Hauv cov ntawv thov kev lag luam, ntau yam tsis tseem ceeb hais txog polyurethane hnav-cov khoom tiv taus yog feem ntau txaus siab:
Coefficient of Friction: Polyurethane nto yog du thiab elastic heev; qhov kev sib txhuam qhuav coefficient feem ntau yog li ntawm 0.4 txog 0.6, thaum nyob hauv ntub lossis roj- qhov chaw nplua nuj, nws tuaj yeem poob rau ntawm 0.2 txog 0.4. Tsawg coefficient ntawm kev sib txhuam ua kom yooj yim khiav ntawm cov ntaub ntawv thiab pab txo cov blockages.
Hardness (Shore Hardness): Lub hardness ntawm polyurethane feem ntau ntog nyob rau hauv thaj tsam ntawm 60–95 Shore A (rau elastomers) los yog 20–50 Shore D (rau siab -hardness variants). Hardness ncaj qha cuam tshuam rau ob qho tib si hnav tsis kam thiab elasticity; Feem ntau, hardness siab dua correlates nrog superior hnav tsis kam, tab sis nws yuav ua rau ib tug me ntsis txo nyob rau hauv elasticity thiab cuam tshuam tsis kam.
Resilience (Rebound) Coefficient: Polyurethane nthuav tawm cov elasticity zoo heev, nrog rau qhov sib txawv ntawm qhov sib txawv ntawm 40% mus rau 80%. Cov cuab yeej no ua rau cov khoom siv tau zoo nqus cov quab yuam, yog li txo qhov hnav thiab tsim kua muag ntawm cov khoom siv.
Qhov ceev: Qhov ntom ntawm polyurethane feem ntau yog li ntawm 1.1 txog 1.3 g / cm³. Ua kom sib zog dua cov hlau, nws pab txo qis tag nrho cov khoom ntawm cov khoom siv thaum tib lub sijhawm tswj kev hnav zoo - cov khoom tiv taus.
Cov kev txwv no ncaj qha txiav txim siab ua haujlwm ntawm cov khoom siv polyurethane- tiv taus cov khoom. Piv txwv li, qhov tsim nyog calibrated coefficient ntawm kev sib txhuam ua kom cov khoom siv zoo tsis muaj slippage; balancing hardness thiab resilience yields kev ua tau zoo nyob rau hauv cov nqe lus ntawm ob qho tib si hnav tsis kam thiab cuam tshuam kev nqus; thiab qhov ntsuas qhov ntom ntom ncaj qha cuam tshuam rau tag nrho cov qauv ntawm kev kuaj xyuas lossis cov khoom siv thauj khoom. Cov neeg tsim khoom feem ntau ua kom zoo dua cov kev txwv no-los ntawm kev kho cov tshuaj formulations thiab koom nrog cov fillers tshwj xeeb- kom haum rau cov kev ua haujlwm tshwj xeeb thiab cov yam ntxwv ntawm txhua daim ntawv thov. Qhov kev ua kom zoo zoo no ua kom ntseeg tau tias polyurethane hnav- cov khoom siv tiv thaiv ua kom muaj kev ua haujlwm siab tshaj plaws thiab ua tiav lub neej ua haujlwm ntev tshaj plaws nyob rau ntau qhov chaw, suav nrog kev tsuas, khoom siv, tshuaj, thiab kev tiv thaiv ib puag ncig.
