High TPU Raw Khoom rau extrusion TPU Films

Specifications thiab Daim Ntawv Thov Kev Lag LuamTPU raw khoomrau cov yeeb yaj kiab tau siv dav hauv ntau qhov kev lag luam vim lawv qhov kev ua tau zoo heev. Cov nram qab no yog cov ncauj lus kom ntxaws lus Askiv - lus qhia: 1. Cov ntaub ntawv yooj yim TPU yog lub npe luv ntawm thermoplastic polyurethane, los yog hu ua thermoplastic polyurethane elastomer. TPU raw cov ntaub ntawv rau cov yeeb yaj kiab feem ntau yog tsim los ntawm polymerizing peb cov ntaub ntawv tseem ceeb: polyols, diisocyanates, thiab cov saw txuas ntxiv. Polyols muab ntu mos ntawm TPU, ua rau nws yooj yim thiab elasticity. Diisocyanates hnov ​​​​mob nrog polyols los tsim cov ntu nyuaj, uas ua rau muaj zog thiab ua haujlwm ntev ntawm TPU. Chain extenders yog siv los ua kom qhov hnyav molecular thiab txhim kho cov khoom ntawm TPU. 2. Cov txheej txheem ntau lawm TPU films yog tsim los ntawm TPU granular cov ntaub ntawv los ntawm cov txheej txheem xws li calendering, casting, tshuab, thiab txheej. Ntawm lawv, cov txheej txheem yaj - extrusion yog ib txoj hauv kev. Ua ntej, cov polyurethane yog tov nrog ntau yam additives, xws li plasticizers los txhim kho yooj, stabilizers los txhim kho tshav kub thiab lub teeb, thiab pigments rau xim. Tom qab ntawd, nws yog rhuab thiab melted, thiab thaum kawg yuam los ntawm ib tug tuag los tsim ib tug nruam zaj duab xis, uas yog txias thiab mob rau hauv ib tug yob. Cov txheej txheem cua txias yog qhov tseem ceeb vim nws cuam tshuam rau crystallization thiab kev taw qhia ntawm TPU molecules, yog li cuam tshuam cov khoom kawg ntawm zaj duab xis. 3. Cov yam ntxwv ua tau zoo 3.1 Cov Khoom Siv Lub Cev TPU cov yeeb yaj kiab muaj qhov ua tau zoo thiab elasticity, thiab tuaj yeem ncab thiab deformed rau qee qhov, thiab tuaj yeem rov qab mus rau lawv cov qauv qub yam tsis muaj deformation, uas yog tsim rau cov xwm txheej uas yuav tsum tau khoov thiab sib tw. Piv txwv li, hauv kev tsim cov khoom siv hluav taws xob hloov tau yooj yim, TPU cov yeeb yaj kiab tuaj yeem ua raws li qhov nkhaus ntawm cov khoom siv. Nyob rau tib lub sijhawm, nws kuj muaj lub zog tensile siab thiab tsim kua muag - lub zog ua haujlwm, uas tuaj yeem tiv taus sab nraud thiab kev puas tsuaj. Qhov no ua rau TPU films haum rau daim ntaub ntawv nyob rau hauv kev tiv thaiv ntim, qhov chaw uas lawv yuav tsum tau tiv nrog ntxhib tuav. 3.2 Chemical Properties TPU films muaj cov tshuaj tiv thaiv corrosion zoo, thiab muaj kev kam rau siab rau cov kua qaub, alkalis, cov kuab tshuaj, thiab lwm yam, thiab tsis yooj yim rau corroded. Hauv particular, hydrolysis tsis kam ntawm polyether - hom TPU zaj duab xis tso cai rau lawv tswj kev ua haujlwm ruaj khov hauv dej - nplua nuj ib puag ncig. Cov cuab yeej no ua rau lawv zoo tagnrho rau kev siv hauv cov ntawv thov xws li cov txheej hauv qab dej thiab cov dej tsis zoo. 3.3 Huab cua ResistanceTPU filmstuaj yeem tswj xyuas kev ua haujlwm ruaj khov hauv qhov sib txawv ntawm qhov kub thiab txias. Lawv tsis yooj yim los ua nyuaj thiab nkig nyob rau hauv qhov chaw qis - qhov kub thiab txias, thiab lawv tsis yooj yim rau soften thiab deform nyob rau hauv qhov kub thiab txias. Lawv kuj muaj lub peev xwm los tiv thaiv ultraviolet rays, thiab tsis yooj yim rau lub hnub nyoog thiab ploj mus nyob rau hauv lub sij hawm ntev raug. Qhov no ua rau TPU films haum rau kev siv sab nraum zoov, xws li tsheb sab nrauv trim thiab cov rooj tog zaum nraum zoov. 4. Main Processing Methods Cov txheej txheem tseem ceeb ntawmTPU filmsmuaj xws li tshuab - molding, casting, thiab calendering. Los ntawm tshuab - molding, TPU films nrog txawv thicknesses thiab widths yuav ua tau los ntawm inflating ib molten TPU raj. Casting suav nrog nchuav cov kua TPU ua kua rau ntawm qhov chaw tiaj tus thiab tso cai rau nws kom khov. Calendering siv rollers los nias thiab tsim TPU rau hauv zaj duab xis ntawm qhov xav tau tuab. Cov txheej txheem no tuaj yeem tsim TPU zaj duab xis ntawm qhov sib txawv thicknesses, dav, thiab xim kom tau raws li qhov xav tau ntawm cov ntawv thov sib txawv. Piv txwv li, cov yeeb yaj kiab TPU nyias thiab pob tshab feem ntau siv rau hauv ntim, thaum cov yeeb yaj kiab tuab thiab xim tuaj yeem siv rau hauv cov ntawv thov zoo nkauj. 5. Daim Ntawv Thov Fields TPU zaj duab xis tuaj yeem sib xyaw nrog ntau hom ntaub los ua cov khau - cov ntaub sab saud nrog cov dej tsis zoo thiab ua tsis taus pa, lossis cov ntaub zoo nkauj, uas yog siv dav hauv cov khaub ncaws xws li khaub ncaws, tshuaj pleev thaiv hnub, ris tsho hauv qab, raincoats, windbreakers, T - tsho, sportswear thiab lwm yam ntaub. Hauv kev kho mob,TPU filmsyog siv rau hauv daim ntaub ntawv xws li cov ntaub qhwv lub qhov txhab thiab cov cuab yeej kho mob txheej vim lawv biocompatibility. Tsis tas li ntawd, TPU kuj tau siv dav hauv cov ntaub ntawv khau, cov khoom ua si ua si, cov khoom ua si, cov khoom siv hauv tsheb, cov kaus mom, lub thawv rau khaub ncaws, hnab tes thiab lwm yam. Piv txwv li, hauv cov khoom siv kis las, TPU films yog siv los ua cov ntaub thaiv npog thiab tuav, muab kev nplij siab thiab ua haujlwm ntev.