Cov hauv qab no yuav piav qhia txog cov khoom siv tshuab ntawm TPU ntawm tensile lub zog thiab elongation, resilience, hardness, thiab lwm yam.
① tensile siab thiab elongation siab
TPU muaj lub zog zoo tshaj plaws lub zog thiab elongation. Los ntawm cov ntaub ntawv hauv daim duab hauv qab no, peb tuaj yeem pom tau tias lub zog tensile thiab elongation ntawm polyether TPU yog Favel zoo dua rau polyvinyl chloride yas thiab roj hmab.
Ib qho ntxiv, TPU tsis ntxiv lossis ntxiv cov ntxiv me ntsis ntxiv thaum ua cov txheej txheem ua, uas tseem nyuaj rau lwm cov ntaub ntawv xws li PVC thiab roj hmab.
Resilience yog heev rhiab rau qhov kub
Lub resilience ntawm Elastomer TPU yog hais txog qib uas nws tau sai sai rau nws cov kev ntxhov siab tom qab kev hloov pauv mus ua haujlwm rau kev ua haujlwm yuav tsum tau los ua deformation. Nws yog cov haujlwm ntawm cov qauv hloov pauv thiab kev sib txhuam sab hauv ntawm Elastomer thiab yog heev rhiab rau qhov kub.
Qhov muag muag ntawm TPU yog PTMG, PCL, thiab PBA, nrog tus txheeb ze hnyav hnyav ntawm 1000 thiab 2000 feem; Cov ntu nyuaj yog MDI-BDO, nrog rau cov txheej txheem nyuaj ntu ntawm 48.2% (pcl {{5,7% feem, thiab r}}. 05 prepolymerization synthesis.
Raws li tau kev cia siab, cov thaub qab tsawg zuj zus nrog qhov ntsuas kub kom txog thaum muaj qhov kub thiab txias, thaum twg elasticity nce sai. Qhov ntsuas kub no yog cov tshuab ua muaj tseeb ntawm cov ntu muag, uas tau txiav txim siab los ntawm cov qauv ntawm macromolecular diololular diololular diol, thiab yog qis rau polyether tpu dua polyester TPU. Ntawm qhov kub hauv qab no lub crystomization kub, tus elastomer ua nyuaj heev thiab poob nws txoj kev elasticity, yog li cov thaub qab zoo ib yam li tawm ntawm cov hlau tawv.
③hardness ntau yog ntug dej 60a {1}} d
Hardness yog qhov ntsuas ntawm cov khoom siv muaj peev xwm tiv taus deformation, tsis yog khawb thiab khawb.
TPU Hardness feem ntau yog ntsuas los ntawm ntug dej A thiab Shore D Durometers, Ntug dej A yog siv rau Softer TPU, thiab ntug dej D yog siv rau HARDER TPU.
Txij li thaum lub hardness ntawm TPU tuaj yeem hloov kho qhov sib piv ntawm cov muag muag thiab cov khoom siv nyuaj, thiab muaj cov roj hmab zoo tshaj plaws thoob plaws hauv kev nyuaj.
Nrog kev hloov ntawm tawv tawv, qee cov khoom ntawm TPU yuav hloov. Piv txwv li, nce lub hardness ntawm TPU yuav ua rau kev hloov pauv tensile thiab rhuav lub ntom ntom, nce ntom ntom ntom ntom, thiab cov cua sov ntau ntxiv.