I-Debunking 8 Common PVC Myths

I-PVC ingenye yezinto ezisetshenziswa kakhulu zamapayipi emhlabeni. Ithwala amanzi okuphuza, ikhipha amanzi angcolile, ichelela amapulazi futhi ihambisa amakhemikhali ezimbonini. Nokho izinganekwane mayelana ne-PVC zisazungeza, futhi zingaholela abathengi ezintweni ezingalungile noma umphakeli ongalungile. Lo mhlahlandlela uphikisa izinganekwane ezivamile eziyi-8 ze-PVC ngamaqiniso, izindinganiso nezeluleko ezisebenzayo, ngokombono womkhiqizi wamapayipi e-UPVC ne-CPVC, okokufaka namavalvu.

Izinganekwane ze-PVC vs. Amaqiniso: Isifinyezo Esisheshayo

Inganekwane 1: 'I-PVC Ayilungile Emvelweni'

Amaqiniso: Ubude besikhathi sokuphila, isisindo kanye nokusetshenziswa kabusha

I-PVC icishe ibe ngu-57% we-chlorine, ephuma kusawoti ovamile, kanye ne-ethylene engu-43%. Lokho kuyenza incike kancane kusitoko se-hydrocarbon kuneningi lamapulasitiki. Amapayipi anesisindo esincane, esinciphisa ukukhishwa kwezinto zokuhamba. Zihlala amashumi eminyaka, ngakho ukushintshwa akuvamile. I-PVC iphinde ibe yi-thermoplastic, ngakho-ke ama-scrap nama-offcuts angahlehliswa futhi asetshenziswe kabusha emikhiqizweni emisha.

Kuthiwani nge-Dioxin?

I-Dioxin ihlotshaniswa nokushiswa kwemfucuza okungalawuleki, njengemililo evulekile kanye nezishisi ezingasebenzi kahle. Ayikhishwa ipayipi le-PVC enkonzweni evamile. Ukulahlwa okunesibopho nokugaywa kabusha kususa ukukhathazeka.

Inganekwane yesi-2: 'Amapayipi e-PVC Avuza Amakhemikhali Anobuthi Emanzini Okuphuza'

I-UPVC eqinile iqhudelana ne-Flexible PVC

Ukukhathazeka okungeziwe kusebenza kakhulu ku-PVC eguquguqukayo, esebenzisa ama-plasticizers afana nama-phthalates ukuthamba. Ipayipi le-UPVC eliqinile nokufakwa akusebenzisi amapulasitiki.

Amazinga Okufanele Uwabheke

Amazinga amaningi kazwelonke nawesifunda alawula ipayipi elisetshenziselwa amanzi aphuzwayo, njenge-NSF/ANSI 61 eNyakatho Melika. Hlala ubuza umphakeli ukuthi yiziphi izimvume ezisebenza kumkhiqizo othile kanye nemakethe. Ukuthobelana kuncike kumkhiqizi, hhayi egameni lempahla.

Inganekwane yesi-3: 'Amapayipi e-PVC Awaqinile'

I-PVC imelana nokugqwala, ukugqwala nokukala. Amasistimu e-UPVC aklanywe kahle futhi afakwe ngokuvamile alinganiselwe ngezimpilo zesevisi zeminyaka engu-50 noma ngaphezulu. Ukuqina kuncike ekukhetheni isigaba sokucindezela esifanele. Ipayipi le-DIN likalwe yi-PN, njenge-PN10 noma i-PN16, kuyilapho ipayipi le-ASTM lisebenzisa amashejuli, njenge-SCH40 noma i-SCH80. Izindonga ezisindayo nezilinganiso eziphakeme zifanelana nezingcindezi eziphakeme. Ukwehluleka okuningi kwangaphambi kwesikhathi kuvela ngenxa yokucaciswa okungaphansi kosayizi, amajoyinti usimende we-solvent engalungile noma umonakalo womthelela, hhayi ezintweni.

Inganekwane yesi-4: 'I-PVC Yehla Ngokushesha Ekukhanyeni Kwelanga'

Ukuchayeka kwe-UV isikhathi eside kungashintsha umbala we-PVC engavikelekile futhi kunciphise kancane amandla ayo omthelela ongaphezulu. Lokho akusho ukuthi ipayipi liyahluleka. Ukuvikela okusebenzayo kulula: gqiba ipayipi, upende obala ogijimayo ngombala okhanyayo osekelwe emanzini, noma khetha ukwakheka okunezinzisi ze-UV. Sekela imigqa eveziwe kahle ukuze uphathe ukunwetshwa okushisayo. Amasistimu e-PVC angaphandle asebenze ngokuthembekile iminyaka uma efakwe nalezi zisekelo.

Inganekwane yesi-5: 'I-PVC Ayikwazi Ukuphatha Amanzi Ashisayo'

Ngokwengxenye Iqiniso: I-UPVC Inemikhawulo

Le nganekwane ilungile. I-UPVC evamile ihloselwe isevisi efinyelela cishe ku-60 °C, futhi isilinganiso sayo sokucindezela siyehla njengoba izinga lokushisa likhuphuka ngaphezu kwezinga lokushisa legumbi. Akufanele isetshenziselwe imigqa yamanzi ashisayo.

Isetshenziswa nini i-CPVC Kunalokho

I-CPVC inokuqukethwe okuphezulu kwe-chlorine, okuphakamisa ukumelana nokushisa kwayo. Ikalwa ngokujwayelekile kufika ku-93 °C. I-CPVC ikhiqizwa kumazinga afana ne-ASTM F441 ne-DIN. Njalo hlola ishadi lokwehlisa izinga lokushisa lomkhiqizi ngaphambi kokucacisa.

Inganekwane 6: 'PVC Ayikwazi Ukumelana Namakhemikhali'

I-PVC inokumelana okuhle kakhulu nama-acids amaningi, ama-alkali, usawoti kanye namanzi abolayo, yingakho kuvame kakhulu ekwelashweni kwamanzi, ukudosa ngamakhemikhali kanye nezitshalo zokucubungula. Inayo imingcele eyaziwayo: ingahlaselwa ama-ketone, ama-ester nama-hydrocarbon anephunga elimnandi, phakathi kwezinye izincibilikisi. Qondanisa ipayipi nezivalo zevalvu noketshezi oluthile nokugxilisa ingqondo. Ukuze uthole amazinga okushisa adinga kakhulu, i-HT-PVC, PPH ne-PVDF ezinye izindlela. Bheka ishadi lokumelana namakhemikhali kunokuba ucabange ukuthi into 'ifanele yonke indawo'.

Inganekwane yesi-7: 'I-PVC Ikhipha Intuthu Ebulalayo Emlilweni'

I-PVC eqinile ilukhuni ukuyibasa futhi ijwayele ukuzicisha uma umthombo welangabi usususiwe, ngenxa yokuqukethwe kwawo kwe-chlorine. Emlilweni, i-PVC ikhipha i-hydrogen chloride, into ecasulayo enephunga elibukhali. Kodwa ochwepheshe bezokuphepha emlilweni baphawula ukuthi i-carbon monoxide iyingozi enkulu emililo eminingi yezakhiwo, futhi izinto eziningi ezivamile zikhiqiza amagesi anobuthi lapho zishile. I-PVC ijwayele ukusabalalisa ilangabi kancane kancane kunezinye izindlela eziningi. Ukusebenza komlilo kuncike ohlelweni olugcwele kanye nohlelo lokusebenza, ngakho hlola amazinga omlilo afanelekile ephrojekthi yakho.

Inganekwane yesi-8: 'Wonke amapayipi we-PVC nokufakwayo kuyefana'

Yini Ehlukanisa Ikhwalithi Emkhiqizweni Obiza Kaphansi

Amapayipi amabili angase abukeke afana futhi asasebenza ngendlela ehluke kakhulu. Umehluko uhlanganisa ikhwalithi ye-resin, iphakheji yokuqiniswa, ukubekezelela ukushuba kodonga, ukunemba kobukhulu kanye nenqwaba yokuvumelana kwenqwaba. Ipayipi elishibhile lingase lisebenzise isigcwalisi esiningi ngokweqile noma izinsalela ezigaywe kabusha, ezinganciphisa ukumelana nengcindezi namandla omthelela.

I-DIN iqhudelana ne-ASTM iqhudelana ne-JIS

Izimakethe ezihlukene zisebenzisa amasistimu ahlukene, futhi ubukhulu abushintsheki:

• I-DIN: osayizi bemethrikhi abanezilinganiso zokucindezela kwe-PN (PN10, PN16)

• I-ASTM: ukulinganisa okusekelwe ngamasentimitha ngamashejuli (SCH40, SCH80), njengepayipi le-ASTM D1785

• I-JIS: Izinga laseJapane, njenge-JIS VP

Ukuxuba amazinga ohlelweni olulodwa kungabangela ukuvuza namajoyinti ampofu. Cacisa indinganiso ngokucacile kulo lonke uhlelo.

Imibuzo Evame Ukubuzwa Mayelana ne-PVC

Ingabe ipayipi le-PVC liphephile emanzini okuphuza?

Yebo, uma iyipayipi le-UPVC eliqinile elihlangabezana nezinga elifanele lamanzi aphuzwayo emakethe yakho. Hlala ucela isitifiketi.

Uyini umehluko phakathi kwe-UPVC ne-CPVC?

I-UPVC iyi-PVC engafakwanga ipulasitiki emanzini abandayo kanye nokusetshenziswa okuvamile. I-CPVC iyi-PVC ene-chlorinated enezinga lokushisa eliphezulu, elifanele amanzi ashisayo noketshezi lwenqubo eshisayo.

Ingabe ipayipi le-PVC lingagaywa kabusha?

Yebo. I-PVC iyi-thermoplastic futhi ingaphinda isetshenziswe ngomshini ibe yimikhiqizo emisha.

Ingakanani izinga lokushisa eliphezulu lepayipi le-PVC?

I-UPVC evamile ivamise ukukhawulelwa cishe ku-60 °C, futhi ingcindezi iyancipha ngaphezu kwezinga lokushisa legumbi. I-CPVC ifinyelela cishe ku-93 °C. Njalo qinisekisa ngedatha yomkhiqizi.

Isiphetho: Ukwehlukanisa amaqiniso e-PVC kokuthi Fiction

Iningi lezinganekwane ze-PVC livela olwazini oluphelelwe isikhathi, emikhiqizweni engenziwanga kahle, noma kusuka ku-PVC edidayo eqinile futhi eguquguqukayo. Amaqiniso abonisa ukuthi i-PVC iqinile, iyasebenziseka kabusha, imelana namakhemikhali futhi iyonga uma ukhetha ibanga elilungile, elijwayelekile kanye nomhlinzeki. Uma ucacisa amapayipi ephrojekthi entsha, xhumana no-Huasheng ukuze uthole ikhotheshini noma isampula yamahhala.