Farqiga u dhexeeya TPU polyester iyo polyeter, iyo xiriirka ka dhexeeya polycaprolactone iyo TPU

Farqiga u dhexeeya TPU polyester iyo polyeter, iyo xiriirka ka dhexeeyapolycaprolactone TPU

Marka hore, farqiga u dhexeeya TPU polyester iyo polyeter

Thermoplastic polyurethane (TPU) waa nooc ka mid ah walxaha elastomer ee waxqabadka sare leh, kaas oo si weyn loogu isticmaalo meelo kala duwan. Marka loo eego qaab dhismeedka kala duwan ee qaybteeda jilicsan, TPU waxaa loo qaybin karaa nooca polyesterka iyo nooca polyetherka. Waxaa jira farqi weyn oo u dhexeeya waxqabadka iyo adeegsiga labada nooc.

Polyester TPU waxay leedahay xoog sare oo xirto caabbinta, guryaha xajinta, guryaha foorarsiga iyo caabbinta dareeraha ayaa aad u wanaagsan. Intaa waxaa dheer, waxay leedahay iska caabin heerkul sare oo wanaagsan waxayna ku habboon tahay codsiyada jawiga heerkulka sare. Si kastaba ha ahaatee, iska caabinta hydrolysis ee TPU polyester-ka ayaa ah mid aad u liidata, wayna fududahay in lagu soo duulo molecules biyaha iyo jabka.

Taas beddelkeeda,polyeter TPUwaxaa lagu yaqaanaa xoog badan, caabbinta hydrolysis iyo adkeysi sare. Waxqabadkeeda heerkulka hooseeya sidoo kale waa mid aad u wanaagsan, oo ku habboon in loo isticmaalo jawi qabow. Si kastaba ha ahaatee, xoogga diirka iyo xoogga jabka ee polyether-ka TPU waa kuwo daciif ah, iyo adkaysiga, xirashada iyo jeexjeexyada polyether-ka TPU ayaa sidoo kale ka hooseeya kan TPU polyesterka.

Marka labaad, polycaprolactone TPU

Polycaprolactone (PCL) waa maaddo polymer gaar ah, halka TPU ay gaaban tahay poliurethane heerkulbeeg ah. Inkasta oo ay labaduba yihiin qalab polymer ah, polycaprolactone lafteedu maaha TPU. Si kastaba ha ahaatee, habka wax soo saarka ee TPU, polycaprolactone waxaa loo isticmaali karaa qayb muhiim ah oo ka mid ah qaybaha jilicsan si ay ula falgalaan isocyanate si ay u soo saaraan TPU elastomers oo leh sifooyin aad u fiican.

Saddex, xidhiidhka ka dhexeeya polycaprolactone iyoTusmada ugu hooseysa ee TPU

Masterbatch waxay door muhiim ah ka ciyaartaa wax soo saarka TPU. Masterbatch waa prepolymer-fiirsashada sare, sida caadiga ah waxay ka kooban tahay qaybo kala duwan sida polymer, plasticizer, stabilizer, iwm. In habka wax soo saarka ee TPU, masterbatch ka falcelin kartaa silsilad fidiyaha, wakiilka crosslinking, iwm, si ay u soo saaraan alaabta TPU leh sifooyin gaar ah.

Maaddaama wax-qabad sarreeya oo polymer ah, polycaprolactone waxaa badanaa loo isticmaalaa qayb muhiim ah oo ka mid ah TPU masterbatch. By prepolymerization of polycaprolactone oo leh qaybo kale, alaabooyinka TPU oo leh sifooyin farsamo oo aad u fiican, iska caabbinta hydrolysis iyo iska caabinta heerkulka hooseeya ayaa la diyaarin karaa. Alaabooyinkani waxay leeyihiin fursado badan oo codsi ah oo ku saabsan dhinacyada dharka aan la arki karin, qalabka caafimaadka, kabaha ciyaaraha iyo wixii la mid ah.

Afar, sifooyinka iyo codsiyada polycaprolactone TPU

Polycaprolactone TPU waxay ku xisaabtantaa faa'iidooyinka polyesterka iyo polyetherka TPU, waxayna leedahay sifooyin dhammaystiran oo wanaagsan. Ma aha oo kaliya inay leedahay xoog farsamo sare leh iyo xirashada caabbinta, laakiin sidoo kale waxay muujinaysaa caabbinta hydrolysis wanaagsan iyo iska caabin heerkul hooseeya. Tani waxay ka dhigaysaa polycaprolactone TPU inay lahaato nolol adeeg oo dheer iyo xasilooni jawi adag oo isbedeli karo.

Goobta dharka aan la arki karin, polycaprolactone TPU waxay noqotay maadada la doorbido sababtoo ah sifooyin dhamaystiran oo heer sare ah. Waxay u adkeysan kartaa nabaad-guurka arrimaha dibadda sida roobka aashitada, boodhka, xadhkaha shimbiraha, waxayna hubisaa waxqabadka iyo nolosha dharka baabuurka. Intaa waxaa dheer, dhinacyada qalabka caafimaadka, qalabka isboortiga, iwm, polycaprolactone TPU ayaa sidoo kale heshay fiiro gaar ah oo loogu talagalay badbaadada iyo kalsoonida.

Marka la soo koobo, waxaa jira farqi weyn oo u dhexeeya TPU polyester iyo polyether ee waxqabadka iyo codsiga, halka polycaprolactone, oo ah mid ka mid ah qaybaha muhiimka ah ee TPU, ayaa siinaya alaabooyinka TPU siyaalo dhammaystiran oo heer sare ah. Iyadoo si qoto dheer loo fahmo cilaaqaadka iyo sifooyinka ka dhexeeya alaabtan, waxaan si fiican u dooran karnaa oo codsan karnaa alaabta TPU ee ku habboon si loo daboolo baahiyaha dhinacyada kala duwan.