Wowuma wa etherified ndi wowuma wolowa m'malo mwa ether wopangidwa ndi momwe magulu a hydroxyl mu ma molekyulu owuma okhala ndi zinthu zotakataka, kuphatikiza hydroxyalkyl starch, carboxymethyl starch, ndi cationic wowuma. Popeza etherification wa wowuma bwino kukhazikika mamasukidwe akayendedwe ndi chomangira etere si mosavuta hydrolyzed pansi zinthu amphamvu zamchere, wowuma etherified ntchito m'minda ambiri mafakitale. Carboxymethyl starch (CMS) ndi mtundu wachilengedwe wa zinthu zachilengedwe za anionic komanso polymer polyelectrolyte ether yosungunuka m'madzi ozizira. Pakalipano, cMS yakhala ikugwiritsidwa ntchito kwambiri muzakudya, mankhwala, mafuta, mankhwala a tsiku ndi tsiku, nsalu, kupanga mapepala, zomatira, ndi mafakitale opaka utoto. ndi
M'makampani azakudya, CMS ndi yopanda poizoni komanso yopanda vuto m'thupi la munthu ndipo itha kugwiritsidwa ntchito ngati chowongolera. Chomalizidwacho chimakhala ndi mawonekedwe abwino kwambiri, mtundu ndi kukoma, kupangitsa kuti ikhale yosalala, yakuda ndi yowonekera; CMS itha kugwiritsidwanso ntchito ngati chosungira chakudya. M'makampani opanga mankhwala, CMS imagwiritsidwa ntchito ngati disintegrant piritsi, plasma voliyumu yowonjezera, thickener pokonzekera mtundu wa keke ndi dispersant mankhwala oral suspoemulsion. CMS imagwiritsidwa ntchito kwambiri m'makampani opangira mafuta ngati njira yochepetsera kutaya kwamadzi. Imakhala ndi kukana kwa mchere, imatha kukana mchere mpaka kukhuta, ndipo imakhala ndi zotsatira zotsutsana ndi kugwa komanso mphamvu zina zotsutsana ndi calcium. Ndikotsika kwamadzimadzi kwapamwamba kwambiri. Komabe, chifukwa cha kuchepa kwa kutentha, chitha kugwiritsidwa ntchito pazitsime zosazama. CMS imagwiritsidwa ntchito popanga ulusi wopepuka, ndipo imakhala ndi mawonekedwe a kubalalitsidwa mwachangu, malo abwino opangira mafilimu, filimu yofewa, komanso kupanga kosavuta. CMS itha kugwiritsidwanso ntchito ngati tackifier ndi zosintha mumitundu yosiyanasiyana yosindikiza ndi utoto. CMS imagwiritsidwa ntchito ngati zomatira mu zokutira zamapepala, zomwe zimatha kupangitsa kuti zokutira zikhale zokhazikika bwino komanso kukhazikika kwamakamaka. Makhalidwe ake osungira madzi amawongolera kulowa kwa zomatira m'munsi mwa pepala, kupatsa pepala lokutidwa kuti likhale labwino kusindikiza. Komanso, CMS Angagwiritsidwenso ntchito ngati mamasukidwe akayendedwe reducer kwa malasha slurry ndi mafuta malasha osakaniza mafuta slurry, kotero kuti ali wabwino kuyimitsidwa emulsion bata ndi fluidity. Itha kugwiritsidwanso ntchito ngati tackifier ya penti yopangidwa ndi madzi a latex, chelating agent pochotsa zimbudzi za heavy metal, komanso zotsukira khungu muzodzola. Maonekedwe ake akuthupi ndi awa:
PH mtengo: Zamchere (5% amadzimadzi njira) Kusungunuka: Kutha kusungunuka m'madzi ozizira Fineness: Osakwana 500μm Kukhuthala: 400-1200mpas (5% amadzimadzi njira) Kugwirizana ndi zipangizo zina: Good ndi zina zomangira admixtures Kugwirizana
1. Ntchito yaikulu
Zabwino kwambiri mwachangu makulidwe luso: sing'anga mamasukidwe akayendedwe, mkulu madzi posungira;
Mlingo ndi wochepa, ndipo mlingo wochepa kwambiri ukhoza kukwaniritsa zotsatira zazikulu;
Kupititsa patsogolo luso la anti-sag la zinthu zomwezo;
Ili ndi lubricity yabwino, yomwe imatha kusintha magwiridwe antchito azinthu ndikupangitsa kuti ntchitoyo ikhale yabwino. ndi
2. kuchuluka kwa ntchito
Wowuma ether ndi oyenera mitundu yonse ya (simenti, gypsum, laimu-kashiamu) mkati ndi kunja khoma putty, ndi mitundu yonse ya kuyang'ana matope ndi pulasitala matope. Mlingo wovomerezeka: 0.05% -0.15% (kuyezedwa mu matani), kugwiritsidwa ntchito kwapadera kumatengera chiŵerengero chenichenicho. Itha kugwiritsidwa ntchito ngati chophatikizira pazinthu zopangira simenti, zopangidwa ndi gypsum ndi zinthu za lime-calcium. Wowuma ether amagwirizana bwino ndi zomangamanga ndi zosakaniza zina; ndizoyenera kwambiri pomanga zosakaniza zowuma monga matope, zomatira, pulasitala ndi zida zokutira. Ma starch ethers ndi methyl cellulose ethers (Tylose MC grade) amagwiritsidwa ntchito limodzi pomanga zosakaniza zowuma kuti apereke kukhuthala kwakukulu, kapangidwe kolimba, kukana kwa sag komanso kugwirika kosavuta. Kukhuthala kwa matope, zomatira, pulasitala ndi ma rolls okhala ndi ma ether apamwamba a methyl cellulose amatha kuchepetsedwa powonjezera ma starch ethers. ndi
3. Gulu la ethers wowuma
Ma ethers owuma omwe amagwiritsidwa ntchito mumatope amasinthidwa kuchokera ku ma polima achilengedwe a ma polysaccharides ena. Monga mbatata, chimanga, chinangwa, nyemba ndi zina zotero. ndi
General kusinthidwa wowuma
Wowuma etha wosinthidwa kuchokera ku mbatata, chimanga, chinangwa, ndi zina zotero. ali ndi madzi otsika kwambiri kuposa ma cellulose ether. Chifukwa cha kusinthika kosiyana, kukhazikika kwa asidi ndi alkali ndizosiyana. Zogulitsa zina ndizoyenera kugwiritsidwa ntchito mumatope opangidwa ndi gypsum, pomwe zina zitha kugwiritsidwa ntchito mumatope opangidwa ndi simenti. Kugwiritsidwa ntchito kwa wowuma ether mumatope kumagwiritsidwa ntchito makamaka ngati thickener kuti apititse patsogolo anti-sagging katundu wa matope, kuchepetsa kumamatira kwa matope onyowa, ndikutalikitsa nthawi yotsegula. Ma ethers owuma amagwiritsidwa ntchito limodzi ndi mapadi, kotero kuti katundu ndi zabwino za zinthu ziwirizi zimagwirizana. Popeza kuti mankhwala a starch ether ndi otchipa kwambiri kuposa ether cellulose, kugwiritsa ntchito starch ether mumatope kudzachepetsa kwambiri mtengo wa mapangidwe amatope. ndi
gulani ether
Guar chingamu ether ndi mtundu wa wowuma ether wokhala ndi zinthu zapadera, zomwe zimasinthidwa kuchokera ku nyemba zamtundu wa guar. Makamaka ndi etherification reaction ya guar chingamu ndi akiliriki zinchito gulu, kapangidwe munali 2-hydroxypropyl zinchito gulu aumbike, amene ndi polygalactomannose dongosolo.
(1) Poyerekeza ndi cellulose ether, guar gum ether imasungunuka kwambiri m'madzi. Mtengo wa pH ulibe mphamvu pakugwira ntchito kwa ma guar ethers. ndi
(2) Pansi pa ma viscosity otsika komanso mlingo wochepa, chingamu cha guar chingalowe m'malo mwa cellulose ether mumtengo wofanana, ndipo chimakhala ndi madzi osungiramo madzi. Koma kusasinthasintha, anti-sag, thixotropy ndi zina mwachiwonekere bwino. (3) Pansi pa ma viscosity apamwamba komanso mlingo waukulu, chingamu cha guar sichingalowe m'malo mwa cellulose ether, ndipo kugwiritsidwa ntchito kosakanikirana kwa awiriwa kudzatulutsa ntchito yabwino.
(4) Kugwiritsa ntchito guar chingamu mumatope opangidwa ndi gypsum kumatha kuchepetsa kwambiri kumamatira panthawi yomanga ndikupangitsa kuti ntchitoyo ikhale yosavuta. Zilibe zotsatira zoyipa pakuyika nthawi ndi mphamvu ya matope a gypsum. ndi
(5) Pamene guar chingamu ntchito simenti ofotokoza zomangamanga ndi pulasitala matope, akhoza m'malo mapadi etere mu ofanana kuchuluka, ndi endow matope ndi bwino sagging kukana, thixotropy ndi kusalala kwa zomangamanga. ndi
(6) Guar chingamu itha kugwiritsidwanso ntchito pazinthu monga zomatira matailosi, zodzikongoletsera pansi, putty wosamva madzi, ndi matope a polima potchingira khoma. ndi
(7) Popeza mtengo wa guar chingamu ndi wotsika kwambiri kuposa wa cellulose ether, kugwiritsidwa ntchito kwa guar gum mumatope kudzachepetsa kwambiri mtengo wa kupanga mankhwala. ndi
Kusinthidwa mchere madzi posungira thickener
Chowonjezera chosungira madzi chopangidwa ndi mchere wachilengedwe posintha ndi kuphatikiza chagwiritsidwa ntchito ku China. Mchere waukulu womwe umagwiritsidwa ntchito pokonzekera madzi osungira madzi ndi: sepiolite, bentonite, montmorillonite, kaolin, ndi zina zotero. Mcherewu uli ndi zinthu zina zosungira madzi ndi zowonjezera kupyolera mu kusinthidwa monga othandizira ogwirizanitsa. Mtundu woterewu wosunga madzi womwe umayikidwa pamatope uli ndi izi. ndi
(1) Itha kusintha kwambiri magwiridwe antchito amatope wamba, ndikuthetsa mavuto osagwira bwino ntchito yamatope a simenti, mphamvu yochepa yamatope osakanikirana, komanso kukana madzi. ndi
(2) Zogulitsa zamatope zomwe zimakhala ndi mphamvu zosiyanasiyana zamafakitale ndi nyumba zapagulu zitha kupangidwa. ndi
(3) Mtengo wazinthu ndi wotsika kwambiri kuposa wa cellulose ether ndi starch ether.
(4) Kusungirako madzi kumakhala kotsika kusiyana ndi kosungirako madzi kwa organic, shrinkage yowuma ya matope okonzeka ndi yaikulu, ndipo kugwirizana kumachepetsedwa. ndi
4. Kugwiritsa ntchito ether wowuma
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 ma polima osungunuka m'madzi monga polyvinyl acetate).
Zofunikira zazikulu:
(1) Wowuma ether nthawi zambiri amagwiritsidwa ntchito limodzi ndi methyl cellulose ether, zomwe zimasonyeza bwino synergistic zotsatira 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. ndi
(2) Kuonjezera mlingo woyenerera wa starch ether ku matope omwe ali ndi methyl cellulose ether akhoza kuonjezera kusasinthasintha kwa matope ndikusintha madzimadzi, kupangitsa kuti zomangamanga zikhale zosavuta komanso zopalasa bwino. (3) Kuonjezera mlingo woyenerera wa starch ether ku matope omwe ali ndi methyl cellulose ether kungapangitse kusungirako madzi mumatope ndikutalikitsa nthawi yotseguka. ndi
(4) Wowuma etha ndi mankhwala osinthidwa wowuma etha sungunuka m'madzi, n'zogwirizana ndi zina zowonjezera mu matope youma ufa, ntchito kwambiri zomatira matailosi, kukonza matope, pulasitala pulasitala, mkati ndi kunja khoma putty, gypsum-based ophatikizidwa Mgwirizano ndi kudzaza zipangizo. , mawonekedwe othandizira, matope omanga.
Makhalidwe a ether wowuma amakhala motere: ⑴kuwonjezera kukana kwa sag; ⑵ kukonza zomangamanga; ⑶ kuchuluka kwa zokolola zamatope, mlingo woyenera: 0.03% mpaka 0.05%.
Nthawi yotumiza: Feb-16-2023