Teb ceev
Dawb thermoplastic txoj kev npav feem ntau tig daj vim yogoverheating, rov qab melting, tsis zoo - cov khoom raw tsis zoo, cov khoom sib kis, cov kab mob asphalt tshiab, lossis ntev - raug UV. Feem ntau, yellowing tsis yog tshwm sim los ntawm ib qho tseem ceeb tab sis los ntawm kev sib xyaw ntawm cov khoom zoo, kev tswj kub, kev tsim kho, thiab ib puag ncig. Qhov kub thiab txias zoo, siab -titanium dioxide zoo, cov khoom siv huv si, thiab kev tsim kho kom raug tuaj yeem txo cov xim daj thiab txhim kho lub sij hawm ntev - xim stability.
Vim li cas Dawb Txoj Kev Markings tig daj?
Yellowing tuaj yeem tshwm sim tam sim tom qab kev tsim kho lossis maj mam thaum ua haujlwm.
Feem ntau:
- Kev yellowing tam sim no feem ntau yog cuam tshuam nrog kev tsim kho lossis teeb meem khoom siv.
- Ntev - lub sij hawm daj yog feem ntau tshwm sim los ntawm tshav kub, ultraviolet (UV) raug, thiab ntuj aging.
Kev txheeb xyuasthaumqhov yellowing tshwm sim yog thawj kauj ruam hauv kev nrhiav qhov tseeb.
Ua rau 1. Cov cua kub ntau dhau thaum Melting
Qhov no yog feem ntau ua rau kev tsim kho -txog daj.
Thaum cov khoom tau rhuab saum toj no qhov ntsuas kub rau lub sijhawm ntev, roj av resin pib degrade. Cov resin maj mam oxidizes, txo qhov ci ntawm cov xim dawb thiab ua rau daj lossis xim av tsos. Kev tshawb fawb tseem qhia tau hais tias qhov kub thiab txias yog ib qho tseem ceeb tshaj plaws uas cuam tshuam rau qhov yellowing Performance index ntawm thermoplastic txoj kev cim.
Kev xyaum zoo
- Khaws daim ntawv thov kub nyob rau hauv qhov chaw tsim khoom pom zoo (feem ntauKub ntawm 180-220 degrees).
- Tsis txhob overheating thaum melting.
- Siv lub ntsuas kub ntsuas kub los yog rab phom kub infrared es tsis txhob cia siab rau ntawm lub ntsuas hluav taws xob nkaus xwb.
Ua rau 2. Rov ua cua sov ntawm cov khoom seem
Thermoplastic ximtuaj yeem rov ua dua vim tias nws hardens los ntawm lub cev txias es tsis yog tshuaj tua kab mob.
Txawm li cas los xij,rov siab -kub cua sov ua kom cov resin aging.
Txhua lub voj voog cua sov maj mam txo cov resin stability, ua cov cim dawb ntau dua yuav daj, ua nkig, thiab poob qhov ci.
Kev xyaum zoo
- Siv cov khoom siv tib hnub thaum twg los tau.
- Sib tov ib qho me me ntawm cov khoom seem nrog cov khoom tshiab es tsis txhob rov ua kom tag nrho cov khoom rov ua dua.
Ua rau 3. Cov khoom siv tsis zoo
Tsis yog txhua qhov yellowing yog tshwm sim los ntawm kev tsim kho.
Cov ntaub ntawv tsis zoo kuj tuaj yeem txo qhov ntev - xim ruaj khov.
Tsis txaus Titanium Dioxide
Titanium dioxide (TiO₂) yog thawj cov xim dawb hauv cov xim thermoplastic txoj kev kos xim.
Yog tias TiO₂ cov ntsiab lus qis dhau los lossis nws qhov zoo tsis zoo, qhov pib ci ntsa iab yuav txo qis thiab cov cim yuav ua rau muaj xim daj nyob rau lub sijhawm.
Tsawg-Quality Petroleum Resin
Lub purity ntawm roj av resin ncaj qha cuam tshuam rau xim stability.
Tsawg-qib lossis tsis huv resin oxidizes yooj yim dua thaum cua sov, ua rau muaj kev pheej hmoo ntawm kev hloov xim.
Ncua sij hawm lossis noo noo -Cov khoom tsis huv
Kev khaws cia tsis raug, kev nqus dej noo, lossis cov khoom siv tas sijhawm tuaj yeem txo cov txheej txheem ua haujlwm thiab ua kom yellowing.
Ua rau 4. Cov Khoom Siv Hluav Taws Xob
Cov cuab yeej huv si feem ntau tsis saib xyuas.
Yog tias cov xim daj daj nyob hauv lub lauj kaub los yog cov khau screed ua ntej cov khoom siv dawb ntxiv, cov cim dawb tshiab tuaj yeem tshwm daj tam sim ntawd.
Qhov no yog qhov tshwj xeeb tshaj yog thaum hloov los ntawm cov xim daj mus rau xim dawb yam tsis tau ntxuav cov khoom kom huv si. Cov koom haum thauj mus los kuj tau teev cov kev ntxuav tsis txaus ntawm daim ntawv thov lub lauj kaub ua ib qho ua rau muaj xim dawb lossis ntsuab - cov cim daj.
Kev xyaum zoo
- Ntxuav lub lauj kaub yaj ua ntej hloov xim.
- Tshem tawm tag nrho cov khoom seem daj ua ntej melting dawb thermoplastic.
Ua rau 5. Fresh Asphalt Contamination
Cov asphalt tshiab muaj cov roj teeb thiab cov tshuaj tsis haum.
Thaum cov xim thermoplastic siv tam sim ntawd tom qab paving, cov tshuaj no tuaj yeem txav mus rau hauv cov xim dawb thiab cuam tshuam rau nws cov tsos. Tib txoj kev pavement kuj tuaj yeem ua rau bubbling ntawm cov tshiab asphalt.
Kev xyaum zoo
- Tso cai tshiab asphalt pav rau hnub nyoog rau1-2 lub lis piamua ntej kos thaum twg los tau.
- Tsis txhob muab khi rau ntawm txoj kev oily lossis kab mob.
💡 Daim ntawv qhia ntsig txog
Fresh asphalt tsis tsuas yog ua rau muaj kev pheej hmoo ntawm yellowing. Nws kuj yuav ua rau bubbling, pinholes, thiab adhesion tsis zoo.
→ Vim li cas Thermoplastic Road Marking Npuas ntawm Asphalt Tshiab
Ua rau 6. Ntev-Lub Sijhawm UV thiab Kub Kub
Txawm tias thaum tsim kho kom raug, cov cim dawb maj mam muaj hnub nyoog.
Kev raug hluav taws xob tsis tu ncua, hluav taws xob ultraviolet, thiab qhov kub ntawm qhov chaw siab ua rau cov duab -oxidation ntawm cov resin, uas ua rau maj mam nce hauv cov xim daj. Cov kev tshawb fawb soj ntsuam tsis ntev los no qhia tau tiaskub kub thiab UV hluav taws xob ua hauj lwm ua ke kom ceev yellowing, nrog cov cim thermoplastic feem ntau ua rau muaj kev cuam tshuam ntau dua li ob -cov khoom siv.
Yuav Ua Li Cas Tiv Thaiv Dawb Thermoplastic Markings los ntawm Kev Hloov Daj
| Kev pom zoo | Lub hom phiaj |
|---|---|
| Tswj melting kub | Tiv thaiv resin degradation |
| Tsis txhob rov ua dua | Txo thermal aging |
| Siv cov-TiO₂ zoo | Khaws qhov kaj |
| Xaiv siab -purity petroleum resin | Txhim kho xim stability |
| Ntxuav cov cuab yeej ua ntej cov cim dawb | Tiv thaiv kev sib kis - |
| Tsis txhob kos cov asphalt tshiab | Txo cov roj paug |
| Siv cov khoom tam sim ntawd tom qab melting | Txo cov cua sov kom ntev |
Yellowing puas cuam tshuam rau txoj kev kos npe?
Yog lawm.
Yellowing tsis yog ib qho teeb meem tshwm sim xwb.
Raws li cov resin muaj hnub nyoog thiab lub brightness txo:
- Qhov ci ntsa iab poob qis.
- Qhov sib piv nrog cov pavement yuav qis dua.
- Hmo ntuj pom kev yuav raug txo.
- Retroreflectivity yuav maj mam txo vim tias cov xim dawb hauv qab cov iav hlaws yuav tsis tshua pom. Kev tshawb fawb tsis ntev los no tseem txuas ntxiv yellowing nrog thermal thiab UV degradation ntawm cov khoom siv.
Cov lus nug nquag
Vim li cas cov npav dawb yuav tig daj tam sim tom qab thov?
Feem ntau yog vim muaj cua sov, rov ua cua sov dua, tsis zoo - cov khoom siv tsis zoo, lossis cov khoom tsis huv.
Puas overheating mus tas li puas cov xim thermoplastic?
Yog lawm. Cov cua kub ntau dhau ua rau cov resin degradation thiab tuaj yeem txo qhov ci ntsa iab thiab kav ntev.
Yellowed thermoplastic puas tuaj yeem ua dawb dua?
Tsis yog. Thaum cov khoom tau yellowed vim thermal degradation los yog laus, cov xim yuav rov qab tsis tau.
Puas yog titanium dioxide tiv thaiv yellowing?
High- zoo titanium dioxide txhim kho cov xim dawb thiab ntev - lub sij hawm xim ruaj khov, tab sis nws tsis tuaj yeem tiv thaiv yellowing los ntawm overheating los yog ntev UV raug.
Dab tsi yog txoj hauv kev zoo tshaj los tiv thaiv yellowing?
Siv cov khoom siv raw zoo, tswj qhov kub thiab txias, tsis txhob rov ua dua, ua kom cov khoom huv si, thiab ua raws li cov txheej txheem tsim kho kom raug.
