m malo enieni amsika, mitundu yosiyanasiyana ya ufa wa latex imatha kufotokozedwa ngati yowoneka bwino. Chotsatira chake, ngati wogwiritsa ntchito alibe akatswiri ake amisiri kapena zida zoyesera, akhoza kungopusitsidwa ndi amalonda ambiri osakhulupirika pamsika. Pakalipano, pali njira zina zomwe zimatchedwa njira zodziwira zomwe zimayendayenda pa intaneti, monga: kuyang'ana chisokonezo cha yankho losungunuka ndi dziko lopanga mafilimu. Njirazi ndi kuzindikira kokha kuchokera pamwamba, ndipo sangathe kupereka sayansi methodological thandizo kwa wosuta kutsimikiza komaliza ngati mankhwala ndi oyenera iye. Choncho, m'nkhani ino, ife mwadongosolo kutchuka mfundo zina zofunika za ufa mphira kwaulere ku mbali ya zofunika kwambiri zopangira zikuchokera, makhalidwe, ndi cholinga cha ntchito mphira ufa, kuti anzake akhoza kuweruza okha chimene chiri chabwino ndi chabwino. chosalongosoka.
Choyamba, lingaliro lofunikira kumvetsetsa momwe ufa weniweni wa polima umapangidwira. (Redispersible latex ufa ndi polima ufa ndi katundu redispersible kuti kusinthidwa kuchokera kupanga utomoni emulsion powonjezera zinthu zina ndi utsi-zouma. Pamene madzi ntchito monga kubalalitsidwa sing'anga, akhoza kupanga emulsion ndipo ali redispersible polima ufa. Redispersible The latex ufa nthawi zambiri woyera ufa, koma owerengeka redisin ufa, koma ochepa redisin ufa, ndi mitundu yochepa redisin: zowonjezera, zoteteza colloid, anti-caking wothandizira. 1. Utomoni wa polima uli pakatikati pa tinthu tating'ono ta latex ufa, komanso ndi gawo lalikulu la ufa wa latex wopangidwanso, monga polyvinyl acetate / vinyl resin, etc. Ubwino wa emulsion wa polyvinyl acetate wopangidwa ndi opanga osiyanasiyana ndi njira zosiyanasiyana zidzakhudza mwachindunji ubwino wa ufa wa rabara wopangidwa. Pofuna kuwonetsetsa kukhazikika kwazinthu, mafakitale akulu abwinobwino nthawi zambiri amagwiritsa ntchito mtundu wa polyvinyl acetate kupanga ufa wopangidwanso wa polima. Pano tingatengere chitsanzo chothandiza. Mu 2015, odziwika bwino zoweta mtundu wa ufa mphira zoweta m'malo wotchipa polyvinyl acetate emulsion kupanga redispersible polima ufa chifukwa cha zifukwa kasamalidwe. Zotsatira zake, kusinthasintha kwakukulu kwabwino kudachitika. zinapangitsa kuwonongeka kosatheka. Ngakhale amalonda ena opanda khalidwe kuno adzagwiritsa ntchito latex yoyera ndi zina zotero m'malo mopukuta fumbi.
2. Zowonjezera (zamkati) zimagwira ntchito limodzi ndi utomoni kuti zisinthe utomoni, mwachitsanzo, pulasitiki yomwe imachepetsa kutentha kwa filimu ya resin (kawirikawiri vinyl acetate / ethylene copolymer resins safunikira kuwonjezera mapulasitiki), osati latex Powder ili ndi zowonjezera. The redispersible latex ufa wa opanga ambiri ang'onoang'ono amangokhala ndi filimu yopangira kutentha kwa kutentha ndipo sangathe kutchedwa kutentha kwa magalasi, omwenso ndi gawo lofunikira la khalidwe la ufa wa rabara wokha.
3. Chitetezo cha colloid Chosanjikiza cha zinthu za hydrophilic zokutidwa pamwamba pa tinthu tating'onoting'ono ta latex, ndipo thupi loteteza la ufa wambiri wa latex ndi polyvinyl mowa. Mowa wa polyvinyl pano ndikutenga nawo gawo pakuwumitsa kutsitsi pamodzi, osati kungosakaniza. Nali vuto lina lofala pamsika. Maphunziro ang'onoang'ono ang'onoang'ono omwe amati akupanga ufa wa rabara amangopanga njira yosakanikirana. ndondomeko, mankhwala sangathe mosamalitsa kutchedwa dispersible polima ufa.
4. Zowonjezera (zakunja) Zipangizo zomwe zimawonjezeredwa kuti ziwonjezere magwiridwe antchito a ufa wa latex, monga kuwonjezera ma superplasticizers ku ufa wina wa latex. Monga zowonjezera zamkati, simtundu uliwonse wa ufa wa polima womwe umagwiritsidwa ntchito. Ma ufa a latex onse ali ndi chowonjezera ichi.
5. Anti-caking agent Fine mineral filler, yomwe imagwiritsidwa ntchito makamaka kuteteza ufa wa latex kuti usasokonekera panthawi yosungira ndi kunyamula komanso kuwongolera kutuluka kwa ufa wa latex (wotayidwa m'matumba a mapepala kapena akasinja). Chodzaza ichi ndi gawo lomwe lingakhudze kwambiri mtengo weniweni wopangira komanso mphamvu ya ufa wa polima wosabalalika. Mafuta ambiri a rabara otsika mtengo pamsika amachulukitsa kuchuluka kwa zodzaza kuti achepetse ndalama. Mwachidule, ndi chizindikiro cha phulusa lomwe nthawi zambiri limatchulidwa. Zodzaza zosiyanasiyana zowonjezeredwa ndi opanga osiyanasiyana zidzakhudzanso kusakanikirana kwa ufa wa rabara ndi simenti. Chifukwa kugwirizana kwa zomatira muzinthu zakuthupi kumatheka kudzera mu mfundo ya makina ophatikizira
Nthawi yotumiza: Apr-26-2024