O le a le Thermoplastic polyurethane elastomer?

O le a le Thermoplastic polyurethane elastomer?

Polyurethane elastomer o se ituaiga polyurethane synthetic mea (isi ituaiga e faasino i polyurethane foam, polyurethane adhesive, polyurethane coating ma polyurethane fiber), ma Thermoplastic polyurethane elastomer o se tasi lea o ituaiga e tolu o polyurethane elastomer, E masani ona taʻua e tagata o le TPU (le isi ituaiga tetele e lua o polyurethane elastomers ua lafo polyurethane elastomers, faapuupuuina o le PPU, ma fefiloi polyurethane elastomers, faapuupuuina o MPU).

TPU o se ituaiga polyurethane elastomer e mafai ona palasitika e ala i le faʻamafanafana ma faʻamavaeina e le solvent. Pe a faatusatusa i le PPU ma le MPU, o le TPU e laʻititi pe leai se vailaʻau faʻafesoʻotaʻi i lona fausaga vailaʻau. O lona filifili mole e matua'i laina, ae o lo'o i ai se aofa'iga o feso'ota'iga fa'aletino. Ole Thermoplastic polyurethane elastomer lea e matua iloga ile fausaga.

Fa'atulagaina ma le fa'avasegaina o TPU

Thermoplastic polyurethane elastomer o se (AB) poloka laina polymer. A o loʻo faʻatusalia se polymer polyol (ester poʻo polyether, mamafa mole o le 1000 ~ 6000) ma le mamafa mole mole maualuga, e taʻua o filifili umi; B o lo'o fa'atusalia se diol o lo'o i ai 2-12 filifili sa'o kaponi atoma, ta'ua o le filifili pupuu.

I le fausaga o le Thermoplastic polyurethane elastomer, o le vaega A e taʻua o le vaega vaivai, o loʻo i ai uiga o le fetuutuunai ma le vaivai, o le TPU e faʻalauteleina; O le filifili urethane e mafua mai i le tali i le va o le vaega B ma le isocyanate e taʻua o se vaega faigata, lea e iai uma mea maʻaʻa ma malosi. E ala i le fetuutuunai o le fua faatatau o vaega A ma le B, o oloa TPU e iai mea faʻaletino ma masini eseese e faia.

E tusa ai ma le fausaga vaega vaivai, e mafai ona vaevaeina i le ituaiga polyester, ituaiga polyether, ma le ituaiga butadiene, lea e aofia ai vaega ester, vaega ether, po o le vaega butene. E tusa ai ma le fausaga vaega faigata, e mafai ona vaevaeina i ituaiga urethane ma urethane urea ituaiga, lea e maua mai le ethylene glycol filifili extenders po o le filifili filifili diamine. O le faʻavasegaga masani e vaevaeina i le polyester type ma polyether type.

O a meafaitino mo le fa'aogaina o le TPU?

(1) Polymer Diol

Macromolecular diol ma le mamafa mole e amata mai i le 500 i le 4000 ma vaega bifunctional, faatasi ai ma le anotusi o le 50% i le 80% i le TPU elastomer, o loʻo i ai se sao taua i le tino ma vailaʻau o le TPU.

O le polymer Diol talafeagai mo le TPU elastomer e mafai ona vaevaeina i polyester ma polyether: polyester e aofia ai polytetramethylene Adipic acid glycol (PBA) ε PCL, PHC; Polyethers e aofia ai polyoxypropylene ether glycol (PPG), tetrahydrofuran polyether glycol (PTMG), ma isi.

(2) Diisocyanate

O le mamafa o le molecular e laʻititi ae o le galuega e mataʻina, e le gata o le faʻaogaina o le vaega vaivai ma le vaega faigata, ae faʻapipiʻiina foi le TPU ma le tele o mea lelei faaletino ma masini. O diisocyanates e fa'atatau i le TPU o: Methylene diphenyl diisocyanate (MDI), methylene bis (-4-cyclohexyl isocyanate) (HMDI), p-phenyldiisocyanate (PPDI), 1,5-naphthalene diisocyanate (NDI), p-phenyldimethyl diisocyanate ( PXDI), ma isi.

(3) Fa'alautele filifili

O le faʻalauteleina o le filifili ma le mamafa o le molecular o le 100 ~ 350, o loʻo i totonu o le Diol mole mole, laʻititi laʻititi laʻititi, faʻapipiʻi filifili tatala ma leai se vaega e suitulaga e faʻamalosia i le mauaina o le maualuga maualuga ma le maualuga o le mamafa o le TPU. O le faʻalauteleina o filifili e talafeagai mo le TPU e aofia ai le 1,4-butanediol (BDO), 1,4-bis (2-hydroxyethoxy) benzene (HQEE), 1,4-cyclohexanedimethanol (CHDM), p-phenyldimethylglycol (PXG), ma isi.

Suiga Talosaga o le TPU e fai ma Sui Toughening

Ina ia faʻaitiitia le tau o oloa ma maua ai faʻatinoga faʻaopoopo, e mafai ona faʻaogaina polyurethane elastomers thermoplastic e masani ona faʻaaogaina faʻamalosi faʻamalosi e faʻamalosi ai le tele o mea paʻu ma faʻaleleia.

Ona o le maualuga o le polarity, polyurethane e mafai ona fetaui ma resini polar poʻo paʻu, e pei o le chlorinated polyethylene (CPE), lea e mafai ona faʻaaogaina e fai ai mea faʻafomaʻi; O le fa'afefiloi ma le ABS e mafai ona suitulaga fa'ainisinia thermoplastics mo le fa'aoga; Pe a faʻaaogaina faʻatasi ma le polycarbonate (PC), o loʻo i ai mea totino e pei o le suauʻu, faʻafefeteina o le suauu, ma le aʻafiaga o aʻafiaga, ma e mafai ona faʻaaogaina e fai ai tino o taavale; Pe a tuʻufaʻatasia ma le polyester, e mafai ona faʻaleleia lona malosi; E le gata i lea, e mafai ona fetaui lelei ma le PVC, Polyoxymethylene poʻo le PVDC; Polyester polyurethane e mafai ona fetaui lelei ma le 15% Nitrile pa'u po'o le 40% nitrile pa'u/PVC fa'afefiloi; Polyether polyurethane e mafai foi ona fetaui lelei ma le 40% nitrile pa'u/polyvinyl chloride fa'afefiloi fa'apipi'i; E mafai fo'i ona fa'atasi ma acrylonitrile styrene (SAN) copolymers; E mafai ona fausia ai fesoʻotaʻiga fesoʻotaʻiga (IPN) faʻatasi ma polysiloxanes faʻafefe. O le tele o mea fa'apipi'i fa'afefiloi ua ta'ua i luga ua mae'a ona gaosia aloaia.

I tausaga talu ai nei, o loʻo faʻateleina suʻesuʻega i le faʻamalosia o le POM e le TPU i Saina. O le faʻafefiloi o le TPU ma le POM e le gata e faʻaleleia ai le maualuga o le vevela ma mea faʻainisinia o le TPU, ae faʻamalosia tele foi le POM. O nisi tagata suʻesuʻe ua faʻaalia i suʻega gau gau, faʻatusatusa i le POM matrix, o le POM alloy ma le TPU ua suia mai le gau gau i le gau gau. O le faʻaopoopoga o le TPU e faʻatagaina ai foi le POM ma le faʻatinoga o mafaufauga. O le vaega tioata o le POM o loʻo avea ma vaega tumau o le faʻaogaina o foliga manatua, ae o le vaega amorphous o le TPU ma le POM o loʻo avea ma vaega e mafai ona faʻaaogaina. Pe a oʻo i le 165 ℃ le vevela o le tali toe faʻaleleia ma o le taimi e toe faʻaleleia ai e 120 sekone, o le toe faʻaleleia o le uʻamea e oʻo atu i le 95%, ma o le toe faʻaleleia e sili ona lelei.

TPU e faigata ona fetaui ma mea e le-polar polymer e pei ole polyethylene, polypropylene, Ethylene propylene rubber, pa'u butadiene, pa'u isoprene po'o le pa'u otaota otaota, ma e le mafai ona fa'aogaina e gaosia ai mea fa'apipi'i ma lelei le fa'atinoga. O le mea lea, e masani ona faʻaaogaina auala faʻapitoa e pei o le plasma, corona, Wet chemistry, primer, mumu poʻo le gas reactive mo le mea mulimuli. Mo se faʻataʻitaʻiga, o le American Air Products and Chemicals Company ua faʻatinoina F2 / O2 faʻaogaina o le kasa i luga o le kasa i luga o le ultra-high molecular weight polyethylene fine powder ma le mamafa mole mole o le 3-5 miliona, ma faʻaopoopo i le polyurethane elastomer i le fua faatatau o le 10. %, lea e mafai ona faʻaleleia atili lona faʻaogaina o le Flexural modulus, malosi faʻamalosi ma teteʻe faʻaofuofu. Ma o le F2 / O2 kesi galue i luga o le togafitiga e mafai foi ona faʻaaogaina i alava pupuu faʻalautele faʻasolosolo faʻatasi ma le umi o le 6-35mm, lea e mafai ona faʻaleleia atili ai le maaa ma loimata o le mea faʻapipiʻi.

O a vaega fa'aoga o le TPU?

I le 1958, Goodrich Chemical Company (lea ua toe faaigoa nei Lubrizol) na resitalaina le TPU brand Estane mo le taimi muamua. I le 40 tausaga ua tuanaʻi, ua silia ma le 20 igoa faʻailoga i le lalolagi atoa, ma o faʻailoga taʻitasi e iai le tele o faʻasologa o oloa. I le taimi nei, o le TPU autu gaosi oloa i le lalolagi o: BASF, Covestro, Lubrizol, Huntsman Corporation, McKinsey, Golding, ma isi.

I le avea ai o se elastomer sili ona lelei, o le TPU o loʻo i ai le tele o oloa i lalo, lea e faʻaaogaina lautele i mea e manaʻomia i aso uma, mea taʻaloga, meataalo, mea teuteu, ma isi fanua. Lalo o nai faʻataʻitaʻiga.

① Mea e fai seevae

E masani ona faʻaaogaina le TPU mo mea seevae ona o lona faʻalelei lelei ma le faʻaogaina o le teteʻe. O seevae seevae o loʻo i ai le TPU e sili atu le faʻalelei e ofuina nai lo mea masani seevae, o lea e sili atu ona faʻaaogaina i oloa seevae maualuga, aemaise lava o seevae taʻaloga ma seevae masani.

② Fa'agaau

Ona o lona vaivai, malosi malosi, malosi o le aʻafiaga, ma le tetee atu i le maualuga ma le maualalo o le vevela, o faʻauʻu TPU o loʻo faʻaaogaina lautele i Saina e pei o kesi ma suauu mo masini masini e pei o vaalele, tane, taavale, uila afi, ma masini masini.

③ Uaea

O le TPU e maua ai le tete'e o loimata, tete'e o ofu, ma uiga punou, ma le maualuga ma le maualalo o le vevela o le ki lea i le fa'atinoga o le uaea. O lea la i le maketi a Saina, o uaea faʻapitoa e pei o uaea faʻatonutonu ma uaea eletise e faʻaogaina ai TPU e puipuia ai mea faʻapipiʻi o mamanu faʻalavelave lavelave, ma ua faʻateleina a latou talosaga.

④ Mea fa'afoma'i

O le TPU o se mea e suitulaga i le PVC saogalemu, mautu ma maualuga, lea o le a le aofia ai le Phthalate ma isi vailaʻau faʻamaʻi, ma o le a alu atu i le toto poʻo isi vai i totonu o le fomaʻi poʻo le ato faʻafomaʻi e mafua ai aʻafiaga. E le gata i lea, e mafai ona faigofie ona faʻaogaina le TPU faʻapipiʻi faʻapitoa faʻapitoa ma le tui faʻapipiʻi faʻatasi ma sina faʻapipiʻi i totonu o meafaigaluega PVC.

⑤ Taavale ma isi auala felauaiga

E ala i le extruding ma ufiufi itu uma e lua o le ie nailon i polyurethane thermoplastic elastomer, inflatable taua osofaʻiga vaʻa ma vaʻavaʻai vaʻavaʻa ave 3-15 tagata e mafai ona faia, ma sili atu le faatinoga nai lo vulcanized paʻu inflatable rafts; Polyurethane thermoplastic elastomer e fa'amalosia i le alava tioata e mafai ona fa'aogaina e fai ai vaega o le tino e pei o vaega fa'ameamea i itu uma e lua o le ta'avale lava ia, pa'u o le faitoto'a, pa'u, fasi pepa fa'afefe, ma grilles.