Wowuma ether makamaka ntchito zomangamanga matope, amene angakhudze kusasinthasintha matope zochokera gypsum, simenti ndi laimu, ndi kusintha kumanga ndi sag kukana matope.Ma ethers owuma nthawi zambiri amagwiritsidwa ntchito limodzi ndi ma cellulose ether omwe sanasinthidwe komanso osinthidwa.Ndizoyenera kuzinthu zonse zopanda ndale komanso zamchere, ndipo zimagwirizana ndi zowonjezera zambiri muzinthu za gypsum ndi simenti (monga ma surfactants, MC, starch ndi polyvinyl acetate ndi ma polima ena osungunuka m'madzi).
Makhalidwe a wowuma ether makamaka motere:
(1) Sinthani kukana kwa sag;
(2) Kuwongolera zomanga;
(3) Zokolola zambiri zamatope.
Kodi ntchito yayikulu ya starch ether mu matope owuma opangidwa ndi gypsum ndi chiyani?
Yankho: Wowuma ether ndi chimodzi mwazowonjezera zazikulu za ufa wouma matope.Ikhoza kukhala yogwirizana ndi zina zowonjezera.Amagwiritsidwa ntchito kwambiri pomatira matailosi, kukonza matope, pulasitala gypsum, mkati ndi kunja kwa khoma putty, gypsum-based caulking and filling materials, interface agents, masonry Mu matope, ndi oyeneranso ntchito pamanja kapena kupopera ndi simenti-based kapena gypsum. - matope opangidwa.Zimagwira ntchito motere:
(1) Wowuma ether nthawi zambiri amagwiritsidwa ntchito limodzi ndi methyl cellulose ether, zomwe zikuwonetsa kuyanjana kwabwino pakati pa awiriwa.Kuonjezera mlingo woyenerera wa starch ether ku methyl cellulose ether kungathandize kwambiri kuti sag resistance ndi kutsetsereka kwa matope, ndi zokolola zambiri.
(2) Kuonjezera mlingo woyenerera wa starch ether ku matope omwe ali ndi methyl cellulose ether kungapangitse kwambiri kusasinthasintha kwa matope, kumapangitsa kuti madzi azisungunuka, ndikupangitsa kuti zomangamanga zikhale zosalala komanso zosalala.
(3) Kuonjezera mlingo woyenerera wa starch ether ku matope omwe ali ndi methyl cellulose ether kungapangitse kusungirako madzi mumatope ndikutalikitsa nthawi yotseguka.
Kodi maubwino ogwiritsira ntchito ndi njira zotani zosungirako wowuma ether?
Yankho: Itha kugwiritsidwa ntchito ngati chophatikizira pazinthu zopangira simenti, zopangidwa ndi gypsum ndi zinthu za phulusa la calcium.
(1) Ubwino ndi kugwiritsa ntchito:
a.Imakhala ndi mphamvu yokulirapo pamatope, imatha kukhuthala mwachangu, komanso imakhala ndi mafuta abwino;
b.Mlingo ndi wochepa, ndipo mlingo wochepa kwambiri ukhoza kukwaniritsa zotsatira zazikulu;
c.Kupititsa patsogolo luso la anti-slide la matope omangika;
d.onjezerani nthawi yotseguka ya zinthu;
e.Sinthani magwiridwe antchito azinthu ndikupangitsa kuti ntchitoyo ikhale yosavuta.
(2) Kusungirako:
Mankhwalawa amatha kutengeka ndi chinyezi ndipo amayenera kusungidwa pamalo owuma komanso ozizira muzotengera zoyambirira.Ndi bwino kugwiritsa ntchito mkati mwa miyezi 12.(Ndikoyenera kugwiritsidwa ntchito limodzi ndi high-viscosity cellulose ether, ndipo chiŵerengero cha cellulose ether ndi starch ether ndi 7:3~8:2)
Kodi ntchito ya methyl cellulose ether mumatope owuma ndi otani?
A: Methyl hydroxyethyl cellulose ether (MHEC) ndi methyl hydroxypropyl cellulose ether (HPMC) pamodzi amatchedwa methyl cellulose ether.
M'munda wa ufa wowuma matope, methyl cellulose ether ndi yofunika kusinthidwa zinthu zouma ufa matope monga pulasitala matope, pulasitala gypsum, matailosi zomatira, putty, self-leveling zinthu, utsi matope, zomatira wallpaper ndi caulking zakuthupi.M'matope osiyanasiyana owuma a ufa, methyl cellulose ether makamaka imagwira ntchito yosunga madzi ndikukhuthala.
Kodi kupanga cellulose ether ndi chiyani?
Yankho: Choyamba, cellulose zopangira zimaphwanyidwa, kenako alkali ndi pulped pansi pa caustic soda.Onjezani olefin oxide (monga ethylene oxide kapena propylene oxide) ndi methyl chloride ya etherification.Pomaliza, kutsuka ndi kuyeretsa madzi kumachitika kuti pomaliza apeze ufa woyera.Ufa uwu, makamaka yankho lamadzimadzi, uli ndi zinthu zosangalatsa zakuthupi.Ether ya cellulose yomwe imagwiritsidwa ntchito pomanga ndi methyl hydroxyethyl cellulose ether kapena methyl hydroxypropyl cellulose (yofupikitsidwa ngati MHEC kapena MHPC, kapena dzina losavuta MC).Mankhwalawa amagwira ntchito yofunika kwambiri m'munda wamatope a ufa wouma.udindo wofunikira.
Nthawi yotumiza: Jan-30-2023