1. Fain SubStrate pores thiab thaiv noo noo / Dej nkag
Lub tsev substrates (tshwj xeeb yog cov pob zeb ua thiab cape cug cov nplai thiab cov capillary raws ntawm lawv cov chaw, thiab tuaj yeem khaws cov dej noo lossis ntub dej sab hauv. Yog tias cov dej lim tau thov kom ncaj qha:
Cov khoom xyaw nquag hauv cov txheej yuav yog "nqus tau" los ntawm cov ntxaij vab tshaus, ua rau kom qhuav qhuav, thiab txawm tias "chalking";
Lub ya raws sab hauv lub substrate yuav nthuav tawm thaum rhuab nyob rau hauv theem tom qab, nqa cov txheej dej tsis huv thiab ua rauhollowing, tawg, thiab tev, uas ncaj qha rau cov nyhuv waterproof.
Kev ua haujlwm ntawm tus thawj pib: los ntawm nws porneability, nws nyob rau thaj chaw me me, sib sau ua yeeb yaj kiab "los thaiv cov yeeb yaj kiab uas tau dhau los ntawm noo noo hauv lub substrate. Nyob rau tib lub sijhawm, nws txwv tsis pub tiv thaiv dej xau txuas ntxiv los ntawm kev ua kom zoo tshaj plaws los ntawm cov txheej txheem uas cov khaub ncaws hnav zoo nkauj thiab ua tiav cov zaj duab xis waterproof ntawm cov npoo.
2. Txhim kho cov nplaum ntawm txheej waterproof thiab lub substrate
Waterproof txheej (xws li polyurethane, js cement -, ntoo thiab lwm yam) thiab lwm yam yog nquag mus rau "delamination".
Muaj nuj nqi ntawm tus thawj:
Ob {- txoj kev sib txuas choj choj: The Primer tsis tuaj yeem tsuas yog tsim tshuaj lom neeg lossis lub cev ua kom sib xyaw nrog cov txheej txheem dej hauv av, kev tiv thaiv cov txheej txheem dej ntawm cov ntaub nyias nyias nyias,
Txhim kho cov npoo av polarity ntawm substrate: Piv txwv li, saum npoo ntawm cov hlau ua kom du thiab qis hauv polarity, ua rau nws nyuaj rau cov kua dej ntawm lub tsho tiv no. Tus thawj coj ua haujlwm tshwj xeeb tuaj yeem txhim kho qhov chaw roughness thiab polarity los ntawm kev hloov kho tshuaj lom neeg, txhim kho cov nyhuv ua kom zoo.
3. Qib thiab kho cov kev tsis xws luag me me ntawm cov substrate
Lub substrate nto yuav muaj cov kab nrib pleb (xws li qhob qhob shrinkage cracks), pinholes, lossis hais tawm. Yog tias tsis kho:
Cov quav dej tsis yooj yim tsim "cov ntsiab lus tsis muaj zog" ntawm qhov tsis xws luag
Protruding hais yuav ua rau txheej txheej tsis sib xws thiab tsis muaj teeb meem hauv zos thickness.
Muaj nuj nqi ntawm tus thawj:
Primer nrog fluidity zoo tuaj yeem sau me me tawg thiab pinholes, sib sau ib txheej hloov txheej txheej.
Nws muaj qee yam "encapsulation thiab cov solidification" cuam tshuam rau cov kev cuam tshuam ntawm cov chaw ua kom huv thiab muab cov khoom siv du thiab ua kom haum rau cov dej tsis muaj zog.
4. Txuag cov kev pab ntawm dej lim thiab txo tus nqi
Yog hais tias lub substrate muaj siab porosity, muaj ntau ntawm cov txheej yuav pom mus rau hauv lub pores (hu ua "nqus dej tsis zoo. Qhov no yuav tsum muaj ntau lub tsho ntev mus txog qhov tsim tuab, ntxiv cov khoom siv.
Kev ua haujlwm ntawm tus thawj coj: los ntawm kev sib khi cov pores, nws txo qhov "tsis muaj txheej txheem dej paug" ntawm cov dej tsis muaj zog, tso cai rau cov khoom siv tom ntej kom tau siv los ua cov yeeb yaj kiab tsis tu ncua rau saum npoo. Feem ntau, nws tuaj yeem txuag 15% -30% ntawm cov dej lim dej txheej, txo cov tsho tiv no, thiab txhim kho kev tsim kho kev tsim kho.
5. Haum rau kev sib txawv ntawm cov kev sib txawv thiab txhim kho qhov sib xyaw ntawm cov dej tsis muaj dej
Cov tsev sib txawv substrates (xws li pob zeb vuas, ceramic vuas luaj li cas, yog li cov khoom siv tsis muaj khoom siv rau kev coj ua "cov khoom sib cav sib ceg":
Piv txwv li, thaum ua ntawv thov cov polyurethane tshiab rau ib txheej asphalt waterroof, kev tsim kho ncaj qha yog nquag rau "o ntawm kev tawm tsam". Siv tshwj xeeb kev cais tshwj xeeb tuaj yeem thaiv cov tshuaj sib cuam tshuam ntawm ob thiab xyuas kom meej;
Ntoo substrates yog xav txog kev nqus dej noo thiab deformation. Ib qho tshwj xeeb ntoo primer tsis tuaj yeem tsuas yog kaw pores tab sis kuj ua ib qho kev pab cuam hauv - einending - Ua pov thawj lub neej ntawm substrate.
Hom Prever thiab lawv cov haujlwm tseem ceeb rau kev sib txawv (siv)
| Substrate Hom | Hom Primer Hom | TSEEM CEEB NTAWM COV KEV UA HAUJLWM |
|---|---|---|
| Qhob / Cesen Cug | Maas - Raws li permeable crystalline primer, Acrylic Primer | Foob Pores, txhim kho adhesion, thaiv noo |
| Hlau (Hlau Qauv) | Epoxy Zinc - Primer nplua nuj, phosphating primer | Kev tiv thaiv xeb, txhim kho thaj chaw polarity, txhim kho adhesion |
| Ntoo | Dej -} Raws cov ntoo seeding primer primer, Alkyd Primer | Foob Ntoo Hmoov, Anti - corrosion thiab noo noo {{}} Cov ntaub ntawv pov thawj, tiv thaiv cov kev nkag mus |
| Qub waterproof txheej (asphalt / yob) | Asphalt - raws kev cais tawm, neoprene primer | Collolate cov ntaub ntawv tshiab thiab qub, kom tsis txhob o, txhim kho adhesion |
| Tej hub vuas / Pob zeb | Interface Kho Tus Kheej (nrog Quartz xuab zeb) | Txhim kho qhov chaw roughness, tiv thaiv txheej txheej swb |
Hauv cov ntsiab lus, The Primer tsis yog "xaiv cov khoom siv" tab sis aCRUCIA sib xyaw tiv thaivHauv kev tsim lub tsev dej tsis muaj dej uas "txuas rau txheej txheej thiab cov txheej tsis muaj dej". Nws zoo thiab seb nws yog qhov haum rau kev txiav txim ncaj qha txiav txim siab ntawm cov nplaum, cov nyhuv tsis txaus ntseeg ntawm cov dej lim dej. Tshwj xeeb tshaj yog nyob rau thaj chaw tau ntev rau ntev- Lub rooj dej yis, thiab chav dej, thiab cov chav dej, thiab cov chaw ua haujlwm tseem ceeb dua.
