Qeb: Thermoplastic Polyurethane Elastomer

Thermoplastic polyurethane elastomer, tseem hu ua TPU, yog hom (AB)n block linear polymer. A sawv cev rau qhov hnyav molecular (1000 ~ 6000) polyester lossis polyether, thiab B sawv cev rau diol uas muaj 2 ~ 12 ncaj saw carbon atoms. Cov qauv tshuaj ntawm AB ntu yog diisocyanate. Thermoplastic polyurethane roj hmab tso siab rau ntawm intermolecular hydrogen bonding cross-linking lossis me me cross-linking ntawm macromolecular chains. Nrog rau qhov nce lossis txo qis ntawm qhov kub thiab txias, ob qho kev sib txuas sib txuas no muaj kev thim rov qab. Nyob rau hauv lub xeev molten los yog lub xeev daws teeb meem, lub zog intermolecular ntawm molecules tsis muaj zog, thiab tom qab txias los yog hnyav evaporation, muaj zog intermolecular quab yuam txuas lawv ua ke los kho cov khoom qub. Hom TPU suav nrog spandex, thiab lwm yam.

Luv Lus Qhia Txog

Thermoplastic polyurethane elastomer (TPU) yog ib hom khoom siv elastic uas tuaj yeem ua yas los ntawm cua sov thiab yaj los ntawm cov kuab tshuaj. Nws muaj cov khoom zoo heev xws li lub zog siab, siab toughness, hnav tsis kam, thiab roj tsis kam, nrog rau kev ua haujlwm zoo. Nws yog dav siv hauv kev lag luam xws li kev tiv thaiv hauv tebchaws, kev kho mob, thiab zaub mov.

Nrog nws cov kev ua tau zoo heev thiab kev siv dav, thermoplastic polyurethane elastomer tau dhau los ua ib qho tseem ceeb ntawm cov ntaub ntawv thermoplastic elastomer. Nws cov molecules yog cov kab ncaj nraim thiab muaj me me lossis tsis muaj tshuaj sib txuas. Muaj ntau qhov sib txuas ntawm lub cev muaj xws li hydrogen bonds ntawm linear polyurethane molecular chains, thiab hydrogen bonds ua lub luag haujlwm hauv kev ntxiv dag zog rau lawv cov morphology, yog li endowing ntau yam zoo heev xws li siab modulus, siab zog, zoo heev hnav tsis kam, tshuaj tiv thaiv, hydrolysis kuj. , siab thiab tsis kub tsis kam, thiab pwm kuj. Cov khoom zoo heev no ua rau cov thermoplastic polyurethane siv dav hauv ntau qhov chaw xws li khau, cables, khaub ncaws, tsheb, kev kho mob thiab kev noj qab haus huv, kav dej, zaj duab xis, thiab cov ntawv txheeb. Cov khoom kawg feem ntau tsis tas yuav vulcanization cross-linking, uas tuaj yeem ua rau luv luv lub voj voog cov tshuaj tiv thaiv thiab txo kev siv zog. Txij li thaum nws yog ib qho qauv linear polymer, tib lub thev naus laus zis thiab cov khoom siv thermoplastic plastics tuaj yeem siv rau kev ua, xws li txhaj tshuaj molding, extrusion, tshuab moulding, thiab calendering, tshwj xeeb tshaj yog tsim rau huab hwm coj ntau ntawm nruab nrab thiab me me. Cov ntaub ntawv pov tseg tuaj yeem siv rov ua dua thiab rov siv dua, thiab cov khoom siv sib txawv lossis cov khoom ntim tuaj yeem siv rau hauv kev tsim khoom lossis kev ua haujlwm los txhim kho qee yam ntawm lub cev thiab txo cov nqi.

Classification

Thermoplastic polyurethane elastomers tuaj yeem muab faib ua ob hom: polyester hom thiab polyether hom. Lawv yog cov dawb irregular kheej kheej los yog columnar hais nrog ib tug ceev ntawm 1.10 ~ 1.25g / cm3. Cov txheeb ze ntom ntom ntawm polyether yog me dua li ntawm polyester hom. Cov iav hloov pauv kub ntawm polyether hom yog 100.6 ~ 106.1 ℃, thaum cov polyester hom yog 108.9 ~ 122.8 ℃. Qhov kub thiab txias ntawm ob hom polyether thiab polyester yog qis dua -62 ℃, thiab qhov kub tsis kam ntawm polyether hom yog zoo dua li ntawm polyester hom.

Yam ntxwv

Cov yam ntxwv zoo ntawm thermoplastic polyurethane elastomers yog cov hnav tsis kam, zoo heev ozone kuj, siab hardness, siab zog, zoo elasticity, thiab kub tsis kam. Lawv kuj muaj cov roj ua haujlwm zoo, tshuaj lom neeg ua haujlwm, thiab kev tiv thaiv ib puag ncig. Nyob rau hauv qhov chaw ntub dej, qhov kev ruaj ntseg hydrolysis ntawm polyether yog deb tshaj li ntawm polyester hom.

Cov thev naus laus zis tshiab thiab siv tshiab

TPU yog ib qho kev lag luam loj hlob sai, nrog cov thev naus laus zis tshiab, cov khoom lag luam, thiab cov ntawv thov tshwm sim tas li. TPU tau siv dav hauv ntau yam lag luam, suav nrog khau, khaub ncaws, kav dej, zaj duab xis thiab cov ntawv txheeb, cables, tsheb, kev tsim kho, kev kho mob, kev tiv thaiv, thiab kev ua si thiab kev lom zem. TPU tau lees paub tias yog ntsuab thiab ib puag ncig tus phooj ywg hom tshiab ntawm cov khoom siv polymer nrog kev ua tau zoo heev. Tam sim no, TPU Feem ntau yog siv rau hauv kev siv qis kawg nkaus, thaum kev noj haus siab kawg yog tswj hwm los ntawm qee lub tuam txhab sib txawv, suav nrog lub teb chaws Yelemees Bayer thiab BASF, thiab Tebchaws Meskas Lubrizol thiab Huntsman, uas tau nce lawv cov kev tshawb fawb thiab kev loj hlob ntawm cov khoom tshiab. Muaj nuj nqis ntxiv TPU cov khoom yog tas li tsim thiab muab tso rau hauv kev ua lag luam, thiab TPU cov ntaub ntawv tau dhau los ua ib qho ntawm cov khoom siv thermoplastic loj tshaj plaws.

• Cov khau khau: cov khau kis las ncaws pob, khau kis las huab cua cushions, khau hiking, khau boots, khau golf, ice skates, thiab ntaub thiab cov ntaub ntawv hauv ob sab phlu.
• Khaub ncaws: caij ski tsho, raincoats, windbreakers, tsho tiv no txias, tsho tiv no, pawm, physiological ris, thiab ntaub composite ntaub ntawv (waterproof thiab breathable).
• Kev kho mob: cov ris tsho phais, lub kaus mom, khau, cov ntaub qhwv hauv tsev kho mob, cov hnab ntim dej khov, cov ntaub qhwv lub hnab, cov hnab yas, cov ntaub qhwv phais, lub qhov ncauj qhov ntswg, thiab cov ntaub thiab cov ntaub ntawv hauv ob sab phlu, phais txaj airbags.
• Cov khoom siv tiv thaiv: aircraft roj tso tsheb hlau luam, riam phom cia zaj duab xis, lub tsev pheeb suab qhov rais, tub rog lub hnab dej, lub tsho cawm siav, lub nkoj ua pa, thiab cov ntaub thiab cov ntaub ntawv hauv ob sab phlu, airbags.
• Cov khoom siv ua kis las: ncaws pob thiab cov raj sab hauv, lub txaj txaj, lub hnab ntim dej, hnab looj tes caij ski (lub hnab tsis muaj dej), cov ris tsho dhia dej, caij ski tsho, swimsuits, skis, logos, airbags, tsho ncaws pob, slimming khaub ncaws, thiab cov ntaub ntawv hauv ob sab phlu.
• Cov khoom lag luam: hais lus nruas ntawv roj hmab npoo, cov ntaub ntawv tsis muaj dej tsis zoo, cov khoom siv suab rwb thaiv tsev, cov khoom siv hluav taws xob, cov khaub ncaws tsis zoo, cov ntaub ntawv siv hluav taws xob, thiab cov ntaub ntawv thiab cov ntaub ntawv hauv ob sab phlu, cov ntaub ntawv xov hlau thiab cable sab nraud.
• Lwm yam kev siv: cov xov tooj ntawm tes, cov khoom ua si yas, cov ntaub pua tsev, cov ntaub pua rooj, cov ntaub da dej, cov rooj tog zaum ntaub, aprons, pianos, khoos phis tawj keyboards, zaj duab xis txheej, thiab ntaub thiab cov ntaub ntawv hauv ob sab phlu.