Mbale ya Pulasitiki Yothira Madzi, Ndi mbale yopangidwa ndi polima yokhala ndi mamolekyulu ambiri yokhala ndi ntchito yothira madzi. Kudzera mu njira yapadera yochizira, imapanga mawonekedwe osafanana pamwamba, omwe amatha kutumiza chinyezi kunja, kuchepetsa kuthamanga kwa hydrostatic kwa wosanjikiza wosanjikiza wosanjikiza madzi, ndikukwaniritsa zotsatira zosalowa madzi.
1. Zipangizo zazikulu zopangira bolodi la pulasitiki
1, Polystyrene (Machiuno)
Polystyrene ndi thermoplastic yodziwika bwino yokhala ndi njira yabwino kwambiri yogwiritsira ntchito komanso yolimba kwambiri. Popanga ma board a pulasitiki otulutsira madzi, polystyrene imakonzedwa kukhala mapepala okhala ndi mapangidwe ozungulira, ndipo njira zotulutsira madzi zimapangidwa pogwiritsa ntchito njira zopopera kapena zotulutsira madzi. Komabe, polystyrene ndi yofooka chifukwa cha nyengo komanso kukana dzimbiri, ndipo imatha kukalamba ndi kusweka ikakumana ndi malo akunja kwa nthawi yayitali.
2, Polyethylene (HDPE)
Polyethylene ndi thermoplastic yolimba kwambiri komanso yolimba kwambiri yokhala ndi dzimbiri labwino kwambiri, nyengo yabwino komanso yolimba. Popanga ma board a pulasitiki otulutsa madzi, polyethylene imatha kukonzedwa kukhala mapepala okhala ndi njira zotulutsira madzi mosalekeza, zomwe zimalumikizidwa pamodzi ndi kuwotcherera kutentha kapena kukhazikika kwa makina kuti apange njira yonse yotulutsira madzi. Polyethylene drainage board imakhala ndi nthawi yayitali yogwira ntchito komanso magwiridwe antchito abwino otulutsira madzi, ndipo ingagwiritsidwe ntchito pama projekiti oteteza madzi monga zipinda zapansi ndi denga.
3, Polyvinyl chloride (PVC)
Polyvinyl chloride ndi thermoplastic yokhala ndi mphamvu zambiri zogwirira ntchito komanso yolimba kwambiri. Poyerekeza ndi polystyrene ndi polyethylene, PVC imakhala ndi mphamvu yoletsa moto komanso yolimbana ndi dzimbiri. Popanga bolodi la pulasitiki lotulutsa madzi, polyvinyl chloride imakonzedwa kukhala bolodi yokhala ndi mawonekedwe ozungulira, ndipo njira zotulutsira madzi zimapangidwa ndi njira yotulutsira madzi kapena kuyika calender. Bolodi la PVC lotulutsa madzi silimangokhala ndi mphamvu zabwino zotulutsira madzi, komanso limalimbana ndi dzimbiri la asidi ndi maziko komanso ziwopsezo za moto.
4, Polypropylene (PP)
Polypropylene ndi thermoplastic yopepuka, yolimba kwambiri yokhala ndi nyengo yabwino komanso yolimba. Popanga ma board a pulasitiki otulutsira madzi, polypropylene imakonzedwa kukhala mapepala okhala ndi njira zotulutsira madzi mosalekeza, zomwe zimalumikizidwa pamodzi ndi kuwotcherera kutentha kapena kukhazikika kwa makina. Polypropylene drainage board imakhala yopepuka komanso imagwira ntchito bwino potulutsira madzi, zomwe ndizoyenera makina otulutsira madzi m'misewu, m'misewu ndi mapulojekiti ena.
2. Mphamvu ya kusankha zinthu zopangira pa ntchito ya bolodi lothirira madzi la pulasitiki
Kusankha zipangizo zopangira kumakhudza kwambiri momwe bolodi la pulasitiki lotulutsira madzi limagwirira ntchito. Mabolodi otulutsira madzi opangidwa ndi zipangizo zosiyanasiyana amasiyana mphamvu, kukana dzimbiri, kukana nyengo, kuchedwa kwa moto, ndi zina zotero. Chifukwa chake, posankha bolodi la pulasitiki lotulutsira madzi, kuganizira mozama kuyenera kupangidwa malinga ndi zosowa za uinjiniya ndi momwe zinthu zilili, ndipo zipangizo zoyenera kwambiri ndi mtundu wa bolodi lotulutsira madzi ziyenera kusankhidwa.
Monga momwe taonera pamwambapa, zinthu zopangira pulasitiki drainage board makamaka zimaphatikizapo polystyrene, polyethylene, polyvinyl chloride ndi polypropylene. Mabodi otulutsa madzi opangidwa ndi zinthu zosiyanasiyana ali ndi magwiridwe antchito osiyanasiyana, choncho ayenera kusankhidwa malinga ndi zosowa zaukadaulo.
Nthawi yotumizira: Januwale-16-2025
