Kev siv cov polyurethane microcellular elastomers los ua cov khau khau pib nyob rau xyoo 1960. Lub tebchaws United Kingdom, Nyiv, Lub Tebchaws Yelemees, Austria thiab lwm lub tebchaws tau txhawb nqa kev siv cov ntaub ntawv polyurethane ua npuas ncauj hauv kev lag luam khau ib puag ncig xyoo 1967, vim nws qhov kev ua tau zoo hauv kev lag luam khau. . Los ntawm 1974, cov khau looj plab hlaub ua los ntawm polyurethane ua npuas ncauj hauv Western European lub teb chaws tau tsim txog li 160 lab khub, suav txog li 20 feem pua ntawm lawv cov khoom siv tag nrho.
Hauv kev lag luam khau, ua tsaug rau kev siv polyurethane ua npuas ncauj, khau tsis yog tsuas yog lub teeb thiab xis, tab sis kuj hnav-tiv taus. Nyob rau hauv cov nqe lus ntawm ntau lawm efficiency, nws kuj tau zoo heev txhim kho vim lub cim ua technology, thiaj li hais tias cov khoom no tau tsim sai heev nyob rau hauv lub lag luam khau. Tam sim no, hauv cov ntaub ntawv siv hauv kev lag luam khau, polyurethane ua npuas ncauj tau suav txog 6 feem pua rau 8 feem pua ntawm tag nrho cov ntaub ntawv.
Cov yam ntxwv ib leeg ntawm microcellular polyurethane elastomer yog raws li nram no:
01 Polyurethane microcellular elastomer yog qhov ntom ntom tsis tau mos, xis thiab hnav hnav. Qhov ceev ntawm cov roj hmab thiab cov yas yas xws li cov roj hmab zoo tib yam thiab PVC feem ntau yog 1.2 ~ 1.48g / cm3. Txawm hais tias lawv yog foamed, lawv qhov ceev tsuas yog nyob ib ncig ntawm 0.8g/cm3. Qhov ceev ntawm polyurethane microcellular elastomer soles yog qis dua 0.6g / cm3.
02 Polyurethane ib leeg muaj qhov zoo ntawm qhov ruaj khov thiab ua haujlwm ntev. Kev xyaum tau ua pov thawj tias lub neej cia ntawm cov khoom siv polyurethane ua haujlwm siab yog tsawg kawg 10 xyoo. Ib 7-hnub ceev kev laus simulation simulation tau ua tiav ntawm 100 feem pua ntawm cov av noo ntawm 70 degree thiab 80 degree (sib npaug rau 10 xyoo ntawm kev khaws cia hauv ib puag ncig zoo tib yam. Cov txiaj ntsig tau pom tias cov khoom ntawm cov khoom siv polyurethane tsis hloov pauv. tseem ceeb nyob rau hauv 7 hnub, thaum lwm yam ntaub ntawv npaj Lub outsole, nyob rau hauv tib lub xeem tej yam kev mob, twb puas lawm.
03 Polyurethane ib leeg muaj kev hnav zoo heev thiab ua tau raws li cov qauv kev lag luam German nruj. Raws li cov kev sim ua ke ua los ntawm British Sa-Tra Shoemaking cov chaw tshawb fawb, thaum lub sij hawm dual-density midsole thiab siab ntom lub hnav tsis kam ntawm outsole) yog qhov tseem ceeb dua.
04 Polyurethane nkawm khau muaj kev ua haujlwm zoo heev. Nyob rau hauv tus txheej txheem ntawm hnav thiab taug kev, nkawm khau yuav tsum tiv taus loj flexing thiab khoov. Lub flexural tsis kam ntawm urethane ib leeg tuaj yeem tshaj 250, 000 zaug, uas zoo dua li ntawm lwm cov khoom siv. Lub flexural kuj tseem zoo dua.
05 Cov tshuaj tiv thaiv ntawm polyurethane ib leeg yog zoo dua li ntawm lwm cov khoom siv ib txwm siv. Piv txwv li, nws qhov kev tiv thaiv rau roj av thiab roj av raws li cov roj av muaj txiaj ntsig zoo dua li cov ntaub ntawv yas thiab roj hmab dav dav; nws cov alkali kuj zoo ib yam li cov khoom siv roj hmab zoo tib yam, tab sis nyob rau hauv cov nqe lus ntawm acid kuj, polyurethane ib leeg Nws yog phem dua li cov roj hmab ib leeg.
06 Cov khau uas tau npaj los ntawm kev siv cov polyurethane microporous elastomer muaj cov cushioning zoo thiab muaj kev tiv thaiv zoo rau tib neeg ko taw. Vim li no, tam sim no, feem ntau cov khau ncaws pob siv cov khoom siv polyurethane ua cov khoom xaiv.
Polyurethane soles muaj qhov kub thiab txias. Piv txwv li, qhov chaw ua hauj lwm ntawm cov hlau thiab steel kev lag luam, kev lag luam machinery, thiab lwm yam. muaj qhov kub thiab txias los yog feem ntau cov hlau filings kub, khib nyiab thiab lwm yam khoom. Kev tuav pov hwm kev ua haujlwm ua haujlwm khau ua haujlwm hauv cov sijhawm zoo li no yuav tsum muaj qhov kub thiab txias. Feem ntau hais lus, cov khoom siv roj hmab muaj qhov ua kom sov zoo tshaj plaws, cov ntaub ntawv thermoplastic xws li PVC yog qhov phem tshaj, thiab cov ntaub ntawv polyurethane nyob hauv nruab nrab. Nws tuaj yeem tiv taus qhov kub siab ntawm 150 ° C rau lub sijhawm txwv, tab sis nws cov thermal rwb thaiv tsev kev ua tau zoo yog qhov zoo tshaj plaws.
