Opanga zophimba anati zophimba zomwe zimasungunuka ndi madzi zimatchula zophimba zopangidwa kuchokera ku emulsions ngati zinthu zopangira filimu, momwe ma resin opangidwa ndi zosungunulira amasungunuka mu zosungunulira zachilengedwe, kenako, mothandizidwa ndi ma emulsifiers, ma resin amamwazidwa m'madzi ndi makina amphamvu osakaniza kuti apange ma emulsions, otchedwa post-emulsion, amatha kusungunuka ndi madzi panthawi yomanga.
Utoto wopangidwa powonjezera emulsion pang'ono ku utomoni wosungunuka m'madzi sungatchulidwe kuti utoto wa latex. Kunena zoona, utoto wochepetsa madzi sungatchulidwe kuti utoto wa latex, koma umagawidwanso ngati utoto wa latex malinga ndi mwambo.
Ubwino ndi kuipa kwa zophimba zochokera m'madzi
1. Kugwiritsa ntchito madzi ngati chosungunulira kumapulumutsa zinthu zambiri. Mavuto a moto panthawi yomanga amapewedwa ndipo kuipitsidwa kwa mpweya kumachepa. Kugwiritsidwa ntchito kochepa kokha kwa chosungunulira cha ether chopanda poizoni, chomwe chimapangitsa kuti malo ogwirira ntchito azikhala bwino.
2. Chosungunulira chachilengedwe cha utoto wamba wochokera m'madzi chili pakati pa 10% ndi 15%, koma utoto wa cathodic electrophoretic womwe ulipo pano wachepetsedwa kufika pa 1.2%, zomwe zimadziwika bwino kuti zimachepetsa kuipitsa chilengedwe komanso kusunga zinthu.
3. Kukhazikika kwa kufalikira kwa mphamvu yamphamvu ya makina kumakhala kochepa. Pamene liwiro la kuyenda mu payipi yotumizira limasiyana kwambiri, tinthu tomwe timafalikira timakanikizidwa kukhala tinthu tolimba, zomwe zimapangitsa kuti filimu yophimba iwonongeke. Pamafunika kuti payipi yotumizira ikhale yabwino ndipo khoma la payipi likhale lopanda zolakwika.
4. Ndi yowononga kwambiri zida zophikira. Zipinda zosagwira dzimbiri kapena zitsulo zosapanga dzimbiri zimafunika, ndipo mtengo wa zida ndi wokwera. Kudzimbiritsa ndi kusungunuka kwa chitsulo cha payipi yonyamulira kungayambitse mvula ndi kutayikira kwa tinthu tating'onoting'ono tomwe timabalalika pa filimu yophikira, kotero mapaipi achitsulo chosapanga dzimbiri amagwiritsidwanso ntchito.
Kumaliza kugwiritsa ntchito ndi njira yomangira ya opanga utoto
1. Sinthani utoto kuti ukhale wokhuthala bwino ndi madzi oyera, ndipo yesani kukhuthala bwino ndi Tu-4 viscometer. Kukhuthala koyenera nthawi zambiri kumakhala masekondi awiri mpaka 30. Wopanga utoto anati ngati palibe viscometer, mungagwiritse ntchito njira yowonera kuti musunthe utoto ndi ndodo yachitsulo, musunthe mpaka kutalika kwa masentimita 20 ndikuyimitsa kuti muwone.
2. Kuthamanga kwa mpweya kuyenera kulamulidwa pa 0.3-0.4 MPa ndi 3-4 kgf/cm2. Ngati kuthamanga kuli kotsika kwambiri, utoto sudzasungunuka bwino ndipo pamwamba pake padzakhala mabowo. Ngati kuthamanga kuli kwakukulu kwambiri, n'kosavuta kugwa, ndipo utoto wa utoto ndi waukulu kwambiri moti sungatayike zinthu ndikukhudza thanzi la ogwira ntchito yomanga.
3. Mtunda pakati pa nozzle ndi pamwamba pa chinthucho ndi 300-400 mm, ndipo n'zosavuta kugwa ngati chili pafupi kwambiri. Ngati chili kutali kwambiri, utsi wa utoto udzakhala wofanana ndipo padzakhala dzenje. Ndipo ngati nozzle ili kutali ndi pamwamba pa chinthucho, utsi wa utoto udzafalikira panjira, zomwe zimayambitsa zinyalala. Wopanga utoto anati mtunda weniweniwo ukhoza kudziwika malinga ndi mtundu wa utoto, kukhuthala kwake ndi kuthamanga kwa mpweya.
4. Mfuti yopopera imatha kusuntha mmwamba ndi pansi, kumanzere ndi kumanja, ndipo imatha kuyenda mofanana pa liwiro la 10-12 m/min. Iyenera kukhala yowongoka komanso yolunjika pamwamba pa chinthucho. Mukapopera mbali zonse ziwiri za pamwamba pa chinthucho, dzanja lomwe limakoka choyambitsa mfuti yopopera liyenera kutulutsidwa mwachangu. Lidzayatsidwa, izi zichepetsa chifunga cha utoto.
Nthawi yotumizira: Januwale-18-2024