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, e faʻateleina ai le TPU;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 TPU fa'asologa?

(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 mole mole e laʻititi ae o le galuega e mataʻina, e le gata o loʻo taʻalo le sao o le faʻafesoʻotaʻi o le vaega vaivai ma le vaega faigata, ae faʻapea foʻi ona tuʻuina atu le TPU i le tele o mea faʻaletino 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, ua 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.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 tele 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 oloa 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 togi ma sina faʻapipiʻiina i mea faigaluega 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.