Quick Details
Chigadzirwa ID: EI042502KK
Zita dhayamita: 12mm-110mm
Chiyero chekumanikidza: 0.25Mpa, 0.4Mpa, 0.6Mpa
Inokodzera: Mapombi ekudiridza epakati uye akakwirira anoshandiswa kune nzvimbo dzepasi pevhu
mapaipi makuru senge pombi kudiridza, micro-sprinkler kudiridza;mapaipi ekudiridza akaderera anogona
Isai mapaipi emapazi ekudiridza pombi, kudiridza madiridziro, masisitimu ekudiridza.
Inoshanda tembiricha: 0-45 ℃
Yekubatanidza modhi: Iyo inonyanya kubatana nekukurumidza kubatana.
Dayu Water Saving Group Co., Ltd. yakavambwa muna 1999. Ibhizimusi renyika repamusoro-soro rakavakirwa paChinese Academy yeMvura Sayenzi, Sainzi neTekinoroji Yekusimudzira Center yeBazi reMvura, iyo Chinese Academy yeScience, iyo Chinese Academy yeUinjiniya uye mamwe masangano ekutsvagisa sainzi.Yakanyorwa pane iyo Growth Enterprise Market.Stock code: 300021. Kambani yakasimbiswa kwemakore makumi maviri uye yakagara yakatarisa uye yakazvipira kune mhinduro uye basa rekurima, nzvimbo dzekumaruwa uye zviwanikwa zvemvura.Yakagadzirika kuita muunganidzwa wekuchengetedza mvura yekurima, kupihwa kwemvura mumadhorobha nekumaruwa, kucheneswa kwesuweji, nyaya dzemvura dzakangwara, kubatanidza hurongwa hwemvura, kutonga kwemvura uye kudzoreredza uye mimwe minda.Inyanzvi system solution mupi weiyo indasitiri yese cheni inobatanidza kuronga kweprojekiti, dhizaini, kudyara, kuvaka, kushanda, manejimendi uye kugadzirisa masevhisi.Ndiyo yekutanga indasitiri mumunda wekuchengetedza mvura yekurima muChina uye mutungamiri wepasi rose.
High-density polyethylene, zita reChirungu "High Density Polyethylene", kana "HDPE" kwenguva pfupi.HDPE icrystalline yakanyanya, isiri-polar thermoplastic resin.Kuonekwa kweiyo HDPE yepakutanga ine mukaka chena, uye chikamu chakatetepa chinopenya kune imwe nhanho.PE ine yakanakisa kuramba kune mazhinji emumba uye maindasitiri makemikari.Mamwe marudzi emakemikari anogona kukonzera kuora kwemakemikari, senge corrosive oxidants (concentrated nitric acid), anonhuwirira hydrocarbons (xylene) uye halogenated hydrocarbons (carbon tetrachloride).Iyo polymer haina-hygroscopic uye ine yakanaka mhute yekudzivirira, uye inogona kushandiswa pakurongedza.HDPE ine zvinhu zvakanaka zvemagetsi, kunyanya iyo yakakwira dielectric simba rekudzivirira, zvichiita kuti ive yakakodzera kwazvo waya netambo.Magiredhi epakati kusvika kupamusoro-soro ane huremu hwemamorekuru ane simba rekudzivirira, kunyangwe patembiricha yemumba uye kunyangwe patembiricha yakaderera ye -40F.
HDPE ndeye thermoplastic polyolefin inogadzirwa necopolymerization ye ethylene.Kunyangwe HDPE yakatangwa muna 1956, plastiki iyi haisati yasvika padanho rekukura.Izvi zvakajairwa-chinangwa zvinhu zvinogara zvichivandudza mashandisirwo ayo matsva uye misika.
Main features
HDPE is non-polar thermoplastic resin ine high crystallinity.Kuonekwa kweiyo HDPE yepakutanga ine mukaka chena, uye chikamu chakatetepa chinopenya kune imwe nhanho.PE ine yakanakisa kuramba kune mazhinji emumba uye maindasitiri makemikari.Mamwe marudzi emakemikari anogona kukonzera kuora kwemakemikari, senge corrosive oxidants (concentrated nitric acid), anonhuwirira hydrocarbons (xylene) uye halogenated hydrocarbons (carbon tetrachloride).Iyo polymer haina-hygroscopic uye ine yakanaka mhute yekudzivirira, uye inogona kushandiswa pakurongedza.HDPE ine zvinhu zvakanaka zvemagetsi, kunyanya iyo yakakwira dielectric simba rekudzivirira, zvichiita kuti ive yakakodzera kwazvo waya netambo.Magiredhi epakati kusvika kupamusoro-soro ane huremu hwemamorekuru ane simba rekudzivirira, kunyangwe patembiricha yemumba uye kunyangwe patembiricha yakaderera ye -40F.Hunhu hwakasiyana hwemagiredhi akasiyana eHDPE ndiko kusanganiswa kwakakodzera kwezvinhu zvina zvakakosha: density, molecular weight, molecular weight distribution uye additives.Akasiyana macatalyst anoshandiswa kugadzira akagadziridzwa mapolymer ane akakosha zvivakwa.Iko kusanganiswa kweaya akasiyana anoburitsa HDPE mamakisi ezvinangwa zvakasiyana;kuwana chiyero chakanakisa mukuita.
density
Uyu ndiwo musiyano mukuru unotemesa hunhu hweHDPE, kunyangwe iwo mana akasiyana ataurwa anokanganisa.Ethylene ndiyo inonyanya kushandiswa ye polyethylene.Mamwe mashoma macomonomers, akadai se1-butene, 1-hexene kana 1-octene, anowanzo shandiswa kuvandudza mashandiro epolymer.ZveHDPE, zvirimo zvevashoma pamusoro pemamonomers kazhinji hazvipfuure 1% -2%.Kuwedzerwa kwecomonomer zvishoma kunoderedza crystallinity yepolymer.Shanduko iyi inowanzoyerwa nedensity, ine hukama hwemutsara necrystallinity.The general classification yeUnited States inoenderana neASTM D1248, uye density yeHDPE i0.940g/.Pamusoro C;Density range yeMDPE ndeye 0.926 ~0.940g/CC.Mamwe mapoka dzimwe nguva anoisa MDPE seHDPE kana LLDPE.MaHomopolymers ane hupamhi hwepamusoro, kuomarara kwepamusoro, kupindirana kwakanaka uye nzvimbo yepamusoro yekunyungudika, asi kazhinji ane kushomeka kwekupokana nemamiriro ekunze kusagadzikana kupaza (ESCR).ESCR ndiko kugona kwePE kuramba kutsemuka kunokonzerwa nemakanika kana kemikari kusagadzikana.Higher density kazhinji inovandudza simba remuchina, senge kusimba kwesimba, kuoma, uye kuoma;thermal properties dzakadai so softening point tembiricha uye tembiricha yekukanganisa kupisa;uye kusapindirana, sekukwanisa kupindira kwemhepo kana mhute yemvura.Lower density inovandudza simba rayo rekuita uye E-SCR.Polymer density inonyanya kukanganiswa nekuwedzera kwemacomonomers, asi kusvika padiki nekurema kwema molecular.Iyo yakakwira molecular weight percentage inoderedza density zvishoma.Semuenzaniso, mahomopolymers ane density dzakasiyana mune dzakasiyana siyana dzemamorekuru.
Kugadzira uye catalyst
Iyo yakajairika nzira yekugadzira yePE ndeye slurry kana gasi chikamu chekugadzirisa, uye mashoma anogadzirwa nemhinduro chikamu chekugadzirisa.Zvese izvi maitiro exothermic reactions anosanganisira ethylene monomer, a-olefin monomer, catalyst system (inogona kunge inodarika komboni imwe) uye akasiyana marudzi ehydrocarbon diluent.Hydrogen uye mamwe ma catalysts anoshandiswa kudzora huremu hwema molecular.Iyo slurry reactor inowanzoita tangi yakamutswa kana inonyanya kushandiswa yakakura-chikuru loop reactor umo slurry inogona kutenderedzwa nekumutswa.Kana ethylene uye comonomer (sezvinodiwa) zvakasangana nekatani, polyethylene particles inoumbwa.Mushure mekubvisa diluent, iyo polyethylene granules kana poda granules yakaomeswa uye izvo zvinowedzera zvinowedzerwa zvinoenderana nedosage kugadzira pellets.Mutsetse wemazuva ano wekugadzira une mareactor akakura ane mapatya screw extruder anogona kuburitsa anopfuura 40,000 mapaundi ePE paawa.Kuvandudzwa kwezvinokonzeresa kunobatsira mukuvandudza mashandiro emagiredhi matsva eHDPE.Mhando mbiri dzinowanzo shandiswa dzezvinokonzeresa iPhilips 'chromium oxide-based catalysts uye titanium compound-alkyl aluminium catalysts.Iyo HDPE inogadzirwa nePhillips catalyst ine yepakati-yakafara molecular uremu kugovera;iyo titanium-alkyl aluminium catalyst ine yakamanikana molecular uremu kugovera.Iyo catalyst inoshandiswa mukugadzira yakamanikana MDW mapolymer mune mbiri reactor inogona zvakare kushandiswa kugadzira yakakura MDW mamaki.Semuyenzaniso, mareactor maviri munhevedzano anogadzira zvakasiyana zvakasiyana mamolecular huremu zvigadzirwa anogona kugadzira bimodal molecular weight polymers ane huwandu hwakazara hwekugovera huremu hwemamorekuru.PE pombi fittings
Molecular uremu
Huremu hwemamorekuru huremu hunokonzeresa yakakwira polymer viscosity, asi viscosity inobatanawo netembiricha uye shear rate inoshandiswa muyedzo.Rheology kana molecular huremu kuyerwa kunoshandiswa kuratidza huremu hwemamorekuru echinhu.HDPE mamakisi kazhinji ane huremu hwemamorekuru hwe40 000 kusvika 300 000, uye huremu hweavhareji yemamorekuru huremu hunenge hunoenderana nemelt index range, kureva, kubva pa100 kusvika 0. 029/10min.Kazhinji, yakakwirira MW (yakaderera melt index MI) inowedzera kunyunguduka simba, kusimba kuri nani uye ESCR, asi yakakwirira MW inoita kugadzirisa.
Iyo nzira yakanyanya kuoma kana inoda kudzvanywa kwepamusoro kana tembiricha.
Molecular weight distribution (MWD): Iyo WD yePE inosiyana kubva padiki kusvika pahupamhi zvichienderana necatalyst inoshandiswa uye maitiro ekugadzirisa.
Iyo inonyanya kushandiswa MWD kuyerwa indekisi ndeye unevenness index (HI), iyo yakaenzana nehuremu hwepakati molecular uremu (MW) yakakamurwa nenhamba yeavhareji uremu hwemamorekuru (Mn).Iyi index index yeese HDPE mamakisi ndeye 4-30.Iyo yakamanikana MWD inopa yakaderera warpage uye yakakwirira simba panguva yekuumba maitiro.Iyo yepakati kusvika yakafara MWD inopa processability kune akawanda extrusion maitiro.Wide MWD inogona zvakare kuvandudza kunyunguduka simba uye zvinokambaira kuramba.
additive
Kuwedzerwa kwema antioxidants kunogona kudzivirira kuparara kwepolymer panguva yekugadzirisa uye kudzivirira oxidation yechigadzirwa chakapedzwa panguva yekushandiswa.Antistatic additives anoshandiswa mune akawanda ekurongedza mamakisi kudzikisa kunamatira kwemabhodhoro kana kurongedza kuguruva netsvina.Mashandisirwo chaiwo anoda akakosha ekuwedzera maumbirwo, akadai semhangura inhibitors ane chekuita newaya uye tambo dzekushandisa.Yakanakisa yemamiriro ekunze kuramba uye anti-ultraviolet (kana chiedza chezuva) inogona kuwanikwa nekuwedzera anti-UV additives.Pasina kuwedzerwa kweUV-resistant kana carbon black PE, zvinokurudzirwa kuti usarambe uchiishandisa kunze.Yepamusoro-giredhi kabhoni dema pigment inopa yakanakisa UV kuramba uye inowanzoshandiswa mukushandisa kunze, senge waya, tambo, matangi matangi kana pombi.
nzira dzekugadzirisa
PE inogona kugadzirwa nenzira dzakasiyana siyana dzekugadzirisa.Uchishandisa ethylene seyakanyanya mbishi zvinhu, propylene, 1-butene, uye hexene secopolymer, pasi pechiito checatalyst, slurry polymerization kana gasi chikamu chepolymerization process inotorwa, uye iyo yakawanikwa polymer inopenya, yakaparadzaniswa, yakaomeswa, granulated. , etc. Maitiro ekuwana zvigadzirwa zvakapedzwa nezvikamu zvakafanana.Kusanganisira senge sheet extrusion, firimu extrusion, pombi kana profil extrusion, blow molding, jekiseni kuumba uye kutenderera kuumbwa.
▲Extrusion: Giredhi rinoshandiswa pakugadzira extrusion rinowanzo kuve nemelt index isingasviki 1 uye yepakati-kusvika-yakafara MWD.Panguva yekugadzirisa, yakaderera MI inogona kuwana yakakodzera kunyunguduka simba.Yakapamhama MWD mamakisi akanyanya kukodzera kuextrusion nekuti iwo ane kukurumidza kugadzirwa kwepamusoro, kuderera kwekufa uye kuderedzwa kunyungudika kutyoka.
PE ine akawanda extrusion application, senge waya, tambo, hose, pombi uye profiles.Mapombi epombi anotangira kubva padiki-chikamu cheyero pombi dzegasi rechisikigo kusvika kune makobvu-akadzivirirwa nemapaipi matema ane dhayamita ye48in yemapombi eindasitiri nemadhorobha.Kushandiswa kwepombi dzakakura-dhayamita dzakakomba madziro sechinzvimbo chepombi dzemvura inonaya dzakagadzirwa nekongiri nedzimwe pombi dzesuweji dziri kukura nekukurumidza.
Sheet uye thermoforming: Iyo thermoforming lining yemazhinji mafiriji makuru epikiniki inogadzirwa nePE, iyo yakaoma, yakareruka uye yakasimba.Mamwe mapepa uye zvigadzirwa zve thermoformed zvinosanganisira madhaka, matangi emagetsi, magadhi epani, mabhokisi ekutumira uye matangi.Huwandu hukuru hwekukurumidzira mashizha ekunyorera machisi kana misha yepasi pemadziva, ayo akavakirwa pakuoma, kuramba kwemakemikari uye kusamira kweMDPE.
▲Blow molding: Inopfuura 1/3 yeHDPE inotengeswa muUnited States inoshandiswa pakuumba.Izvi zvinobva kumabhodhoro ane bleach, mafuta emota, detergent, mukaka nemvura yakadirwa kusvika kumafiriji mahombe, matangi emafuta emota nemagaba.Hunhu hwekuvhuvhuta kuumba mamakisi, senge kunyungudika simba, ES-CR uye kuoma, akafanana neaya anoshandiswa pepa uye thermoforming application, saka mamakisi akafanana anogona kushandiswa.
Jekiseni-kuvhuvhuta kuumbwa kunowanzo shandiswa kugadzira midziyo midiki (isingasviki 16oz) yekurongedza mishonga, shampoos uye zvizorwa.Imwe yemabhenefiti eiyi maitiro ndeyekuti mabhodhoro ekugadzira anochekwa otomatiki, pasina kudiwa kwematanho ekupedzisira-ekupedzisira senge general blow molding.Kunyangwe mamwe mamakisi akatetepa eMWD achishandiswa kuvandudza kupera kwepasi, epakati kusvika pahupamhi MWD mamakisi anowanzo shandiswa.
▲Jekiseni molding: HDPE ine zvisingaverengeki zvikumbiro, kubva kune inogona kushandiswa zvakare yakatetepa-yakavharidzirwa zvinwiwa makapu kusvika ku5-gsl magaba, ayo anodya 1/5 yepamba HDPE.Majekiseni ekuumba mamakisi kazhinji ane melt index ye5-10.Kune mamakisi ane kuoma uye kuderera kwemvura uye yakakwirira fluidity mamakisi ane processability.Zvishandiso zvinosanganisira zvinodikanwa zvezuva nezuva uye chikafu chakatetepa-chidziro chekuvhara;chikafu chakaoma uye chakasimba uye magaba epende;kupikisa zvakanyanya kune zvakatipoteredza kusagadzikana kupaza maapplication, senge diki injini matangi emafuta uye 90-gal marara magaba.
▲ Rotational molding: Zvishandiso zvinoshandisa nzira iyi yekugadzira zvinowanzopwanyirwa kuita hupfu, izvo zvinonyungudutswa uye kuyerera mukupisa kutenderera.Rotomolding inoshandisa marudzi maviri ePE: general-chinangwa uye cross-linkable.General-chinangwa MDPE/HDPE kazhinji ine density kubva 0.935 kusvika 0.945g/CC, ine nhete MWD, kuitira kuti chigadzirwa chine hukuru hukuru uye idiki warpage, uye indekisi yayo yekunyunguduka kazhinji iri pakati pe3-8.Magiredhi epamusoro eMI kazhinji haana kukodzera nekuti haana mhedzisiro uye kwezvakatipoteredza kusagadzikana kutsemuka kuramba kunotarisirwa kune zvigadzirwa zverotomold.
Yepamusoro-inoshanda inotenderera yekuumba maapplication anoshandisa iyo yakasarudzika zvimiro zvekemikari-yakabatana-yakabatana mamakisi.Aya magiredhi ane mvura yakanaka muchikamu chekutanga chekutenderera, uyezve crosslink kuti vagadzire yavo yakanakisa kushushikana kwezvakatipoteredza kusagadzikana kwekuramba uye kuoma.Pfeka kuramba uye kusagadzikana kwemamiriro ekunze.Cross-linkable PE inokodzera chete midziyo mihombe, kubva ku500-gal matangi ekutakura makemikari akasiyana-siyana kuenda ku20,000-gal matangi ekurima.
▲ Firimu: PE firimu kugadzirisa rinowanzo shandisa rakajairwa kupepereswa firimu kugadzirisa kana flat extrusion processing.Yakawanda PE inoshandiswa kufirimu, general low-density PE (LDPE) kana linear low-density PE (LLDPE) iripo.HDPE bhaisikopo mamakisi anowanzo shandiswa uko kutambanudza kwepamusoro uye kusamira zvakanaka kunodiwa.Semuenzaniso, HDPE firimu rinowanzo shandiswa kumabhegi emidziyo, mabhegi egirosari uye kurongedza chikafu.
Kuita kwechigadzirwa
High-density polyethylene haina muchetura, inoravira, uye isina kunhuwa zvidimbu zvichena zvine nzvimbo yekunyunguduka inosvika 130 ° C uye hukama hwepakati hwe0.941 kusvika 0.960.Iyo ine yakanaka yekudzivirira kupisa uye kutonhora kuramba, yakanaka kugadzikana kwemakemikari, kusimba kwakanyanya uye kusimba, uye yakanaka mechanical simba.Dielectric zvivakwa uye kwezvakatipoteredza kusagadzikana kuputsa kuramba zvakare kwakanaka.
Packaging uye kuchengetedza
Chengetedza kure nemoto uye kupisa kupisa panguva yekuchengetedza.Imba yekuchengetera zvinhu inofanira kugara yakaoma uye yakatsvinda.Izvo zvinorambidzwa zvachose kusanganisa mune chero tsvina, chiedza chezuva uye mvura.Zvifambiso zvinofanira kuchengetwa mungoro dzakachena, dzakaoma, dzakavharwa kana mudzimba, uye hapafaniri kuva nezvinhu zvakapinza zvakadai sezvipikiri zvesimbi.Zvekufambisa zvakasanganiswa zvine mahydrocarbon anonhuwirira, halogenated hydrocarbons uye zvimwe zvinonyungudutsa zveorganic zvinorambidzwa zvachose.
dzokorora uye shandisa zvakare
HDPE ndiyo inokurumidza kukurumidza chikamu chemusika wekudzoreredza mapurasitiki.Izvi zvinonyanya kukonzerwa nekugadziriswa kwayo kuri nyore, kushomeka kushatisa maitiro uye huwandu hwayo hukuru hwekushandisa kwezvinangwa zvekurongedza.Iyo huru yekudzokorodza ndeye kudzokorodza makumi maviri neshanu muzana ezvekushandisa zvakare, senge post-consumer recyclables (PCR), ine HDPE yakachena kugadzira mabhodhoro asiri kusangana nechikafu.
Mapombi ePE ekugovera mvura ndiwo anotsiviwa nepombi dzesimbi dzechinyakare uye mapaipi emvura ekunwa ePVC.
