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-polyester

I-thermoplastic polyurethane (TPU) uhlobo lwezinto ze-elastomer ezisebenza kahle kakhulu, ezisetshenziswa kabanzi emikhakheni eyahlukene. Ngokwesakhiwo esihlukile sengxenye yayo ethambile, i-TPU ingahlukaniswa ngohlobo lwe-polyester kanye nohlobo lwe-polyether. Kunomehluko omkhulu ekusebenzeni nasekusetshenzisweni phakathi kwalezi zinhlobo ezimbili.

I-Polyester TPU inamandla aphezulu kanye nokumelana nokuguguleka, izakhiwo zokuthamba, izakhiwo zokugoba kanye nokumelana nesinyibilikisi kuhle kakhulu. Ngaphezu kwalokho, inokumelana okuhle nokushisa okuphezulu futhi ifanele ukusetshenziswa ezindaweni ezinokushisa okuphezulu. Kodwa-ke, ukumelana ne-hydrolysis ye-polyester TPU kuphansi kakhulu, futhi kulula ukungenwa ama-molecule amanzi kanye nokuqhekeka.

Ngokungqubuzanayo,i-TPU ye-polyetheryaziwa ngamandla ayo aphezulu, ukumelana ne-hydrolysis kanye nokuqina okuphezulu. Ukusebenza kwayo okuphansi kwezinga lokushisa nakho kuhle kakhulu, kufanelekile ukusetshenziswa ezindaweni ezibandayo. Kodwa-ke, amandla okuqhekeka kanye namandla okuqhekeka kwe-polyether TPU kubuthakathaka kakhulu, kanti ukumelana nokudonseka, ukuguguleka nokuklebhuka kwe-polyether TPU nakho kungaphansi kokwe-polyester TPU.

Okwesibili, i-polycaprolactone TPU

I-Polycaprolactone (PCL) iyinto ekhethekile ye-polymer, kanti i-TPU ifushaniswa ne-thermoplastic polyurethane. Nakuba zombili ziyizinto ze-polymer, i-polycaprolactone ngokwayo ayiyona i-TPU. Kodwa-ke, enqubweni yokukhiqiza ye-TPU, i-polycaprolactone ingasetshenziswa njengengxenye ebalulekile yesigaba esithambile ukuze isabela nge-isocyanate ukukhiqiza ama-elastomer e-TPU anezakhiwo ezinhle kakhulu.

Okwesithathu, ubudlelwano phakathi kwe-polycaprolactone kanyeI-TPU masterbatch

I-Masterbatch idlala indima ebalulekile ekukhiqizweni kwe-TPU. I-Masterbatch iyi-prepolymer enokuhlushwa okuphezulu, evame ukwakhiwa yizingxenye ezahlukahlukene njenge-polymer, i-plasticizer, i-stabilizer, njll. Enqubweni yokukhiqiza ye-TPU, i-masterbatch ingasabela nge-chain extender, i-agent yokuxhumanisa, njll., ukukhiqiza imikhiqizo ye-TPU enezakhiwo ezithile.

Njengezinto ze-polymer ezisebenza kahle kakhulu, i-polycaprolactone ivame ukusetshenziswa njengengxenye ebalulekile ye-TPU masterbatch. Ngokusebenzisa i-prepolymerization ye-polycaprolactone nezinye izingxenye, imikhiqizo ye-TPU enezakhiwo ezinhle kakhulu zemishini, ukumelana ne-hydrolysis kanye nokumelana nokushisa okuphansi ingalungiswa. Le mikhiqizo inezinhlobo eziningi zamathemba okusetshenziswa emikhakheni yezingubo ezingabonakali, imishini yezokwelapha, izicathulo zezemidlalo njalo njalo.

Okwesine, izici kanye nokusetshenziswa kwe-polycaprolactone TPU

I-Polycaprolactone TPU icabangela izinzuzo ze-polyester kanye ne-polyether TPU, futhi inezakhiwo eziphelele ezingcono. Ayigcini nje ngokuba namandla aphezulu okusebenza kanye nokumelana nokuguguleka, kodwa futhi ikhombisa ukumelana okuhle kwe-hydrolysis kanye nokumelana nokushisa okuphansi. Lokhu kwenza i-polycaprolactone TPU ibe nokuphila isikhathi eside kwenkonzo kanye nokuqina ezindaweni eziyinkimbinkimbi nezishintshashintshayo.

Emkhakheni wezingubo ezingabonakali, i-polycaprolactone TPU isibe yinto ethandwayo ngenxa yezakhiwo zayo ezinhle kakhulu eziphelele. Ingamelana nokuguguleka kwezinto zangaphandle njengemvula ene-asidi, uthuli, indle yezinyoni, futhi iqinisekise ukusebenza nokuphila kwezingubo zemoto. Ngaphezu kwalokho, emikhakheni yamadivayisi ezokwelapha, imishini yezemidlalo, njll., i-polycaprolactone TPU nayo ithole ukunakwa kabanzi ngokuphepha kwayo nokuthembeka kwayo.

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