Kana vashandisi vazhinji vanosarudzaPE mapaipi, ivo vanowanzova nyore kuita zvikanganiso nekuda kwekusanzwisisa kwakakwana kwazviri.Ivo havazive kana kushandisa zvisina tsarukano copolymerized polypropylene pombi kana polyethylene pombi mapurojekiti ekupa mvura mukuvaka.Ndeupi musiyano uripo pakati pavo?Mucheka weshinda?Rega ndikuzivise.
Pfungwa huru ndedzinotevera:
Mumvura yekunwa, PE inowanzoshandiswa sepombi yemvura inotonhora;PPR (inokosha mvura inopisa zvinhu) inogona kushandiswa sepombi yemvura inopisa;kunewo PPR (mvura inotonhora zvinhu) inoshandiswa sepombi yemvura inotonhora;Kana iri pombi yemvura inopisa, hongu PPR iri nani;(kana iri pombi yemvura yekunwa yekushongedza imba, saka hapana chikonzero chekusiyanisa, kunyanya PPR inoshandiswa kupfuura PE)Kana uri kuita pombi dzemvura inotonhora, unogona kureva misiyano inotevera:
1. Kuenzanisa kwekudzivirira kwekushisa pakati pePPR mvura pombi uyePE pombi yemvura.
Mukushandiswa kwakajairika, pombi yemvura yePE ine tembiricha yakagadzikana ye70 ° C uye tembiricha ye -30 ° C.Izvi zvinoreva kuti, mumamiriro ekushisa akadaro, kushandiswa kwenguva refu kwePE yemvura pombi yakachengeteka uye yakavimbika.
Mukushandiswa kwakajairika, pombi yemvura yePPR ine tembiricha yakagadzikana ye70 ° C uye tembiricha ye -10 ° C.Inoratidza zvakare kuti mune ino tembiricha yemhando, kushandiswa kwenguva refu kwePPR mapaipi emvura zvakare yakachengeteka uye yakavimbika.Zvinogumiswa kuti mapaipi emvura ePE ane yakaenzana kupisa tembiricha kuramba sePPR pombi dzemvura.Nekudaro, mapaipi emvura ePE ari nani pane mapaipi emvura ePPR maererano nekuderera kwekushisa kwekuita.
2.mutsauko pakati pePE mvura pombi uye PPR pombi dzemvura maererano nehutsanana
Iyo huru yemakemikari molecular chikamu chePE mvura pombi ndeye polyethylene.Vaverengi vakadzidza organic chemistry vanoziva kuti kuumbwa kwechigadzirwa ichi maatomu maviri ekabhoni akasanganiswa nemaatomu ehydrogen mashanu, rimwe racho rinosanganiswa neatomu kabhoni nekaviri bond, kozoti ethylene The single molecule yepolymer inopolymerized mu neimwe nzira, uye chigadzirwa chakadaro chigadzirwa che polyethylene.Saka chii chinonzi PPR pombi yemvura?Chinhu chikuru chePPR pombi yemvura ipropylene, kureva kuti, maatomu matatu ekabhoni anosanganiswa nemaatomu manomwe ehydrogen, uye atomu imwe yehydrogen inosanganiswa neatomu kabhoni ine chisungo cheviri, uyezve chigadzirwa chinoumbwa mushure mepolymerization chigadzirwa chepolypropylene.Zvigadzirwa zvakadaro zvinenge zvakafanana maererano nehutsanana uye kuchengeteka.Chinhu chakakosha ndechekuti izvo mbishi zvinhu zvinoshandiswa nebhizinesi zvinosangana nezvinodiwa, kwete mutsauko pakati pezvigadzirwa zviviri izvi.Izvo zvakare hazvina musoro kushambadza kuti mapaipi emvura ePE ane hutsanana kupfuura mapaipi emvura ePPR mumapepanhau.Mapombi ese emvura anokodzera ePE uye zvigadzirwa zvepombi yemvura yePPR zvinofanirwa kuongororwa hutsanana (kunze kweizvo zvigadzirwa zvemanyepo uye zvisina kunaka).Ihwowo hunyengeri kune vatengi kutaura kuti mapaipi emvura ePE ane hutsanana uye akachengeteka kupfuura mapaipi emvura ePPR.
3. Elastic modulus
Iyo elastic modulus yePPR mvura pombi ndeye 850MPa.Pombi yemvura yePE ndeyepakati density polyethylene, uye elastic modulus yayo inongova 550MPa.Iyo ine yakanaka kuchinjika uye isina kukwana kuomarara.Inoshandiswa mumunda wekuvaka mvura.Kwete kunaka.
Thermal conductivity: PPR pombi yemvura ndeye 0.24, PE pombi yemvura ndeye 0.42, iyo inenge yakapetwa kaviri pakukwirira.Kana yakashandiswa mukupisa pasi, iyi ndiyo pfungwa yayo yakasimba.Kupisa kwakanaka kunoreva kuti kupisa kwemwaranzi mhedzisiro kuri nani, asi kunoshandiswa mumapombi emvura inopisa.Izvo zvisingabatsiri ndezvokuti kana kupisa kwekushisa kwakanaka, kurasikirwa kwekupisa kuchava kukuru, uye kupisa kwepamusoro kwepombi kuchava kwakakwirira, iyo iri nyore kupisa.
4. Welding performance
Kunyange zvazvo zvose PPR pombi dzemvura uye PE mvura pombi inogona kupisa-yakanyunguduka welded, PPR mvura pombi zviri nyore kushanda, uye flanging yePPR mvura pombi dzakatenderedza, nepo flanging yePE mvura pombi isiri nguva uye nyore kuvhara;tembiricha yekudziya inosiyanawo, mapaipi emvura ePPR ari 260 ° C, PE pombi dzemvura Tembiricha iri 230 ° C, uye muchina wakakosha welding wePPR pombi dzemvura pamusika uri nyore kuwedzeredza uye kukonzera kubuda kwemvura.Uye zvakare, nekuti iyo PE yemvura pombi zvinhu zviri nyore kuita oxidize, maturusi akakosha anofanirwa kushandiswa kukwenya ganda reoxyde pamusoro pepamusoro isati yanyungudutswa, kana zvisina kudaro pombi yakanyatsobatanidzwa haigone kuumbwa, uye pombi inotapukira kudonha kwemvura, saka. kuvakwa kwakatonyanya kunetsa.
5. Low tembiricha kukanganisa simba:
Iyi poindi isimba rePE mvura pombi zvinhu maererano nezviratidzo.PPR mapaipi emvura akasimba kupfuura mapaipi emvura ePE, uye mapaipi emvura ePE anochinjika kupfuura mapaipi emvura ePPR.Izvi zvinotemerwa nehunhu hwechinyorwa, asi hazvina zvazvinoreva kuwedzeredza kutonhora brittleness yePPR mvura pombi., PPR pombi dzemvura dzakashandiswa muChina kwemakore anopfuura gumi.Vagadziri vakaderedza zvishoma nezvishoma njodzi dzakavanzika dzinokonzerwa nekubata zvisina kunaka kuburikidza nekurongedza kunoshanda uye kusimbisa kushambadza.Kubata kwehutsinye uye kuvaka kunokonzeresa mapaipi emvura ePE pamusoro.Kukwenya uye kutsemuka kunetseka;kana ikashandiswa pasi pemamiriro ekunze ekupisa, chero pombi inofanira kuiswa insulation, zvikasadaro kuwedzera kwevhoriyamu kunokonzerwa nechando kuchaita kuti pombi iite chando nekutsemuka.PPR pombi ipombi yakanaka yekunwa pombi dzemvura, uye nharaunda yekunze haina kunaka semukati memba.PE mapaipi anoshandiswa, inovawo chinhu chakanakira pombi yemvura pombi huru.
6. Kukura kwepombi
Iyo yakakura saizi inogona kugadzirwa yePE pombi ndeye dn1000, uye iyo yakatarwa yePPR ndeye dn160.Naizvozvo, mapaipi ePE anonyanya kushandiswa sepombi dzemvura, uye pombi dzemvura dzinowanzova PPR.
Nguva yekutumira: Jun-30-2023
