Izinzuzo zamapayipi e-PVC
1. Ukuthuthwa: Izinto ze-UPVC zinamandla adonsela phansi athile ayingxenye eyodwa kweziyishumi kuphela kunensimbi ephonswe ngensimbi, okwenza kube lula ukuzithumela nokuyifaka.
2. I-UPVC inokumelana okuphezulu kwe-asidi kanye ne-alkali, ngaphandle kwama-asidi aqinile kanye nama-alkali aseduze nendawo yokugcwala noma ama-oxidizing agents aqinile ekugxilweni okuphezulu.
3. Akudingi ukuhanjiswa: Ngenxa yokuthi izinto ze-UPVC azidingi ukuhanjiswa futhi azigugi uma zivezwa kugesi noma ku-electrolysis, akukho ukucubungula okwengeziwe okudingekayo.
4. Akukho ukukhathazeka ngokuvikelwa komlilo ngoba akunakushisa noma kukhuthaze ukusha.
5. Ukufakwa kulula futhi akubizi kakhulu ngenxa yokusebenzisa ingcina ye-PVC, eye yabonakala ithembekile futhi iphephile, kulula ukuyisebenzisa, futhi ayibizi kakhulu. Ukusika nokuxhuma nakho kulula kakhulu.
6. Ukumelana nesimo sezulu okuhle kakhulu kanye nokumelana nokugqwala kwamagciwane kanye nesikhunta kwenza noma yini iqine.
7. Ukumelana okuncane kanye nesivinini esikhulu sokugeleza: udonga lwangaphakathi olubushelelezi lunciphisa ukulahleka koketshezi, luvimbela imfucumfucu ukuthi inamathele odongeni lwepayipi elibushelelezi, futhi lwenza ukulungiswa kube lula futhi kungabizi.

Ipulasitiki akuyona i-PVC.
I-PVC iyipulasitiki enezinjongo eziningi engasetshenziswa ezintweni ezahlukahlukene, okuhlanganisa ifenisha evamile kanye nezindawo zokwakha.
Esikhathini esidlule, i-PVC yayiyipulasitiki esetshenziswa kakhulu emhlabeni futhi yayinezindlela ezahlukene zokusetshenziswa. Isetshenziswa kabanzi ezintweni zokwakha, izimpahla zezimboni, izinto ezidingekayo zansuku zonke, isikhumba saphansi, amathayili aphansi, isikhumba sokwenziwa, amapayipi, izintambo, kanye nezintambo, amafilimu okupakisha, amabhodlela, imicu, izinto zokufaka igwebu, kanye nezinto zokuvala, phakathi kwezinye izinto.

I-International Agency for Research on Cancer ye-World Health Organisation yaqala ukuhlanganisa uhlu lwezinto ezibangela umdlavuza ngo-Okthoba 27, 2017, kanti i-polyvinyl chloride yayingenye yezinhlobo ezintathu zezinto ezibangela umdlavuza kulolo hlu.
I-polymer e-Amorphous enezimpawu zesakhiwo sekristalu, i-polyvinyl chloride iyi-polymer ethatha indawo ye-athomu eyodwa ye-chlorine nge-athomu eyodwa ye-hydrogen ku-polyethylene. Lo mbhalo uhlelwe kanje: n [-CH2-CHCl] Iningi lama-monomer e-VCM ahlanganiswe ngendlela yokuhlela kusuka ekhanda kuya emsila ukuze akhe i-polymer eqondile eyaziwa ngokuthi i-PVC. Wonke ama-athomu e-carbon ahlanganiswa ndawonye ngamabhondi futhi ahlelwe ngendlela yephethini ye-zigzag. I-athomu ngayinye ye-carbon ine-hybrid ye-sp3.

I-PVC molecular chain inesakhiwo esijwayelekile se-syndiotactic esifushane. I-syndiotacticity iyanda njengoba izinga lokushisa le-polymerization lehla. Kunezakhiwo ezingazinzile ezifaka phakathi isakhiwo sekhanda nekhanda, i-branched chain, i-double bond, i-allyl chloride, kanye ne-tertiary chlorine esakhiweni se-polyvinyl chloride macromolecular, okuholela ezinkingeni ezifana nokumelana nokuguquguquka kokushisa okuphansi kanye nokumelana nokuguga. Amaphutha anjalo angalungiswa ngemva kokubonakala sengathi axhumene.

Indlela yokuxhuma i-PVC:
1. Kusetshenziswa inhlaka ethile ukuhlanganisa izinto zokufaka amapayipi e-PVC; inhlaka kumele inyakaziswe ngaphambi kokusebenzisa.
2. Ingxenye yesokhethi kanye nepayipi le-PVC kudingeka kuhlanzwe. Uma isikhala sincane phakathi kwezisekelo, ubuso bamajoyinti kufanele bube bushelelezi. Bese, hlikihla iglue ngokulinganayo kusokhethi ngayinye bese uhlikihla iglue kabili ngaphandle kwesokhethi ngayinye. Ngemuva kwemizuzwana engama-40 yomile, beka. Beka iglue eceleni bese unaka ukuthi isikhathi sokomisa kufanele sandiswe noma sincishiswe ngokuhambisana nesimo sezulu.
3. Ipayipi kumele ligcwaliswe emuva emahoreni angama-24 ngemuva kokuxhumeka okomile, ipayipi kumele lifakwe emseleni, futhi ukumanzisa akuvunyelwe ngokuphelele. Uma ugcwalisa emuva, gcina amajoyinti, gcwalisa indawo ezungeze ipayipi ngesihlabathi, bese ugcwalisa emuva kakhulu.
4. Ukuze uxhume ipayipi le-PVC nepayipi lensimbi, hlanza indawo ehlangana kuyo ipayipi lensimbi elihlanganisiwe, ulifudumale ukuze uthambise ipayipi le-PVC (ngaphandle kokulishisa), bese ufaka ipayipi le-PVC epayipini lensimbi ukuze liphole. Umphumela uzoba ngcono uma kufakwa izihibe ezenziwe ngepayipi lensimbi.
Amapayipi e-PVCingaxhunyaniswa ngenye yezindlela ezine:
1. Uma ipayipi lilimele kakhulu, lonkeipayipikufanele kushintshwe. Isixhumi esinezimbobo ezimbili singasetshenziswa ukwenza lokhu.
2. Indlela yokuxazulula ingasetshenziswa ukuvimba ukuvuza kweglue ye-solvent. Kuleli qophelo, amanzi epayipi eliyinhloko ayakhishwa, okudala ingcindezi yepayipi engemihle ngaphambi kokuba iglue ifakwe emgodini endaweni yokuvuza. Iglue izodonswa ezimbotsheni ngenxa yengcindezi engemihle yepayipi, okuzomisa ukuvuza.
3. Inhloso enkulu yenqubo yokulungisa isibopho semikhono ukuvuza kwesikhwama ngokusebenzisa imifantu emincane kanye nemigodi. Ipayipi elifanayo le-caliber manje selikhethiwe ukusika isikhathi eside futhi lisukela ku-15 kuya ku-500 px ubude. Ubuso bangaphakathi besikhwama kanye nobuso bangaphandle bepayipi elilungisiwe kuxhunywe ezinhlanganisweni ngokuhambisana nenqubo esetshenzisiwe. Ngemva kokufaka iglue, ubuso buyaqina, bese buboshelwa ngokuqinile emthonjeni wokuvuza.
4. Ukuze udale isisombululo se-resin usebenzisa i-epoxy resin curing agent, sebenzisa indlela ye-glass fiber. Ilukwa ngokulinganayo ebusweni bepayipi noma endaweni evuzayo ngemva kokucwiliswa esixazululweni se-resin ngendwangu ye-glass fiber, futhi ngemva kokupholisa, iba yi-FRP.