1.Dab tsi yog cov teeb meem tseem ceeb?
Txhawm rau ua tiav huab cua tsis kam, tiv thaiv corrosion, thiab stain kuj, cov xim txheej txheej ntawm cov xim -coated coils (polyester PE, silicone- hloov polyester SMP, polyvinylidene fluoride PVDF, thiab lwm yam) feem ntau muaj lub zog qis. This "low surface energy" characteristic makes the coating surface dense and smooth, making it difficult for liquids and adhesives to wet and penetrate, resulting in weak initial adhesion and easy peeling.
2.Dab tsi yog yam tseem ceeb cuam tshuam rau adhesion?
Txheej hom (los ntawm qhov nyuaj tshaj plaws mus rau qhov yooj yim tshaj):
PVDF (Fluorocarbon) Txheej: Tsawg zog saum npoo, smoothest, zoo tshaj plaws los tiv thaiv- cov khoom nplaum, yog li qhov nyuaj tshaj plaws rau kev thov.
HDP (High Durability Polyester) / SMP Txheej: Nruab nrab ntawm ob.
Ordinary PE (Polyester) Txheej: Qhov yooj yim rau kev thov, tab sis tseem nyuaj.
PVC Plastisol los yog Embossed Txheej: Textured nto tsub kom muaj kev sib tshuam ntawm cov neeg kho tshuab, ua rau muaj qhov adhesion zoo dua li cov txheej txheej.
Surface condition:
Kev huv huv: Cov plua plav thiab roj (xws li xeb- tiv thaiv cov roj los ntawm kev tsim khoom lossis cov kab mob sib kis los ntawm kev thauj mus los) yog cov yeeb ncuab tseem ceeb ntawm adhesion.
Smoothness: High -gloss nto yog qhov nyuaj rau siv dua li matte / textured nto.
Kho Qib: Cov txheej txheem kho kom zoo yog qhov ruaj khov dua, tab sis adhesion kuj tseem phem dua.
Hom kab xev:
Ordinary chaw ua hauj lwm pob tshab daim kab xev, daim kab xev npog, daim kab xev, thiab lwm yam., muaj tsis tshua muaj adhesion rau xim -coated steel los xij thiab yooj yim tev tawm.
Cov kab xev tshwj xeeb tsim los rau "cov khoom siv hluav taws xob tsawg" yog xav tau.
3.Yuav ua li cas deg pretreatment?
Kev tu kom huv: Siv isopropyl cawv (IPA) lossis cov tshuaj ntxuav tshwj xeeb (acetone yuav tsum tau siv nrog ceev faj vim nws yuav ua rau qee cov coatings puas tsuaj) thiab lint -dawb ntaub los so kom huv si ntawm thaj chaw yuav tsum tau sib txuas, tshem tawm tag nrho cov roj thiab hmoov av. Kev ywg dej feem ntau tsis txaus.
Lub cev Sanding (rau kev sib txuas mus tas li): Rau cov chaw me me uas xav tau kev sib koom ua ke siab heev, thaj chaw yuav tsum tau sib koom ua ke tuaj yeem ua rau cov xuab zeb me ntsis kom ua rau qhov chaw roughness thiab muab cov neeg kho tshuab adhesion. Txawm li cas los xij, txoj kev no tuaj yeem ua rau cov txheej txheem puas tsuaj hauv qee qhov chaw thiab yuav tsum tau ua tib zoo soj ntsuam.
Siv Primer: Qhov no yog txoj hauv kev tshaj lij thiab ua tau zoo. Siv cov txheej txheem tshwj xeeb "yas / txheej txheej kho tus neeg saib xyuas" (feem ntau muaj cov kuab tshuaj uas me ntsis yaj lub txheej txheej, ua kom lub zog ntawm lub zog) mus rau qhov chaw huv. Cia nws evaporate thiab qhuav ua ntej kev sib txuas; adhesion tuaj yeem nce ntau zaus.
4.Yuav ua li cas xaiv cov khoom nplaum zoo?
Muab ob npaug -sided foam tapes: Xaiv VHB (High Bond) hom ua npuas ncauj tapes nrog acrylic nplaum. Cov no yog tsim los rau kev sib txuas cov khoom siv hluav taws xob tsawg (xws li cov yas thiab coated hlau). Lawv qhov siab pib tack thiab qeeb - tso tawm cov khoom tsim nyog dua.
High -cov ntaub ntawv muaj zog: xws li cov ntaub ntawv -raws li daim kab xev los yog zaj duab xis tapes rau yas thiab txheej.
Cov kua nplaum nplaum: Rau kev sib txuas mus tas li, epoxy resin adhesives, polyurethane structural adhesives, los yog cov yas tshwj xeeb -cov nplaum nplaum tuaj yeem siv tau. Ntxiv dua thiab, kev kho qhov chaw yog qhov tseem ceeb heev.
5.Yuav ua li cas rau kev sib khi thiab kho cov txheej txheem?
Thov txaus thiab txawm tias siab thaum thov cov nplaum.
Tso cai rau lub sijhawm kho kom txaus raws li daim kab xev / nplaum (tshwj xeeb tshaj yog rau VHB daim kab xev, uas yuav tsum tau 24-72 teev kom ncav cuag lub zog siab tshaj plaws).