Makhalidwe akuluakulu ndi magulu ogwiritsira ntchito owongolera thovu:

1, PVC thovu yowongolera
Makhalidwe ogwira ntchito
Pogwiritsa ntchito kapangidwe ka molekyulu kolemera kwambiri (monga ma acrylic esters) kuti muwonjezere mphamvu ya kusungunuka kwa PVC, kuletsa kuphatikizana kwa thovu, ndikupanga kapangidwe ka uchi wofanana (m'mimba mwake wa selo ndi 0.1-0.5mm).
Limbikitsani kupangidwa kwa PVC kukhala pulasitiki, kusinthasintha kayendedwe ka madzi ndi kuchuluka kwa thovu, komanso kukonza kunyezimira kwa pamwamba pa chinthucho.
Mitundu yodziwika bwino ikuphatikizapo HF-100, ZB-530, P533J, ndi zina zotero. Mitundu ina imatha kusinthidwa kuti igwirizane ndi kutentha komwe kumawola komanso kuchuluka kwa mpweya womwe umapanga.
Zochitika zogwiritsira ntchito
Zinthu zolimba za thovu la PVC monga ma board omangira, ma board otsatsa malonda, ndi mapaipi, okhala ndi mlingo woyerekeza wa 4-8.
Kutulutsa thovu pansi pa chidendene kumafuna kusintha kufanana kwa mabowo a thovu, ndipo zinthu zina zimapangidwa makamaka kuti zigwiritsidwe ntchito popanga thovu lamphamvu kwambiri.
2, Polyurethane thovu yowongolera
Makhalidwe ogwira ntchito
Monga chothandizira thovu kapena chokhazikika, chimawongolera kapangidwe ka maselo otseguka/otsekedwa a thovu lofewa la PU kuti liwongolere kulimba mtima ndi kufanana kwa kachulukidwe.
Zochitika zogwiritsira ntchito
Kupanga thovu lolimba kwambiri, guluu wa thovu ndi zipangizo za nsapato kuyenera kugwiritsidwa ntchito pamodzi ndi chopangira thovu.
3, Kuyerekeza kwaukadaulo
Mosiyana ndi zinthu zoyambitsa nyukiliya: zinthu zowongolera thovu zimayang'ana kwambiri pa kulamulira kwa rheological yosungunuka, pomwe zinthu zoyambitsa nyukiliya (monga nano calcium carbonate) zimawongolera mwachindunji kupanga ma pores a thovu.
Mphamvu yogwirizana: Ikagwiritsidwa ntchito limodzi ndi hydrotalcite, imatha kulimbitsa kukhazikika kwa kutentha ndikuchepetsa zolakwika pamwamba.