I. Hom Maint thiab tej yam ntxwv ntawm Damping Roj Hmab Cheebtsam
Damping roj hmab Cheebtsam tuaj yeem raug cais raws li cov khoom siv, cov qauv qauv, thiab cov ntawv teev cov xwm txheej. Cov khoom sib txawv muaj ntau hom kev sib txawv ntawm qhov ua tau zoo hauv damping kev ua tau zoo, ib puag ncig kev yoog tau, thiab lub neej pabcuam.
1. Kev faib tawm los ntawm cov hom khoom
Ntuj roj hmab (NR) -BASED Damping Cheebtsam
Cov yam ntxwv: High elasticity, zoo heev txheej txheem kho tshuab siv hluav taws xob, thiab ib qho noo noo damping coeffing coefficient (tan}. {{1.
Cov Ntawv Thov: Feem ntau siv nyob rau hauv tsawg zaus-co zaus scentrarios, xws li kev siv tsheb cav mounts.
Kev txwv: Cov neeg tsis zoo kub - kub tsis kam thiab kev laus tiv thaiv. Cov kev pabcuam kub ntev yog feem ntau hauv qab 80 degree.
Butyl roj hmab (iIR) -based damping Cheebtsam
Cov yam ntxwv: Lub siab hysteresis ntawm cov molecular characes xaus rau nws nrog kev ua kom zoo damping (ziab tshiab}. 5), thiab nws muaj zog ozone kuj thiab tshuaj lom neeg tiv taus.
Cov Ntawv Thov: Poob siab - nqus cov ntaub qhwv rau cov tsheb ciav hlau hla, cov bearings cais.
Kev txwv: Quab lwm cov tshuab zog muaj zog, thiab nws yuav tsum tau txhim kho los ntawm kev sau thiab txhawb nqa.
Nitrile - butadiene roj hmab (nbr) -based damping Cheebtsam
Cov yam ntxwv: Cov roj ua tsis tau zoo, haum rau cov roj muaj qhov chaw ua haujlwm, thiab cov khoom siv damping me me (ziab ≈ {}}}}. 4).
Cov Ntawv Thov: Seem thiab poob siab-nqus cov khoom rau cov khoom siv hydraulic.
Kev txwv: Pom tseeb qis - kub brithless, thiab nws yuav tsum tau ntxiv cov tshuab yas rau kev ua kom zoo dua.
Silicone roj hmab (vmq) -based damping Cheebtsam
Cov yam ntxwv: Dav kub tsis kam ({{0}}}}}} {05 - 0. 2).
Cov Ntawv Thov: Poob siab ua poob siab nyob rau hauv high-kub ib puag ncig hauv aerospace.
Kev txwv: Cov nqi siab, thiab nws yuav tsum tau ua ke nrog cov tub lim los txhim kho kom muaj kev ua kom ntub dej.
Polyurethane Roj Hmab (PU) -Based Damping Cheebtsam
Cov yam ntxwv: Muaj peev xwm muaj peev xwm, cov coj tau zoo, thiab muaj ntau qhov hloov kho cov coeffing ({}. {2}}. 6).
Cov Ntawv Thov: Tsis yog Buffer thaiv rau cov tshuab hnyav, kev sib cais kev cais rau cov twj paj nruag.
Kev txwv: Tsis kam mus rau tshav kub - thiab - noo kev laus, thiab nws yog nquag rau hydrolysis.
2. Kev Sib Tw Los Ntawm Cov Txheej Txheem Txheej Txheem
Compression-Hom Damping Cheebtsam
Cov yam ntxwv: Lawv dissipate lub zog los ntawm axial compression deformation, muaj cov qauv yooj yim, thiab cov khoom muaj peev xwm siab.
Cov Khoom Raug Zoo: Lub tsev rho tawm cov kabmob, thiab tus choj poob siab-nqus cov ntaub qhwv.
Shear - Hom Damping Cheebtsam
Cov yam ntxwv: Lawv nqus lub zog los ntawm shear deformation, muaj cov lus teb zoo nkauj, thiab yog tsim nyog rau suppressing high-furrigency deeg.
Cov Khoom Raug Zoo: Automotive Ncua Kev Ncees Bushings, lub cav muaj lub zog poob siab-nqus cov hauv paus.
Puas yog - Hom damping Cheebtsam
Cov yam ntxwv: Lawv muab cov qauv compression thiab shear qauv, muaj kev ua tau zoo, tab sis kev tsim qauv siab.
Cov Khoom Raug Zoo: Shocksigber rau cov tsheb ciav hlau siab nrawm, kev sib cais-kev rho tawm tshuab rau cov cuab yeej thev naus laus zis.
3. Kev faib tawm los ntawm daim ntawv thov teb
Lub teb tsheb kho: Lub cav mounts, tso tawm hangers, thiab chassis bushings yuav tsum muaj kev qaug zog tsis kam thiab kev ua tau zoo hauv qhov ntsuas kub ntau.
Siv teb: Kev rho tawm cov kabmob thiab cov dampers yuav tsum tau ntsib High - load - cov kabmob - cov kabmob tau thiab lub neej kev pabcuam ntev (ntau dua 50 xyoo).
Muaj Cov Cuab Yeej Siv: Poob siab - nqus cov ntaub qhwv rau twj thiab li qub, buffer thaiv rau xuas nrig ntaus tshuab, nrog kev qhia ntau ntxiv thiab cuam tshuam kuj.
Ii. Cov Qauv Txheej Txheem Ntawm Damping Roj Hmab Cheebtsam
Formula tsim yog qhov tseem ceeb txuas rau sib npaug li damping kev ua tau zoo, lub zog kho tshuab, thiab ib puag ncig kev hloov kho. Nws yog ib qho tsim nyog kom muaj kev nkag siab txog lub synergistic cuam tshuam ntawm matrix cov ntaub ntawv, sau cov tshuab, vulcanization tshuab, thiab cov khoom sib ntxiv.
1. Xaiv cov ntawv Matrix
Xaiv ntawm lub ntsiab rubbers:
Siab - damping scenarios: IIR lossis NBR nrog cov ntsiab lus muaj acrylonitrile zoo dua xaiv.
Dav - Kub - Ntau Yam Yuav Tsum Tau: Silicone roj hmab lossis roj hmab fluoro roj hmab (FKM) yog siv.
Tsawg - cov nqi daws teeb meem: NR yog siv hauv kev sib xyaw nrog cov roj hmab rov qab (cov feem sib npaug yog feem ntau tsawg dua lossis sib npaug rau 30%).
Kev ua ke ntawm cov thev naus laus zis:
NR / Br Blending: Nws txhim kho cov qes qis - elasticity thiab siv rau cov cuab yeej hauv cov cheeb tsam txias.
IIR / EPDM Blending: Nws sib nqus damping kev ua tau thiab kev laus tiv thaiv.
2. Tsim kev ntawm kev sau tag nrho
Kev txhawb nqa fillers:
Cov pa roj hmab dub (N550, N660): Nws txhim kho kev siv zog, tab sis muaj ntau yam yuav txo tau damping (cov nyiaj puv yog tsawg dua lossis sib npaug rau 60 phr).
Silica (sitio): It enhances strength and increases tan δ at the same time, especially suitable for silicone rubber systems (the dosage is 20 - 40 phr).
Tej Khoom Siv Ua Haujlwm:
Graphite / carbon fiber: Nws txhim kho tshav kub kub ua haujlwm thiab tiv thaiv kev kub ntxhov.
Mica hmoov / vermiculite: Nws block ntawm kev tshaj tawm ntawm cov suab tsis thiab txhim kho lub suab - rwb thaiv tsev cov nyhuv.
3. Kev ua kom zoo ntawm cov vulcanization system
Sulphur Vulcanization System:
Siv tau cov ntaub ntawv: NR, SBR.
Cov yam ntxwv: High Cross - Txuas ntom ntom, tab sis tsis zoo cua sov tsis kam. Nws yog ib qho tsim nyog los ntxiv cov scorch inhibitor ctp.
Peroxide vulcanization System:
Siv tau cov ntaub ntawv: IIR, EPDM, cov roj hmab silicone silicone.
Cov yam ntxwv: Good high - temperature resistance, low compression set, but the dosage of DCP needs to be controlled (1 - 3 phr).
Resin Vulcanization System:
Siv tau cov ntaub ntawv: IIR.
Cov yam ntxwv: Tus ntoo khaub lig - kev sib txuas network muaj ntau yam zoo dua, thiab kev ua tau zoo dua qub yog ruaj khov, tab sis tus nqi yog qhov siab.
4. Cov tshuab yas thiab ua haujlwm ntxiv
Yas tshuab:
Esters (DOP, DOS): Lawv txhim kho qhov tsawg - qhov kub thiab txias ntawm NBR, thiab cov tshuaj ntau dua lossis sib npaug rau 20 phr.
Roj Paraffin: Nws yog siv rau IIR kom txo tau cov moone viscosity thiab zam kev tsiv teb tsaws.
Damping modifiers:
Hindered Phenols (xws li AO - 60): Lawv nce ziab av Δ los ntawm molecular - saw txhuam.
Av nplaum / Orgmanronic Montmorillonite: Lawv nce kev sib txhuam interfacial.
Kev Tiv Thaiv Cov Tshuab:
Antioxidants (RD, 4020): Lawv ncua ncua qhov kub - oxidatterat kev laus.
Antiozonants (6PPD): Lawv tau siv rau sab nraum zoov cov xwm txheej.
5. Tus cuam tshuam ntawm cov txheej txheem tsis
Nws cov txheej txheem sib xyaw: Pub rau hauv theem kom tiv thaiv scorching. Qhov ntsuas kub ntawm sab hauv tov khoom yog tswj hwm ntawm 110 - 130 degree.
Vulcanization cov xwm txheej: Iir yuav tsum tau ntev - lub sij hawm vulcanization (160 degree × 30 min), thiab silicone roj hmab siv ob - theem vulcanization (200 degree × 4 h).
III. Kev tsim kho yav tom ntej
Kev tiv thaiv ib puag ncig: Tsim Bio - raws li pobbers (xws li roj hmab roj hmab roj hmab) thiab cov qauv tsis muaj roj uas tsis muaj roj.
Siab - kev ua tau zoo: Siv Nanoscale fillers (xws li carbon nanotubes) thiab cov khoom siv damping (magnetorhianological elastomers).
Sib xyaw Tsim: Siv cov tshuab luam ntawv 3D tshuab kom ua tiav cov khoom siv sib xyaw ua ke ntawm cov qauv txheej txheem nyuaj.
Tus qauv tsim ntawm Damping Roj Hmab Cheebtsam yuav tsum tau thov - scenario - taw qhia, thiab kev ua tau zoo nyiaj yuav ua tau los ntawm kev xaiv xaiv, thiab kev ua kom zoo dua qub. Nyob rau hauv lub neej yav tom ntej, nrog cov kev sib tawg ntawm cov ntaub ntawv tshiab thiab daim ntawv thov ntawm cov khoom siv tshuab ntse, damping roj hmab Cheebtsam yuav ua lub luag haujlwm tseem ceeb hauv cov teb dav.
