Raws li peb txhua tus paub, cov yam ntxwv tseem ceeb ntawm cov khoom ntim tshuaj pleev ib ce tseem ceeb roj lub raj mis iav yog: tsis muaj mob, tsis muaj qab hau; pob tshab, zoo nkauj, zoo barrier zog, airtight, ntau raw cov ntaub ntawv, thiab cov tseem ceeb roj lub raj mis iav khoom yog tsis tshua muaj nqi thiab yuav siv tau rau ntau yam turnover. Lub raj mis muaj qhov zoo ntawm kev tiv thaiv tshav kub, kev tiv thaiv siab, thiab kev ua haujlwm tu, thiab tuaj yeem ua kom tsis muaj menyuam thaum kub kub lossis khaws cia ntawm qhov kub thiab txias. Cov ntaub ntawv tseem ceeb ntawm cov roj tseem ceeb lub raj mis iav cov khoom siv yog ntuj ore, quartz pob zeb, caustic soda, limestone, thiab lwm yam. Cov khoom siv iav ntawm lub raj mis roj tseem ceeb muaj qib siab ntawm pob tshab thiab corrosion tsis kam, thiab cov khoom siv yuav tsis hloov pauv. tiv tauj nrog feem ntau cov tshuaj pleev ib ce.
Txawm li cas los xij, cov khoom siv iav ntawm lub raj mis roj tseem ceeb kuj tseem muaj qhov tsis zoo, xws li qhov hnyav hnyav, kev thauj mus los thiab cov nqi khaws cia, kev cuam tshuam, thiab fragility. Fragility yog ib qho teeb meem nyob rau hauv kev siv cov khoom tseem ceeb roj lub raj mis iav, uas ua rau cov iav cov khoom tseem ceeb roj lub raj mis raug kev txom nyem ntau yam kev txwv nyob rau hauv niaj hnub siv. Yog li, yuav ua li cas los daws qhov teeb meem tsis yooj yim ntawm cov roj tseem ceeb fwj ua los ntawm cov ntaub ntawv iav?
Cov khoom siv iav yog ib qho nyuaj tab sis tsis yooj yim, muaj cov pob tshab zoo, kub tsis kam, corrosion kuj thiab lwm yam khoom; Nyob rau tib lub sijhawm, steel yog ib qho nyuaj thiab tsis tawg, thiab tseem muaj cov yam ntxwv ntawm qhov kub thiab txias. Yog li cov neeg tau pib xav tias yog tias lawv tuaj yeem ua ib hom iav uas tsis yog tsuas yog muaj cov khoom ntawm iav hardness, kub ua hauj, thiab corrosion kuj, tab sis kuj muaj cov yam ntxwv ntawm hardness thiab unbreakable zoo li hlau, ces cov khoom no yuav yog. ntawm kev siv zoo heev. Qhov tshwm sim ntawm FRP tau daws qhov teeb meem tsis yooj yim ntawm cov roj tseem ceeb fwj ua los ntawm cov khoom siv iav. FRP, uas yog fiber ntau reinforced yas, feem ntau yog hais txog kev siv iav fiber reinforced unsaturated polyester, epoxy resin thiab phenolic resin matrix. Reinforced plastics uas siv iav fiber ntau los yog nws cov khoom ua cov khoom siv ntxiv yog hu ua iav fiber reinforced plastics, los yog iav fiber reinforced plastics. Vim muaj ntau hom resins siv, nws yog hu ua polyester fiberglass, epoxy fiberglass, thiab phenolic fiberglass. Ua rau cov khoom siv iav tseem ceeb roj lub raj mis lub teeb thiab tawv, tsis yog-conductive, ruaj khov kev ua tau zoo, siab txhua yam muaj zog, tsawg dua rov ua dua thiab corrosion kuj.