Cov Khoom Siv TPU Siab Rau Kev Ua Yeeb Yam TPU

Cov Lus Qhia thiab Cov Ntawv Thov Kev Lag LuamCov khoom siv raw TPURau cov yeeb yaj kiab siv dav hauv ntau yam lag luam vim lawv qhov kev ua tau zoo heev. Cov hauv qab no yog cov lus qhia ntxaws ntxaws Askiv: 1. Cov Ntaub Ntawv Tseem Ceeb TPU yog lub npe luv ntawm thermoplastic polyurethane, tseem hu ua thermoplastic polyurethane elastomer. TPU cov khoom siv raw rau cov yeeb yaj kiab feem ntau yog ua los ntawm polymerizing peb cov khoom siv raw tseem ceeb: polyols, diisocyanates, thiab saw extenders. Polyols muab cov ntu mos ntawm TPU, muab nws nrog kev ywj pheej thiab elasticity. Diisocyanates react nrog polyols los tsim cov ntu nyuaj, uas pab txhawb rau lub zog thiab kev ruaj khov ntawm TPU. Cov saw extenders siv los ua kom qhov hnyav molecular thiab txhim kho cov khoom siv kho tshuab ntawm TPU. 2. Cov Txheej Txheem Tsim Khoom TPU cov yeeb yaj kiab yog ua los ntawm TPU cov ntaub ntawv granular los ntawm cov txheej txheem xws li calendering, casting, blowing, thiab txheej. Ntawm lawv, cov txheej txheem yaj - extrusion yog ib txoj kev siv ntau. Ua ntej, polyurethane yog sib xyaw nrog ntau yam additives, xws li plasticizers los txhim kho kev ywj pheej, stabilizers los txhim kho cua sov thiab lub teeb tsis kam, thiab pigments rau xim. Tom qab ntawd, nws yog cua sov thiab yaj, thiab thaum kawg yuam los ntawm lub tuag los tsim cov yeeb yaj kiab txuas ntxiv, uas yog txias thiab qhwv rau hauv ib lub yob. Cov txheej txheem txias yog qhov tseem ceeb vim nws cuam tshuam rau qhov crystallization thiab kev taw qhia ntawm TPU molecules, yog li cuam tshuam rau cov khoom kawg ntawm zaj duab xis. 3. Cov yam ntxwv ua tau zoo 3.1 Cov khoom siv lub cev TPU zaj duab xis muaj kev ywj pheej zoo heev thiab elasticity, thiab tuaj yeem ncab thiab deformed rau qee qhov, thiab tuaj yeem rov qab mus rau lawv cov duab qub yam tsis muaj deformation, uas yog qhov tsim nyog rau cov xwm txheej uas xav tau kev khoov thiab ntswj ntau zaus. Piv txwv li, hauv kev tsim cov khoom siv hluav taws xob yooj ywm, TPU zaj duab xis tuaj yeem ua raws li cov nplaim nkhaus ntawm cov khoom siv. Tib lub sijhawm, nws kuj muaj lub zog tensile siab thiab lub zog tsim kua muag - tsis kam, uas tuaj yeem tiv taus kev cuam tshuam sab nraud thiab kev puas tsuaj. Qhov no ua rau TPU zaj duab xis tsim nyog rau cov ntawv thov hauv cov ntim khoom tiv thaiv, qhov twg lawv xav tau tiv taus kev tuav tsis zoo. 3.2 Cov khoom siv tshuaj lom neeg TPU zaj duab xis muaj kev tiv thaiv tshuaj lom neeg zoo corrosion, thiab muaj qee qhov kev kam rau cov kua qaub, alkalis, cov kuab tshuaj, thiab lwm yam, thiab tsis yooj yim rau corroded. Tshwj xeeb, qhov kev tiv thaiv hydrolysis ntawm polyether - hom TPU zaj duab xis tso cai rau lawv kom tswj tau qhov ua tau zoo hauv dej - ib puag ncig nplua nuj. Cov khoom no ua rau lawv zoo tagnrho rau kev siv hauv cov ntawv thov xws li cov txheej hauv dej thiab cov ntaub thaiv dej tsis muaj dej. 3.3 Kev Tiv Thaiv Huab CuaCov yeeb yaj kiab TPUtuaj yeem tswj tau qhov ua tau zoo nyob rau hauv qhov chaw kub sib txawv. Lawv tsis yooj yim los ua tawv thiab brittle nyob rau hauv qhov chaw kub qis, thiab lawv tsis yooj yim rau mos thiab deform nyob rau hauv qhov chaw kub siab. Lawv kuj muaj qee yam peev xwm los tiv taus ultraviolet rays, thiab tsis yooj yim rau laus thiab ploj mus nyob rau hauv lub teeb ntev. Qhov no ua rau TPU zaj duab xis haum rau kev siv sab nraum zoov, xws li tsheb sab nraud trim thiab sab nraum zoov rooj tog npog. 4. Cov txheej txheem ua tiav tseem ceeb Cov txheej txheem ua tiav tseem ceeb ntawmCov yeeb yaj kiab TPUsuav nrog kev tshuab - molding, casting, thiab calendering. Los ntawm kev tshuab - molding, TPU zaj duab xis nrog ntau qhov tuab thiab dav tuaj yeem tsim los ntawm kev inflating lub raj TPU molten. Casting cuam tshuam nrog kev nchuav cov kua TPU formulation rau ntawm qhov chaw tiaj tus thiab cia nws khov. Calendering siv cov menyuam los nias thiab ua kom TPU ua ib zaj duab xis ntawm qhov tuab xav tau. Cov txheej txheem no tuaj yeem tsim cov zaj duab xis TPU ntawm ntau qhov tuab, dav, thiab xim kom tau raws li qhov xav tau ntawm cov xwm txheej thov sib txawv. Piv txwv li, cov zaj duab xis TPU nyias thiab pob tshab feem ntau siv rau hauv kev ntim khoom, thaum cov zaj duab xis tuab thiab xim tuaj yeem siv rau hauv cov ntawv thov kho kom zoo nkauj. 5. Cov teb thov TPU zaj duab xis tuaj yeem sib xyaw nrog ntau yam ntaub los ua cov khau - cov ntaub sab saud nrog cov dej tsis muaj dej thiab ua pa tau, lossis cov ntaub kho kom zoo nkauj, uas siv dav hauv cov khaub ncaws xws li, cov khaub ncaws tiv thaiv hnub, ris tsho hauv qab, cov tsho nag, cov khaub ncaws tiv thaiv cua, T - tsho, cov khaub ncaws ua si thiab lwm yam ntaub. Hauv kev kho mob,Cov yeeb yaj kiab TPUsiv rau hauv cov ntawv thov xws li cov ntaub qhwv qhov txhab thiab cov khoom siv kho mob vim lawv cov biocompatibility. Tsis tas li ntawd, TPU kuj tau siv dav hauv cov ntaub ntawv khau, cov khoom ua si inflatable, cov khoom siv kis las, cov ntaub ntawv rooj zaum hauv tsheb, lub kaus, lub hnab nqa khoom, hnab tes thiab lwm yam teb. Piv txwv li, hauv cov khoom siv kis las, TPU zaj duab xis yog siv los ua cov ntaub thaiv thiab cov tuav, muab kev nplij siab thiab kev ua haujlwm ntev.