Ibali lePlastiki libali lempumelelo.Kwaye isiseko saloo mpumelelo ngumnqweno womntu wobomi obungcono.Iiplastiki - ngaphezu kwayo nayiphi na enye into, iye yabangela umdla wenzululwazi.Ukuyila iiplastiki ezineempawu zobugcisa ezifanelekileyo ukwenza umsebenzi libali elingapheliyo.
Umbhobho wePlastikiIinkqubo zizalisekisa iintlobo ngeentlobo zeemfuno zenkonzo.Ezi mfuno zichazwe ngokuchanekileyo kwiseti epheleleyo yeMigangatho yeMveliso yaseYurophu kwisicelo ngasinye ecaleni kweempawu zabo ezithile.Umzekelo:
- Ukuhanjiswa kwamanzi okusela: Iimfuno zococeko
- Ukuhanjiswa kwerhasi: Ezona mfuno zoKhuselo ziPhakamileyo
- Imibhobho yePlastiki yokufudumeza okukhazimlayo kunye nokufudumeza umgangatho: Ukumelana nobushushu kumashumi eminyaka
- Ukusetyenziswa kogutyulo: Ukumelana neekhemikhali eziphezulu
Imibhobho yeplastiki ikwazi ngokugqibeleleyo ukuzalisekisa imfuno ethile kwisicelo ngasinye.Benza njalo ngezinga eliphezulu lokusebenza kwixesha elide lobomi kunye nokuthembeka kunye nokhuseleko.
Umba ongundoqo wempumelelo uphunyezwa ngokugcina amanqanaba omgangatho ophezulu.Kwiimveliso zemibhobho yeplastiki, la manqanaba achazwe ngokusondeleyo kwimigangatho eyahlukeneyo.
Imiba emibini ephambili ibaluleke kakhulu ekusebenzeni okugqwesileyo kwemibhobho yeplastiki: ukuguquguquka kunye nobomi obude.
Ukuba bhetyebhetye:Imibhobho yePlastiki ihlelwa ngokuqina kweringi.Iiklasi ezikhethwayo zokuqina njengoko zichazwe kwimigangatho emininzi yeemveliso zezi: SN2, SN4, SN8 kunye ne-SN16.Ubunzima bendandatho yemibhobho bubalulekile ukuba baya kumelana nokulayishwa kwangaphandle ngexesha lofakelo.Okukhona uphezulu umzobo, kokukhona uqina umbhobho!
Emva kofakelo oluchanekileyo, ukunxaxha kombhobho kuhlala kulinganiselwe kakhulu kodwa kuya kuqhubeka ukuya kwinqanaba elithile okwethutyana.Ngokunxulumene nomhlaba apho ifakwe khona, umbhobho weplastiki uziphatha ngendlela 'eguquguqukayo'.Oku kuthetha ukuba ukuphambuka okuqhubekayo ngexesha kuxhomekeke ekuhlaleni komhlaba ojikeleze umbhobho.
Ngokwenene, umbhobho ulandela ukunyakaza komhlaba okanye ukuhlaliswa kwe-backfill, njengoko iingcali zibiza.Oku kuthetha ukuba ukufakwa kakuhle kwemibhobho kuya kubangela ukuhlaliswa kakuhle komhlaba.Ukuphambuka okungaphaya kuya kuhlala kulinganiselwe.
Kwimibhobho eguquguqukayo, ukulayishwa komhlaba kuhanjiswe kwaye kuxhaswe ngumhlaba ojikelezayo.Uxinzelelo kunye noxinzelelo olubangelwa ukuphambuka kombhobho kuya kwenzeka ngaphakathi kwodonga lombhobho.Nangona kunjalo, uxinzelelo olubangwayo alunakuze ludlule kumaxabiso avumelekileyo amiselweyo.
Ukuziphatha kwe-thermoplastic yempahla yombhobho yinto yokuba uxinzelelo olubangelwayo luphumla kwinqanaba eliphantsi kakhulu.Kufuneka kuqatshelwe ukuba iintlobo ezibangelwayo zingaphantsi kakhulu kumanqanaba avumelekileyo.
Oku kuziphatha okuguquguqukayo kuthetha ukuba umbhobho awuyi kusilela.Iya kubonisa kuphela ukuphambuka okungaphezulu ngelixa igcina umsebenzi wayo ngaphandle kokwaphuka.
Nangona kunjalo, imibhobho eqinile ngokwendalo yayo ayiguquki kwaye ayiyi kulandela iintshukumo zomhlaba.Baya kuthwala yonke imithwalo yomhlaba, nokuba yintoni na ukuhlaliswa komhlaba.Oku kuthetha ukuba xa umbhobho oqinileyo uxhomekeke ekulayisheni ngokugqithiseleyo, uya kufikelela kumda wamaxabiso oxinzelelo ngokukhawuleza kwaye aphule.
Ngoko ke kunokugqitywa ukuba ukuguquguquka kwemibhobho yeplastiki kufana nokuba kunika umlinganiselo owongezelelweyo wokhuseleko.Imibhobho engcwatywayo ifuna ukuguquguquka.
Ixesha elide loBomi:Imibhobho yeplastiki isetyenziswe ngempumelelo kwinkonzo iminyaka engaphezu kwama-50.Ubomi obuqikelelweyo beenkqubo zemibhobho yeplastiki budlula iminyaka eyi-100.Izifundo ezininzi zeshishini ziye zabonisa le prognosis.
Izinto zombhobho wePlastiki zihlala zihlelwa ngesiseko sovavanyo lwexesha elide loxinzelelo.Amaxesha okusilela okulinganisiweyo njengomsebenzi woxinzelelo eludongeni lombhobho lubonakaliswe kwinto ebizwa ngokuba yiRegression Curves.
I-extrapolation esekelwe kumlinganiselo wamaxesha okusilela kubalwe ukufikelela kwiminyaka engama-50.Uxinzelelo oluqikelelweyo lokungaphumeleli kwiminyaka engama-50 lwathathwa njengesiseko sohlelo.Eli xabiso libizwa ngokuba nguMRS, Ubuncinci boxinzelelo olufunekayo, kwiminyaka engama-50.
Umba woKhuseleko:Ukususela kwixabiso le-MRS elifanelekileyo, into ekhuselekileyo isetyenziselwa ukufika kuxinzelelo loyilo apho i-PN yoxinzelelo oluqhelekileyo lubalwe.Imiba yokhuseleko eqhelekileyo yeya PE 1,25 kunye nePVC 2,0.Uxinzelelo olufanelekileyo oluqhelekileyo lombhobho weplastiki ngoko ke lubandakanya into ekhuselekileyo, ekhokelela kuyilo olukhuselekileyo lwenkqubo yokubhobhoza.
Ngoko ke kugxininiswe ukuba olu luhlu lwemibhobho yeplastiki alunanto yakwenza nobomi bokwenene obuqikelelweyo bemibhobho yeplastiki.Oku kungathatha ixesha elide.Uphando oluninzi lusanda kupapashwa olubonisa ukuba imibhobho ye-PVC kunye ne-PE iya kuhlala ixesha elide ngaphezu kweminyaka eyi-100.
Ixesha lokuposa: Feb-27-2018