Etherified sitaci wani sitaci ne mai maye gurbin ether wanda aka samar ta hanyar halayen ƙungiyoyin hydroxyl a cikin kwayoyin sitaci tare da abubuwa masu amsawa, gami da sitaci hydroxyalky, sitaci carboxymethyl, da sitaci cationic.Tun da etherification na sitaci inganta danko kwanciyar hankali da ether bond ba a sauƙaƙe hydrolyzed karkashin karfi alkaline yanayi, etherified sitaci da ake amfani da yawa masana'antu filayen.Carboxymethyl sitaci (CMS) wani nau'i ne na samfuran halitta na anionic da kuma polymer polyelectrolyte ether na halitta mai narkewa a cikin ruwan sanyi.A halin yanzu, an yi amfani da cMS sosai a abinci, magani, man fetur, sinadarai na yau da kullun, yadi, yin takarda, adhesives, da masana'antar fenti.da
A cikin masana'antar abinci, CMS ba mai guba bane kuma mara lahani ga jikin ɗan adam kuma ana iya amfani dashi azaman ingantaccen inganci.Kayan da aka gama yana da kyakkyawan siffar, launi da dandano, yana sa shi santsi, lokacin farin ciki da m;Hakanan ana iya amfani da CMS azaman ma'ajin abinci.A cikin masana'antar harhada magunguna, ana amfani da CMS azaman mai tarwatsewar kwamfutar hannu, mai faɗaɗa ƙarar plasma, mai kauri don shirye-shiryen nau'in biredi da masu rarraba magunguna don suspoemulsion na baka.Ana amfani da CMS sosai a cikin masana'antar mai a matsayin mai rage asarar ruwan laka.Yana da juriya na gishiri, yana iya tsayayya da gishiri zuwa jikewa, kuma yana da tasirin anti-slump da wani ikon anti-calcium.Yana da babban ingancin rage asarar ruwa.Koyaya, saboda ƙarancin juriya na zafin jiki, ana iya amfani dashi kawai a cikin ayyukan rijiyar mara zurfi.Ana amfani da CMS don daidaita girman yarn mai haske, kuma yana da halaye na tarwatsawa da sauri, kyawawan kayan ƙirƙirar fim, fim mai laushi, da sauƙin desizing.Hakanan za'a iya amfani da CMS azaman tackifier da gyarawa a cikin nau'ikan bugu da rini iri-iri.Ana amfani da CMS a matsayin manne a cikin takarda, wanda zai iya sa suturar ta sami daidaito mai kyau da kwanciyar hankali.Abubuwan da ke riƙe da ruwa suna sarrafa shigar da mannewa a cikin tushe na takarda, yana ba da takarda mai rufi mai kyau kayan bugawa.Bugu da kari, CMS kuma za a iya amfani da a matsayin danko reducer ga kwal slurry da mai-kwal gauraye man slurry, sabõda haka, yana da kyau dakatar emulsion kwanciyar hankali da kuma fluidity.Hakanan za'a iya amfani da shi azaman maƙarƙashiya don fentin latex na tushen ruwa, wakili mai lalata don maganin najasa ƙarfe mai nauyi, da mai tsabtace fata a cikin kayan kwalliya.Siffofinsa na zahiri sune kamar haka:
PH darajar: Alkaline (5% bayani mai ruwa) Solubility: Za a iya narkar da shi a cikin ruwan sanyi Fineness: Kasa da 500μm Danko: 400-1200mpas (5% mai ruwa bayani) Daidaitawa tare da sauran kayan: Kyakkyawan tare da sauran kayan haɗin gine-gine Daidaitawa
1. Babban aikin
Kyakkyawan ƙarfin ƙarfin ƙarfi mai sauri: matsakaicin danko, babban riƙewar ruwa;
Matsakaicin ƙarami ne, kuma ƙarancin ƙarancin ƙima zai iya cimma babban sakamako;
Inganta ƙarfin anti-sag na kayan kanta;
Yana da kyau mai kyau, wanda zai iya inganta aikin aiki na kayan aiki kuma ya sa aikin ya fi sauƙi.da
2. iyakar amfani
Sitaci ether ya dace da kowane nau'in (ciminti, gypsum, lemun tsami-calcium) na ciki da na waje da bangon bango, da kowane nau'in turmi na fuskantar turmi da plastering.Shawarar sashi: 0.05% -0.15% (aunawa cikin ton), takamaiman amfani yana ƙarƙashin ainihin rabo.Ana iya amfani dashi azaman abin haɗaka don samfuran tushen siminti, samfuran tushen gypsum da samfuran lemun tsami-calcium.Sitaci ether yana da dacewa mai kyau tare da sauran gine-gine da abubuwan haɓakawa;ya dace musamman don gina busassun gauraya kamar turmi, adhesives, filasta da kayan birgima.Sitaci ethers da methyl cellulose ethers (Tylose MC maki) ana amfani da tare a yi busassun gauraye da ba da mafi girma thickening, ƙarfi tsarin, sag juriya da sauƙi na handling.Za'a iya rage dankowar turmi, adhesives, plasters da renders masu ɗauke da mafi girman ethers na methyl cellulose ta hanyar ƙara ethers sitaci.da
3. Rarraba ethers sitaci
Ethers na sitaci da ake amfani da su a cikin turmi an canza su daga polymers na wasu polysaccharides.Kamar dankalin turawa, masara, rogo, wake da sauransu.da
Babban sitaci da aka gyara
Sitaci ether wanda aka gyara daga dankalin turawa, masara, rogo, da sauransu yana da ƙarancin riƙe ruwa fiye da ether cellulose.Saboda nau'in gyare-gyare daban-daban, kwanciyar hankali ga acid da alkali ya bambanta.Wasu samfurori sun dace don amfani da su a cikin turmi na gypsum, yayin da wasu za a iya amfani da su a cikin turmi na ciminti.Aikace-aikacen sitaci ether a cikin turmi ana amfani da shi ne azaman mai kauri don inganta kayan hana lalata turmi, rage manne da rigar turmi, da tsawaita lokacin buɗewa.Ana amfani da sitaci ether sau da yawa tare da cellulose, ta yadda kaddarorin da fa'idodin waɗannan samfuran guda biyu su dace da juna.Tunda samfuran sitaci ether sun fi rahusa fiye da ether cellulose, aikace-aikacen sitaci ether a cikin turmi zai kawo raguwa mai yawa a cikin farashin ƙirar turmi.da
gusar ether
Guar gum ether wani nau'in ether ne na sitaci tare da kaddarorin musamman, wanda aka gyara daga wake gua na halitta.Yawanci ta hanyar etherification na guar danko da ƙungiyar aikin acrylic, an kafa tsarin da ke ɗauke da ƙungiyar aikin 2-hydroxypropyl, wanda shine tsarin polygalactomannose.
(1) Idan aka kwatanta da ether cellulose, guar gum ether ya fi narkewa cikin ruwa.Ƙimar pH ba ta da tasiri a kan aikin guar ethers.da
(2) A ƙarƙashin yanayin ƙananan danko da ƙananan sashi, guar danko zai iya maye gurbin ether cellulose a daidai adadin, kuma yana da irin wannan riƙewar ruwa.Amma daidaito, anti-sag, thixotropy da sauransu an inganta su a fili.(3) A karkashin yanayin babban danko da babban sashi, guar gum ba zai iya maye gurbin ether cellulose ba, kuma gauraye amfani da su biyu zai samar da mafi kyawun aiki.
(4) Yin amfani da guar gum a cikin turmi na tushen gypsum na iya rage mannewa sosai yayin ginin kuma ya sa ginin ya fi sauƙi.Ba shi da wani mummunan tasiri akan saita lokaci da ƙarfin turmi gypsum.da
(5) Lokacin da aka yi amfani da guar danko a cikin masonry na siminti da plastering turmi, zai iya maye gurbin cellulose ether a daidai adadin, da kuma ba da turmi mafi kyau sagging juriya, thixotropy da santsi na gini.da
(6) Hakanan za'a iya amfani da ƙugiya a cikin samfura irin su tile adhesives, ƙwanƙwasa matakin ƙasa, putty mai jure ruwa, da turmi polymer don rufin bango.da
(7) Tun da farashin guar gum yana da mahimmanci fiye da na cellulose ether, yin amfani da guar gum a cikin turmi zai rage farashin samfurin samfurin.da
Gyaran ruwan ma'adinai mai kauri
An yi amfani da kauri mai riƙe ruwa da aka yi da ma'adanai na halitta ta hanyar gyare-gyare da haɗawa a cikin Sin.Babban ma'adanai da ake amfani da su don shirya kauri mai riƙe ruwa sune: sepiolite, bentonite, montmorillonite, kaolin, da dai sauransu. Waɗannan ma'adanai suna da wasu abubuwan da ke riƙe ruwa da kauri ta hanyar gyare-gyare kamar abubuwan haɗin gwiwa.Irin wannan kauri mai riƙe ruwa da ake yi wa turmi yana da halaye masu zuwa.da
(1) Yana iya inganta aikin turmi na yau da kullun, da magance matsalolin rashin aiki na turmi siminti, ƙarancin ƙarfin cakuɗewar turmi, da ƙarancin juriya na ruwa.da
(2) Ana iya samar da samfuran turmi tare da matakan ƙarfi daban-daban don masana'antu gabaɗaya da gine-ginen farar hula.da
(3) Farashin kayan yana da mahimmanci ƙasa da na ether cellulose da sitaci ether.
(4) Riƙewar ruwa ya fi ƙasa da na kwayoyin ruwa na kwayoyin halitta, ƙimar bushewar bushewar turmi da aka shirya ya fi girma, kuma an rage haɗin kai.da
4. Aikace-aikacen sitaci ether
An fi amfani da sitaci ether a ginin turmi, wanda zai iya rinjayar daidaiton turmi dangane da gypsum, siminti da lemun tsami, da canza ginin da juriya na turmi.Yawanci ana amfani da ethers na sitaci tare da ethers cellulose da ba a gyaggyarawa ba.Ya dace da duka tsaka-tsaki da tsarin alkaline, kuma yana dacewa da mafi yawan abubuwan da ake ƙarawa a cikin gypsum da samfuran siminti (kamar surfactants, MC, sitaci da polymers mai narkewa kamar su polyvinyl acetate).
Babban fasali:
(1) Ana amfani da sitaci ether yawanci tare da methyl cellulose ether, wanda ke nuna sakamako mai kyau na haɗin gwiwa tsakanin su biyun.Ƙara adadin da ya dace na sitaci ether zuwa methyl cellulose ether zai iya inganta juriya na sag da juriya na turmi, tare da ƙimar yawan amfanin ƙasa.da
(2) Ƙara adadin da ya dace na sitaci ether zuwa turmi mai dauke da methyl cellulose ether zai iya ƙara yawan daidaito na turmi da kuma inganta yawan ruwa, yana sa ginin ya fi sauƙi da kuma gogewa.(3) Ƙara adadin da ya dace na sitaci ether zuwa turmi mai dauke da methyl cellulose ether zai iya ƙara yawan ruwa na turmi kuma ya tsawaita lokacin budewa.da
(4) Sitaci ether wani sitaci ne wanda aka gyara ta sitaci ether mai narkewa a cikin ruwa, mai dacewa da sauran abubuwan da ake buƙata a cikin busassun busassun turmi, ana amfani da su sosai a cikin tile adhesives, gyaran turmi, plasters plasters, ciki da waje bangon bango, gypsum na tushen haɗin gwiwa da kayan cikawa. , dubawa jami'ai, masonry turmi.
Halayen sitaci ether galibi suna cikin: ⑴inganta juriya na sag;⑵ inganta gini;⑶ haɓaka yawan turmi, shawarar da aka ba da shawarar: 0.03% zuwa 0.05%.
Lokacin aikawa: Fabrairu-16-2023