Umahluko phakathi kwe-TPU Polyetting uhlobo kunye nohlobo lwePolyester

Umahluko phakathiI-TPU POLTERTE Uhlobokwayeuhlobo lwePolyester

I-TPU inokwahlulwa ibe ziindidi ezimbini: uhlobo lwePolyber kunye nohlobo lwePolyester. Ngokweemfuno ezahlukeneyo zezicelo zemveliso, iintlobo ezahlukeneyo ze-TPU kufuneka zikhethwe. Umzekelo, ukuba iimfuno ze-Hydrolysis Ukunganyangeki kuphezulu, uhlobo lwePolyteer Tet ilungele kakhulu kunohlobo lwePolysester TPU.

Ke namhlanje, masithethe ngomahluko phakathiUhlobo lwePolyether Tekwayeuhlobo lwePolyester TPU, kwaye indlela yokwahlula kwabo? Oku kulandelayo kuya kucacisa iinkalo ezine: umahluko kwizinto eziluhlaza, umahluko wesakhiwo, ukuthelekisa intsebenzo, kunye neendlela zokuchonga.

1, umahluko kwizinto eziluhlaza

Ndiyakholelwa ukuba abantu abaninzi bayazi umxholo we-elastovemers ye-thermoplastic, enendawo yesakhiwo equkethe zombini izahlulo ezithambileyo nezinzima, ukuzisa bhetyebhetye kunye nokuqina komxholo.

I-TPU ikwanazo zombini izahlulo ezithambileyo nezinzima, kunye nomahluko phakathi kwePolyteest Chwethe i-TPU kunye nohlobo lwePolyester Chwethe i-TPU ilele umahluko kwizinto ezithambileyo. Siyawubona umahluko kwizinto ezingafunekiyo.

I-Polyteether Tect TPU: 4-4 '- I-Diphantlmethane Diisocyanate (MDI), i-PTOMEG), i-PTOMEG), i-1,4-i-BOEEDIOL (BDO), i-40% ye-MDI, kunye ne-20% ye-BDO.

Uhlobo lwePolyester TPU: 4-4 '- I-Diphantlmethane Diisocyanate (MDI), i-MDI), i-1,4-i-Adipic Acid (i-Adipic Acid malunga ne-35% ye-BDOE malunga ne-25%.

Siyayibona into yokuba izinto ezingafunekiyo ze-polyet cute chankment tink ye-telytahrafuran (ptmeg); Izinto ezingafunekiyo ze-Polyester Chwether phumela i-Adipic Adipid (AA), apho i-Adipic Acid iphinda isebenze nge-volyblene) i-Polybylene ye-Polybylene ikhuphe i-polybylene ikhuphe i-polyblene.

2, Umahluko wesakhiwo

I-molecular thein ye-TPU ine-TORY NE-TORY NOR TEAR SIRROR, apho i-rale yodidi oluphezulu (i-1000-6000) polyester okanye i-polyeether, i-polyether, i-pulyeether, i-Bicteeriol, kunye nesakhiwo sekhemikhali phakathi kwe-ab chain ye-ab chain.

Ngokutsho kwezakhiwo ezahlukeneyo ze-A, i-TPU inokwahlulwa ibe luhlobo lwePolyester, uhlobo lwePolycar, uhlobo lwePolycarboCoCoct, njlboncate, njlbonate, njlbonate.

From the above figure, we can see that the overall molecular chains of polyether type TPU and polyester type TPU are both linear structures, with the main difference being whether the soft chain segment is a polyether polyol or a polyester polyol.

3, Thelekisa intsebenzo

I-Polyether Polyols i-otyrs polymers okanye oolgomers kunye ne-Ether Binds kunye namaqela e-hydroxyl ekugqibeleni kwi-molecular ephambili. Ngenxa yamandla ayo aphantsi anemigca ye-ether kwisakhiwo sayo kunye nokukhululeka kokujikeleza.

Ke ngoko, i-Polyteer TPU ihle kakhulu

Amaqela ka-Ester enamandla aqingqiweyo anobuqili kwiPolyoster Polyols angenza amaqhina e-hydrogen ngamacandelo anzima, asebenza njengeendawo ezinqamlezileyo. Nangona kunjalo, i-polyester inomdla wokuqhawula ngenxa yokuhlaselwa kweemolekyuli zamanzi, kunye ne-acid eyenziwa yi-Hydrolysis inokuchitha i-hydrolylis ye-hydrolysis ye-hyoyerly

Ke ngoko, i-polyester TP ineepropathi ezigqwesileyo, inxibe ukunganyangeki, ukuxhathisa i-Tear, ukumelana nobushushu obuphezulu, kunye nokusebenza lula, kodwa kusetyenzwa ngokulula.

4, Indlela yokuchonga

Njengoko i-TPU ilunge ngakumbi ukuyisebenzisa, inokutshiwo kuphela ukuba ukhetho kufuneka lusekwe kwiimfuno zomzimba zemveliso. Ukufezekisa iipropathi ezintle zoomatshini, sebenzisa i-polyester TPU; Ukuba ucinga ngendleko, ukungcungcutheka, kunye nendawo yokusebenzisa yemveliso, njengokwenza iimveliso zokuzonwabisa kwamanzi, iPolyteer TPU ifanelekile ngakumbi.

Nangona kunjalo, xa ukhetha, okanye ukuxuba ngengozi iintlobo ezimbini zeTPU, azinawo umahluko obalulekileyo ngenkangeleko. Ke kufuneka sihlukane njani?

Kukho iindlela ezininzi, ezinjengemibala yemichiza ye-chromatography-Mass Spectrametry (GCMS), ezi-GCMS), ezi-NJANI. Nangona kunjalo, ezi ndlela zifuna iimfuno zobugcisa eziphezulu kwaye zithathe ixesha elide.

Ngaba ikhona indlela elula neqinileyo yokuchonga? Impendulo ngu-ewe, umzekelo, indlela yokuthelekisa.

Le ndlela ifuna kuphela i-tesster enye. Ukuthatha i-faces-binder yerabha yerabha yerabha kunye nomzekelo, amanyathelo emilinganiselo:

Beka imveliso kwitheyibhile yokulinganisa, bonakalisa ubunzima bemveliso, kwaye cinezela iqhosha lokungena ukuze ukhunjulwe.
Beka imveliso emanzini ukubonisa ixabiso lokuxinana.
Yonke inkqubo yemilinganiselo ithatha malunga nemizuzwana emi-5, kwaye emva koko inokwahlulwa ngokusekwe kumgaqo wokuba ukuxinana kwe-POLYEST Chwethe i-TPUTER i-TPUTER uhlobo lwe-upup. Uluhlu oluthile lobuqhetseba yile: I-Polyteting Tect TPU -1.13-1.18 g / cm3; I-Polyester TPU -1.18-1.22 g / cm3. Le ndlela inokwahlula ngokukhawuleza phakathi kwe-TPU Polyester yohlobo kunye nohlobo lwePolyber.