1 Gabatarwa
Cellulose ether (MC) ana amfani dashi sosai a cikin masana'antar kayan gini kuma ana amfani dashi da yawa.Ana iya amfani da shi azaman mai hana ruwa, wakili mai riƙe ruwa, mai kauri da mannewa.A cikin talakawa bushe-mixed turmi, waje bango rufi turmi, kai matakin turmi, tayal m, high-yi gini putty, crack-resistant ciki da kuma na waje bango putty, mai hana ruwa busassun gauraye turmi, gypsum plaster, caulking wakili da sauran kayan, cellulose Ethers suna taka muhimmiyar rawa.Cellulose ether yana da tasiri mai mahimmanci akan riƙewar ruwa, buƙatar ruwa, haɗin kai, jinkirtawa da gina tsarin turmi.
Akwai nau'o'i daban-daban da ƙayyadaddun bayanai na ethers cellulose.Ethers cellulose da aka fi amfani da su a fagen kayan gini sun haɗa da HEC, HPMC, CMC, PAC, MHEC, da dai sauransu, waɗanda ake amfani da su a cikin tsarin turmi daban-daban gwargwadon halayensu.Wasu mutane sun yi bincike game da tasirin nau'o'in nau'i daban-daban da nau'o'in ether na cellulose daban-daban akan tsarin siminti.Wannan labarin yana mai da hankali kan wannan tushe kuma yayi bayanin yadda ake zaɓar nau'ikan iri daban-daban da ƙayyadaddun ethers na cellulose a cikin samfuran turmi daban-daban.
2 Halayen aiki na ether cellulose a cikin turmi siminti
A matsayin wani abu mai mahimmanci a cikin busassun busassun turmi, ether cellulose yana da ayyuka da yawa a cikin turmi.Mafi mahimmancin aikin ether cellulose a cikin turmi siminti shine riƙe ruwa da kauri.Bugu da kari, saboda mu'amalarsa da tsarin siminti, zai kuma iya taka rawa wajen shigar da iska, da ja da baya, da inganta karfin hadin gwiwa.
Mafi mahimmancin aikin ether cellulose a cikin turmi shine riƙewar ruwa.Ana amfani da ether cellulose a matsayin wani abu mai mahimmanci a cikin kusan dukkanin kayan turmi, musamman saboda yawan ruwa.Gabaɗaya magana, riƙewar ruwa na ether cellulose yana da alaƙa da danko, ƙarin adadin da girman barbashi.
Ana amfani da ether cellulose azaman thickener, kuma tasirinsa na kauri yana da alaƙa da digiri na etherification, girman barbashi, danko da gyare-gyaren digiri na ether cellulose.Gabaɗaya magana, mafi girma matakin etherification da danko na cellulose ether, ƙarami da barbashi, da mafi fili da thickening sakamako.Ta hanyar daidaita abubuwan da ke sama na MC, turmi zai iya cimma daidaitaccen aikin anti-sagging da mafi kyawun danko.
A cikin ether cellulose, gabatarwar ƙungiyar alkyl yana rage ƙarfin sararin samaniya na maganin ruwa wanda ke dauke da ether cellulose, don haka ether cellulose yana da tasirin iska akan turmi siminti.Gabatar da kumfa mai dacewa a cikin turmi yana inganta aikin ginin turmi saboda "tasirin ball" na iska.A lokaci guda, ƙaddamar da kumfa na iska yana ƙara yawan fitarwa na turmi.Tabbas, ana buƙatar sarrafa adadin kuzarin iska.Yawan haɓakar iska zai yi mummunan tasiri akan ƙarfin turmi, saboda ana iya gabatar da kumfa mai cutarwa.
2.1 Cellulose ether zai jinkirta tsarin hydration na siminti, ta haka ne ya rage saitin da ƙarfafa tsarin ciminti, da kuma tsawaita lokacin buɗe turmi daidai, amma wannan tasirin ba shi da kyau ga turmi a cikin yankuna masu sanyi.Lokacin zabar ether cellulose, ya kamata a zaɓi samfurin da ya dace bisa ga takamaiman halin da ake ciki.Sakamakon retarding na ether cellulose yana da yawa yana ƙarawa tare da haɓaka digiri na etherification, digiri na gyare-gyare da danko.
Bugu da ƙari, ether cellulose, a matsayin abu mai tsawo na polymer, zai iya inganta aikin haɗin gwiwa tare da substrate bayan an ƙara shi zuwa tsarin siminti a ƙarƙashin yanayin cikakken kula da danshi na slurry.
2.2 The Properties na cellulose ether a turmi yafi hada da: ruwa riƙewa, thickening, tsawanta saitin lokaci, entraining iska da kuma inganta tensile bonding ƙarfi, da dai sauransu Daidai da sama Properties, shi ne nuna a cikin halaye na MC kanta, wato: danko, kwanciyar hankali, abun ciki na kayan aiki masu aiki (ƙarin adadin), digiri na maye gurbin etherification da daidaituwarsa, digiri na gyare-gyare, abun ciki na abubuwa masu cutarwa, da dai sauransu. Saboda haka, lokacin zabar MC, ether cellulose tare da halayensa wanda zai iya samar da aikin da ya dace ya kamata ya kasance. wanda aka zaɓa bisa ga takamaiman buƙatun takamaiman samfurin turmi don takamaiman aiki.
3 Halayen ether cellulose
Gabaɗaya magana, umarnin samfurin da masana'antun ether na cellulose ke bayarwa za su haɗa da alamomi masu zuwa: bayyanar, danko, matakin maye gurbin rukuni, fineness, abun ciki mai aiki (tsarki), abun ciki na danshi, wuraren da aka ba da shawarar da sashi, da sauransu. wani ɓangare na aikin ether cellulose, amma lokacin kwatanta da zaɓar ether cellulose, wasu nau'o'in irin su sinadaran sinadaran, digiri na gyare-gyare, digiri na etherification, abun ciki na NaCl, da darajar DS ya kamata a bincika.
3.1 Danko na cellulose ether
Dankowar ether cellulose yana rinjayar riƙewar ruwa, kauri, jinkirin da sauran al'amura.Sabili da haka, alama ce mai mahimmanci don dubawa da zaɓar ether cellulose.
Kafin yin magana game da danko na ether cellulose, ya kamata a lura cewa akwai hanyoyi guda hudu da ake amfani da su don gwada danko na ether cellulose: Brookfield, Hakke, Höppler, da kuma viscometer na juyawa.Kayan aiki, ƙaddamarwar bayani da yanayin gwajin da hanyoyin huɗun ke amfani da su sun bambanta, don haka sakamakon MC iri ɗaya da aka gwada ta hanyoyin huɗu shima ya bambanta sosai.Ko da don wannan bayani, ta yin amfani da wannan hanya, gwaji a ƙarƙashin yanayi daban-daban na muhalli, danko
Sakamako kuma sun bambanta.Sabili da haka, lokacin da aka bayyana danko na ether cellulose, ya zama dole don nuna hanyar da ake amfani da ita don gwaji, ƙaddamar da bayani, rotor, saurin juyawa, gwajin zafin jiki da zafi da sauran yanayin muhalli.Wannan darajar danko yana da daraja.Ba shi da ma'ana kawai a ce "menene dankowar wani MC".
3.2 Samfurin Samfura na Cellulose Ether
An san ethers na cellulose suna da sauƙin kai hari ta hanyar ƙwayoyin cellulosic.Lokacin da naman gwari ya rushe ether cellulose, ya fara kai hari ga rukunin glucose da ba a tantance ba a cikin ether cellulose.A matsayin fili mai layi, da zarar an lalata rukunin glucose, duk sarkar kwayoyin sun karye, kuma dankon samfurin zai ragu sosai.Bayan naúrar glucose ta ƙare, ƙirar ba za ta iya lalata sarkar kwayoyin ba cikin sauƙi.Sabili da haka, mafi girman matakin maye gurbin etherification (darajar DS) na ether cellulose, mafi girman kwanciyar hankali zai kasance.
3.3 Abun ciki mai aiki na cellulose ether
Mafi girman abun ciki na kayan aiki masu aiki a cikin ether cellulose, mafi girman aikin farashin samfurin, don haka za'a iya samun sakamako mafi kyau tare da sashi ɗaya.Abubuwan da ke da tasiri a cikin ether cellulose shine cellulose ether molecule, wanda shine kwayoyin halitta.Sabili da haka, lokacin nazarin ingantaccen abun ciki na cellulose ether, ana iya nunawa a kaikaice ta ƙimar ash bayan calcination.
3.4 NaCl abun ciki a cikin ether cellulose
NaCl samfuri ne da babu makawa a cikin samar da ether cellulose, wanda gabaɗaya yana buƙatar cirewa ta hanyar wankewa da yawa, kuma yawancin lokutan wankewa, ƙarancin NaCl ya rage.NaCl sanannen haɗari ne ga lalata sandunan ƙarfe da ragar waya na ƙarfe.Sabili da haka, kodayake maganin najasa na wanke NaCl sau da yawa na iya ƙara farashin, lokacin zabar samfuran MC, ya kamata mu yi ƙoƙari mu zaɓi samfuran da ƙananan abun ciki na NaCl.
4 Ka'idodin zabar ether cellulose don samfuran turmi daban-daban
Lokacin zabar ether cellulose don samfuran turmi, da farko, bisa ga bayanin jagorar samfurin, zaɓi alamun aikin kansa (kamar danko, matakin maye gurbin etherification, abun ciki mai inganci, abun ciki na NaCl, da sauransu) Halayen aiki da zaɓin zaɓi. ka'idoji
4.1 Tsarin filastar bakin ciki
Ɗaukar turmi mai laushi na tsarin plastering na bakin ciki a matsayin misali, tun da plastering turmi kai tsaye yana tuntuɓar yanayin waje, saman yana rasa ruwa da sauri, don haka ana buƙatar ƙimar riƙe ruwa mafi girma.Musamman a lokacin ginawa a lokacin rani, ana buƙatar cewa turmi zai iya riƙe danshi mafi kyau a yanayin zafi.Ana buƙatar zaɓin MC tare da ƙimar riƙe ruwa mai girma, wanda za'a iya la'akari da shi gabaɗaya ta fannoni uku: danko, girman barbashi, da adadin ƙari.Gabaɗaya magana, a ƙarƙashin yanayi iri ɗaya, zaɓi MC tare da ɗanko mafi girma, kuma la'akari da buƙatun iya aiki, danko bai kamata ya zama babba ba.Sabili da haka, MC ɗin da aka zaɓa ya kamata ya kasance yana da yawan ajiyar ruwa da ƙananan danko.Daga cikin MC kayayyakin, MH60001P6 da dai sauransu za a iya bada shawarar ga m plastering tsarin na bakin ciki plastering.
4.2 Turmi na tushen siminti
Turmi plastering yana buƙatar daidaitaccen turmi, kuma yana da sauƙi a yi amfani da shi daidai lokacin da ake yin plastering.A lokaci guda, yana buƙatar kyakkyawan aiki na rigakafin sagging, babban ƙarfin yin famfo, ruwa da aiki.Sabili da haka, an zaɓi MC tare da ƙananan danko, saurin watsawa da haɓaka daidaituwa (ƙananan ƙwayoyin cuta) a cikin turmi siminti an zaɓi.
A cikin ginin tile m, don tabbatar da aminci da inganci mai kyau, ana buƙatar musamman cewa turmi yana da tsayin buɗewa lokacin buɗewa kuma mafi kyawun aikin anti-slide, kuma a lokaci guda yana buƙatar kyakkyawar alaƙa tsakanin substrate da tayal. .Saboda haka, tile adhesives suna da ingantattun buƙatu don MC.Koyaya, MC gabaɗaya yana da ɗan ƙaramin abun ciki a cikin mannen tayal.Lokacin zabar MC, don saduwa da buƙatun dogon lokacin buɗewa, MC da kanta yana buƙatar samun ƙimar riƙewar ruwa mai girma, kuma adadin riƙewar ruwa yana buƙatar ɗanƙon da ya dace, ƙarin adadin da girman barbashi.Domin saduwa da mai kyau anti-zamiya yi, da thickening sakamako na MC ne mai kyau, don haka da cewa turmi yana da karfi a tsaye kwarara juriya, da thickening yi yana da wasu bukatu a kan danko, etherification digiri da barbashi size.
4.4 Turmi ƙasa mai daidaita kai
Turmi mai daidaitawa da kai yana da buƙatu mafi girma akan aikin daidaitawa na turmi, don haka ya dace don zaɓar samfuran ether mara ƙarfi na cellulose.Tun da matakin kai yana buƙatar cewa turmi mai motsawa daidai za a iya daidaita shi ta atomatik a ƙasa, ana buƙatar ruwa da famfo, don haka rabon ruwa zuwa abu yana da girma.Don hana zub da jini, ana buƙatar MC don sarrafa riƙewar ruwa na saman kuma samar da danko don hana lalata.
4.5 Masonry turmi
Saboda turmi mai kauri kai tsaye yana tuntuɓar saman ginin, gabaɗaya gini ne mai kauri.Ana buƙatar turmi don samun babban aiki da riƙewar ruwa, kuma yana iya tabbatar da haɗin gwiwa tare da masonry, inganta aikin aiki, da kuma ƙara yawan aiki.Sabili da haka, MC da aka zaɓa ya kamata ya taimaka wa turmi don inganta aikin da ke sama, kuma danko na ether cellulose bai kamata ya kasance mai girma ba.
4.6 Insulation slurry
Tun da slurry na thermal yana amfani da hannu da hannu, ana buƙatar cewa MC da aka zaɓa zai iya ba da turmi mai kyau aiki mai kyau, kyakkyawan aiki da ingantaccen ruwa.Hakanan ya kamata MC ya kasance yana da halayen babban danko da haɓakar iska.
5 Kammalawa
Ayyukan ether cellulose a cikin turmi ciminti sune riƙewar ruwa, kauri, shigar da iska, jinkiri da haɓaka ƙarfin haɗin gwiwa, da dai sauransu.
Lokacin aikawa: Janairu-30-2023