White latex ndi mtundu wa zomatira, zomwenso ndi njira yolumikizira zinthu ndi zinthu kukhala chimodzi.Ndilo gulu lofunika kwambiri la mankhwala abwino, ndipo phindu lake la chikhalidwe ndi zachuma ndi lalikulu kwambiri.
Chinthu chofunika kwambiri cha latex yoyera ndi vinyl acetate, yomwe ndi yofunika kwambiri pakupanga latex yoyera.Iyenera kugwiritsidwa ntchito popanga latex yoyera ndi kampani iliyonse yokhazikika, kotero dzina lake lenileni ndi polyvinyl acetate emulsion.Polyvinyl acetate emulsion inatuluka mu 1929 ndipo kupanga mafakitale kunayamba mu 1939. Chifukwa chakuti ndi zomatira zamadzi, sizowonongeka, siziwotcha, ndipo zimagwira ntchito bwino kuposa guluu wa nyama.Pambuyo pa 1945, idalowa m'malo mwa guluu wanyama.Chifukwa njira yopangira latex yoyera ndi chinthu chamkaka choyera chomwe chimapangidwa ndi polymer pa kutentha kwambiri, anthu ena amachitcha kuti latex yoyera, latex ndi mayina ena.
Pakalipano, mumsika waukulu wokongoletsera, kugwiritsa ntchito latex yoyera yosaipitsa komanso yowonongeka ndi chilengedwe kukukhala kofunika kwambiri, komanso kumakondedwa kwambiri ndi anthu.Koma pakati pa mitundu yambiri ya latex yoyera, ogula ayenera kusiyanitsa bwanji pakati pa zabwino ndi zoipa zoyera za latex?
Choyamba, tiyenera kufunsa kuti zolimba zake ndi zotani?Migolo ina imakhala ndi zolimba zolembedwapo.Ngati sichoncho, mutha kufunsa kalozera wogula mwachindunji.Nthawi zambiri, latex yoyera yogwiritsidwa ntchito kunyumba imakhala yolimba pafupifupi 30% -35%.Ngati ndi 20% -25%, imatha kuikidwa pamitengo yodziwika bwino.Zomwe zimakhala zolimba kwambiri, chinyezi chochepa chimakhala mu latex yoyera ndipo chimamatirira kwambiri.
Kachiwiri, ngati sitolo yapaderayi ndi yabwino, mutha kutsegula chidebe chaching'ono choyesera ndikununkhiza latex yoyera.Mbalame yoyera yabwino iyenera kukhala ndi fungo lomveka bwino, osati lowawasa kapena fungo lina losasangalatsa.latex yoyera yabwino ilibe formaldehyde, choncho ndi yotetezeka komanso yopanda poizoni.
Chachitatu, latex yoyera yomwe mumagulanso idzauma mwamsanga mukamagwiritsa ntchito.Nthawi zambiri, latex yoyera imawuma kwathunthu pambuyo pa maola 24 akukanikiza mosabisa.Ngati sichiwuma, zikutanthauza kuti mtundu wa latex woyera si wabwino, kapena malo omangira ndi chinyezi kwambiri.
Pomaliza, yang'anani mtundu wa latex yoyera mutatha kuyanika.Latex yoyera yabwino imawonekera mukaumitsa, ndipo zowoneka bwino zimakhala bwino.Ndipo mutatha kuyanika latex yoyera, zinthu ziwiri zomata sizili zophweka kuzichotsa mopanda kanthu, kusonyeza kuti mphamvu yake yomatira ndi yamphamvu kwambiri.
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Nthawi yotumiza: Jul-07-2023