Imininingwane Esheshayo
I-ID yomkhiqizo: EI042502KK
Ububanzi begama: 12mm-110mm
Isilinganiso sokucindezela: 0.25Mpa, 0.4Mpa, 0.6Mpa
Iyakwazi:Amapayipi okunisela anomfutho ophakathi nophezulu asetshenziselwa izingxenye ezingaphansi komhlaba
amapayipi amakhulu njengokunisela kwamapayipi, ukuchelela nge-micro-sprinkler;amapayipi okunisela anengcindezi ephansi can
Gcoba amapayipi egatsha okuchelela ngamapayipi, ukuchelela nge-sprinkler, ama-drip irrigation systems.
Izinga lokushisa elisebenzayo: 0-45 ℃
Imodi yokuxhuma: Ixhunywe ngokuyinhloko ngoxhumano olusheshayo.
I-Dayu Water Saving Group Co., Ltd. yasungulwa ngo-1999. Ibhizinisi likazwelonke lobuchwepheshe obuphezulu elisekelwe e-Chinese Academy of Water Sciences, i-Science and Technology Promotion Centre yoMnyango Wezamanzi, i-Chinese Academy of Sciences, i-Chinese Academy of Engineering kanye nezinye izikhungo zocwaningo lwesayensi.Ifakwe ohlwini lwe-Growth Enterprise Market.Ikhodi yesitoko: 300021. Le nkampani ineminyaka engu-20 yasungulwa futhi ihlezi igxile futhi izinikele ekuxazululeni nasekusebenzeni kwezolimo, izindawo zasemakhaya kanye nemithombo yamanzi.Isithuthuke yaba iqoqo lokonga amanzi ezolimo, ukuhlinzekwa kwamanzi emadolobheni nasezindaweni zasemakhaya, ukuthuthwa kwendle, izindaba zamanzi ahlakaniphile, ukuxhunywa kohlelo lwamanzi, ukuphathwa kwemvelo yamanzi kanye nokubuyiselwa kanye neminye imikhakha.Umhlinzeki wesixazululo sohlelo ochwepheshe kulo lonke uchungechunge lwemboni ehlanganisa ukuhlelwa kwephrojekthi, ukuklama, ukutshalwa kwezimali, ukwakhiwa, ukusebenza, ukuphatha kanye nezinsizakalo zokunakekela.Kungokokuqala kule mboni emkhakheni wokonga amanzi ezolimo eShayina futhi ingumholi emhlabeni jikelele.
I-polyethylene ephezulu-density, igama lesiNgisi elithi "High Density Polyethylene", noma "HDPE" ngamafuphi.I-HDPE iyi-resin ecwebezelayo, engeyona i-polar thermoplastic.Ukubonakala kwe-HDPE yasekuqaleni kumhlophe qhwa, futhi ingxenye encane ishintshashintsha ngokwezinga elithile.I-PE inokumelana okuhle kakhulu namakhemikhali amaningi asekhaya nawemboni.Izinhlobo ezithile zamakhemikhali zingabangela ukugqwala kwamakhemikhali, njengama- corrosive oxidants (concentrated nitric acid), ama-hydrocarbon anuka kamnandi (xylene) nama-halogenated hydrocarbons (carbon tetrachloride).I-polymer ayiyona i-hygroscopic futhi inokumelana kahle nomhwamuko wamanzi, futhi ingasetshenziselwa izinjongo zokupakisha.I-HDPE inezinto ezinhle zikagesi, ikakhulukazi amandla aphezulu e-dielectric of the insulation, okwenza ifaneleke kakhulu izintambo nezintambo.Amabanga aphakathi nendawo kuya aphezulu esisindo samangqamuzana anokumelana nomthelela omuhle kakhulu, ngisho nasezingeni lokushisa elivamile ngisho nasezingeni eliphansi lokushisa elingu-40F.
I-HDPE i-thermoplastic polyolefin ekhiqizwa yi-copolymerization ye-ethylene.Nakuba i-HDPE yethulwa ngo-1956, le pulasitiki ayikafiki ezingeni elivuthiwe.Le nto esetshenziselwa inhloso ejwayelekile ihlala ithuthukisa ukusetshenziswa kwayo okusha nezimakethe.
Izici eziyinhloko
I-HDPE i-non-polar thermoplastic resin ene-crystallinity ephezulu.Ukubonakala kwe-HDPE yasekuqaleni kumhlophe qhwa, futhi ingxenye encane ishintshashintsha ngokwezinga elithile.I-PE inokumelana okuhle kakhulu namakhemikhali amaningi asekhaya nawemboni.Izinhlobo ezithile zamakhemikhali zingabangela ukugqwala kwamakhemikhali, njengama- corrosive oxidants (concentrated nitric acid), ama-hydrocarbon anuka kamnandi (xylene) nama-halogenated hydrocarbons (carbon tetrachloride).I-polymer ayiyona i-hygroscopic futhi inokumelana kahle nomhwamuko wamanzi, futhi ingasetshenziselwa izinjongo zokupakisha.I-HDPE inezinto ezinhle zikagesi, ikakhulukazi amandla aphezulu e-dielectric of the insulation, okwenza ifaneleke kakhulu izintambo nezintambo.Amabanga aphakathi nendawo kuya aphezulu esisindo samangqamuzana anokumelana nomthelela omuhle kakhulu, ngisho nasezingeni lokushisa elivamile ngisho nasezingeni eliphansi lokushisa elingu-40F.Izici eziyingqayizivele zamamaki ahlukahlukene e-HDPE ziyinhlanganisela efanele yezinto ezine eziyisisekelo: ukuminyana, isisindo samangqamuzana, ukusatshalaliswa kwesisindo samangqamuzana kanye nezithasiselo.Ama-catalyst ahlukene asetshenziselwa ukukhiqiza ama-polymers enziwe ngokwezifiso anezici ezikhethekile.Inhlanganisela yalokhu okuguquguqukayo ikhiqiza amamaki e-HDPE ngezinhloso ezahlukene;ukuzuza ibhalansi engcono kakhulu ekusebenzeni.
ukuminyana
Lokhu ukuguquguquka okuyinhloko okunquma izici ze-HDPE, nakuba okuguquguqukayo okune okukhulunywe ngakho kuyathintana.I-Ethylene iwumthombo oyinhloko we-polyethylene.Amanye ama-comonomer ambalwa, afana ne-1-butene, i-1-hexene noma i-1-octene, nawo avame ukusetshenziselwa ukuthuthukisa ukusebenza kwe-polymer.Nge-HDPE, okuqukethwe kwama-monomer ambalwa angenhla ngokuvamile akudluli u-1% -2%.Ukwengezwa kwe-comonomer kunciphisa kancane i-crystallinity ye-polymer.Lolu shintsho luvame ukukalwa ngokuminyana, okunobudlelwano bomugqa nekristalu.Ukuhlukaniswa okuvamile kwe-United States kuhambisana ne-ASTM D1248, futhi ukuminyana kwe-HDPE ngu-0.940g/.Ngaphezulu kuka-C;Ibanga lokuminyana le-MDPE lingu-0.926–0.940g/CC.Ezinye izigaba kwesinye isikhathi zihlukanisa i-MDPE njenge-HDPE noma i-LLDPE.Ama-homopolymer anokuminyana okuphezulu kakhulu, ukuqina okuphezulu kakhulu, ukungena kahle kanye nendawo ephezulu yokuncibilika, kodwa ngokuvamile awakwazi ukumelana nokuqhekeka kokucindezeleka kwemvelo (ESCR).I-ESCR ikhono le-PE lokumelana nokuqhekeka okubangelwa ukucindezeleka komshini noma kwamakhemikhali.Ukuminyana okuphezulu ngokuvamile kuthuthukisa amandla emishini, njengamandla okuqina, ukuqina, nobulukhuni;izici ezishisayo ezifana nezinga lokushisa elithambile kanye nezinga lokushisa lokuphazamisa ukushisa;kanye nokungangenisi, njengokungena komoya noma ukungena komhwamuko wamanzi.Ukuminyana okuphansi kuthuthukisa amandla ayo omthelela kanye ne-E-SCR.Ukuminyana kwe-polymer kuthinteka kakhulu ngokungezwa kwama-comonomers, kodwa ngokwezinga elincane ngesisindo samangqamuzana.Amaphesenti aphezulu esisindo samangqamuzana anciphisa ukuminyana kancane.Isibonelo, ama-homopolymers anobunzima obuhlukahlukene ezinhlobonhlobo zezisindo zamangqamuzana.
Ukukhiqiza kanye ne-catalyst
Indlela evamile yokukhiqiza ye-PE iwukucutshungulwa kwesigaba se-slurry noma igesi, futhi ezimbalwa zikhiqizwa ukucubungula kwesigaba sesixazululo.Zonke lezi zinqubo ziwukusabela okushisayo okubandakanya i-ethylene monomer, i-a-olefin monoma, isistimu ye-catalyst (ingaba ngaphezu kwenhlanganisela eyodwa) kanye nezinhlobo ezahlukene zezihlambululi ze-hydrocarbon.I-Hydrogen namanye ama-catalysts asetshenziselwa ukulawula isisindo samangqamuzana.I-slurry reactor ngokuvamile iyithangi elinyakaziswayo noma i-loop reactor evame ukusetshenziswa kakhulu lapho i-slurry ingasakazwa futhi inyakaze.Lapho i-ethylene ne-comonomer (njengoba kudingeka) ihlangana ne-catalyst, izinhlayiya ze-polyethylene ziyakhiwa.Ngemuva kokukhipha i-diluent, ama-polyethylene granules noma ama-powder granules ayomiswa futhi izithasiselo zengezwe ngokuvumelana nesilinganiso sokukhiqiza ama-pellets.Ulayini wokukhiqiza wesimanje onama-reactor amakhulu anama-twin screw extruder angakhiqiza ngaphezu kwamaphawundi angu-40,000 we-PE ngehora.Ukuthuthukiswa kwama-catalyst amasha kunomthelela ekwenzeni ngcono ukusebenza kwamabanga amasha e-HDPE.Izinhlobo ezimbili ezisetshenziswa kakhulu zama-catalyst ama-Philips' chromium oxide-based catalysts kanye ne-titanium compound-alkyl aluminium catalysts.I-HDPE ekhiqizwe yi-Phillips catalyst ine-medium-width molecular weight distribution;i-titanium-alkyl aluminium catalyst inokusabalalisa kwesisindo samangqamuzana amancane.I-catalyst esetshenziswa ekukhiqizeni ama-polymers e-MDW emincane ku-reactor ekabili ingasetshenziswa futhi ukukhiqiza amamaki abanzi e-MDW.Isibonelo, ama-reactor amabili ochungechungeni akhiqiza imikhiqizo yesisindo se-molecular ehluke kakhulu angakhiqiza ama-polymers esisindo se-bimodal molecular anobubanzi obugcwele bokusabalalisa isisindo se-molecular.Ukufakwa kwepayipi le-PE
Isisindo samangqamuzana
Isisindo samangqamuzana esiphezulu siphumela ekubonakaleni okuphezulu kwe-polymer, kodwa i-viscosity nayo ihlobene nezinga lokushisa ne-shear elisetshenziswe ekuhlolweni.I-Rheology noma isilinganiso sesisindo samangqamuzana sisetshenziselwa ukukhombisa isisindo samangqamuzana sento.Amabanga e-HDPE ngokuvamile anesisindo samangqamuzana esisukela ku-40 000 kuya ku-300 000, futhi isisindo esimaphakathi se-molecular weight cishe sihambisana nohlu lwenkomba encibilikayo, okungukuthi, ukusuka ku-100 kuya ku-0. 029/10min.Ngokuvamile, i-MW ephakeme (i-low melt index MI) ithuthukisa amandla okuncibilika, ukuqina okungcono kanye ne-ESCR, kodwa i-MW ephakeme yenza ukucutshungulwa.
Inqubo inzima kakhulu noma idinga ukucindezela okuphezulu noma izinga lokushisa.
Ukusatshalaliswa kwesisindo samangqamuzana (MWD): I-WD ye-PE iyahlukahluka ukusuka kokuncane kuye kobubanzi kuye nge-catalyst esetshenzisiwe kanye nenqubo yokucubungula.
Inkomba yokulinganisa ye-MWD evame ukusetshenziswa kakhulu yinkomba yokungalingani (HI), elingana nesisindo esimaphakathi semolekyuli (MW) ehlukaniswa ngenani elimaphakathi lesisindo semolekyuli (Mn).Lolu hlu lwenkomba lwawo wonke amabanga e-HDPE luyi-4-30.I-MWD emincane inikeza i-warpage ephansi kanye nomthelela ophezulu phakathi nenqubo yokubumba.I-MWD ephakathi nendawo ukuya ebanzi inikeza ukucutshungulwa kwezinqubo eziningi ze-extrusion.I-WD ebanzi ingathuthukisa amandla okuncibilika kanye nokumelana nokukhasa.
okungeziwe
Ukwengezwa kwama-antioxidants kungavimbela ukuwohloka kwe-polymer ngesikhathi sokucubungula futhi kuvimbele i-oxidation yomkhiqizo oqediwe ngesikhathi sokusetshenziswa.Izithasiselo ze-Antistatic zisetshenziswa emabangeni amaningi okupakisha ukunciphisa ukunamathela kwamabhodlela noma ukupakishwa othulini nasekungcoleni.Izinhlelo zokusebenza eziqondile zidinga ukwakheka okungeziwe okukhethekile, okufana nama-copper inhibitors ahlobene nezinhlelo zezintambo nezintambo.Ukumelana nesimo sezulu esihle kakhulu kanye ne-anti-ultraviolet (noma ukukhanya kwelanga) kungafinyelelwa ngokungeza izithasiselo ze-anti-UV.Ngaphandle kokwengezwa kwe-UV-resistant noma i-carbon black PE, kunconywa ukuthi ungaqhubeki ukuyisebenzisa ngaphandle.I-carbon black pigments yezinga eliphezulu ihlinzeka ngokumelana okuhle kakhulu kwe-UV futhi ivame ukusetshenziswa ezinhlelweni zangaphandle, njengezintambo, izintambo, izendlalelo zamathangi noma amapayipi.
izindlela zokucubungula
I-PE ingenziwa ngezindlela eziningi ezahlukene zokucubungula.Ukusebenzisa i-ethylene njengento eyinhloko eluhlaza, i-propylene, i-1-butene, ne-hexene njenge-copolymer, ngaphansi kwesenzo se-catalyst, inqubo ye-polymerization ye-slurry noma igesi yesigaba se-polymerization iyamukelwa, futhi i-polymer etholiwe iyakhazimula, ihlukaniswe, yomiswe, ifakwe granulated. , njll. Inqubo yokuthola imikhiqizo eqediwe enezinhlayiya ezifanayo.Kubandakanya okufana ne-extrusion yeshidi, ifilimu extrusion, ipayipi noma iphrofayili extrusion, ukubumba igalelo, ukubumba umjovo kanye nokubumba ngokujikeleza.
▲I-Extrusion: Ibanga elisetshenziselwa ukukhiqizwa kwe-extrusion ngokuvamile linenkomba encibilikayo engaphansi kuka-1 kanye ne-MWD ephakathi kuya kobubanzi.Ngesikhathi sokucubungula, i-MI ephansi ingathola amandla afanele ancibilike.Amabanga abanzi e-MWD afaneleka kakhulu ukukhishwa ngenxa yokuthi anesivinini sokukhiqiza esiphezulu, izingcindezi eziphansi zokufa kanye nokuncibilika kokuncibilika kokuphuka.
I-PE inezinhlelo zokusebenza eziningi ze-extrusion, njengezintambo, izintambo, amapayipi, amapayipi namaphrofayili.Ukufakwa kwamapayipi kusuka kumapayipi aphuzi esigaba esincane segesi yemvelo kuya kumapayipi amnyama anezindonga eziwugqinsi anobubanzi obungu-48in wamapayipi ezimboni nasemadolobheni.Ukusetshenziswa kwamapayipi anezindonga ezingenalutho ezinobubanzi obukhulu esikhundleni samapayipi okudonsa amanzi emvula enziwe ngokhonkolo namanye amapayipi endle kukhula ngokushesha.
Ishidi kanye ne-thermoforming: Uhlaka lwe-thermoforming lwamafriji amaningi epikiniki amakhulu lwenziwe nge-PE, eqinile, elula futhi ehlala isikhathi eside.Eminye imikhiqizo yeshidi kanye ne-thermoformed ihlanganisa abaqaphi bodaka, omalayisha bamathangi, onogada bamapani, amabhokisi okuthutha kanye namathangi.Inani elikhulu lezicelo zamashidi ezikhula ngokushesha ziyizimboza zezihlahla noma izigodi ezingaphansi kwechibi, ezisekelwe ekuqina, ukumelana namakhemikhali kanye nokungangenisi kwe-MDPE.
▲ Ukubumba okuvuthelayo: Ngaphezu kwe-1/3 ye-HDPE edayiswa e-United States isetshenziselwa ukubumba i- blow.Lokhu kusuka emabhodleleni aqukethe i-bleach, uwoyela wemoto, okokugeza, ubisi namanzi acwengekile kuya eziqandisini ezinkulu, amathangi kaphethiloli emoto namathini.Izici zamabanga okubumba igalelo, njengamandla ancibilikayo, i-ES-CR nokuqina, ziyafana nalezo ezisetshenziselwa izinhlelo zokusebenza zeshidi ne-thermoforming, ngakho amamaki afanayo angasetshenziswa.
Ukubumba umjovo wokuvuthela kuvame ukusetshenziselwa ukwenza iziqukathi ezincane (ngaphansi kuka-16oz) zokupakisha imithi, ama-shampoos nezimonyo.Enye yezinzuzo zale nqubo ukuthi amabhodlela okukhiqiza anqunywa ngokuzenzakalelayo, ngaphandle kwesidingo sezinyathelo zokuqeda ngemva kokuqeda njengokubunjwa kokushaywa okujwayelekile.Nakuba amanye amabanga amancane e-MWD esetshenziselwa ukuthuthukisa ukuqedwa kwendawo, amamaki e-MWD aphakathi nendawo ukuya kobubanzi asetshenziswa ngokujwayelekile.
▲Ukubumba komjovo: I-HDPE inezinhlelo zokusebenza ezingenakubalwa, kusukela ezinkomishini zesiphuzo ezinezindonga ezincane ezisebenziseka kabusha ukuya kumakani angu-5-gsl, adla u-1/5 we-HDPE yasekhaya.Amabanga okubumba umjovo ngokuvamile anenkomba yokuncibilika engu-5-10.Kukhona amamaki anokuqina kanye ne-fluidity ephansi kanye namamaki aphezulu oketshezi anokucutshungulwa.Ukusetshenziswa kubandakanya izidingo zansuku zonke kanye nokudla okufakwe izindonga ezincane;ukudla okuqinile futhi okuqinile namathini opende;ukumelana okuphezulu nezicelo zokuqhekeka kokucindezeleka kwemvelo, njengamathangi kaphethiloli wenjini encane namathini kadoti angama-90-gal.
▲ Ukubumba okujikelezayo: Izinto ezisebenzisa le ndlela yokucubungula ngokuvamile zichotshozwa zibe izinto eziyimpushana, ezincibilika bese zigeleza emjikelezweni wokushisa.I-Rotomolding isebenzisa izinhlobo ezimbili ze-PE: inhloso evamile kanye ne-cross-linkable.I-MDPE/HDPE yenhloso evamile ivamise ukuba nokuminyana okusuka ku-0.935 kuye ku-0.945g/CC, ene-MWD encane, ukuze umkhiqizo ube nomthelela omkhulu kanye ne-warpage encane, futhi inkomba yayo yokuncibilika ngokuvamile iba kububanzi obungu-3-8.Amabanga aphezulu e-MI ngokuvamile awafaneleki ngenxa yokuthi awanawo umthelela kanye nokumelana nokuqhekeka kwemvelo okulindelekile emikhiqizweni eyenziwe nge-rotomold.
Izinhlelo zokusebenza zokubumba ezijikelezayo ezisebenza kahle kakhulu zisebenzisa izici ezihlukile zamamaki awo axhumene ngamakhemikhali.Lawa mabanga ane-fluidity enhle engxenyeni yokuqala yomjikelezo wokubumba, bese exhumanisa ukuze akhe ukumelana kwawo okuhle kakhulu nokuqina kokucindezeleka kwemvelo.Ukumelana nokugqoka kanye nokumelana nesimo sezulu.I-Cross-linkable PE ifaneleka kuphela ezitsheni ezinkulu, kusukela kumathangi angama-500-gal okuthutha amakhemikhali ahlukahlukene ukuya emathangini ezolimo angu-20,000-gal.
▲Ifilimu: Ukucutshungulwa kwefilimu ye-PE ngokuvamile kusebenzisa ukucutshungulwa kwefilimu okushaywa umoya okujwayelekile noma ukucutshungulwa kwe-flat extrusion.I-PE eningi isetshenziselwa ifilimu, i-PE (LDPE) evamile ephansi noma i-linear low density PE (LLDPE) iyatholakala.Amamaki efilimu ye-HDPE ngokuvamile asetshenziswa lapho kudingeka khona ukunwebeka okuphakeme kanye nokungangenisi okuhle kakhulu.Isibonelo, ifilimu ye-HDPE ivame ukusetshenziselwa izikhwama zezimpahla, izikhwama zegrosa kanye nokupakisha ukudla.
Ukusebenza komkhiqizo
I-polyethylene ene-high-density ayinabo ubuthi, ayinambitheki, futhi ayinaphunga izinhlayiya ezimhlophe ezinephuzu lokuncibilika cishe elingu-130°C kanye nokuminyana okuhlobene kuka-0.941 kuya ku-0.960.Inokumelana nokushisa okuhle nokumelana nokubanda, ukuzinza okuhle kwamakhemikhali, ukuqina okuphezulu nokuqina, namandla amahle emishini.Izakhiwo ze-Dielectric kanye nokumelana nokuqhekeka kwemvelo nakho kuhle.
Ukupakisha nokugcina
Gcina kude nokushisa nokushisa ngesikhathi sokugcina.Indawo yokugcina impahla kufanele igcinwe yomile futhi icocekile.Kuvinjelwe ngokuphelele ukuxuba kunoma yikuphi ukungcola, ukukhanya kwelanga nemvula.Izinto zokuhamba kufanele zigcinwe emakalishini ahlanzekile, omile, amboziwe, futhi akufanele kube nezinto ezicijile njengezinzipho zensimbi.Izinto zokuhamba ezixutshwe nama-hydrocarbon anephunga elimnandi, ama-halogenated hydrocarbons nezinye izinyibilikisi eziphilayo akuvunyelwe ngokuphelele.
sebenzisa kabusha futhi usebenzise kabusha
I-HDPE iyingxenye ekhula ngokushesha kakhulu yemakethe yokugaywa kabusha kwepulasitiki.Lokhu kubangelwa ikakhulukazi ukucutshungulwa kabusha kwayo kalula, izici zokuwohloka okuncane kanye nenani elikhulu lezicelo zezinjongo zokupakisha.Ukugaywa kabusha okuyinhloko kuwukucubungula kabusha u-25% wezinto ezigaywe kabusha, ezifana nezinto ezigaywa kabusha zangemuva kwabathengi (PCR), nge-HDPE emsulwa ukwenza amabhodlela angathintani nokudla.
Amapayipi e-PE okulethwa kwamanzi ayimikhiqizo yokushintshwa kwamapayipi ensimbi endabuko kanye namapayipi amanzi okuphuza e-PVC.
