Vim li cas Polyurethane yog ib qho khoom siv foob zoo?

Thaum tsim cov qauv tsim nyog, Polyurethane yields cov khoom siv zoo nkauj uas ua rau nws yog cov khoom siv zoo tshaj plaws rau cov khoom sib khi.
Nws tuaj yeem hloov tau; uas tso cai rau cov ntsaws ruaj ruaj yuav tsum tau sib sau ua ke rau hauv cov grooves kaw, tiv thaiv loj deformation thiab ua rau lawv muaj zog txaus kom muaj sia nyob yam tsis muaj kev puas tsuaj. Nyob rau hauv no hwm nws outperforms PTFE thiab yog tsawg kawg ntawm ib tug par nrog roj hmab.

Nws muaj tus cwj pwm zoo elastic, rov zoo yuav luag tam sim ntawm deformation; rov ua tau zoo dua PTFE (tsis muaj cov springs lossis roj hmab energisers xav tau ntawm no los muab qhov kev sib khi kev sib txuas rau thawj zaug) thiab cov khoom siv roj hmab sib txuam. Txawm li cas los xij, tsis zoo li cov roj hmab nws muaj qis coefficient ntawm kev sib txhuam, nrog kev ua haujlwm siab heev, tensile zog thiab nruj. Cov khoom no txhais tau hais tias nws tuaj yeem siv tau yam tsis muaj kev tiv thaiv-extrusion / rov qab rings ntawm qhov siab siab dua li 90 durometer elastomer o-ring yuav muaj peev xwm.

Hauv kev ntsuam xyuas kev puas ntsoog, Polyurethane muaj ib feem peb ntawm cov hnav ris tsho uas pom los ntawm cov khoom siv roj hmab zoo xws li NBR (thiab qis dua cov qhab nia ntawm PTFE). Nws lub zog tensile thiab tsim kua muag feem ntau yog 3-5 lub sij hawm siab dua cov ntaub ntawv roj hmab, thiab txawm hais tias nws tsis muaj tshuaj lom neeg thiab kub muaj peev xwm ntawm PTFE, nws yog sib xws nrog cov roj ntxhia.

Polyurethane foobcov ntaub ntawv feem ntau muaj qhov dav dav ntawm kev khiav hauj lwm qhov kub ntawm ib ncig ntawm -35 degree mus rau +110 degree, txawm hais tias ntau tus kws tshaj lij qib tuaj yeem hloov pauv mus rau -50 degree , thiab lwm qib tuaj yeem thawb lub siab mus rau ib puag ncig. 130 degree.

Vim tias nws tuaj yeem raug txhaj tshuaj molded nrog rau machined los ntawm cov raj, nws qiv nws tus kheej rau kev tsim cov ntsaws ruaj ruaj nyob rau hauv ob qho tib si siab thiab qis, uas tso cai rau kev lag luam yooj yim ntawm ob qho tib si qauv thiab ntau lawm theem ntawm ib qhov project.