i-thermoplastic polyurethane

I-Thermoplastic Polyurethane (TPU) iyi-elastomer ye-thermoplastic esebenza kahle kakhulu enezakhiwo ezimbili ezihlukile zokuqina kwerabha kanye nokucutshungulwa kwepulasitiki. Yasungulwa okokuqala ngo-1937, i-TPU isibe ngenye yezinto ze-polymer ezikhula ngokushesha futhi eziguquguqukayo kakhulu emikhakheni yezimboni yesimanje. Ngokungafani ne-thermoset polyurethane evamile engenakubunjwa kabusha ngemva kokulungiswa, i-TPU ine-thermal plasticity eguquguqukayo: iyathamba futhi ibumbeke uma ishiswa, futhi iqine ibe sesimweni esiqinile esizinzile uma ipholisiwe, okwenza kube lula ukucubungula nokuvuselela okuphindaphindiwe ngaphandle kokulahlekelwa okukhulu kwezakhiwo nezakhiwo zemishini. Ngokwekhemikhali, i-TPU iyi-block copolymer ehlukanisiwe eyenziwe nge-polyaddition reaction yama-diisocyanates, ama-polyol amade (i-polyether noma i-polyester), kanye ne-small-molecule chain extenders. Isakhiwo sayo sama-molecule siqukethe izingxenye eziqinile ezishintshanayo kanye nezingxenye ezithambile, ezinikeza i-TPU izinzuzo zokusebenza eziphelele nezilungisekayo ezihlukanisa namanye ama-elastomer.

Ukusebenza okuyingqayizivele kwe-TPU kuvela esakhiweni sayo sokuhlukaniswa kwe-microphase esakhiwe yizingxenye eziqinile nezithambile. Izingxenye eziqinile, ezakhiwe ngamaqembu e-urethane, zakha amaphuzu okuxhumanisa ngokomzimba ngokusebenzisa ukubopha kwe-hydrogen phakathi kwamamolekyuli, okunikeza i-TPU amandla aphezulu okudonswa, ukuqina, ukumelana nokuguguleka kanye nokumelana nokushisa. Izingxenye ezithambile, ezenziwe kakhulu ngamaketanga amade e-polyester noma e-polyester, zinikeza izinto ukuguquguquka okuhle kakhulu, ukuqina, ukumelana nokushisa okuphansi kanye nokuqina. Isilinganiso sezingxenye eziqinile nezithambile singalungiswa ngokuguquguqukayo ngesikhathi sokukhiqizwa, okuvumela abakhiqizi ukuthi benze ngezifiso imikhiqizo ye-TPU ngobunzima obuhlukene, ukuqina kanye nezakhiwo zemishini ukuze zivumelane nezidingo ezahlukahlukene zezimboni. Ngokusekelwe ezinhlotsheni zezingxenye ezithambile, i-TPU yezentengiselwano ihlukaniswe kakhulu yi-polyester TPU, i-polyether TPU kanye ne-TPU ehlanganisiwe, ngayinye inezimo zokusetshenziswa eziqondiwe.

Izakhiwo Ezinhle Kakhulu Zokuqina Nezomshini: I-TPU ikhombisa ukuqina okuphezulu, amandla avelele okudonseka nokuklebhula, kanye nokumelana okunamandla kokucindezela. Ingamelana nokugoba nokwelula okuphindaphindiwe ngaphandle kokuguquka okuhlala njalo, ingcono kakhulu kunezinto zerabha nezepulasitiki ezivamile. – Ukumelana Nokugqokwa Okuphezulu Nokuklwebheka: Njengoba ingenye yezindlela ezinhle kakhulu zokumelana nokugqokwa phakathi kwama-elastomer avamile, i-TPU isetshenziswa kabanzi ezingxenyeni ezingagugi ezidinga isevisi yesikhathi eside. – Ukuzinza Okuhle Kwamakhemikhali: Ibonisa ukumelana okunamandla namafutha, amanzi, i-asidi encibilikisiwe, i-alkali encibilikisiwe kanye nezinyibilikisi eziningi eziphilayo, igcina ukusebenza okuzinzile ezindaweni eziyinkimbinkimbi zamakhemikhali. – Ukuzivumelanisa Nemvelo Okuhle Kakhulu: I-Polyether TPU inokumelana okuvelele kwe-hydrolysis kanye nokuqina okuphansi kokushisa, kuyilapho i-polyester TPU inokumelana okungcono kwamafutha kanye nokuqina komshini. Zonke izinto ze-TPU zinokumelana okuhle nesimo sezulu, zimelana nokuguga okubangelwa imisebe ye-ultraviolet kanye nokushintsha kwezinga lokushisa. – Ukucutshungulwa Okuhle Nokusetshenziswa Kabusha: Isekela ubuchwepheshe bendabuko bokucubungula i-thermoplastic okuhlanganisa ukubumba ngomjovo, ukukhipha, ukubumba ngokuqhuma kanye nokulungisa. Izinto ze-TPU ezilahliwe zingancibilikiswa futhi zicutshungulwe kabusha, zivumelane nemibono yokukhiqiza eluhlaza futhi eqhubekayo.

I-Polyester TPU: Ibonakala ngamandla aphezulu omshini, ukumelana okuhle kwamafutha, ukumelana nokuguguleka kanye nokumelana nokuguga. Isetshenziswa kabanzi kwizesekeli zezimboni, izinto zokwakha izicathulo, izingxenye zokuvala kanye nemikhiqizo eqinile yokunwebeka. – I-Polyether TPU: Inezici ezinhle kakhulu zokumelana ne-hydrolysis, ukuguquguquka kokushisa okuphansi, izakhiwo ezivikela amagciwane kanye nokubola, kanye nobuningi obuphansi. Ilungele imishini yemvelo yamanzi, izinto zokwelapha, amapayipi aguquguqukayo kanye nemikhiqizo yangaphandle. – I-TPU Ekhethekile Esebenzayo: Kubandakanya i-TPU evimbela ilangabi, i-TPU eqhubayo, i-TPU emelana nokushisa okuphezulu kanye ne-TPU esuselwe ku-bio. Eminyakeni yamuva nje, i-TPU esuselwe ku-bio eyenziwe ngezinto zokusetshenziswa ezivuselelekayo ithuthuke ngokushesha, yaba yindlela eqhubekayo ye-TPU yendabuko esuselwe ku-fossil.

Ngenxa yokusebenza kwayo ngokwezifiso kanye nezinzuzo eziphelele, i-TPU ifinyelele ezimbonini ezahlukahlukene. Embonini yezimpahla zabathengi, isetshenziswa ezicathulweni zezicathulo zezemidlalo, ezikesini zokuvikela, emabhandeni anwebekayo nasezimpahleni zezemidlalo. Embonini yokukhiqiza yezimboni, isebenza njengamabhande okuhambisa angagugi, amapayipi e-hydraulic, ama-gasket okuvala kanye nezingxenye zokucindezela ngomshini. Embonini yezimoto, i-TPU isetshenziswa ezingxenyeni zangaphakathi zezimoto, izingxenye ezingangeni manzi nezibamba ukushaqeka, kanye nezingubo zokuvikela zangaphandle. Ngaphezu kwalokho, isetshenziswa kabanzi emishinini yezokwelapha, izesekeli ze-elekthronikhi, izinto zezindiza kanye nezimboni zamandla amasha.

Ngokuthuthuka kwezinqubomgomo zokuvikela imvelo eluhlaza kanye nokuthuthukiswa kwezimboni, imboni ye-TPU iqhubekela phambili ekusebenzeni okuphezulu, ukusebenza kanye nokusimama. Ucwaningo kanye nokusetshenziswa kwe-TPU esekelwe ku-bio, i-TPU ebolayo kanye nobuchwepheshe bokukhiqiza obunekhabhoni ephansi sekuyizindlela ezivamile. Okwamanje, i-TPU eguquliwe enokumelana nomlilo okuphezulu, ukumelana nokushisa okuphezulu kanye nokuqina kokushisa okuphansi kakhulu ithuthukiswa njalo ukuze ihlangabezane nezidingo eziqinile zamasimu okukhiqiza aphezulu njengezimoto ezintsha zamandla kanye nezindiza.