, o hlahisitsoeng ka 1937 ke Otto Bayer le ba bang.Polyurethane e na le mekhahlelo e 'meli e meholo: polyester le polyether.Li ka etsoa ka polasetiki ea polyurethane (haholo-holo foam), likhoele tsa polyurethane (tse tsejoang e le spandex Chaena), rabara ea polyurethane le li-elastomers.Polyurethane ke thepa ea polymer e loketseng ho sebelisoa e le sekoaelo sa mabili ha ho etsoa li-casters tsa indasteri.
Melemo ea mantlha ea li-casters tsa polyurethane ke tse latelang:
Ntlha ea pele, ts'ebetso ea mefuta e feto-fetohang
Lipontšo tse 'maloa tsa ts'ebetso ea 'mele le ea mochini li ka fetoloa ka khetho ea lisebelisoa tse tala le liforomo, ka har'a mefuta e itseng ea liphetoho tse feto-fetohang, e le ho fihlela litlhoko tse ikhethang tsa mosebelisi bakeng sa ts'ebetso ea sehlahisoa.
Ea bobeli, khanyetso e phahameng ea abrasion
Ka pel'a metsi, oli le maemo a mang a ts'ebetso ea mecha ea phatlalatso, li-polyurethane casters li apara ho hanyetsa hangata ho makhetlo a mangata ho feta lisebelisoa tse tloaelehileng tsa rabara.Lisebelisoa tsa tšepe tse kang tšepe le tse ling tse thata, empa ha se hakaalo hore li hana ho apara!
Ea boraro, mekhoa ea ts'ebetso, ts'ebeliso e pharaletseng
Li-elastomer tsa polyurethane li ka bōptjoa ka rabara e sebelisoang ka kakaretso ka ho etsa polasetiki, ho kopanya le ho senya (MPU);li ka boela tsa etsoa rabara e metsi, ho tšeloa le ho bopa kapa ho fafatsa, ho tiisa le ho bopa centrifugal (CPU);li ka boela tsa etsoa lisebelisoa tsa granular le li-plastiki tse tloaelehileng ka ente, extrusion, calendering, blow molding le mekhoa e meng (CPU).Likarolo tse bōpiloeng kapa tse entsoeng ka ente, ka har'a mefuta e itseng ea boima, li ka boela tsa khaoloa, tsa sila, tsa cheka le lisebelisoa tse ling tsa mechine.
Ea bone, ho hanyetsa oli, ho hanyetsa ozone, ho hanyetsa botsofali, ho hanyetsa mahlaseli, ho hanyetsa mocheso o tlaase, ho fetisa molumo o motle, matla a matla a ho khomarela, biocompatibility e babatsehang le ho lumellana ha mali.Melemo ena ke eona e hlileng e etsang hore li-elastomers tsa polyurethane li sebelisoe haholo sesoleng, sepakapaka, li-acoustics, biology le likarolo tse ling.
Nako ea poso: Oct-30-2023