Ha basebelisi ba bangata ba khethaLiphaephe tsa PE, hangata ho bonolo ho etsa liphoso ka lebaka la ho se utloisise ka ho lekaneng.Ha ba tsebe hore na ba sebelise lipeipi tsa polypropylene tse sa reroang kapa lipeipi tsa polyethylene bakeng sa merero ea phepelo ea metsi kahong.Phapano ke efe pakeng tsa tsona?Lesela la boea?E re ke u tsebise eona.
Lintlha tse kholo ke tse latelang:
Metsing a nooang, PE hangata e sebelisoa e le phala ea metsi a batang;PPR (lisebelisoa tse khethehileng tsa metsi a chesang) li ka sebelisoa e le phala ea metsi a chesang;ho boetse ho na le PPR (lisebelisoa tsa metsi a batang) tse sebelisoang e lepeipi ea metsi a batang;Haeba e le phala ea metsi a chesang, ho hlakile hore PPR e molemo;(haeba e le phala ea metsi a nooang bakeng sa mokhabiso oa lapeng, ha ho hlokahale ho khetholla, ha e le hantle PPR e sebelisoa ho feta PE) Haeba u etsa lipeipi tsa metsi a batang, u ka bua ka liphapang tse latelang:
1. Papiso ea ho hanyetsa mocheso pakeng tsa pipe ea metsi ea PPR lePepe ea metsi ea PE.
Tlas'a ts'ebeliso e tloaelehileng, pipe ea metsi ea PE e na le mocheso o tsitsitseng oa 70 ° C le mocheso oa -30 ° C.Ka mantsoe a mang, maemong a joalo a mocheso, tšebeliso ea nako e telele ea liphaephe tsa metsi tsa PE e bolokehile ebile e ka tšeptjoa.
Tlas'a tšebeliso e tloaelehileng, pipe ea metsi ea PPR e na le mocheso o tsitsitseng oa 70 ° C le mocheso oa -10 ° C.E boetse e bontša hore sebakeng sena sa mocheso, tšebeliso ea nako e telele ea liphaephe tsa metsi tsa PPR e boetse e sireletsehile ebile e ka tšeptjoa.Ho phethoa ka hore liphaephe tsa metsi tsa PE li na le ho hanyetsa mocheso o phahameng joaloka liphaephe tsa metsi tsa PPR.Leha ho le joalo, liphaephe tsa metsi tsa PE li molemo ho feta lipeipi tsa metsi tsa PPR mabapi le ts'ebetso e tlaase ea mocheso.
2.phapang lipakeng tsa lipeipi tsa metsi tsa PE le lipeipi tsa metsi tsa PPR mabapi le bohloeki
Karolo e ka sehloohong ea limolek'hule tsa lik'hemik'hale tsa pipe ea metsi ea PE ke polyethylene.Babali ba ithutileng k'hemistri ea lintho tse phelang ba tseba hore sebopeho sa sehlahisoa sena ke liathomo tse peli tsa carbon tse kopantsoeng le liathomo tse hlano tsa hydrogen, e 'ngoe ea tsona e kopantsoe le athomo ea carbon ka tlamo e habeli, ebe ethylene Molek'hule e le 'ngoe ea polymer e entsoe ka polymerized ka tsela e itseng, 'me sehlahisoa se joalo ke sehlahisoa sa polyethylene.Joale pipe ea metsi ea PPR ke eng?Karolo e ka sehloohong ea pipe ea metsi ea PPR ke propylene, ke hore, liathomo tse tharo tsa carbon li kopantsoe le liathomo tse supileng tsa hydrogen, 'me athomo e le' ngoe ea hydrogen e kopantsoe le athomo ea carbon e nang le tlamo e habeli, ebe sehlahisoa se entsoeng ka mor'a polymerization ke sehlahisoa sa polypropylene.Lihlahisoa tse joalo li batla li tšoana le tsa bohloeki le polokeho.Ntho ea bohlokoa ke hore na lisebelisoa tse tala tse sebelisoang ke khoebo li finyella litlhoko, eseng phapang pakeng tsa lihlahisoa tse peli.Hape ha ho na motheo ho phatlalatsa hore liphaephe tsa metsi tsa PE li hloekile ho feta lipeipi tsa metsi tsa PPR likoranteng.Liphaephe tsohle tsa metsi tsa PE tse tšoanelehang le lihlahisoa tsa lipeipi tsa metsi tsa PPR li tlameha ho etsa tlhahlobo ea likhoerekhoere (ntle le lihlahisoa tseo e seng tsa nnete le tse se nang thuso).Hape ke thetso ho bareki ho bolela hore lipeipi tsa metsi tsa PE li hloekile ebile li bolokehile ho feta lipeipi tsa metsi tsa PPR.
3. Modulus oa elastic
Modulus ea elastic ea pipe ea metsi ea PPR ke 850MPa.Pipe ea metsi ea PE ke ea polyethylene e bohareng, 'me modulus ea eona e ka bang 550MPa feela.E na le ho feto-fetoha ha maemo hantle le ho sa tsitsa ho lekaneng.E sebelisoa tšimong ea ho haha phepelo ea metsi.Ha e ntle.
Thermal conductivity: Pipe ea metsi ea PPR ke 0.24, pipe ea metsi ea PE ke 0.42, e batlang e phahame habeli.Haeba e sebelisoa ho futhumatsa fatše, ena ke ntlha ea eona e matla.Ho senya mocheso o motle ho bolela hore phello ea mahlaseli a mocheso e molemo, empa e sebelisoa liphaepheng tsa metsi a chesang.Bothata ke hore haeba mocheso oa mocheso o le motle, tahlehelo ea mocheso e tla ba khōlō, 'me mocheso oa holim'a phala o tla ba o phahameng, oo ho leng bonolo ho o chesa.
4. Ts'ebetso ea welding
Le hoja liphaephe tsa metsi tsa PPR le liphaephe tsa metsi tsa PE li ka cheseha ka mocheso o chesang, liphaephe tsa metsi tsa PPR li bonolo ho sebetsa, 'me ho phunyeha ha lipeipi tsa metsi tsa PPR ho pota-potile, ha ho phunyeha ha liphaephe tsa metsi tsa PE ho sa tloaeleha ebile ho le bonolo ho thibela;mocheso oa ho tjheseletsa o boetse o fapane, liphaephe tsa metsi tsa PPR ke 260 ° C, liphaephe tsa metsi tsa PE Mocheso ke 230 ° C, 'me mochine o khethehileng oa tjheseletsa oa liphaephe tsa metsi tsa PPR' marakeng o bonolo ho o tšela le ho baka ho tsoa ha metsi.Ho phaella moo, hobane thepa ea phala ea metsi ea PE e bonolo ho oxidize, lisebelisoa tse khethehileng li lokela ho sebelisoa ho senya letlalo la oxide holim'a metsi pele ho tjheseletsa, ho seng joalo phala e kopantsoeng e le kannete e ke ke ea etsoa, 'me phala e atisa ho tsoa metsi. kaho e khathatsa le ho feta.
5. Matla a amang mocheso o tlase:
Ntlha ena ke matla a thepa ea pipe ea metsi ea PE ho latela matšoao.Liphaephe tsa metsi tsa PPR li matla ho feta lipeipi tsa metsi tsa PE, 'me lipeipi tsa metsi tsa PE li tenyetseha ho feta lipeipi tsa metsi tsa PPR.Sena se khethoa ke mofuta oa thepa, empa ha ho na moelelo ho feteletsa ho bata ho batang ha liphaephe tsa metsi tsa PPR., Lipeipi tsa metsi tsa PPR li 'nile tsa sebelisoa Chaena ka lilemo tse fetang leshome.Bahlahisi ba fokolitse butle-butle likotsi tse patiloeng tse bakoang ke ho tšoara ka tsela e fosahetseng ka ho paka ka katleho le ho matlafatsa phatlalatso.Ho sebetsana ka sehlōhō le kaho le hona ho tla baka lipeipi tsa metsi tsa PE holim'a metsi.Mengwapo le mapetsong a khatello ea maikutlo;ha e sebelisoa tlas'a maemo a mocheso a tlaase, phaephe efe kapa efe e tlameha ho koalloa, ho seng joalo katoloso ea molumo e bakoang ke leqhoa e tla etsa hore liphaephe li hoama le ho peperana.Pipe ea PPR ke phala e loketseng bakeng sa lipeipi tsa metsi a nooang, 'me tikoloho ea ka ntle ha e ntle joaloka ka tlung.Ho sebelisoa liphaephe tsa PE, tseo hape e leng lisebelisoa tse loketseng liphaephe tse kholo tsa lipeipi tsa metsi.
6. Boholo ba phala
Boholo bo boholo bo ka etsoang ka pipe ea PE ke dn1000, 'me tlhaloso ea PPR ke dn160.Ka hona, lipeipi tsa PE hangata li sebelisoa e le lipeipi tsa drainage, 'me lipeipi tsa phepelo ea metsi hangata ke PPR.
Nako ea poso: Jun-30-2023
