Adhesives rau Sealing Application
Deepmaterial qhov kev ua tau zoo ntawm ib thiab ob qho kev lag luam sealants yog ib qho yooj yim mus thov thiab muaj nyob rau hauv kev siv yooj yim applicators. Lawv muab cov kev daws teeb meem zoo rau cov kev siv thev naus laus zis. Peb cov khoom sealing muaj xws li epoxy, silicones, polysulfide thiab polyurethanes. Lawv yog 100% reactive thiab tsis muaj cov kuab tshuaj los yog diluents.
Dab tsi yog qhov txawv ntawm Adhesive & Sealants?
Sealants yog cov polymers muaj cov qauv nruj molecular uas tsis tso cai nkag mus. Lawv muaj cov epoxies nrawm nrawm uas ua kom tiav qhov zoo nkauj. Adhesives yog ib tug ntau complex qauv tsim los tuav thiab khi ntawm ib tug cellular theem.
Adhesive vs. Sealants
- Sealants yog tsim los kaw qhov sib txawv ntawm qhov chaw thiab tiv thaiv tej yam xws li hmoov av, dej, los yog av los ntawm lawv. Adhesives feem ntau yog tsim los ua kom ob qhov chaw sib txuas ua ke kom cov chaw tsis tuaj yeem sib cais.
- Sealants muaj zog qis dua thiab siab elongation / yooj thiab tsis siv los khi cov ntaub ntawv ua ke thaum cov nplaum yog txhais tau los lo ob yam ua ke los ntawm adhesion.
- Sealants tsis tas yuav muaj lub zog nplaum uas xav tau rau lub sijhawm ntev adhesion thiab cov nplaum tsis qhuav kom zoo thaum siv rau sab nrauv.
- Sealants muaj qhov sib xws zoo li qhov sib xws uas tso cai rau qhov sib txawv ntawm cov substrates thiab muaj qhov qis qis tom qab thov. Adhesives yog nyob rau hauv daim ntawv ua kua uas yuav ua tau zoo tom qab daim ntawv thov thiab ces siv los khi cov ntaub ntawv ua ke.
- Adhesive yuav muab kev xav nruj dua thiab ruaj khov thiab zoo li tsis sib xws rau cov sealants uas qis dua hauv lub zog thiab deb dua malleable.
Efficiency Sealing nrog Adhesives
Cov ntsaws ruaj ruaj muaj kev txiav txim siab ntawm kev ua haujlwm thiab kev ua haujlwm ntev ntawm kev teeb tsa, kev sib dhos, thiab cov khoom siv. Txawm li cas los xij, kev saib xyuas feem ntau tsuas yog muab rau lawv thaum lawv ua tsis tiav. Thaum O-rings yog qhov feem ntau siv cov ntsaws ruaj ruaj thiab qee yam ntawm cov ntsaws ruaj ruaj zoo li qub, cov cuab yeej siv nplaum nplaum nrog cov kua gaskets thiab cov foob pob hluav taws qhib qhov kev xaiv ntxiv rau kev sib khi ruaj khov.
Efficiency Sealing nrog Adhesives
Cov ntsaws ruaj ruaj muaj kev txiav txim siab ntawm kev ua haujlwm thiab kev ua haujlwm ntev ntawm kev teeb tsa, kev sib dhos, thiab cov khoom siv. Txawm li cas los xij, kev saib xyuas feem ntau tsuas yog muab rau lawv thaum lawv ua tsis tiav. Thaum O-rings yog qhov feem ntau siv cov ntsaws ruaj ruaj thiab qee yam ntawm cov ntsaws ruaj ruaj zoo li qub, cov cuab yeej siv nplaum nplaum nrog cov kua gaskets thiab cov foob pob hluav taws qhib qhov kev xaiv ntxiv rau kev sib khi ruaj khov.
Hauv kev tsim khoom lag luam, kev sib koom ua ke ntawm cov khoom feem ntau yuav tsum tau muab kaw kom tsis txhob muaj huab cua, plua plav, dej, thiab tshuaj lom neeg. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev ua haujlwm ntawm electronics, automotive, mechanical engineering, thiab process engineering. Cov ntawv thov raug muaj ntau yam raws li kev lag luam uas lawv tau siv. Qee qhov piv txwv yog cov vaj tsev ntawm cov khoom siv hluav taws xob, cov hlau nplaum, thiab, tau kawg, cov tshuab fluidic.
Rau qee qhov, cov khoom tuaj yeem raug kaw hauv txoj kev tsim kho kom zoo yam tsis muaj kev foob ntxiv. Txawm li cas los xij, nrog rau kev nce ntxiv nws tuaj yeem tsim nyog siv lub foob sib cais.. Hauv engineering, txoj haujlwm no feem ntau yog hais los ntawm kev tsim cov khoom ntawm cov duab geometry kom lub foob zoo li qub tuaj yeem muab tso rau hauv qhov sib koom ua ke. Raws li cov thermal, tshuaj, thiab txhua yam yuav tsum tau, muaj cov ntsaws ruaj ruaj feem ntau muaj roj hmab, silicones, thermoplastic elastomers, los yog Teflon.
Puas yog Rubber?
Roj hmab yog cov khoom siv dav tshaj plaws rau cov hom phiaj no, thiab kev xaiv rau cov khoom siv roj hmab muaj qee qhov zoo: lawv kaw zoo heev. Cov compression raug teem rau nitrile roj hmab ntawm tus qauv tej yam kev mob ntawm 100 ° C / 24h yog 20 - 30%. Tsis tas li ntawd, cov roj hmab no tau tsim tau zoo nrog rau cov thermally, tshuaj, thiab mechanically robust, nrog cov khoom siv tsawg. Txawm li cas los xij, lawv kuj muaj qhov tsis zoo, tshwj xeeb nrog rau kev sib koom ua ke rau hauv cov txheej txheem tsim khoom.
Nrog ib puag ncig sealing geometry, qhov tsis zoo yuav yog qhov tsis tseem ceeb thiab O-rings yuav yog qhov kev daws teeb meem zoo tshaj plaws. Nyob rau hauv cov ntaub ntawv ntawm sealing cords los yog sealing tapes xws li cov uas siv rau vaj tse, npaum ntau lawm yog (twb) nyuaj. Lawv xav tau kev sib txuas ntxiv ntawm kev sib txuas ntawm qhov chaw sib txuas uas ob qhov kawg kov ib leeg, uas txhais tau hais tias ib qho ntxiv thiab tej zaum yuav siv sij hawm siv cov kauj ruam.
Ntau cov roj hmab cov duab tuaj yeem tsim los ntawm kev xuas nrig ntaus lossis vulcanizing. Qhov no tso cai rau cov txheej txheem tsim khoom yooj yim, tab sis cov no tsuas yog siv tau rau lub ntim ntau lawm, txij li cov pwm kim rau txhua tus duab yuav tsum khaws cia hauv Tshuag.
Sealing qhov sib txawv nrog Thermoplastic Elastomers
Cov ntsaws ruaj ruaj ua los ntawm cov thermoplastic elastomers (TPE) muab lwm txoj hauv kev. Lawv raug siv ncaj qha rau cov khoom siv los ntawm kev txhaj tshuaj molding. Lawv yog cov muaj zog, abrasion-resistant, thiab ua raws li cov txheej txheem plastics xws li PA, PC, los yog PBT, uas ua rau lub foob xau-pov thawj. Nyob rau hauv chav tsev kub, TPE coj zoo li classical elastomers, tab sis cov thermoplastic tivthaiv txwv qhov kub ntawm daim ntawv thov ntau yam mus rau 80 - 100 ° C, nrog rau compression teem nyob rau hauv siab dua. Rau qhov dav siv TPU, cov txheej txheem compression yog kwv yees li 80% (100 ° C / 24 h), rau lwm hom TPE muaj nuj nqis nyob ib ncig ntawm 50% yog ua tau.
Cov txheej txheem ntawm kev txhaj tshuaj yog yooj yim dua li vulcanizing, tab sis tseem tsis tseem ceeb, tshwj xeeb tshaj yog vim muaj kev ua haujlwm nruab nrab ntawm TPUs thiab qhov tseeb tias cov cuab yeej xav tau rau txhua qhov geometry. Tsis tas li ntawd, yuav tsum muaj ntau lub tshuab txhaj tshuaj molding tshuab txhawm rau kom tsis txhob muab cov khoom siv ntxiv rau hauv cov txheej txheem ntxiv.
Thawj Ua Kua, Ces Tight
Nrog cov kua gaskets xws li cov nqi peev tsis tshwm sim. Cov hom gasket no yog cov dej-resistant, cov kua nplaum nplaum-raws li cov khoom uas yog dispensed raws li qhov xav tau qhov siab thiab cov duab thiab tom qab ntawd kho hauv lawv txoj haujlwm. Lawv daim ntawv thov kev yooj yim ua rau lawv haum rau cov khoom siv geometries, txawm tias peb sab. Lwm qhov kom zoo dua ntawm cov kua gaskets piv rau cov khoom gaskets yog tias lawv tsis yog ib feem ntawm qhov chaw ntawm qhov chaw ntxhib, yog li zoo dua sealing wavy nto thiab tso cai rau kev tsim khoom siab dua.
Piv nrog rau qee zaum nyuaj roj hmab lossis TPU cov ntsaws ruaj ruaj, lawv koom nrog cov txheej txheem tsawg dua, txo lub sijhawm teeb tsa lub tshuab, thiab tsim kev tsis lees paub tsawg dua li kev txiav tuag. Cov txheej txheem ntau lawm tuaj yeem ua haujlwm tau yooj yim, tsuas yog ib qho uas xav tau rau kev tsim khoom ntawm tag nrho cov khoom. Muaj peev xwm dispensing yuam kev nyob rau hauv lub sealing hlaws yog kuaj pom los ntawm fluorescence rau optical inline zoo tswj. Txij li nws tsis tsim nyog los tuav ntau cov ntsaws ruaj ruaj muaj, cov nqi khaws cia tsis yog qhov teeb meem.
Txog tam sim no, cov khoom ntawm silicone lossis polyurethane puag feem ntau tau siv rau cov kua gaskets. Txawm li cas los xij, ob lub ntsiab lus no kho tau qeeb thiab yog li zoo dua rau cov khoom loj lossis cov me me. Nyob rau hauv cov ntaub ntawv ntawm cov loj series, cov txheej txheem tsis yooj yim thiab hloov tau yooj yim ua tau los ntawm cov kua gaskets feem ntau tsis tuaj yeem them nyiaj rau qhov tsis zoo ntawm kev ceev piv rau cov roj hmab los yog TPU seals.
Txawm li cas los xij, rau qee lub sijhawm tam sim no, lub teeb-kho ib qho acrylates tau nyob rau hauv kev ua lag luam, ua kom pom lawv lub zog tshwj xeeb hauv cov koob loj. High-zog UV lub teeb ua kom ntseeg tau tias cov nplaum mus txog nws lub zog kawg hauv ob peb feeb, yog li tso cai rau lub sijhawm luv luv thiab kev ua haujlwm ncaj qha ntawm cov khoom, uas yog qhov tseem ceeb kom ua tiav qhov ntim ntau lawm.
Cov khoom zoo rov qab los ntawm cov ntaub ntawv ua kom ntseeg tau tias kev sib khi zoo tom qab kev sib koom ua ke: qhov qis compression teeb txog li 10% (85 ° C, 24 h) tso cai rau lawv rov qab tau lawv cov duab qub thaum tsis muaj qhov siab ntxiv. Ntau qhov chaw-qhuav versions tso cai rov qab disassembly. Tsis tas li ntawd, acrylate-raws li tsim-hauv-qhov chaw gaskets ua tau raws li IP67 cov cai, ua tsaug rau lawv cov dej-repellent zog. Lawv yog PWIS- thiab hnyav-dawb, muaj qhov kub thiab txias ntawm -40 txog 120 ° C.
Sealing thiab Bonding hauv Ib Mus
Lub foob foob yog qhov kev daws teeb meem zoo tshaj plaws yog tias lub foob tau meej meej txhais tau tias tsis tuaj yeem tshem tawm. Ntawm no dua, nws muaj peev xwm tsim tau txhua yam duab thiab siv fluorescence rau inline tswj kom zoo. Ib qho txiaj ntsig ntxiv yog lub zog xa hluav taws xob - cov nplaum tsis yog tsuas yog muab cov khoom sib khi tab sis koom nrog lawv mus tas li. Qhov no txhais tau hais tias yuav tsum tau txo qhov chaw. Screws tsis tas yuav tsum tau, tso cai rau cov vaj tsev me me, kev ua haujlwm me me ntawm cov rooj sib txoos, thiab cov txheej txheem tsim khoom tsawg dua.
Rau cov ntawv thov ntim siab, lub teeb-kho acrylates thiab epoxy resins yog qhov tsim nyog tshwj xeeb, nyob ntawm qhov xav tau ntawm thermal thiab tshuaj. Thaum epoxy resins muaj qhov ruaj khov me ntsis hauv qhov kub thiab txias, acrylates muab kev yooj yim dua thiab kho sai dua. Ntxiv mus, dual-curing versions muaj nyob rau ob tsev neeg cov khoom. Kho hauv qhov cub lossis los ntawm kev sib cuag nrog cov av noo, cov nplaum no ua kom muaj kev sib txuas tag nrho txawm nyob hauv qhov chaw ntxoov ntxoo.
xaus
Cov ntsaws ruaj ruaj tsis yog cov nplhaib roj hmab xwb. Raws li nrog rau txhua yam khoom, ntau haiv neeg tau nce ntau heev. Bonding tshuab nrog nws lub teeb-kho cov kua gaskets thiab sealing kev daws teeb meem muab cov neeg siv nrog cov kev xaiv tshiab los ua kom zoo dua lawv cov qauv tsim thiab ua tiav cov txheej txheem ntau lawm thiab hloov tau yooj yim.
Info Box: Compression Set
Lub deformation mus tas li yog qhov tseem ceeb rau cov ntsaws ruaj ruaj, txij li lub flange foob yog compressed rau ib tug tej thickness thiab exerts lub siab ntawm flange nto. Lub siab no txo qis thaum lub sij hawm vim yog cov khoom sealing deformation. Lub zog deformation, ntau lub zog nias thiab yog li cov nyhuv sealing txo.
Cov cuab yeej no feem ntau yog qhia raws li cov txheej txheem compression. Txhawm rau txiav txim siab compression teeb tsa raws li DIN ISO 815 lossis ASTM D 395, cov qauv cylindric raug compressed rau 25% (tus nqi nquag) thiab tom qab ntawd khaws cia rau qee lub sijhawm ntawm qhov kub thiab txias. Cov txiaj ntsig zoo yog 24 teev ntawm 100 ° C lossis 85 ° C. Feem ntau 30 feeb tom qab lub siab nyem, lub thickness yog ntsuas dua nyob rau hauv chav tsev kub, txiav txim siab mus tas li deformation. Qhov qis ntawm compression teeb, ntau cov khoom siv rov ua dua nws qhov qub thickness. Cov txheej txheem compression ntawm 100% yuav txhais tau tias cov qauv qhia tsis muaj cov duab zoo li qub.
Deepmaterial's Polyurethane Sealants muab lub zog, yoog raws thiab ruaj khov elastomeric daim ntawv cog lus uas khi tawm tsam cov khoom. Lawv ua tau zoo hauv kev sib tw kev lag luam, kev thauj mus los thiab kev tsim kho thiab tuaj yeem pleev xim ib zaug ib daim tawv nqaij. Cov sealants no muaj nyob rau hauv ntau yam hardnesses, qhib lub sij hawm thiab xim kom tau raws li koj daim ntawv thov xav tau.
