PVC SG-5 kwa chitoliro,
PVC kupanga mapaipi, PVC SG-5 utomoni,

Sg-5 resin yokhala ndi digiri yotsika ya polymerization iyenera kusankhidwa mukupanga machubu olimba.The apamwamba digiri ya polymerization, thupi ndi makina katundu ndi kutentha kukana
Zomwe zimakhala zabwinoko, koma kusayenda bwino kwa utomoni kumabweretsa zovuta zina pakukonza, kotero kukhuthala kwake kumakhala (1).7 ~ 1. 8) x 10-3 pa
• SG-5 resin ya S ndi yoyenera.Chitoliro cholimba nthawi zambiri chimagwiritsa ntchito lead stabilizer, kukhazikika kwake kwamafuta, komwe kumagwiritsidwa ntchito katatu koyambira, koma
Nthawi zambiri amagwiritsidwa ntchito ndi sopo wa lead ndi barium wokhala ndi mafuta abwino.Kusankha ndi kugwiritsa ntchito mafuta odzola ndikofunikira kwambiri pakukonza mapaipi olimba.
Mafuta onse amkati ndi mafuta akunja ayenera kuganiziridwa kuti achepetse mphamvu ya intermolecular, kotero kuti kusungunula kukhuthala kungathe kuchepetsedwa kupanga, komanso kupewa kusungunuka.
Gwiritsani ntchito zitsulo zotentha kuti mupereke malo owala.Sopo wachitsulo nthawi zambiri amagwiritsidwa ntchito popaka mafuta mkati, ndipo sera yokhala ndi malo otsika osungunuka imagwiritsidwa ntchito ngati mafuta akunja.Filler master
Kugwiritsa ntchito kashiamu carbonate ndi barium (barite ufa), calcium carbonate imapangitsa kuti chitoliro chiwoneke bwino, barium imatha kusintha mawonekedwe ake, kuti chitolirocho chikhale chosavuta kuumba, awiri.
Mtengowo ukhoza kuchepetsedwa, koma zochulukira zitha kukhudza magwiridwe antchito a chitoliro, chitoliro cha chitoliro ndi chitoliro cholimbana ndi dzimbiri sichingawonjezere kapena kuwonjezera chowonjezera chochepa.

Kodi mapaipi a PVC ndi CPVC ndi chiyani?

Zithunzi za PVC

Opangidwa m'zaka za m'ma 1930, mapaipi a PVC (polyvinyl chloride) akhala muyeso wa mapaipi am'matauni ndi mafakitale padziko lonse lapansi.Ku US, magawo atatu mwa anayi a nyumba zonse amagwiritsa ntchito PVC.Kuyambira m'ma 1950, wakhala m'malo wamba mipope zitsulo

PVC amapangidwa pogwiritsa ntchito imodzi mwa njira zitatu za polymerization: kuyimitsidwa polymerization, emulsion polymerization, kapena polymerization yochuluka.Zambiri za PVC zimapangidwa pogwiritsa ntchito kuyimitsidwa kwa polymerization.

Ndikofunikira kudziwa kuti mapaipi a PVC amabwera m'njira ziwiri: okhazikika komanso osapangidwa.Maonekedwe olimbawo mwina ndiwo oyamba kubwera m’maganizo—ganizirani za madzi akumwa, mapaipi amadzi, zimbudzi, ndi ulimi.Fomu yopanda pulasitiki ndi yosinthika, yomwe ndi yabwino kuti igwiritsidwe ntchito ngati machubu azachipatala ndi kutchinjiriza kwa mawaya amagetsi.

Ubwino wina wa PVC chitoliro monga mphamvu zake, kulimba mkulu, mtengo wotsika, unsembe zosavuta, ndi kukana dzimbiri ndi dzimbiri.

Zithunzi za CPVC

CPVC kwenikweni ndi PVC yomwe yapangidwa ndi klorini.Njira ya chlorination imalola CPVC kupirira kutentha kwapamwamba-mpaka 200 ° F-ndipo imathandiza kuti moto usavutike ndi dzimbiri.Chifukwa cha kukana kwake kutentha kwambiri, ma code ambiri omangira amafuna mapaipi a CPVC pakugwiritsa ntchito madzi otentha, ngakhale atha kugwiritsidwa ntchito pamadzi otentha komanso ozizira.Kuphatikiza apo, CPVC imaphatikizidwa kwambiri pakugwiritsa ntchito makina opopera moto.

Mndandanda wa zabwino za CPVC zikuwonjezera.Chifukwa chimodzi, kukana kwake kwamankhwala ndi kutentha kumapangitsa kuti ikhale yolimba kwambiri ndikuonetsetsa kuti moyo utalikirapo.

Chifukwa chotha kupirira kutentha kwakukulu komanso ntchito zambiri zamalonda ndi mafakitale, CPVC imabwera pamtengo wapamwamba kuposa PVC.

Kodi pali kusiyana kotani pakati pa mapaipi a PVC ndi CPVC?

Kusiyana kwakukulu pakati pa PVC ndi CPVC ndikutha kupirira kutentha.Monga tanena kale, chitoliro cha CPVC chimatha kupirira mpaka 200 ° F, pomwe chitoliro cha PVC chimatha kupirira mpaka 140 ° F.Ngati mupita pamwamba pa kutentha kumeneku, zonsezi zimayamba kufewa, zomwe zingapangitse kuti mafupa afooke komanso mapaipi alephereke.Chotsatira chake, ma plumbers ambiri amalangiza kuti mugwiritse ntchito CPVC pa mizere ya madzi otentha ndi PVC pa mizere ya madzi ozizira.

Ngakhale kuti PVC ili ndi ubwino wambiri, CPVC imakhala ndi kusinthasintha kwakukulu, ndipo imapezeka mu kukula kwa chitoliro (NPS) ndi kukula kwa chubu chamkuwa (CTS).Mosiyana ndi izi, PVC imangopezeka mu dongosolo la NPS.Mapaipi onsewa amapezeka mu 10 ft ndi 20 ft kutalika.

Ponena za maonekedwe, mapaipi a PVC ndi oyera kapena otuwa mumtundu, ndipo mapaipi a CPVC nthawi zambiri amakhala oyera, otuwa, kapena achikasu.Ngati pali funso lililonse, onse awiri adzakhala ndi luso lawo losindikizidwa pambali.Popeza kuti mankhwala amasiyanasiyana pakati pa ziwirizi, simenti zosungunulira ndi zomangira zomangira siziyenera kugwiritsidwa ntchito mosiyana.

Kodi pali kufanana kotani pakati pa mapaipi a PVC ndi CPVC?

Zikafika pakufanana kwaukadaulo ndi thupi, PVC ndi CPVC zili ndi mndandanda wopatsa chidwi.Chifukwa chimodzi, katundu wa mapaipi onsewa amawalola kukana dzimbiri ndi kuwonongeka kwa mankhwala.Kachiwiri, onse ndi otetezeka kugwiritsa ntchito ndi madzi amchere pamene ANSI / NSF 61 yatsimikiziridwa.Onse amabwera mu Ndandanda 40 ndi makulidwe a Pulogalamu 80, ndipo akupezeka kumapeto komanso kumapeto kwa belu.Kuphatikiza apo, Schedule 40 PVS imabwera muzowonjezera za Class 125.

Monga bonasi yowonjezerera pakuyika kwawo kosavuta, zonsezi ndizosagwira ntchito komanso zolimba, zomwe zimalola moyo wazaka makumi asanu mpaka makumi asanu ndi awiri.Ndipo mosiyana ndi mkuwa, mtengo wa mapaipi onse a PVC ndi CPVC sudalira mtengo wamsika.

PVC utomoni akhoza kukonzedwa mu zinthu zosiyanasiyana pulasitiki.Ikhoza kugawidwa muzinthu zofewa komanso zolimba malinga ndi ntchito yake.Amagwiritsidwa ntchito makamaka popanga mapepala owonekera, zopangira mapaipi, makhadi agolide, zida zothira magazi, machubu ofewa ndi olimba, mbale, zitseko ndi mazenera.Mbiri, mafilimu, zipangizo zotetezera magetsi, ma jekete a chingwe, kuikidwa magazi, ndi zina zotero.

Kufuna kwa PVC kumayendetsedwa ndi zinthu za Construction, Agriculture, Packaging and Consumer Sectors.Mu msika wapakhomo PVC utomoni ntchito kupanga okhwima ndi zofewa PVC anamaliza katundu.Pafupifupi 55% ya gawo la msika limakhala ndi gawo la PVC Pipes & Fittings lokha, magawo ena akuphatikizapo Filimu & Sheet, Cable Compound, Flexible hose, Shoes, Profile, Flooring and Foam Board.Pamsika wapakhomo wa PVC, utomoni umagwiritsidwa ntchito kwambiri popanga mapaipi a PVC.Pafupifupi 55% ya omwe amamwa utomoni ali m'gawoli lokha.Magawo ena akuphatikizapo zikopa zopangira, nsapato, zolimba ndi zofewa, mapepala a m'munda, mawindo ndi zitseko ndi zina. Kugulitsa kwa PVC m'nyumba kwakhala kukuchulukirachulukira pa mlingo wa 5% pachaka.