isicelo

I-Poly(vinyl chloride) Poly(vinyl chloride)

I-PVC iyipulasitiki ye-polyvinyl chloride, umbala ogqamile, ukumelana nokugqwala, iqinile futhi ihlala isikhathi eside, ngenxa yokwengezwa kwe-plasticizer, i-ejenti elwa nokuguga nezinye izinto ezisizayo ezinobuthi enqubweni yokukhiqiza, ngakho-ke imikhiqizo yayo ngokuvamile ayigcini ukudla nezidakamizwa.

I-PVC i-polyvinyl chloride, okuwumkhiqizo wepulasitiki owenziwe ngamafutha angama-43% kanye nosawoti ongu-57%.Uma kuqhathaniswa nezinye izinhlobo zemikhiqizo yepulasitiki, i-PVC isebenzisa izinto ezingavuthiwe ngempumelelo futhi yehlisa ukusetshenziswa kukaphethiloli.Ngesikhathi esifanayo, ukusetshenziswa kwamandla kokukhiqizwa kwe-PVC kuphansi kakhulu.Futhi ekusetshenzisweni sekwephuzile kwemikhiqizo ye-PVC, ingagaywa kabusha futhi iguqulelwe eminye imikhiqizo emisha noma ukushiswa ukuze kutholwe amandla.

I-PVC ekukhiqizeni izokwengeza i-stabilizer, kodwa i-stabilizer inamaphuzu angenabuthi futhi anobuthi, engeza kuphela usawoti oholayo njenge-stabilizer enobuthi, izoveza izingozi ezifihliwe.Kodwa imikhiqizo ye-PVC ixubene, amanye amabhizinisi amancane asebenzisa usawoti oholayo njenge-stabilizer, kunzima ukuhlangabezana nezindinganiso zezempilo ezifanele.Uma abathengi bekhetha impahla ye-PVC, kuhle ukuya emakethe yempahla yokwakha evamile enedumela eliqinisekisiwe nekhwalithi, bese ucela umphakeli ukuthi akhiphe umbiko wokuhlola.Abathengi kufanele banake ukuhlola imibhalo efanele kanye namamaki, bathole “okuhlobene nelayisense yezempilo yokuphepha yamanzi okuphuza imikhiqizo yezempilo” imikhiqizo iphephile.

I-UPVC

I-polyvinyl chloride eqinile (UPVC)

I-UPVC, eyaziwa nangokuthi i-PVC eqinile, iyi-amorphous thermoplastic resin eyenziwe nge-vinyl chloride monomer ngokusabela kwe-polymerization ngezithasiselo ezithile (njenge-stabilizer, lubricant, filler, njll.).

Ngaphezu kokusebenzisa izithasiselo, indlela yokuhlanganisa ukuguqulwa namanye ama-resin nayo yamukelwa, ukuze ibe nenani elisebenzayo elisobala.Lawa ma-resin yi-CPVC, PE, ABS, EVA, MBS nokunye.

I-viscosity encibilikayo ye-UPVC iphezulu futhi i-fluidity impofu.Ngisho noma ingcindezi yomjovo kanye nezinga lokushisa elincibilikayo likhuphuka, i-fluidity ngeke ishintshe kakhulu.Ngaphezu kwalokho, izinga lokushisa lokwakheka kwe-resin lisondelene kakhulu nezinga lokushisa lokubola okushisayo, futhi izinga lokushisa le-resin lingakheka lincane kakhulu, ngakho-ke luhlobo lwezinto ezinzima ukwenza.

Ukufakwa kwepayipi le-UPVC, izinzuzo zamapayipi

I-Lightweight: Ingxenye yezinto ze-UPVC ingu-1/10 kuphela wensimbi ekhonjiwe, kulula ukuyihambisa, ukuyifaka nokunciphisa izindleko.

Ukumelana namakhemikhali okuphakeme: I-UPVC ine-asidi enhle kakhulu nesisekelo ukumelana, ngaphandle kwe-asidi eqinile nesisekelo esiseduze nendawo yokugcwala noma ama-oxidising aqinile e-atmaximun.

I-non-conductive: Izinto ze-UPVC azikwazi ukuqhuba ugesi, futhi azigqwali yi-electrolysis kanye nezamanje, ngakho-ke asikho isidingo sokucutshungulwa kwesibili.

Ayikwazi ukushisa, noma ukusekela amandla omlilo, akukho ukukhathazeka komlilo.

Ukufakwa okulula, izindleko eziphansi: ukusika nokuxhuma kulula kakhulu, ukusetshenziswa komkhuba wokuxhuma i-PVC glue kuye kwafakazela ukuphepha okungcono kakhulu, ukusebenza okulula, izindleko eziphansi.

Ukuqina: Isimo sezulu esihle kakhulu, futhi asinakonakaliswa amagciwane nesikhunta.

Ukumelana okuphansi, izinga lokugeleza okuphezulu: udonga lwangaphakathi lubushelelezi, ukulahlekelwa kwamanzi okugeleza kuncane, ukungcola akulula ukunamathela odongeni lwe-tube ebushelelezi, ukugcinwa kulula, izindleko zokulondoloza ziphansi.

I-polypropylene polypropylene polypropylene polypropylene

I-PP iyipulasitiki ye-polypropylene, engenabuthi, ayinambitheki, ingacwiliswa emanzini abilayo angu-100 ℃ ngaphandle kokuguqulwa, akukho monakalo, i-asidi evamile, izinyibilikisi ze-alkali eziphilayo cishe azinawo umthelela kuwo.Isetshenziswa kakhulu izitsha zokudlela.

I-polypropylene yenziwe i-polymerized nge-polypropylene monomer.Ingxenye eyinhloko kwakuyi-polypropylene.Ngokusho kokwakheka kwe-monomer ebamba iqhaza ku-polymerization, ingahlukaniswa ngezinhlobo ezimbili: i-homogeneous polymerization kanye ne-copolymerization.I-Homopolymer polypropylene yenziwe i-polymerized isuka ku-propylene monomer eyodwa futhi inobucwebe obuphezulu, amandla emishini nokumelana nokushisa.I-copolymerized polypropylene yenziwe nge-copolymerized ngokungeza inani elincane le-ethylene monomer.

Izici zayo eziyinhloko:

1. Ukubukeka nezici zomzimba: umbala wemvelo, izinhlayiya ze-cylindrical zimhlophe futhi ziguquguqukayo, i-waxy;Ayinabuthi, ayinambitheki, ilangabi elivuthayo eliphuzi, inani elincane lentuthu emnyama, ukuncibilika okuconsayo, iphunga likapharafini.

2. Ukusetshenziswa okuyinhloko nokuphumayo: I-polypropylene eqoqwe emakethe isetshenziselwa ikakhulukazi imikhiqizo elukiwe, esetshenziswa kakhulu, ingasetshenziselwa izikhwama ezilukiweyo, intambo yokupakisha, ibhande elilukiweyo, intambo, isekela likakhaphethi nokunye, okukhiphayo konyaka okungaphezu kwalokho. amathani angu-800,000, okubalelwa ku-17% wesamba esiphelele se-polypropylene.

I-PE Polyethylene i-polyethylene

I-PE iyipulasitiki ye-polyethylene, izakhiwo zamakhemikhali ezizinzile, ngokuvamile zenza izikhwama zokudla neziqukathi ezihlukahlukene, i-asidi, i-alkali kanye nokuguguleka kwamanzi anosawoti, kodwa akufanele kusulwe noma kufakwe isihlanzi esiqinile se-alkaline.

I-PPR

I-copolymer polypropylene engahleliwe

1. Mayelana ne-Copolymer, i-copolymer ibizwa ngokuthi i-Homonolymer.I-copolymer eyenza ama-copolymers kuma-monomers amabili noma ngaphezulu ibizwa ngokuthi i-copolymer;

;2. Mayelana ne-Propylene ne-Ethene, i-PP-B ne-PP-R iba i-Poly poly Copolymer;phakathi kwazo,

I-1) Ukusebenzisa inqubo ye-copolymerization yegesi ethuthukisiwe, i-PE yenziwa ngokungahleliwe futhi ngokulinganayo i-polymerized kuchungechunge lwamangqamuzana e-PP, le nto eluhlaza ibizwa ngokuthi i-PP-R (i-polymerization polypropylene engahleliwe);

2) Ukusebenzisa i-PP kanye ne-PE block copolymerization, le nto eluhlaza ibizwa ngokuthi i-PP-B (block copolymerization polypropylene)

I-PEX

I-Crosslinked polyethylene (PEX)

Isingeniso sepayipi le-polyethylene (PEX) elixhunywe ngokuphambana

Amapayipi e-polyethylene aphezulu (i-HDPE ne-MDPE), ama-macromolecules awo aqondile, anobunzima obukhulu bokumelana nokushisa okuphansi kanye nokumelana nokukhuphuka, ngakho-ke amapayipi e-polyethylene aphezulu ajwayelekile awafanele ukudlulisa okuphakathi nendawo enezinga lokushisa elingaphezu kuka-45 ℃."Ukuxhumanisa" kuyindlela ebalulekile yokuguqulwa kwe-polyethylene.Isakhiwo se-macromolecular esiqondile se-polyethylene siba i-PEX enesakhiwo senethiwekhi enezinhlangothi ezintathu ngemva kokuxhumanisa, okuthuthukisa kakhulu ukumelana nokushisa nokumelana nokukhasa kwe-polyethylene.Ngaleso sikhathi, ukumelana kwayo nokuguga, izakhiwo zemishini kanye nokubonakala kwayo kuthuthukiswa kakhulu.Ngesikhathi esifanayo ifa engokwemvelo ukumelana ukugqwala amakhemikhali kanye nezimo of polyethylene ipayipi.Kunezinhlobo ezintathu zamashubhu e-PEX atholakala ngokudayiswa.Ipayipi le-PEXa ipayipi le-PEXb ipayipi le-PEXC

Izici ze-PEX tube

Ukushisa okuhle kakhulu nokumelana nokubanda, amandla aphezulu okushisa ekushiseni okuphezulu:

Ukuqina okuhle kakhulu kokumelana nezinga lokushisa eliphansi:

Ukushisisa ngaphandle kokuncibilika:

Ukumelana ne-creep okungavamile: Idatha ye-Creep iyisisekelo esibalulekile sokwakheka komkhiqizo nokukhetha impahla yobunjiniyela.Uma kuqhathaniswa nezinto zendabuko ezifana nezinsimbi, ukuziphatha kokucindezeleka kwamapulasitiki kuncike kakhulu esikhathini sokulayisha kanye nezinga lokushisa.Isici sokunyonyoba se-PEX tube cishe singelinye lamapayipi afaneleka kakhulu phakathi kwamapayipi epulasitiki ajwayelekile.Ukumelana ne-creep okungavamile: Idatha ye-Creep iyisisekelo esibalulekile sokwakheka komkhiqizo nokukhetha impahla yobunjiniyela.Uma kuqhathaniswa nezinto zendabuko ezifana nezinsimbi, ukuziphatha kokucindezeleka kwamapulasitiki kuncike kakhulu esikhathini sokulayisha kanye nezinga lokushisa.Isici sokunyonyoba se-PEX tube cishe singelinye lamapayipi afaneleka kakhulu phakathi kwamapayipi epulasitiki ajwayelekile.

Impilo yesevisi engapheli:

Ngemuva kokuthi ishubhu ye-PEX isiphumelele ukuhlolwa kwezinga lokushisa elingu-110 ℃, ingcindezi yendandatho engu-2.5MPa kanye nesikhathi esingu-8760h, kungatholwa ukuthi impilo yayo yesevisi eqhubekayo yeminyaka engama-50 ku-70℃.