Niki Thermoplastique polyurethane elastomer?

Niki Thermoplastique polyurethane elastomer?

Polyurethane elastomer ni ibikoresho bitandukanye bya sintetike ya polyurethane (ubundi bwoko bwerekeza kuri polyurethane ifuro, polyurethane ifata, polyurethane coating na polyurethane fibre), hamwe na elastomer ya Thermoplastique polyurethane ni bumwe muburyo butatu bwa polyurethane elastomer, Abantu bakunze kwita TPU (Abantu bakunze kwita TPU (Abantu bakunze kwita TPU). ubundi bwoko bubiri bwingenzi bwa polyurethane elastomers baterwa polyurethane elastomers, mu magambo ahinnye nka CPU, hamwe na polyurethane ivanze, ahinnye nka MPU).

TPU ni ubwoko bwa polyurethane elastomer ishobora guhindurwa plastike mugushyushya no gushonga na solvent. Ugereranije na CPU na MPU, TPU ifite bike cyangwa ntibihuza imiti ihuza imiterere yimiti. Urunigi rwarwo rufite umurongo, ariko hariho umubare munini wo guhuza umubiri. Ubu ni Thermoplastique polyurethane elastomer iranga cyane mumiterere.

Imiterere no gutondekanya TPU

Thermoplastique polyurethane elastomer ni (AB) guhagarika umurongo wa polymer. A igereranya polymer polyol (ester cyangwa polyether, uburemere bwa molekile ya 1000 ~ 6000) ifite uburemere buke bwa molekile, bita urunigi rurerure; B igereranya diol irimo atome ya karubone 2-12 igororotse, bita urunigi rugufi.

Mu miterere ya Thermoplastique polyurethane elastomer, igice A cyitwa igice cyoroshye, gifite ibiranga guhinduka no koroshya, bigatuma TPU yaguka; Urunigi rwa urethane rwatewe nigisubizo hagati ya B na isocyanate bita igice gikomeye, gifite ibintu bikomeye kandi bikomeye. Muguhindura igipimo cyibice A na B, ibicuruzwa bya TPU bifite imiterere itandukanye yumubiri nubukanishi.

Ukurikije ibice byoroheje byubatswe, birashobora kugabanywa mubwoko bwa polyester, ubwoko bwa polyether, nubwoko bwa butadiene, burimo ester group, ether group, cyangwa itsinda rya butene. Ukurikije imiterere igoye, irashobora kugabanywa muburyo bwa urethane nubwoko bwa urethane urea, iboneka muburyo bwa Ethylene glycol yagura cyangwa umugozi wa diamine. Ibyiciro rusange bigabanijwemo ubwoko bwa polyester nubwoko bwa polyether.

Nibihe bikoresho fatizo bya synthesis ya TPU?

(1) Polymer Diol

Dirom ya Macromolecular ifite uburemere bwa molekile iri hagati ya 500 na 4000 hamwe nitsinda ryibikorwa, hamwe nibirimo 50% kugeza 80% muri TPU elastomer, igira uruhare rukomeye mumiterere yumubiri na chimique ya TPU.

Polymer Diol ikwiranye na TPU elastomer irashobora kugabanywamo polyester na polyether: polyester irimo polytetramethylene Adipic aside glycol (PBA) ε PCL, PHC; Polyeter zirimo polyoxypropylene ether glycol (PPG), tetrahydrofuran polyether glycol (PTMG), nibindi.

(2) Diisocyanate

Uburemere bwa molekile ni buto ariko imikorere iragaragara, ntabwo igira uruhare gusa rwo guhuza igice cyoroshye nigice gikomeye, ariko kandi igaha TPU nibintu byiza bitandukanye byumubiri nubukanishi. Diisocyanates ikoreshwa kuri TPU ni: Methylene diphenyl diisocyanate (MDI), methylene bis (-4-cyclohexyl isocyanate) (HMDI), p-phenyldiisocyanate (PPDI), 1.5-naphthalene diisocyanate (NDI), p-phenyldimethyl. PXDI), n'ibindi.

(3) Kwagura urunigi

Kwagura urunigi rufite uburemere bwa 100 ~ 350, bwa molekile ntoya ya Diol, uburemere buke bwa molekile, imiterere y'urunigi rufunguye kandi nta tsinda risimburana bifasha kubona ubukana bwinshi n'uburemere bwa scalar ndende ya TPU. Kwagura urunigi bikwiranye na TPU harimo 1,4-butanediol (BDO), 1,4-bis (2-hydroxyethoxy) benzene (HQEE), 1,4-cyclohexanedimethanol (CHDM), p-phenyldimethylglycol (PXG), nibindi.

Guhindura Porogaramu ya TPU nkumukozi ukomeye

Kugirango ugabanye ibiciro byibicuruzwa no kubona imikorere yinyongera, polyurethane thermoplastique elastomers irashobora gukoreshwa nkibikoresho bisanzwe bikoreshwa mugukomeretsa ibikoresho bitandukanye bya termoplastique kandi byahinduwe.

Bitewe na polarite nyinshi, polyurethane irashobora guhuzwa na polarine cyangwa reberi, nka chlorine polyethylene (CPE), ishobora gukoreshwa mugukora ibicuruzwa byubuvuzi; Kuvanga na ABS birashobora gusimbuza injeniyeri ya thermoplastique kugirango ikoreshwe; Iyo ikoreshejwe ifatanije na polyakarubone (PC), ifite ibintu nko kurwanya amavuta, kurwanya lisansi, no kurwanya ingaruka, kandi irashobora gukoreshwa mugukora imibiri yimodoka; Iyo uhujwe na polyester, ubukana bwayo burashobora kunozwa; Mubyongeyeho, irashobora guhuzwa neza na PVC, Polyoxymethylene cyangwa PVDC; Polyester polyurethane irashobora guhuzwa neza na 15% reberi ya Nitrile cyangwa 40% ya nitrile rubber / PVC ivanze; Polyetherthane irashobora kandi guhuzwa neza na 40% ya nitrile rubber / polyvinyl chloride ivanze; Irashobora kandi guhuzwa na acrylonitrile styrene (SAN) copolymers; Irashobora gukora imiyoboro ihuza imiyoboro (IPN) hamwe na polysiloxane ikora. Umubare munini wibintu byavuzwe haruguru bivanze bimaze gukorwa kumugaragaro.

Mu myaka yashize, habaye ubushakashatsi bwiyongera ku gukaza POM na TPU mu Bushinwa. Kuvanga TPU na POM ntabwo bizamura gusa ubushyuhe bwo hejuru hamwe nubukanishi bwa TPU, ahubwo binashimangira cyane POM. Bamwe mu bashakashatsi berekanye ko mu bizamini byavunitse, ugereranije na matrike ya POM, amavuta ya POM hamwe na TPU yavuye mu kuvunika kuvunika akavunika. Kwiyongera kwa TPU kandi biha POM imikorere yibikorwa byo kwibuka. Agace ka kristaline ya POM ikora nkicyiciro cyagenwe cyimiterere yibikoresho byo kwibuka, mugihe akarere ka amorphous ya amorphous TPU na POM ikora nkicyiciro gisubira inyuma. Iyo ubushyuhe bwo gusubiza ubushyuhe ari 165 ℃ naho igihe cyo gukira ni amasegonda 120, igipimo cyo gukira kivanze kigeze hejuru ya 95%, kandi ingaruka zo gukira nibyiza.

TPU iragoye guhuzwa nibikoresho bidafite polimeri nka polyethylene, polypropilene, reberi ya Ethylene propylene, butadiene rubber, isoprene reberi cyangwa ifu ya rubber, kandi ntishobora gukoreshwa kugirango ikore ibihimbano bifite imikorere myiza. Kubwibyo, uburyo bwo kuvura hejuru nka plasma, corona, chimie itose, primer, flame cyangwa gaze reaction ikoreshwa kenshi kubwa nyuma. Kurugero, Isosiyete ikora ibijyanye n’ikirere n’imyuga y'Abanyamerika yakoze F2 / O2 itunganya gazi ikora hejuru yubutaka bwa ultra-high molekile polyethylene ifu nziza ifite uburemere bwa miriyoni 3-5, ikayongera kuri polyurethane elastomer ku kigereranyo cya 10 %, ishobora kuzamura cyane modulus yayo ya Flexural, imbaraga zingana no kwambara birwanya. Kandi F2 / O2 itunganya gazi ikora neza irashobora kandi gukoreshwa kuri fibre ngufi irambuye yerekanwe ifite uburebure bwa 6-35mm, ishobora kunoza ubukana no kurira bikabije.

Nibihe bikoreshwa muri TPU?

Mu 1958, uruganda rukora imiti rwa Goodrich (ubu rwiswe Lubrizol) rwanditse bwa mbere ikirango cya TPU Estane. Mu myaka 40 ishize, ku isi hose habaye amazina arenga 20, kandi buri kirango gifite ibicuruzwa byinshi. Kugeza ubu, inganda zikomeye za TPU ku isi ni: BASF, Covestro, Lubrizol, Huntsman Corporation, McKinsey, Golding, nibindi.

Nka elastomer nziza, TPU ifite ibicuruzwa byinshi byo hepfo, bikoreshwa cyane mubikenerwa bya buri munsi, ibicuruzwa bya siporo, ibikinisho, ibikoresho byo gushushanya, nibindi bice. Hano hari ingero nke.

Materials Ibikoresho by'inkweto

TPU ikoreshwa cyane mubikoresho byinkweto kubera ubuhanga bukomeye kandi birwanya kwambara. Ibicuruzwa byinkweto zirimo TPU biroroshye cyane kwambara kuruta ibicuruzwa byinkweto zisanzwe, bityo bikoreshwa cyane mubicuruzwa byinkweto zo murwego rwohejuru, cyane cyane inkweto za siporo ninkweto zisanzwe.

② Inzu

Bitewe n'ubworoherane, imbaraga nziza, imbaraga zingaruka, hamwe no guhangana nubushyuhe bwo hejuru kandi buke, ama TPU akoreshwa cyane mubushinwa nka gaze na peteroli kubikoresho bya mashini nkindege, tank, imodoka, moto, nibikoresho byimashini.

Cable

TPU itanga amarira, kwihanganira kwambara, hamwe no kugunama, hamwe nubushyuhe bwo hejuru kandi buke aribwo rufunguzo rwimikorere. Ku isoko ry’Ubushinwa rero, insinga zateye imbere nk'insinga zo kugenzura n’insinga z'amashanyarazi zikoresha TPU mu rwego rwo kurinda ibikoresho byo gutwikisha ibishushanyo mbonera bigoye, kandi ibyifuzo byabo bigenda byiyongera.

Devices Ibikoresho byubuvuzi

TPU ni ibikoresho bisimburwa na PVC bifite umutekano, bihamye kandi byujuje ubuziranenge, bitazaba birimo Phthalate n’ibindi bintu byangiza imiti, kandi bizimukira mu maraso cyangwa andi mazi ari muri catheteri y’ubuvuzi cyangwa mu gikapu cy’ubuvuzi kugira ngo bitere ingaruka mbi. Byongeye kandi, icyiciro cyihariye cyo gukuramo no gutera inshinge TPU irashobora gukoreshwa byoroshye hamwe no gukuramo bike mubikoresho bya PVC bihari.

Ibinyabiziga nubundi buryo bwo gutwara abantu

Mugukuramo no gutwikira impande zombi z'igitambaro cya nylon hamwe na polyurethane thermoplastique elastomer, imirwanyasuri yibitero byintambara hamwe nubutasi bwiperereza bitwara abantu 3-15 birashobora gukorwa, hamwe nibikorwa byiza cyane kuruta amabuye ya reberi yanduye; Polyurethane thermoplastique elastomer ikomezwa na fibre yikirahure irashobora gukoreshwa mugukora ibice byumubiri nkibice bibumbabumbwe kumpande zombi zimodoka ubwayo, uruhu rwumuryango, bumpers, imirongo irwanya friction, na grilles.