1. Ipayipi ye-PE yemigodi
Phakathi kwazo zonke iiplastiki zobunjineli, i-HDPE ineyona nto ixhathisayo yokunxiba kwaye yeyona ibonakalayo. Ukuphakama kobunzima bemolekyuli, kokukhona i-material ingagugi kakhulu, ide igqithe kwizinto ezininzi zentsimbi (ezifana ne-carbon steel, stainless steel, bronze, njl. njl.). Ngaphantsi kweemeko ze-corrosion eqinile kunye nokugqoka okuphezulu, ubomi benkonzo ngama-4-6 amaxesha ombhobho wensimbi kunye namaxesha angama-9 e-polyethylene eqhelekileyo; Kwaye impumelelo yokuhambisa iphuculwe ngama-20%. Iipropati ezibuyiswayo kunye ne-antistatic zilungile kwaye ziyahlangabezana neemfuno eziqhelekileyo. Ubomi benkonzo ye-downhole bungaphezulu kweminyaka engama-20, kunye neenzuzo zezoqoqosho eziphawulekayo, ukuchasana kwempembelelo, ukuxhathisa ukunxiba kunye nokuxhathisa kabini.
2. Umbhobho welindle we-PE
Umbhobho we-PE wokulahlwa kwamanzi amdaka ukwabizwa ngokuba ngumbhobho we-polyethylene woxinaniso oluphezulu, oku kuthetha ukuba i-HDPE ngesiNgesi. Olu hlobo lombhobho luhlala lusetyenziswa njengokhetho lokuqala lobunjineli bakamasipala, olusetyenziswa ikakhulu kushishino lokucoca ugutyulo. Ngenxa yokunganyangeki kwayo, ukuxhathisa kwe-asidi, ukuxhathisa kwe-corrosion, ukumelana nobushushu obuphezulu, ukumelana noxinzelelo oluphezulu kunye nezinye iimpawu, ngokuthe ngcembe kwatshintsha indawo yemibhobho yemveli efana nemibhobho yentsimbi kunye nemibhobho yesamente emarikeni, ngakumbi ngenxa yokuba lo mbhobho ulula ngobunzima. kwaye kulula ukuyifaka kunye nokuhambisa, kwaye lukhetho lokuqala lwezinto ezintsha. Abasebenzisi kufuneka bahlawule ingqalelo ekhethekileyo kula manqaku alandelayo xa bekhetha imibhobho eyenziwe ngolu hlobo: 1. Nika ingqalelo ekhethekileyo ekukhethweni kwezinto eziluhlaza kwiipayipi zeplastiki. Kukho amawaka amabakala ezinto ezikrwada ze-polyethylene, kwaye kukho izinto eziluhlaza ezisezantsi ngamawaka aliqela eeyuan ngetoni nganye kwimarike. Iimveliso eziveliswe yile mveliso eluhlaza azikwazi ukwakhiwa, ngaphandle koko, ilahleko yokusebenza kwakhona iya kuba nkulu. 2. Ukukhethwa kwabavelisi bemibhobho kuya kuba phantsi kwabenzi abasemthethweni kunye nabachwephesha. 3. Xa ukhetha ukuthenga imibhobho ye-PE, hlola abavelisi kwindawo apho ukuba banamandla okuvelisa.
3. Umbhobho wonikezelo lwamanzi we-PE
Imibhobho ye-PE yonikezelo lwamanzi yimveliso yokutshintshwa kwemibhobho yentsimbi yemveli kunye nemibhobho yamanzi okusela ye-PVC.
Umbhobho wokuhambisa amanzi kufuneka uthwale uxinzelelo oluthile, kwaye i-PE resin ene-molecular weight high kunye neempawu ezintle zomatshini, ezifana ne-HDPE resin, idla ngokukhethwa. I-resin ye-LDPE inamandla aphantsi, ukunyanzeliswa koxinzelelo oluphantsi, ukunyanzeliswa okungahambi kakuhle, ukuzinza okungahambi kakuhle kwe-dimensional ngexesha lokubumba kunye noxhulumaniso olunzima, ngoko ke ayifanelekanga njengezinto zombhobho wokuhambisa amanzi. Nangona kunjalo, ngenxa yesalathisi esiphezulu sococeko, i-PE, ngakumbi i-resin ye-HDPE, ibe yinto eqhelekileyo yokuvelisa imibhobho yamanzi okusela. I-resin ye-HDPE ine-viscosity ephantsi ye-melt, i-fluidity enhle kunye nokucutshungulwa okulula, ngoko ke isalathisi sayo se-melt sinokukhetha okubanzi, ngokuqhelekileyo i-MI iphakathi kwe-0.3-3g / 10min.
Ixesha lokuposa: May-19-2021