Umbhobho (wonkcenkceshelo)

Inkcazelo emfutshane:

Ixabiso: $0.20- $2.10

MOQ: 500m

Ubungakanani bokuthunyelwa kwemveliso: 100000m/ngenyanga


Iinkcukacha zeMveliso

Iithegi zeMveliso

Iinkcukacha eziKhawulezayo

Isazisi seMveliso:EI042502KK
Ubukhulu begama: 12mm-110mm
Iqondo loxinzelelo: 0.25Mpa, 0.4Mpa, 0.6Mpa
Ifaneleka:Imibhobho yokunkcenkceshela yoxinzelelo oluphakathi nophezulu esetyenziselwa iindawo ezingaphantsi komhlaba
imibhobho engundoqo efana nokunkcenkceshela imibhobho, ukunkcenkceshela micro-sprinkler;imibhobho yokunkcenkceshela yoxinzelelo oluphantsi inako
Faka isicelo kwimibhobho yesebe lokunkcenkceshela imibhobho, ukunkcenkceshela ngezitshizi, iinkqubo zokunkcenkceshela.
Ubushushu obusebenzayo: 0-45 ℃
Imowudi yoqhagamshelo: Iqhagamshelwe ikakhulu ngoqhagamshelo olukhawulezayo.

I-Dayu Water Saving Group Co., Ltd. yasekwa ngo-1999. Lishishini lesizwe lobugcisa obuphezulu obusekelwe kwi-Academy yaseTshayina yeSayensi zaManzi, iZiko lokuPhakanyiswa kweNzululwazi kunye neTekhnoloji yoMphathiswa wezaManzi, i-Academy yaseTshayina yeSayensi, iAkhademi yaseTshayina yobuNjineli kunye namanye amaziko ophando lwenzululwazi.Idweliswe kwiMarike yoShishino lokuKhula.Ikhowudi yesitokhwe: 300021. Inkampani isekwe iminyaka eyi-20 kwaye ihlala igxininise kwaye izinikele kwisisombululo kunye nenkonzo yezolimo, imimandla yasemaphandleni kunye nemithombo yamanzi.Iphuhliseke yaba yingqokelela yokonga amanzi ezolimo, unikezelo lwamanzi ezidolophini nasezilalini, ukucocwa kwelindle, imicimbi yamanzi ekrelekrele, uqhagamshelo lwenkqubo yamanzi, ulawulo lwendalo yamanzi kunye nokubuyiselwa kunye neminye imimandla.Umboneleli wesisombululo senkqubo yobuchwephesha kulo lonke ikhonkco loshishino lokudibanisa ukucwangciswa kweprojekthi, uyilo, utyalo-mali, ulwakhiwo, ukusebenza, ulawulo kunye nokugcinwa kweenkonzo.Kushishino lokuqala kwinkalo yokonga amanzi ezolimo e-China kunye nenkokeli yehlabathi.

 

I-polyethylene yoxinaniso oluphezulu, igama lesiNgesi ngu "High Density Polyethylene", okanye "HDPE" ngokufutshane.I-HDPE yintlaka ekhazimle kakhulu, engekho polar ye-thermoplastic resin.Ukubonakala kwe-HDPE yasekuqaleni imhlophe emhlophe, kwaye icandelo elincinci liguquguqukayo ukuya kwinqanaba elithile.I-PE inokumelana okugqwesileyo kuninzi lweekhemikhali zasekhaya nezamashishini.Iindidi ezithile zeekhemikhali zinokubangela ukubola kweekhemikhali, ezifana ne-corrosive oxidants (concentrated nitric acid), iihydrocarbons ezinuka kamnandi (xylene) kunye neehalogenated hydrocarbons (carbon tetrachloride).I-polymer ayinayo i-hygroscopic kwaye inokumelana kakuhle nomphunga wamanzi, kwaye ingasetyenziselwa iinjongo zokupakisha.I-HDPE ineempawu ezilungileyo zombane, ngokukodwa amandla aphezulu e-dielectric of the insulation, okwenza ukuba ifaneleke kakhulu iingcingo kunye neentambo.Amabanga aphakathi ukuya kubunzima bemolekyuli aphezulu anempembelelo entle yokuchasa, nokuba kubushushu begumbi nakwiqondo lobushushu eliphantsi le--40F.

I-HDPE yi-thermoplastic polyolefin eveliswa yi-copolymerization ye-ethylene.Nangona i-HDPE yasungulwa ngo-1956, le plastiki ayikafikeleli kwinqanaba lokuvuthwa.Esi sixhobo senjongo ngokubanzi sihlala siphuhlisa ukusetyenziswa kwaso okutsha kunye neemarike.

Iimpawu eziphambili

I-HDPE i-resin ye-thermoplastic engekho-polar ene-crystallinity ephezulu.Ukubonakala kwe-HDPE yasekuqaleni imhlophe emhlophe, kwaye icandelo elincinci liguquguqukayo ukuya kwinqanaba elithile.I-PE inokumelana okugqwesileyo kuninzi lweekhemikhali zasekhaya nezamashishini.Iindidi ezithile zeekhemikhali zinokubangela ukubola kweekhemikhali, ezifana ne-corrosive oxidants (concentrated nitric acid), iihydrocarbons ezinuka kamnandi (xylene) kunye neehalogenated hydrocarbons (carbon tetrachloride).I-polymer ayinayo i-hygroscopic kwaye inokumelana kakuhle nomphunga wamanzi, kwaye ingasetyenziselwa iinjongo zokupakisha.I-HDPE ineempawu ezilungileyo zombane, ngokukodwa amandla aphezulu e-dielectric of the insulation, okwenza ukuba ifaneleke kakhulu iingcingo kunye neentambo.Amabanga aphakathi ukuya kubunzima bemolekyuli aphezulu anempembelelo entle yokuchasa, nokuba kubushushu begumbi nakwiqondo lobushushu eliphantsi le--40F.Iimpawu ezikhethekileyo zamabakala ahlukeneyo e-HDPE yindibaniselwano efanelekileyo yezinto ezine ezisisiseko: ubuninzi, ubunzima bemolekyuli, ukusabalalisa ubunzima beemolekyuli kunye nezongezo.Ii-catalysts ezahlukeneyo zisetyenziselwa ukuvelisa iipolymers ezenziwe ngokwezifiso ezineempawu ezizodwa.Indibaniselwano yezi zintlukwano ivelisa amabakala e-HDPE ngeenjongo ezahlukeneyo;ukufezekisa eyona ndlela ilungileyo yokusebenza.

ukuxinana

Olu lutshintsho oluphambili olumisela iimpawu ze-HDPE, nangona iinguqu ezine ezikhankanyiweyo zichaphazela omnye nomnye.I-ethylene yeyona nto iphambili ye-polyethylene.Ezinye iicomonomers ezimbalwa, ezifana ne-1-butene, i-1-hexene okanye i-1-octene, nazo zihlala zisetyenziselwa ukuphucula ukusebenza kwe-polymer.Kwi-HDPE, umxholo weemonomers ezimbalwa apha ngasentla awugqithisi kwi-1% -2%.Ukongezwa kwe-comonomer kunciphisa kancinci i-crystallinity ye-polymer.Olu tshintsho lulinganiswa ngokubanzi ngoxinaniso, olunobudlelwane bomgca kunye ne-crystallinity.Ukuhlelwa ngokubanzi kwe-United States kuhambelana ne-ASTM D1248, kwaye ubuninzi be-HDPE yi-0.940g /.Ngaphezulu C;Uluhlu loxinaniso lwe-MDPE yi-0.926~0.940g/CC.Olunye ukuhlelwa ngamanye amaxesha luhlela i-MDPE njenge-HDPE okanye i-LLDPE.I-homopolymers inoxinaniso oluphezulu, ukuqina okuphezulu, ukungeneka okulungileyo kunye neyona ndawo iphakamileyo yokunyibilika, kodwa ngokubanzi ayinakuxhathisa okungahambi kakuhle kuxinzelelo lwendalo (ESCR).I-ESCR yikhono le-PE lokumelana nokuqhekeka okubangelwa ngumatshini okanye uxinzelelo lweekhemikhali.Ukuxinana okuphezulu ngokubanzi kuphucula amandla oomatshini, njengamandla okuqina, ukuqina, kunye nobunzima;iipropathi ze-thermal ezifana neqondo lokushisa elithambileyo kunye nobushushu bokuphazamisa ubushushu;kunye nokungangeni, okufana nokungena komoya okanye umphunga wamanzi.Uxinzelelo olusezantsi luphucula amandla ayo empembelelo kunye ne-E-SCR.Uxinaniso lwepolymer luchaphazeleka ikakhulu kukongezwa kwe-comonomers, kodwa kuncinci ngobunzima bemolekyuli.Ipesenteji yobunzima bemolekyuli ephezulu inciphisa ukuxinana kancinci.Ngokomzekelo, ii-homopolymers zineendidi ezahlukeneyo kuluhlu olubanzi lobunzima beemolekyuli.

Imveliso kunye ne-catalyst

Eyona ndlela ixhaphakileyo yokuvelisa i-PE kukusetyenzwa kwe-slurry okanye i-gas phase, kwaye ezimbalwa ziveliswa ngokulungiswa kwesigaba sesisombululo.Zonke ezi nkqubo zii-exothermic reactions ezibandakanya i-ethylene monomer, i-a-olefin monoma, inkqubo ye-catalyst (inokuba ngaphezu kwekhompawundi enye) kunye neentlobo ezahlukeneyo ze-hydrocarbon diluents.I-Hydrogen kunye nezinye ii-catalysts zisetyenziselwa ukulawula ubunzima be-molecular.Ireactor yodaka oluludaka ludla ngokuba yitanki eshukumayo okanye ireactor esetyenziswa ngokuqhelekileyo kwilophu enkulu apho udaka lunokujikeleziswa luzamiseke.Xa i-ethylene kunye ne-comonomer (njengoko kuyimfuneko) zidibana ne-catalyst, iinqununu ze-polyethylene zenziwe.Emva kokususa i-diluent, i-polyethylene granules okanye i-powder granules iyomiswa kwaye izongezo zongezwa ngokwe-dosage ukuvelisa iipellets.Umgca wemveliso wanamhlanje onee-reactors ezinkulu kunye ne-twin screw extruders unokuvelisa ngaphezu kwe-40,000 yeepounds ze-PE ngeyure.Ukuphuhliswa kwee-catalysts ezintsha kunegalelo ekuphuculeni ukusebenza kwamabanga amatsha e-HDPE.Iintlobo ezimbini ezisetyenziswa ngokuqhelekileyo ze-catalysts yi-Philips' chromium oxide-based catalysts kunye ne-titanium compound-alkyl aluminium catalysts.I-HDPE eveliswe yi-Phillips catalyst ine-medium-width-width molecular weight distribution;i-titanium-alkyl aluminium catalyst inokusabalalisa ubunzima bemolekyuli.I-catalyst esetyenziselwa ukuveliswa kweepolymers ze-MDW emxinwa kwi-reactor ephindwe kabini ingasetyenziselwa ukuvelisa amabakala abanzi e-MDW.Umzekelo, ii-reactors ezimbini kuthotho ezivelisa iimveliso ezinobunzima bemolekyuli ezahlukeneyo zinokuvelisa iipolymers ze-bimodal molecular weight ezinoluhlu olupheleleyo lolwabiwo lobunzima bemolekyuli.Ukufakwa kombhobho we-PE

Ubunzima bemolekyuli

Ubunzima bemolekyuli obuphezulu bukhokelela kwi-viscosity ephezulu yepolymer, kodwa i-viscosity inxulumene nobushushu kunye nesantya sokucheba esisetyenziswe kuvavanyo.I-Rheology okanye i-molecular weight measurement isetyenziselwa ukubonakalisa ubunzima be-molecular of the material.Amabakala e-HDPE ngokubanzi anobunzima bobunzima be-molecular 40 000 ukuya ku-300 000, kunye ne-avareji yobunzima be-molecular weight ngokumalunga ne-melt index range, oko kukuthi, ukusuka kwi-100 ukuya ku-0. 029/10min.Ngokubanzi, i-MW ephezulu (i-Lower melt index MI) yongeza amandla okunyibilika, ukuqina okungcono kunye ne-ESCR, kodwa i-MW ephezulu yenza ukusetyenzwa.

Inkqubo inzima ngakumbi okanye ifuna uxinzelelo oluphezulu okanye ubushushu.

Ukusabalalisa ubunzima be-Molecular (MWD): I-WD ye-PE iyahluka ukusuka kumxinwa ukuya kububanzi ngokuxhomekeke kwi-catalyst esetyenzisiweyo kunye nenkqubo yokucubungula.

Eyona isetyenziswa ngokuqhelekileyo isalathisi somlinganiselo we-MWD yi-inevenness index (HI), elingana ne-avareji yobunzima bemolekyuli (MW) yahlulwe ngenani eliphakathi kobunzima bemolekyuli (Mn).Olu luhlu lwesalathisi kuwo onke amabakala e-HDPE yi-4-30.I-MWD emxinwa ibonelela nge-warpage ephantsi kunye nefuthe eliphezulu ngexesha lenkqubo yokubumba.I-MWD ephakathi ukuya kububanzi ibonelela ngokuqhubekeka kwezona nkqubo zininzi ze-extrusion.I-WD ebanzi ingaphucula amandla okunyibilika kunye nokuxhathisa kokurhubuluza.

ukongeza

Ukongezwa kwe-antioxidants kunokuthintela ukuthotywa kwepolymer ngexesha lokucubungula kunye nokuthintela i-oxidation yemveliso egqityiweyo ngexesha lokusetyenziswa.Izongezo ze-Antistatic zisetyenziselwa amabakala amaninzi okupakisha ukunciphisa ukunamathela kwiibhotile okanye ukupakisha uthuli kunye nokungcola.Izicelo ezikhethekileyo zifuna iifomyula ezikhethekileyo zokongeza, ezifana ne-copper inhibitors ezinxulumene nocingo kunye nezicelo zekhebula.Ukumelana nemozulu egqwesileyo kunye ne-anti-ultraviolet (okanye ukukhanya kwelanga) kunokufezekiswa ngokungeza izongezo ze-anti-UV.Ngaphandle kokongezwa kwe-UV-resistant okanye i-carbon black PE, kuyacetyiswa ukuba ungaqhubeki ukuyisebenzisa ngaphandle.Umgangatho ophezulu we-carbon pigments emnyama ibonelela ngokugqwesileyo kwi-UV kwaye ihlala isetyenziswa kwizicelo zangaphandle, ezinje ngeengcingo, iintambo, iileya zetanki okanye imibhobho.

iindlela zokulungisa

I-PE inokuveliswa kuluhlu olubanzi lweendlela ezahlukeneyo zokucwangcisa.Ukusebenzisa i-ethylene njengeyona nto iphambili, i-propylene, i-1-butene, kunye ne-hexene njenge-copolymer, phantsi kwesenzo se-catalyst, i-polymerization ye-slurry okanye inkqubo ye-gas ye-polymerization iyamkelwa, kwaye i-polymer efunyenweyo iyavutha, yahlulwe, yomiswa, igranulated. , njl Inkqubo yokufumana iimveliso ezigqityiweyo kunye neengqungquthela ezifanayo.Kubandakanywa ezifana ne-sheet extrusion, ifilimu extrusion, umbhobho okanye iprofayili extrusion, ukubumba ukuvuthela, ukubunjwa kwenaliti kunye nokubumba okujikelezayo.

▲ I-Extrusion: Ibakala elisetyenziselwa imveliso ye-extrusion ngokubanzi inesalathisi esinyibilikayo esingaphantsi kwe-1 kunye ne-MWD ephakathi ukuya kububanzi.Ngexesha lokucubungula, i-MI ephantsi inokufumana amandla afanelekileyo anyibilikayo.Amabanga abanzi e-MWD afaneleke ngakumbi kwi-extrusion ngenxa yokuba anezantya eziphezulu zemveliso, uxinzelelo olusezantsi lokufa kunye nokuncitshiswa kokuthambekela kokuqhekeka kokunyibilika.

I-PE inezicelo ezininzi ze-extrusion, ezifana neengcingo, iintambo, i-hoses, imibhobho kunye neeprofayili.Ukusetyenziswa kwemibhobho ukusuka kwimibhobho etyheli yecandelo elincinci yerhasi yendalo ukuya kwimibhobho emnyama eneendonga ezingqindilili enobubanzi obungama-48in kwimibhobho yemizi-mveliso neyedolophu.Ukusetyenziswa kwemibhobho yodonga olunomngxuma enobubanzi obukhulu njengendawo yokuthatha indawo yemibhobho yokuhambisa amanzi emvula eyenziwe ngekhonkrithi neminye imibhobho yogutyulo ikhula ngokukhawuleza.

Iphepha kunye ne-thermoforming: I-thermoforming lining yeefriji ezininzi zepikiniki ezinkulu zenziwe nge-PE, eqinile, ilula kwaye ihlala ixesha elide.Amanye amaphepha kunye neemveliso ze-thermoformed ziquka udaka, iilitha zetanki, iipani zokugada, iibhokisi zokuthumela kunye neetanki.Inani elikhulu lezicelo ze-sheet ezikhula ngokukhawuleza ziyi-mulch okanye iidolophana eziphantsi kwe-pool, ezisekelwe kukuqina, ukuxhathisa imichiza kunye nokungabi namanzi kwe-MDPE.

▲ Ukubumba ukuvuthela: Ngaphezu kwe-1/3 ye-HDPE ethengiswa e-United States isetyenziselwa ukubumba ukuvuthela.Ezi bhotile zisusela kwiibhotile ezineblitshi, i-oyile yemoto, isicoci, ubisi kunye namanzi adiyiweyo ukuya kwizikhenkcisi ezinkulu, iitanki zamafutha emoto kunye neetoti.Iimpawu zokubumba amabakala, njengamandla okunyibilika, i-ES-CR kunye nokuqina, zifana nezo zisetyenziselwa izicelo zephepha kunye ne-thermoforming, ngoko ke amabakala afanayo angasetyenziswa.

I-injection-blolow molding idla ngokusetyenziselwa ukwenza izikhongozeli ezincinci (ngaphantsi kwe-16oz) zokupakisha amayeza, iishampu kunye nezinto zokuthambisa.Enye yeenzuzo zale nkqubo kukuba iibhotile zokuvelisa zihlanjululwa ngokuzenzekelayo, ngaphandle kwesidingo samanyathelo okugqiba emva kokugqiba njengokubumba ngokubanzi.Nangona amanye amabakala emxinwa e-MWD esetyenziselwa ukuphucula umgangatho, amabanga aphakathi ukuya kububanzi be-MWD asetyenziswa ngokubanzi.

▲ I-injection molding: I-HDPE inezicelo ezingenakubalwa, ukusuka kwiikomityi zesiselo ezinqabileyo ezinodonga oluphindwe kabini ukuya kwii-5-gsl cants, ezidla i-1/5 ye-HDPE yasekhaya.Amabanga okubumba isitofu ngokubanzi anesalathiso sokunyibilika kwe-5-10.Kukho amabanga anobulukhuni kunye nokungaguquguquki okusezantsi kunye namabakala aphezulu okuguquguquka nokuqhubekeka.Usetyenziso lubandakanya iimfuno zemihla ngemihla kunye nokutya okupakishwe ngodonga olucekethekileyo;ukutya okuqinileyo kunye neetoti zepeyinti;ukumelana noxinzelelo oluphezulu kwizicelo zokuqhekeka koxinzelelo lwendalo, njengamatanki e-injini amancinci kunye neetoti zenkunkuma ezingama-90.

▲ Ukubumba okujikelezayo: Izinto ezisebenzisa le ndlela yokucubungula zityunyuzwa ngokubanzi zibe ngumgubo, ezinyibilikayo kwaye zihambe kumjikelo we-thermal.I-Rotomolding isebenzisa iindidi ezimbini ze-PE: injongo-jikelele kunye ne-cross-linkable.Injongo ngokubanzi ye-MDPE / HDPE ngokuqhelekileyo inobuninzi obuvela kwi-0.935 ukuya kwi-0.945g / CC, kunye ne-MWD encinci, ukwenzela ukuba imveliso ibe nefuthe eliphezulu kunye ne-warpage encinci, kwaye isalathisi sayo sokunyibilika ngokuqhelekileyo kuluhlu lwe-3-8.Amabanga aphezulu e-MI awafanelekanga ngenxa yokuba awanayo impembelelo kunye noxinzelelo lokusingqongileyo ukumelana nokuqhekeka okulindelekileyo kwiimveliso ze-rotomolded.

Ukusetyenziswa kokubumba okujikelezayo okusebenzayo okuphezulu kusebenzisa iipropathi ezikhethekileyo zamabakala ayo anqamlezileyo ngokwekhemikhali.Ezi bakala zine-fluidity elungileyo kwinxalenye yokuqala yomjikelo wokubumba, kwaye emva koko i-crosslink ukwenza imo ebalaseleyo yoxinzelelo lokusingqongileyo ukumelana nokuqhekeka kunye nokuqina.Ukumelana nokunxiba kunye nokumelana nemozulu.I-Cross-linkable PE ifanelekile kuphela kwizikhongozeli ezinkulu, ukusuka kwi-500-gal tanks zokuthutha iikhemikhali ezahlukeneyo ukuya kwi-20,000-gal tanks yezolimo.

▲Ifilimu: Ukusetyenzwa kwefilimu ye-PE ngokuqhelekileyo kusebenzisa inkqubo yefilimu evuthelweyo eqhelekileyo okanye ukusetyenzwa kweflethi.Uninzi lwe-PE lusetyenziselwa ifilimu, i-PE (LDPE) ye-low-density PE (LDPE) okanye i-linear low-density PE (LLDPE) iyafumaneka.Amabakala efilimu ye-HDPE asetyenziswa ngokubanzi apho ukunwebeka okuphezulu kunye nokunganyanzeki okugqwesileyo kuyadingeka.Ngokomzekelo, ifilimu ye-HDPE isoloko isetyenziselwa iingxowa zempahla, iingxowa zegrosari kunye nokupakishwa kokutya.

Ukusebenza kwemveliso

I-polyethylene ephezulu yoxinaniso ayinayo ityhefu, ayinambitheki, kwaye ayinavumba, kwaye ayinavumba elimhlophe elinendawo yokunyibilika malunga ne-130 ° C kunye nokuxinana kwe-0.941 kwi-0.960.Inokumelana nobushushu obuhle kunye nokumelana nokubanda, ukuzinza okulungileyo kweekhemikhali, ukuqina okuphezulu kunye nokuqina, kunye namandla afanelekileyo omatshini.Iipropathi zeDielectric kunye noxinzelelo lokusingqongileyo ukuchasana nokuqhekeka nazo zilungile.

Ukupakishwa kunye nokugcinwa

Gcina kude nomlilo kunye nokugquma ubushushu ngexesha lokugcina.Indawo yokugcina impahla kufuneka igcinwe yomile kwaye icocekile.Kuvinjelwe ngokungqongqo ukuxuba nakuphi na ukungcola, ukukhanya kwelanga kunye nemvula.Izithuthi kufuneka zigcinwe kwiikhareji ezicocekileyo, ezomileyo, ezigqunyiweyo okanye kwiikhabhathi, kwaye kungabikho zinto zibukhali njengezikhonkwane zentsimbi.Uthutho oluxutyiweyo kunye neehydrocarbons ezinuka kamnandi, iihalogenated hydrocarbons kunye nezinye izinyibilikisi eziphilayo azivumelekanga ngokungqongqo.

ukuhlaziya nokusebenzisa kwakhona

I-HDPE yeyona ndawo ikhula ngokukhawuleza kwimarike yokwenziwa ngokutsha kweplastiki.Oku kungenxa yokulungiswa kwayo ngokulula, iimpawu zokuthotywa okuncinci kunye nenani elikhulu lezicelo zeenjongo zokupakisha.Eyona nto iphambili yokurisayikilishwa kukulungisa kwakhona i-25% yezinto ezisetyenzisiweyo, ezifana ne-post-consumer recyclables (PCR), ngeHDPE esulungekileyo ukwenza iibhotile ezingadibaniyo nokutya.

Imibhobho ye-PE yonikezelo lwamanzi ziimveliso zokutshintshwa kwemibhobho yentsimbi yesintu kunye nemibhobho yamanzi okusela ye-PVC.


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