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Kuteteza zachilengedwe magwiridwe antchito a latex ndi mawonekedwe

Izi ndi zomatira zosungunuka m'madzi, zomwe ndi zomatira za thermoplastic zokonzedwa ndi polymerization ya vinyl acetate monomer pansi pa zochita za woyambitsa.Nthawi zambiri amatchedwa white latex kapena PVAC emulsion mwachidule.Dzina lake lamankhwala ndi zomatira za polyvinyl acetate.Amapangidwa ndi acetic acid ndi ethylene kuti apange vinyl acetate ndi titanium dioxide wowonjezera (makalasi otsika amawonjezeredwa ndi calcium yowala, talc, ndi ufa wina).Kenako amapangidwa ndi polymerized ndi emulsion.Monga yamkaka woyera wandiweyani madzi.
Kuyanika kofulumira, kuyanika koyambira bwino, kugwiritsa ntchito bwino;adhesion wamphamvu, mkulu compressive mphamvu;kukana kutentha kwamphamvu.
ntchito
(1) White latex ili ndi maubwino angapo monga kuchiritsa kwanthawi zonse, kuchiritsa mwachangu, kulimba kwamphamvu kwambiri, ndipo chomangira chomangira chimakhala cholimba komanso cholimba ndipo sichovuta kukalamba.Itha kugwiritsidwa ntchito kwambiri polumikizira zinthu zamapepala (pazithunzi), ndipo itha kugwiritsidwanso ntchito ngati zomatira zomatira zotchingira madzi ndi matabwa.
(2) Imagwiritsa ntchito madzi ngati dispersant, ndi yotetezeka kugwiritsa ntchito, yopanda poizoni, yosayaka, yosavuta kuyeretsa, imalimbitsa kutentha kwa chipinda, imamatira bwino nkhuni, mapepala ndi nsalu, imakhala ndi mphamvu yolumikizana kwambiri, ndipo imachiritsidwa. zomatira wosanjikiza ndi colorless Transparent, zabwino toughness, saipitsa womangidwa chinthu.
(3) Itha kugwiritsidwanso ntchito ngati chosinthira phenolic resin, urea-formaldehyde resin ndi zomatira zina, komanso kupanga utoto wa polyvinyl acetate latex.
(4) Emulsion ili ndi kukhazikika bwino, ndipo nthawi yosungirako imatha kufika kupitirira theka la chaka.Chifukwa chake, imatha kugwiritsidwa ntchito kwambiri posindikiza ndi kumangiriza, kupanga mipando, ndikulumikiza mapepala, matabwa, nsalu, zikopa, zoumba, etc.

Mawonekedwe
1. Imakhala ndi zomatira zolimba kuzinthu za porous monga nkhuni, mapepala, thonje, zikopa, zoumba, ndi zina zotero, ndipo kukhuthala koyambirira kumakhala kokwera kwambiri.
2. Ikhoza kuchiritsidwa kutentha kwa chipinda, ndipo kuthamanga kwa machiritso kumakhala mofulumira.
3. Kanemayo ndi wowonekera, samaipitsa adherend, ndipo ndi yosavuta kukonza.
4. Kugwiritsa ntchito madzi ngati njira yowaziranitsira, sawotcha, alibe mpweya wapoizoni, saipitsa chilengedwe, ndi otetezeka komanso osawononga chilengedwe.
5. Ndi gawo limodzi la viscous madzi, lomwe ndi losavuta kugwiritsa ntchito.
6. Filimu yochiritsidwa imakhala ndi mlingo wina wa kulimba, kukana kusungunuka kwa alkali, kuchepetsa asidi, ndi kukana mafuta.
Amagwiritsidwa ntchito makamaka pokonza matabwa, kusonkhanitsa mipando, ndudu za ndudu, zokongoletsera zomangamanga, kugwirizanitsa nsalu, kukonza zinthu, kusindikiza ndi kumanga, kupanga zinthu zamanja, kukonza zikopa, kukonza zilembo, kumamatira matailosi, ndi zina zotero.
mphamvu
Zovala zoyera zoyera za latex ziyenera kukhala ndi mphamvu zokwanira zomangirira, kuti zitsimikizire kuti zinthu zamapepala sizidzakhudzidwa pambuyo polumikizana.
Kuweruza ngati mphamvu yomangira ya latex yoyera yogwirizana ndi chilengedwe ndi yoyenera, zidutswa ziwiri za zida zomata zitha kung'ambika motsatira mawonekedwe omangira.Ngati zida zomangika zimapezeka kuti zawonongeka pambuyo pong'ambika, mphamvu yomangirira ndi yokwanira;ngati kokha mawonekedwe omangirira alekanitsidwa, Zimasonyeza kuti mphamvu ya latex yoyera yogwirizana ndi chilengedwe ndi yosakwanira.Nthawi zina latex yoyera yokhala ndi chilengedwe yosakhala bwino imachotsedwa ndipo filimuyo imakhala yolimba ikasungidwa kwakanthawi kumalo otentha kapena otsika.Choncho, m'pofunika kuchita kutentha kutentha kutentha ndi otsika kutentha embrittlement kuyesa kudziwa ngati khalidwe lake ndi lodalirika.


Nthawi yotumiza: May-25-2021