Thermal tsis kam ntawm TPU zaj duab xis

Cov pa TPU feem ntau yog los yog kub-resistant mus rau 80 degree, uas txhais tau hais tias nws siv mus sij hawm ntev ambient kub tsis tshaj 80 degree, txwv tsis pub nws cov kev pab cuam lub neej yuav poob. Kuj tseem muaj TPUs tiv taus cua sov, uas tau hais tias tuaj yeem tiv taus mus txog 130 degree. Tsis tas li ntawd, kuj tseem muaj cov iav fiber ntau hloov TPUs, uas kuj muaj qhov kub thiab txias heev.
TPU zaj duab xis yog ib yam khoom uas muaj - NH-COO-pab pawg nyob rau hauv lub molecule. Long-chain diols thiab isocyanates tsim cov ntu muag, thiab cov saw luv luv diols thiab isocyanates tsim cov ntu nyuaj. Ntau yam khoom ntawm TPU nyob ntawm seb hom ntev-chain diols. Lub hardness yog kho raws li qhov kev faib ua feem ntawm cov ntu nyuaj. Qhov sib ntxiv ntawm lub teeb stabilizer tuaj yeem txhim kho cov duab thaij duab ntawm TPU elastic band
Tom qab tag nrho, nws yog yas. Qhov kub tsis kam yog feem ntau nyob ib ncig ntawm 100 degree. Tab sis yog tias koj yuav tsum ua haujlwm nyob rau hauv qhov kub thiab txias ntev, koj xav tau cov ntaub ntawv tshwj xeeb. Reinforced polyurethane muaj qhov tshwj xeeb kub thiab roj tsis kam, thiab feem ntau yog siv rau hauv lub khob roj tsheb.
Feem ntau hais lus, yog tias peb xav tau kev txhim kho cov cua sov, nws yog ib qho tsim nyog los ntsuas qhov ua haujlwm loj. Lub softening point ntawm daim npav xeem tuaj yeem txiav txim siab raws li cov qauv kev qhia hauv lub tebchaws. Lub ntiaj teb softening point yog siv los kuaj qhov muag muag ntawm asphalt pavement. Nws feem ntau yog siv hauv TPU kub yaj nplaum.
Txoj kev loj hlob ntawm cov ntaub ntawv ntsuas los ntawm capillary rheometer zoo li muaj plaub qhov tseem ceeb. Lub hauv paus ntsiab lus ntawm txoj kev xeem tsis yog tsuas yog ntsuas lub xeev ntawm TPU nyob rau hauv qhov sib txawv ambient kub nyob rau hauv tas li lub siab, yam ntxwv los ntawm softening point thiab ntws point. Thermodynamic zog ntawm TPU.