Udidi: I-Thermoplastic Polyurethane Elastomer

Thermoplastic polyurethane elastomer, eyaziwa ngokuba TPU, luhlobo lwe (AB)n block linear polymer. I-A imele ubunzima obuphezulu be-molecular (1000 ~ 6000) i-polyester okanye i-polyether, kwaye i-B imele i-diol equkethe i-2 ~ 12 i-athomu ye-carbon chain straight. Ubume bekhemikhali phakathi kwamacandelo e-AB yi-disocyanate. Irabha ye-Thermoplastic polyurethane ixhomekeke kwi-intermolecular hydrogen bonding cross-linking okanye i-mild cross-linking phakathi kwamatyathanga e-macromolecular. Ngokunyuka okanye ukuncipha kweqondo lokushisa, ezi zimbini zezakhiwo ezinqamlezileyo zinokubuyisela umva. Kwimeko enyibilikisiweyo okanye isisombululo, amandla e-intermolecular phakathi kweeamolekyuli ziba buthathaka, kwaye emva kokupholisa okanye ukuphuphuma kwe-solvent, amandla anamandla e-intermolecular adibanisa kunye ukubuyisela ukusebenza okuqinileyo kwasekuqaleni. Isiqhelo TPU ibandakanya i-spandex, njl.

Ngcaciso E mfutshane

I-Thermoplastic polyurethane elastomer (TPU) luhlobo lwemathiriyeli e-elastiki enokuthi yenziwe iplastiki ngokufudumeza kwaye inyibilikiswe zizinyibilikisi. Ineempawu ezigqibeleleyo ezibanzi ezinje ngokuqina okuphezulu, ukuqina okuphezulu, ukumelana nokunxiba, kunye nokumelana neoyile, kunye nokusebenza kakuhle kokusebenza. Isetyenziswa kakhulu kumashishini afana nokhuselo lwelizwe, ezonyango, kunye nokutya.

Ngokusebenza kwayo okugqwesileyo kunye nokusetyenziswa okubanzi, i-thermoplastic polyurethane elastomer iye yaba yenye yezinto ezibalulekileyo ze-thermoplastic elastomer. Iimolekyuli zayo zinomgca kwaye zinemichiza encinci okanye azinayo i-cross-linking. Maninzi amakhonkco anqamlezayo enziwe ngamakhonkco e-hydrogen phakathi kwamatyathanga eemolekyuli ze-polyurethane, kwaye iibhondi ze-hydrogen zidlala indima ekomelezeni i-morphology yazo, ngaloo ndlela zinika iipropathi ezininzi ezigqwesileyo ezinje ngemodyuli ephezulu, amandla aphezulu, ukuxhathisa okugqwesileyo, ukumelana neekhemikhali, ukumelana ne-hydrolysis. , ukumelana nokushisa okuphezulu kunye nokuphantsi, kunye nokumelana nokubunjwa. Ezi zakhiwo zibalaseleyo zenza i-thermoplastic polyurethane isetyenziswe ngokubanzi kwiinkalo ezininzi ezifana nezihlangu, iintambo, iimpahla, iimoto, unyango kunye nempilo, imibhobho, iifilimu kunye namaphepha. Imveliso yokugqibela ngokubanzi ayifuni i-vulcanization cross-linking, enokunciphisa umjikelo wokuphendula kunye nokunciphisa ukusetyenziswa kwamandla. Kuba ngokusisiseko sisixhobo sepolymer esinemigca, ubuchwephesha obufanayo kunye nezixhobo njengeeplastiki ze-thermoplastic zingasetyenziselwa ukusetyenzwa, njengokubumba inaliti, i-extrusion, i-blow molding, kunye ne-calendering, ilungele ukuveliswa kobuninzi beendawo eziphakathi kunye nezincinci. Izinto ezilahlwayo zinokuphinda zisetyenziswe kwaye ziphinde zisetyenziswe, kwaye izongezo ezahlukeneyo okanye iifayili zingasetyenziselwa kwimveliso okanye inkqubo yokucubungula ukuphucula iimpawu ezithile zomzimba kunye nokunciphisa iindleko.

uhlelo

I-Thermoplastic polyurethane elastomers inokwahlulwa ibe ziindidi ezimbini: uhlobo lwepolyester kunye nohlobo lwepolyether. Ziyi-white irregular spherical or columnar particlear kunye noxinaniso lwe-1.10 ~ 1.25g / cm3. Ubuninzi obunxulumene nohlobo lwe-polyether luncinci kunohlobo lwe-polyester. Ubushushu beglasi benguqu yohlobo lwepolyether yi-100.6 ~ 106.1 ℃, ngelixa olo hlobo lwepolyester luyi-108.9 ~ 122.8℃. Ubushushu obunqabileyo bezombini i-polyether kunye ne-polyester ingaphantsi kune-62 ℃, kunye nokumelana nobushushu obuphantsi kohlobo lwe-polyether lungcono kunohlobo lwe-polyester.

uphawu

Iimpawu ezibalaseleyo ze-thermoplastic polyurethane elastomers kukunganyangeki okugqwesileyo, ukuxhathisa okuhle kakhulu kwe-ozone, ukuqina okuphezulu, ukomelela okuphezulu, ukuqina okuhle, kunye nokumelana nobushushu obuphantsi. Kananjalo banokunganyangeki kakuhle kweoli, ukuxhathisa imichiza, kunye nokuxhathisa kokusingqongileyo. Kwiindawo ezifumileyo, uzinzo lwe-hydrolysis yohlobo lwe-polyether lungaphezulu kakhulu kunolo lohlobo lwe-polyester.

Ubuchwephesha obutsha kunye nokuSetyenziswa okutsha

TPU lishishini elikhula ngokukhawuleza, elinobuchwepheshe obutsha, iimveliso, kunye nezicelo ezivela rhoqo. TPU isetyenziswe ngokubanzi kumashishini ahlukeneyo, kuquka izihlangu, iimpahla, imibhobho, iifilimu kunye namaphepha, iintambo, iimoto, ukwakhiwa, ukunakekelwa kwezempilo, ukukhusela, kunye nezemidlalo kunye nokuzonwabisa. TPU yamkelwa njengohlaza kunye nohlobo olutsha oluhambelana nokusingqongileyo lwemathiriyeli yepolymer kunye nokusebenza okugqwesileyo. Ngoku, TPU isetyenziswa kakhulu ekusetyenzisweni okuphantsi, ngelixa ukusetyenziswa okuphezulu kulawulwa ziinkampani ezithile zamazwe ngamazwe, kuquka i-Bayer yaseJamani kunye ne-BASF, kunye ne-United States 'Lubrizol kunye ne-Huntsman, eyandisa uphando kunye nemigudu yophuhliso kwiimveliso ezintsha. Ixabiso eliphezulu-longeziwe TPU iimveliso ziphuhliswa rhoqo kwaye zifakwe kwimarike, kwaye TPU imathiriyeli ibe yenye yezona zinto zikhula ngokukhawuleza ze-thermoplastic.

• Izihlangu: iilogo zezihlangu zemidlalo, iikhushini zomoya zezihlangu zemidlalo, izihlangu zokuhamba, iibhutsi zekhephu, izihlangu zegalufa, izityibilizi zomkhenkce, ilaphu kunye nezixhobo zelinen.
• Isinxibo: iibhatyi zokutyibiliza, iibhatyi zemvula, iibhatyi zomoya, iibhatyi ezingangenwa yingqele, iyunifomu yasendle, amadiapers, ibhulukhwe yefiziyoloji, kunye nemathiriyeli edibeneyo yelaphu (engangeni manzi kwaye ephefumla).
• Ezonyango: iigawuni zotyando, iminqwazi, izihlangu, iipadi zasesibhedlele, iingxowa zomkhenkce, amabhandeji, iingxowa zeplasma, amabhandeji otyando, iimaski, kunye nelaphu kunye nemathiriyeli yelinen, ii-airbags zebhedi yotyando.
• Iimveliso zokhuselo: iitanki zamafutha eenqwelo-moya, iifilimu zokugcina izixhobo, iifestile zentente, iingxowa zamanzi zasemkhosini, iibhatyi zobomi, izikhephe ezivuthekayo, kunye nelaphu kunye nemathiriyeli yelaphu, iingxowa zomoya.
• Izixhobo zemidlalo: imiphezulu yebhola ekhatywayo kunye neetyhubhu zangaphakathi, iibhedi ezivuthelwayo, iingxowa zamanzi, iiglavu zokutyibiliza (iingxowa ezingangenwa manzi), iisuti zokuntywila, iibhatyi zokutyibiliza, iimpahla zokuqubha, iskis, iilogo, ii-airbag, ihempe zemidlalo, iimpahla ezibhityileyo, nelaphu kunye nezixhobo zelinen.
• Iimveliso zemizi-mveliso: imiphetho yerabha yedrum yesipikha, imicu yokungangeni manzi, imathiriyeli yokugquma isandi, izinto ezingatshiyo, impahla engatshiyo, ilaphu elingatshiyo, kunye nelaphu kunye nezixhobo ezidityanisiweyo, ucingo kunye nemathiriyeli yentambo yangaphandle.
• Ezinye izinto ezisetyenziswayo: izitshixo zefowuni eziphathwayo, iithoyi zeplastiki ezinokuvutheka, amalaphu ebhedi, amalaphu etafile, iikhethini zeshawa, amalaphu efenitshala, iifaskoti, ipiyano, izitshixo zekhompyutha, iingubo zefilimu, kunye nelaphu kunye nemathiriyeli yelinen.