Paub meej: Raws li tus qauv tseem ceeb ntawm txoj kev loj hlob yav tom ntej hauv kev lag luam tsheb, lub teeb yuag yuav tsum tau siv zoo hauv cov ntaub ntawv polymer, uas tuaj yeem paub txog lub teeb yuag ntawm lub tsheb, kuj tuaj yeem muaj qee lub luag haujlwm hauv kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig, thiab tuaj yeem ua rau tsheb. kev tsim khoom ntau dua. Zoo meej, txhim kho kev ua tau zoo ntawm lub tsheb, thiab tuaj yeem siv cov khoom siv polyurethane hauv cov qauv thiab kho kom zoo nkauj ntawm kev tsim tsheb.
Ntsiab lus: polyurethane; kev tsim tsheb; daim ntawv thov
Daim ntawv no piav qhia luv luv thiab piav qhia txog daim ntawv thov thiab kev tsim cov khoom siv polyurethane hauv ntau cov qauv hauv kev tsim tsheb, feem ntau yog rau kev tsom xam thiab kev cia siab ntawm polyurethane foams, tshuaj tiv thaiv txhaj tshuaj molded polyurethane khoom, polyurethane elastomers thiab polyurethane adhesives. Nws tuaj yeem ua lub luag haujlwm txhawb kev tsim kho tsheb tsim kev lag luam yav tom ntej.
1. Polyurethane ua npuas ncauj
Polyurethane ua npuas ncauj yog tsim los ntawm isocyanate thiab hydroxyl compound foamed nyob rau hauv qhov kev txiav txim ntawm polymerization. Polyurethane ua npuas ncauj tuaj yeem muab faib ua cov khoom muag muag thiab semi-rigid thiab nruj. Saj zawg zog ua npuas ncauj yog siv nyob rau hauv kev tsim tsheb. Cov ntaub ntawv uas tib neeg tuaj yeem tiv tauj ncaj qha, xws li lub taub hau thiab lub ru tsev tsheb, tuaj yeem rov qab los ntawm lawv cov yam ntxwv, uas tuaj yeem tiv thaiv kev nyab xeeb ntawm tib neeg thiab txhim kho kev nyab xeeb ntawm lub tsheb. Cov ntaub ntawv semi-hard feem ntau yog siv rau cov qauv xws li ntsuas vaj huam sib luag, uas tuaj yeem txuag lub sijhawm tsim khoom thiab muaj kev ruaj ntseg siab. Rigid cov ntaub ntawv yog tsuas yog siv nyob rau hauv lub tsheb cabin rwb thaiv tsev. Polyurethane foams feem ntau ua rau cov nplaim hluav taws kub hnyiab ntawm cov yas foamed los ntawm kev ntxiv cov nplaim hluav taws kom ncua kev sib txuas, tiv thaiv cov pa taws lossis txawm tias tua hluav taws kub, yog li txhim kho kev nyab xeeb ntawm tsheb. Nws muaj cov nyhuv filling zoo, uas tuaj yeem tiv thaiv lub tsheb los ntawm corroded thiab txo cov suab nrov hauv lub tsheb.
2. Kev txhaj tshuaj molded polyurethane khoom
Cov tshuaj tiv thaiv kev txhaj tshuaj molding txoj kev muaj qhov zoo ntawm cov cuab yeej siv qis thiab cov nqi khiav lag luam, cov khoom zoo nkauj zoo nkauj, muaj kev cuam tshuam zoo, thiab cov qauv tsim loj. Cov khoom siv polyurethane no yog tsim los ntawm kev tsim cov khoom ua kua hauv cov pwm. Yuav luag tsis muaj qhov sib txawv ntawm lub zog ntawm cov hlau, tab sis nws yog 50 feem pua sev dua li cov hlau, uas tuaj yeem txhawb nqa lub teeb ntawm lub tsheb zoo dua. Nws yog tsuas yog siv rau qhov chaw xws li lub cev thiab lub kauj. Raws li cov qauv tseem ceeb ntawm lub tsheb, lub kauj tsheb tuaj yeem ua kom muaj kev nyab xeeb ntawm tsev neeg cannibals. Thaum muaj xwm txheej, nws tuaj yeem txo qhov kev puas tsuaj rau tus neeg tsav tsheb thiab xyuas kom muaj kev ruaj ntseg ntawm cov qauv. Ntau lub tsheb bumpers kuj siv cov khoom zoo li no, thiab steel tuav tseem tuaj yeem muab tso rau hauv kom zoo dua kom cov neeg tsav tsheb tau txais kev hem thawj tsawg. Thaum lub cev vaj huam sib luag yog ua los ntawm cov khoom siv polyurethane, nws yog qhov tseem ceeb vim tias nws muaj kev cuam tshuam zoo, uas tuaj yeem ua kom muaj kev ua tau zoo ntawm lub cev thiab tsis tuaj yeem cuam tshuam los ntawm deformation hauv ntau qhov chaw.
3. Polyurethane elastomer
Polyurethane elastomers feem ntau yog siv los ua cov qauv tseem ceeb xws li kev poob siab-absorbing tsis thaiv hauv daim ntawv thov kev tsim tsheb. Vim tias cov khoom siv elastic polyurethane muaj kev ua haujlwm zoo cushioning, nws tuaj yeem siv ua ke nrog cov khoom siv lub caij nplooj ntoos hlav muaj zog ntawm lub chassis ntawm lub tsheb los txhim kho qhov kev poob siab-absorbing tsis thaiv. Nws tseem tuaj yeem txhim kho kev nplij siab ntawm lub tsheb, thiab cov tsheb feem ntau siv cov khoom siv thiab thev naus laus zis. Lub airbag ib feem tseem yog ua los ntawm cov khoom siv polyurethane nrog cov elasticity siab, vim tias cov qauv no yog qhov kawg thaiv kev tiv thaiv tus neeg tsav tsheb thiab ua lub luag haujlwm tseem ceeb. Nws yuav tsum tau hais tias lub zog thiab elasticity ntawm lub airbag yuav tsum tau raws li qhov yuav tsum tau, thiab elastic polyurethane yog qhov haum tshaj plaws. Xaiv, thiab cov khoom siv polyurethane yog lub teeb, feem ntau airbags tsuas yog li 200g.
Cov log tsheb yog ib feem tseem ceeb ntawm lub tsheb tsav tsheb. Kev pabcuam lub neej ntawm cov log tsheb zoo tib yam yog luv luv, thiab lawv tsis tuaj yeem siv rau hauv ib puag ncig muaj zog, thiab lawv kuj muaj kev cuam tshuam tsis zoo rau tib neeg kev noj qab haus huv. Yog li ntawd, cov ntaub ntawv zoo dua yuav tsum tau xaiv. , thiab cov ntaub ntawv polyurethane tuaj yeem ua tau raws li cov cai no, thiab tseem muaj cov yam ntxwv ntawm kev nqis peev tsawg thiab cov txheej txheem yooj yim. Lub tshav kub tsis kam ntawm polyurethane log tsheb yog qhov nruab nrab thaum lub sij hawm nres nres, uas kuj yog vim li cas rau lawv txwv tsis pub siv rau hauv cov ntawv thov tshwj xeeb. Feem ntau, cov log tsheb polyurethane yog cov txheej txheem casting, uas tuaj yeem ua rau cov log tsheb hloov mus rau cov kev xav tau sib txawv, kom cov log tsheb yuav tsis muaj kuab lom thiab ntsuab heev. Kuv vam tias qhov teeb meem ntawm cov log tsheb polyurethane tsis tuaj yeem tiv taus qhov kub thiab txias tuaj yeem daws tau yav tom ntej, kom lawv tuaj yeem siv dav.
4. Polyurethane Adhesive
Cov hydrogen daim ntawv cog lus ntawm polyurethane thiab cov khoom yuav tsum tau sib koom ua ke yuav txhim khu kev sib koom ua ke ntawm cov molecules thiab ua rau cov ntawv cog lus muaj zog. Polyurethane nplaum kuj muaj zoo toughness thiab adjustability. Polyurethane nplaum muaj qhov zoo heev shear zog thiab ua haujlwm. Kev cuam tshuam, haum rau ntau yam txheej txheem nplaum teb, nrog kev ua tau zoo heev, cov nplaum polyurethane no muaj kev ua tau zoo, tuaj yeem hloov mus rau qhov sib txawv ntawm thermal expansion coefficients, muaj zog adhesion, thiab kuj muaj zoo heev cushioning thiab Shock absorption muaj nuj nqi, raws li lub windshield kua nplaum. lub tsheb, cov khoom siv polyurethane tuaj yeem ua tiav cov nyhuv sealing zoo ntawm lub tsheb, ua rau lub iav lub tsheb thiab lub cev ruaj khov, ua kom tag nrho cov rigidity thiab lub zog ntawm lub tsheb, thiab txo qhov hnyav ntawm lub tsheb. tsav. Cov ntaub ntawv polyurethane kuj tseem siv rau sab hauv ntawm ntau lub tsheb, vim tias cov dej tsis kam ntawm cov khoom siv no tshwj xeeb yog qhov zoo, uas tuaj yeem tiv thaiv cov khoom siv deforming thaum raug dej, thiab ua rau lub tsheb sab hauv zoo nkauj thiab xis nyob.
5. Cov lus xaus
Lub teeb yuag ntawm kev tsim tsheb tau dhau los ua tus qauv tseem ceeb ntawm kev tsim tsheb, thiab nws kuj yog ib qho kev ntsuas rau qib ntawm kev tsim tsheb. Muaj ntau txoj kev thov sib txawv, tsuas yog kuv lub teb chaws cov ntaub ntawv polyurethane zoo dua siv hauv kev tsim tsheb, thiab kev tshawb fawb ntawm cov ntaub ntawv polyurethane tau daws cov teeb meem cuam tshuam, xws li cov cua kub tsis kam ntawm cov log tsheb, uas tseem yuav tsum muaj kev ntsuas sib xws hauv kev tsim tsheb hauv kev lag luam tsheb. Nrog rau kev tshawb fawb sib koom ua ke ntawm cov kws tshaj lij thiab kev txhawb nqa ntawm cov cai cuam tshuam, nws vam tias kev tsim tsheb hauv tsev yuav txuas ntxiv txhim kho.
