Kev Taw Qhia Txog Hydrolysis Resistance Parameters ntawm TPU Cov Khoom Siv

Kev tsis kam hydrolysis ntawm TPUhais txog nws lub peev xwm los tiv thaiv "kev tawm tsam" los ntawm cov dej noo thiab tiv thaiv kev ua haujlwm poob qis. Lub peev xwm no yog txiav txim siab los ntawm cov qauv tshuaj lom neeg thiab cov khoom ntxiv ntawm TPU, thiab yog qhov qhia tseem ceeb rau kev ntsuam xyuas nws qhov kev ntseeg siab mus sij hawm ntev hauv cov av noo lossis hauv qab dej.

Qhov Txiav Txim Siab: Polyester-based vs.TPU raws li Polyether

Qhov sib txawv tseem ceeb hauv kev tiv thaiv hydrolysis los ntawm cov qauv "mos mos" hauv cov saw hlau molecular.

• TPU ua los ntawm Polyester: Cov ester bonds hauv cov saw molecular yooj yim rau hydrolysis, ua rau kev ua haujlwm poob qis hauv qhov chaw kub thiab noo noo. Yog li ntawd, nws tsis tshua muaj kev tiv thaiv hydrolysis.
• TPU ua los ntawm Polyether: Cov ether bonds hauv cov saw molecular ruaj khov thiab tiv taus hydrolysis, muab kev tiv thaiv hydrolysis zoo heev. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv hauv qab dej lossis cov dej noo siab.

Hauv ntej: Rau cov ntawv thov uas xav tau kev sib cuag ntev nrog dej lossis cov chaw noo noo, polyether-based TPU yuav tsum tau muab qhov tseem ceeb.

Cov Cim Qhia Txog Kev Ntsuam Xyuas Tseem Ceeb

Kev tiv thaiv hydrolysis feem ntau yog soj ntsuam los ntawm kev kuaj xyuas kev laus sai, tsom mus rau cov yam ntxwv tseem ceeb hauv qab no:

• Qhov Kev Khaws Cia Lub Zog Tensile: Feem pua ​​ntawm lub zog tensile uas khaws cia tom qab laus piv rau tus nqi qub. Kev khaws cia siab dua qhia tau tias muaj kev tiv thaiv hydrolysis zoo dua; kev lag luam feem ntau xav tau ≥80%.
• Kev Hloov Pauv ntawm Kev Ntev Thaum Tawg: Ntsuas qhov kev hloov pauv ntawm kev ywj pheej ntawm cov khoom siv. Kev hloov me me qhia txog kev ua tau zoo ruaj khov dua.
• Kev Hloov Pauv ntawm Qhov Nyuaj: Qhia txog kev hloov pauv ntawm qhov nyuaj ntawm qhov chaw. Kev hloov me me qhia txog kev ruaj khov zoo dua ntawm cov khoom loj.
• Pom Kev Zoo: Saib seb qhov chaw ntawm cov qauv puas muaj cov cim qhia txog kev puas tsuaj xws li tawg, ua pob, lossis pleev xim av.

Cov Txheej Txheem Xeem thiab Cov Qauv

Kev tiv thaiv hydrolysis raug soj ntsuam los ntawm kev sim kev laus sai. Cov qauv tseem ceeb suav nrog:

• ISO 4611: Tus qauv thoob ntiaj teb rau kev laus ntawm cov yas.
• ASTM D570: Txoj kev xeem txheem rau kev nqus dej ntawm cov yas.
• DIN 53366: Siv rau kev faib tawm qhov ruaj khov ntawm cov ntaub ntawv.

Cov xwm txheej kuaj ib txwm muaj yog 70°C / 95% Qhov av noo sib piv (RH) rau ntau pua txog ntau txhiab teev, nrog rau kev kuaj xyuas tsis tu ncua los saib xyuas kev hloov pauv ntawm kev ua tau zoo.

Cov Txheej Txheem Txhim Kho Kev Tiv Thaiv Hydrolysis

Yog tias qhov tsis kam ntawm hydrolysis ntawm polyester-based TPU tsis txaus, cov hau kev hauv qab no tuaj yeem siv tau:

1. Ntxiv Cov Tshuaj Hydrolysis Stabilizers: Ib qho ntawm cov txheej txheem zoo tshaj plaws yog ntxiv polycarbodiimide (PCD) lossis lwm yam tshuaj tiv thaiv hydrolysis. Cov no "kho" cov saw hlau molecular tawg thiab ncua kev puas tsuaj.
2. Txhim Kho Cov Qauv Molecular: Xaiv cov polyester polyols uas muaj qhov hnyav molecular siab dua, cov saw ntev dua, lossis cov qauv branched kuj tseem tuaj yeem txhim kho kev ruaj khov ntawm hydrolysis rau qee qhov.

Cov Lus Qhia Txog Kev Xaiv thiab Cov Lus Qhia Txog Kev Xaiv

• Kev Xaiv Tseem Ceeb: Nyob rau hauv cov chaw noo noo, qhov tseem ceeb tshaj plaws yog TPU uas ua los ntawm polyether.
• Kev Ntsuas: Ntsuas qhov ntau ntawm cov qib TPU sib txawv los ntawm kev sib piv cov nqi tensile thiab lwm cov ntaub ntawv los ntawm kev xeem laus.
• Kev Sib Npaug Yog Qhov Tseem Ceeb: Paub tias TPU uas ua los ntawm polyether yuav muaj zog thiab tiv taus cua sov qis dua me ntsis piv rau cov qib uas ua los ntawm polyester. Yuav tsum ua kom muaj kev sib npaug ntawm kev tiv taus hydrolysis thiab cov khoom siv kho tshuab.

Kev nkag siab txog cov kev ntsuas no yuav pab koj xaiv cov khoom siv TPU zoo rau koj cov khoom, kom ntseeg tau tias muaj kev ntseeg siab mus sij hawm ntev hauv nws qhov chaw ib puag ncig.

TxogYantai Linghua Tshiab Khoom Co., Ltd.

Yantai Linghua New Material Co., Ltd. muaj kev tshawb fawb thiab kev tsim khoom zoo hauv kev tsim cov khoom siv polyether. Ua tus kws tshaj lij TPU, tau tsim tsa xyoo 2010, lub tuam txhab tau loj hlob mus ua ib lub tuam txhab lag luam puv ntoob uas koom ua ke kev lag luam raw khoom, kev tshawb fawb thiab kev tsim khoom, thiab kev muag khoom.

Nws cov khoom TPU ua los ntawm polyether, raws li cov qauv ether hauv cov saw hlau molecular, muab cov khoom siv nrog kev tiv thaiv hydrolysis zoo heev, kev ua haujlwm kub qis qis (mus txog -40 ° C thiab qis dua), thiab kev tiv thaiv zoo rau mildew. Tsis tas li ntawd, cov khoom muaj lub zog siab, kev tiv thaiv kev sib txhuam zoo, thiab kev ua haujlwm zoo heev, thaum ua raws li cov kev cai zoo thoob ntiaj teb suav nrog REACH, RoHS, thiab FDA. Siv cov khoom no, Linghua New Materials' polyether TPU cov khoom siv dav dav hauv cov hlau thiab cable, cov khoom siv tsheb, cov yeeb nkab tua hluav taws, cov raj thiab cov kav dej, thiab khau - kev siv hauv kev lag luam thiab cov neeg siv khoom xav tau kev tiv thaiv huab cua siab thiab kev ruaj khov mus sij hawm ntev.