nkhani

Chitoliro cha PVC (PVC-U chitoliro) chitoliro cholimba cha PVC, chimapangidwa ndi utomoni wa PVC wokhala ndi stabilizer, lubricant ndi zina zotentha kwambiri zopangira ma extrusion, ndiye chitoliro choyambirira chopangidwa ndikugwiritsa ntchito pulasitiki.Chitoliro cha PVC-U chili ndi kukana kwamphamvu kwa dzimbiri, kulumikizana kosavuta, mtengo wotsika komanso mawonekedwe olimba.Komabe, chifukwa cha kutayikira kwa PVC-U monomer ndi zowonjezera, ndizoyenera kokha pamakina operekera madzi pomwe kutentha kotumizira sikudutsa 45 ℃.Mapaipi apulasitiki amagwiritsidwa ntchito ngati ngalande, madzi oyipa, mankhwala, kutentha ndi madzi ozizira, chakudya, zamadzimadzi zoyera kwambiri, matope, gasi, mpweya woponderezedwa ndi vacuum system.

Ili ndi mphamvu yabwino komanso yopondereza: koma kusinthasintha kwake sikuli bwino ngati mapaipi ena apulasitiki.

Kukana kwamadzimadzi otsika: khoma la chitoliro cha PVC-U ndi losalala kwambiri, ndipo kukana kwamadzimadzi ndikochepa kwambiri.Coefficient yake ya roughness ndi 0.009 yokha, ndipo mphamvu yake yoyendera madzi ndi 20% kuposa ya chitoliro chachitsulo chofanana, ndi 40% kuposa chitoliro cha konkire.

Kukana bwino kwa dzimbiri komanso kukana mankhwala: chitoliro cha PVC-U chili ndi kukana kwa asidi, kukana kwa alkali ndi kukana kwa dzimbiri.Sichimakhudzidwa ndi chinyezi ndi nthaka pH, ndipo sichifunikira chithandizo cha anti-corrosion pamene chitoliro chaikidwa.

Ndi kuthina bwino kwamadzi: kuyika kwa chitoliro cha PVC-U kumakhala ndi kutsekeka kwamadzi kwabwino, kaya kumalumikizidwa ndi zomatira kapena mphete ya mphira.

Umboni wa kuluma: Machubu a PVC-U sakhala gwero lazakudya chifukwa chake sagwidwa ndi makoswe.Malinga ndi kafukufuku wopangidwa ndi National Health Foundation ku Michigan, makoswe samaluma chitoliro cha PVC-U.

Kuyesa kwa magwiridwe antchito: nthawi yochiritsa, kuchuluka kwa kuchepa, mphamvu yogawanitsa, mphamvu yochotsa katundu, kukhazikika kwamafuta, nthawi yoyenera, nthawi yosungira, kutulutsa zinthu zovulaza.

Njira yopanga

Zopangira + zokonzekera zothandizira → kusakaniza → kunyamula ndi kudyetsa → kudyetsa mokakamiza → chopopera chamtundu wa cone → nkhungu yotulutsira → manja opangira → bokosi lopaka vacuum → thanki yowumira madzi ozizira → makina osindikizira a inki → trakitala yokwawa → makina onyamula mpeni → chitoliro choyikapo → kuyezetsa komaliza ndi kuyika.

PVC ikhoza kugawidwa mu PVC yofewa ndi PVC yolimba.

PVC yolimba imakhala pafupifupi 2/3 yamsika, ndipo akaunti yofewa ya PVC imakhala 1/3.

PVC yofewa nthawi zambiri imagwiritsidwa ntchito pansi, padenga ndi pachikopa, koma chifukwa PVC yofewa imakhala ndi plasticizer (ichinso ndi kusiyana pakati pa PVC yofewa ndi PVC yolimba), mawonekedwe a thupi ndi osauka (monga mipope yamadzi imayenera kupirira kuthamanga kwa madzi, PVC yofewa siyoyenera kugwiritsidwa ntchito), chifukwa chake kuchuluka kwake kumachepa.

PVC yolimba ilibe plasticizer, kotero ndiyosavuta kupanga, katundu wabwino wakuthupi, kotero imakhala ndi chitukuko chachikulu ndi ntchito.Popanga zida za PVC, zowonjezera zingapo ziyenera kuwonjezeredwa, monga stabilizer, plasticizer ndi zina zotero.Ngati zowonjezera zonse zoteteza chilengedwe zikugwiritsidwa ntchito, chitoliro cha PVC chimakhalanso chosavulaza komanso chosavulaza zachilengedwe.