Vim li cas Fiberglass Mesh Joint Daim Kab Xev "Tsis Lo"? Tej zaum koj yuav tau hla kev npaj nto
Tso lus
Nws yog ib qho kev tsis txaus siab uas peb hnov yuav luag txhua hnub:"Fiberglass mesh sib koom daim kab xev tsuas yog yuav tsis ua raws."Txawm li cas los xij, hauv ntau dua 90% ntawm cov neeg mob, daim kab xev tsis yog tus neeg ua txhaum - qhov kev npaj saum npoo yog. Yog tias tsis muaj lub substrate npaj tau zoo, txawm tias qhov siab tshaj - qib nplaum tsis tuaj yeem tsim daim ntawv cog lus ruaj khov.
Nto Cov Kab Mob
Roj, plua plav, thiab pwm- tso tawm cov khoom seem tsis pom ntawm lub qhov muag tab sis ua rau muaj kev puas tsuaj rau adhesion. Silicone-raws li cov neeg ua haujlwm tso tawm, tshwj xeeb, tuaj yeem txo cov tawv nqaij kom txog li 70%. Ib qho yooj yim kuab tshuaj so (acetone los yog IPA) ua ntej daim ntawv thov tshem tawm cov kab mob no thiab restores lub ntuj reactivity.
Moisture
Cov dej molecules sib tw rau tib qhov chaw nquag uas cov nplaum yuav tsum ntub tawm. Txawm hais tias microscopic condensation ntawm lub substrate txias yuav tsim ib tug tsis muaj zog ciam teb txheej. Nco ntsoov xyuas kom qhov chaw qhuav kom huv si - thiab yog tias koj ua haujlwm hauv cov huab cua ntub, cia sijhawm ziab ntxiv tom qab ntxuav.
Loose Oxides thiab Friable Coatings
Ntawm cov hlau, cov hnub nyoog sib xyaw, lossis cov xim pleev xim yav dhau los, cov txheej txheej xoob los yog hmoov txheej tiv thaiv kev sib tsoo tshuab. Lub teeb puas (120–180 grit) ua raws li los ntawm re- ntxuav tshem tawm cov yeeb yaj kiab tsis yooj yim no thiab muab cov qauv tshiab, micro-roughened thauj tog rau nkoj rau cov nplaum.
Tsawg-Plastics zog
Cov substrates zoo li polyethylene, polypropylene, los yog hmoov-coated finishes muaj zog deg tsawg. Ntawm no, ib qho tshwj xeeb primer los yog nplaim taws kho mob yog yuav tsum tau - tsis yog khoom kim heev. Hla cov kauj ruam no txhais tau hais tias cov nplaum yuav zaum saum es tsis yog daim ntawv cog lusnrogqhov chaw.
Bonding yog ib qho cuab yeej cuab tam, tsis yog ib daim kab xev. Thaum koj kho qhov chaw npaj ua ib feem ntawm cov txheej txheem engineering - tsis yog tom qab - pebfiberglass mesh daim kab xevmuab kev ntseeg siab, siab -shear kev ua tau zoo txawm tias nyob rau hauv tshav kub los yog av noo. Tau ntsib ib qho chaw tsis paub meej? Peb muab kev xeem ua ntej- thov kom tshem tawm kev kwv yees. Qhov ntawd yog qhov txawv ntawm kev cia siab rau ib daim ntawv cog lus thiab ua kom muaj ib qho.
Yog tias koj muaj lus nug lossis xav tau kev pab, thov koj xav tiv taujtiv tauj peb:
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