Umehluko phakathi kwe-TPU polyester ne-polyether, kanye nobudlelwano phakathi kwe-polycaprolactone ne-TPU

Umehluko phakathi kwe-TPU polyester ne-polyether, kanye nobudlelwano phakathii-polycaprolactone TPU

Okokuqala, umehluko phakathi kwe-TPU polyester ne-polyether

I-Thermoplastic polyurethane (TPU) iwuhlobo lwempahla ye-elastomer esebenza kakhulu, esetshenziswa kabanzi emikhakheni eyahlukene. Ngokwesakhiwo esihlukile sengxenye yayo ethambile, i-TPU ingahlukaniswa ngohlobo lwe-polyester nohlobo lwe-polyether. Kunomehluko omkhulu ekusebenzeni nasekusetshenzisweni phakathi kwalezi zinhlobo ezimbili.

I-Polyester TPU inamandla aphezulu nokumelana nokugqoka, izakhiwo eziqinile, izakhiwo zokugoba nokumelana ne-solvent kuhle kakhulu. Ngaphezu kwalokho, inokumelana okuhle kokushisa okuphezulu futhi ifanele ukusetshenziswa ezindaweni zokushisa eziphakeme. Kodwa-ke, ukumelana kwe-hydrolysis kwe-polyester TPU kubi kakhulu, futhi kulula ukungenwa ama-molecule amanzi nokuphuka.

Ngokungqubuzanayo,i-polyether TPUyaziwa ngamandla ayo aphezulu, ukumelana ne-hydrolysis kanye nokuqina okuphezulu. Ukusebenza kwayo okuphansi kwezinga lokushisa nakho kuhle kakhulu, kulungele ukusetshenziswa ezindaweni ezibandayo. Kodwa-ke, amandla e-peel namandla okuphuka kwe-polyether TPU abuthakathaka, futhi ukumelana, ukuguga nokukhala kwe-polyether TPU nakho kungaphansi kwalokho kwe-polyester TPU.

Okwesibili, i-polycaprolactone TPU

I-Polycaprolactone (PCL) iyimpahla ye-polymer ekhethekile, kuyilapho i-TPU imfushane nge-thermoplastic polyurethane. Nakuba zombili ziyizinto ze-polymer, i-polycaprolactone ngokwayo akuyona i-TPU. Kodwa-ke, ohlelweni lokukhiqiza lwe-TPU, i-polycaprolactone ingasetshenziswa njengengxenye ebalulekile yengxenye ethambile ukuze isabele nge-isocyanate ukukhiqiza ama-elastomer e-TPU anezici ezinhle kakhulu.

Okwesithathu, ubudlelwano phakathi kwe-polycaprolactone kanyeI-TPU masterbatch

I-Masterbatch idlala indima ebalulekile ekukhiqizweni kwe-TPU. I-Masterbatch iyi-prepolymer ephezulu yokugxila, ngokuvamile eyakhiwe ngezinto ezihlukahlukene ezifana ne-polymer, i-plasticizer, i-stabilizer, njll. Enqubweni yokukhiqiza ye-TPU, i-masterbatch ingasabela nge-chain extender, i-agent e-crosslinking, njll, ukukhiqiza imikhiqizo ye-TPU enezakhiwo ezithile.

Njengento ephezulu yokusebenza kwe-polymer, i-polycaprolactone ivame ukusetshenziswa njengengxenye ebalulekile ye-TPU masterbatch. Ngokulungiswa kwe-polycaprolactone nezinye izingxenye, imikhiqizo ye-TPU enezici ezinhle kakhulu zemishini, ukumelana ne-hydrolysis kanye nokumelana nokushisa okuphansi kungalungiswa. Le mikhiqizo inezinhlobonhlobo zamathemba okufaka isicelo emkhakheni wezingubo ezingabonakali, imishini yezokwelapha, izicathulo zezemidlalo nokunye.

Okwesine, izici kanye nokusetshenziswa kwe-polycaprolactone TPU

I-TPU ye-Polycaprolactone icabangela izinzuzo ze-polyester ne-polyether TPU, futhi inezici ezihlanganisa kangcono. Ayigcini nje ngokuba namandla aphezulu emishini nokumelana nokugqoka, kodwa futhi ikhombisa ukumelana okuhle kwe-hydrolysis kanye nokumelana nokushisa okuphansi. Lokhu kwenza i-polycaprolactone TPU ibe nempilo ende yesevisi nokuzinza ezindaweni eziyinkimbinkimbi nezishintshayo.

Emkhakheni wezingubo ezingabonakali, i-polycaprolactone TPU isiphenduke into ethandwayo ngenxa yezakhiwo zayo ezinhle kakhulu eziphelele. Ingakwazi ukumelana nokuguguleka kwezinto zangaphandle njengemvula ene-asidi, uthuli, ubulongwe bezinyoni, futhi iqinisekise ukusebenza nempilo yezingubo zemoto. Ngaphezu kwalokho, emikhakheni yemishini yezokwelapha, imishini yezemidlalo, njll., i-polycaprolactone TPU nayo ithole ukunakwa okusabalele ngenxa yokuphepha nokuthembeka kwayo.

Ngamafuphi, kunomehluko omkhulu phakathi kwe-TPU polyester kanye ne-polyether ekusebenzeni nasekusetshenzisweni, kuyilapho i-polycaprolactone, njengenye yezingxenye ezibalulekile ze-TPU, inikeza imikhiqizo ye-TPU izici ezinhle kakhulu eziphelele. Ngokuqonda okujulile ubudlelwano nezici phakathi kwalezi zinto zokusebenza, singakhetha kangcono futhi sisebenzise imikhiqizo efanelekile ye-TPU ukuze sihlangabezane nezidingo zezinkambu ezahlukahlukene.