Ipayipi lensimbi liqinile, kulula ukusebenza ngalo futhi alibizi, kodwa ngisho noketshezi olugqwala kancane lungawadla ngokushesha, ukusuka ngaphakathi nangaphandle, lubeke umkhawulo kakhudlwana ubude bokuphila kwalo.I-nonmetallic piping, i-fiberglass kanye ne-thermoplastics, ayinawo amandla angokomzimba wamapayipi ensimbi, kodwa inokumelana okuhle kakhulu namakhemikhali.Amapayipi afakwe ulayini wepulastiki ahlanganisa amasistimu amapayipi angcono kakhulu omabili abe yinto eyodwa.
Amapayipi amapayipi anomugqa wepulasitiki ahlinzeka ngokumelana kwamakhemikhali kwamapulasitiki namandla emvelo ensimbi, noma amasistimu amapayipi ensimbi eyingxubevange.Lokhu kuhle kakhulu ekuphatheni ama-asidi, izinto ezibolayo nezinto eziyingozi.Ipayipi yepulasitiki efakwe umugqa ingenziwa ngokukhululekile noma ikhiyelwe ku-liner, noma kunjalo, i-liner ekhiyiwe inciphisa umphumela womehluko ku-coefficient yokwandisa phakathi kwensimbi ne-liner.
Kuningi okungelona iqiniso endaweni yemakethe mayelanaIpayipi elinomugqa we-PTFE.Indlela abanye abakhiqizi bamapayipi anemigqa yepulasitiki abenza ngayo uholela ekutheni ukholwe ukuthi iyisixazululo sazo zonke izidingo zakho zamapayipi afakwe ulayini wepulasitiki futhi izosingatha zonke izimo zesevisi kusukela komnene kuye koyingozi.Lokho akulona iqiniso.Amasistimu wamapayipi anemigqa ye-PTFE athambekele ezinkingeni ezimbalwa ezibalulekile:
1. Ipayipi elinomugqa we-PTFE kanye nokufakwa kukalayini we-PTFE kufanele kukhishwe umoya ngokuya ngemininingwane ye-ASTM yepayipi elifakwe ulayini wepulasitiki kanye nokufakwa kolayini bepulasitiki, F-1545.I-PTFE iyi-fluoropolymer evuleleka kakhulu esihambisana nayo futhi ngenxa yokuthi inomoya, yonke into engena kulayini idedelwa emkhathini.
2. I-PTFE inezakhiwo ezimpofu kakhulu zemishini yanoma iyiphi i-fluoropolymer esihambisana nayo.Amalunga ohlelweni lwamapayipi afakwe kulayini we-PTFE ahlala ethintwa ukugeleza okuhlangene nokugeleza okubandayo njengoba kuchazwe kusixhumanisi sezindaba ezishisayo esingezansi.Amajoyinti aqinile abalulekile ekuthembekeni kwesistimu yamapayipi anomugqa wepulasitiki.Okuwukuphela kwento embi kakhulu kunokudedela umkhiqizo wakho emkhathini ukuwulahla kubasebenzi, phansi, noma ezintweni zokusebenza ngelunga elivuzayo.
3. I-PTFE inhlaka ye-fluoropolymer engabizi kakhulu esetshenziswa kumapayipi anomugqa wepulasitiki kanye nokufakwa komugqa wepulasitiki.Kuyi-15 kuya ku-20% yezindleko zamanye ama-fluoropolymer resins.I-trade off ukuthi unikezela ukumelana ne-permeation okuhle kakhulu kanye nezakhiwo zemishini ukuze wonge imali.Amapayipi epulasitiki anemigqa esetshenziswa kakhulu ukuthwala amakhemikhali ayingozi futhi ayingozi empilweni.
Isikhathi sokuthumela: Nov-24-2018