Nekuenderera mberi kwekuvandudzwa kweminda yemafuta negasi ekumahombekombe, mapaipi ekutakura huwandu hwemafuta ekunze uye gasi ari kukura.Parizvino kupfekedza chimiro chepasi pemvura mapaipi anoshandiswa kunyanya 3LPE neFBE.3LPE yenguva refu yekushandisa tembiricha kazhinji haipfuure makumi manomwe℃, kwenguva pfupi kusvika ku80℃.Kana iri yekutakura kwemafuta asina kuchena tembiricha inodarika 80℃, shandisa 3LPE coating chimiro zviri pachena kuti haisi kusangana nezvinodiwa zvehunyanzvi.Nepo tembiricha yekushandiswa kwenguva refu FBE coating inogona kusvika 115℃, kusangana nezvinodiwa pamusoro pekugadzira tembiricha, asi FBE yekupfekedza brittle, kusashivirira kwemagetsi kukuvadzwa mukufambisa uye kumahombekombe kwepombi-kuisa, anti-corrosion coating kukuvara kwakanyanya, Parizvino mapaipi epasi pegungwa kazhinji haakurudzire kushandiswa kwecorrosion nenzira ye single layer FBE.

Kugadzirisa zvinobudirira mamiriro ekufambisa pakupisa kwepasi pepipeline corrosion matambudziko, nyika dzekunze dzakabudirira 3LPP yekuvhara chimiro kune pombi, senge Gulf yeMexico yakadzika mvura yepasi pemvura pombi uye UK North Sea mafuta uye gasi pombi, nezvimwewo, anoshandiswa 3LPP. chimiro, asi 3LPP coating yakaiswa kune subsea pombi munyika hapana muenzaniso.

Polypropylene ine yakanakisa mechanicha zvinhu, goho rayo, kusimba, kudzvanya simba, kuoma, elasticity uye kupfeka kusamira pane yakakwira density uye saka polyethylene (HDPE) yakakwira, uye iyo polypropylene yakadzika kwazvo kunyudza mvura, mvura 24h Kunyura kwemvura kwe0.01% chete, yakaderera zvakanyanya kupfuura HDPE.Polypropylene inopikisa kugadzikana kwemakemikari, kuvharwa kwemagetsi, uye kuderera kwehudhi pane polyethylene.Panyaya yekudzivirira kupisa, kushandiswa kwenguva refu kwe polyethylene yakagadziridzwa pakupisa kwe -30 ~ 110.℃.3LPP inogadzirwa pahwaro hwe3LPE yekujatira pane yakanakisa mashandiro e-anti-corrosion coating.3LPP 3LPE musimboti uye chimiro chakafanana neicho chakatorwa musimbi yepasi fusion yakasungirirwa epoxy (FBE), kuwedzera kunamatira kune simbi, pakati pe polypropylene copolymer adhesive (PPA) layer, uye kunze kwe polypropylene (PP) chisungo chakasimba, zvese zvakakwirira kuramba kune kukuvara kwemagetsi kugona, uye kuramba kwakanaka kune cathodic stripping performance.3LPP yakagadziridzwa nekuvhara chimiro, kushandiswa kwekushisa pamusoro pe110℃, kupikisa kwayo kwakanaka kwekuora uye kuita kwekushisa kwepamusoro kuhwina tarisiro yemusika wakafara, tembiricha yakakwira haigadzirire zvimwe zvinoshomeka, kuti isvike pakupisa kwepamusoro uye chinangwa chemvura yakadzika yekushandisa, iri kubuda yakawedzera anti-corrosion coating. pasi rose.