1. Intshayelelo
I-Cellulose ether (MC) isetyenziswa kakhulu kushishino lwezixhobo zokwakha kwaye isetyenziswa ngobuninzi. Ingasetyenziswa njenge-retarder, i-arhente yokugcina amanzi, i-thickener kunye ne-adhesive. Kwi-mortar eqhelekileyo exutywe ngomileyo, i-mortar yangaphandle yokukhusela udonga, i-mortar ezilinganisayo, i-adhesive yethayile, i-building putty esebenza kakuhle, i-inside and external wall putty engaqhekekiyo, i-mortar engangeni manzi exutywe ngomileyo, i-gypsum plaster, i-caulking agent kunye nezinye izinto, ii-cellulose Ethers zidlala indima ebalulekileyo. I-cellulose ether inempembelelo ebalulekileyo ekugcinweni kwamanzi, imfuno yamanzi, ukuhambelana, ukulibaziseka kunye nokwakhiwa kwenkqubo ye-mortar.
Kukho iintlobo ezininzi ezahlukeneyo kunye neenkcukacha ze-cellulose ethers. Ii-cellulose ethers ezisetyenziswa kakhulu kwicandelo lezixhobo zokwakha ziquka i-HEC, i-HPMC, i-CMC, i-PAC, i-MHEC, njl.njl., ezisetyenziswa kwiinkqubo ezahlukeneyo ze-mortar ngokweempawu zazo. Abanye abantu benze uphando ngempembelelo yeentlobo ezahlukeneyo kunye nobungakanani obahlukeneyo be-cellulose ether kwinkqubo ye-mortar yesamente. Eli nqaku ligxile kwesi siseko kwaye lichaza indlela yokukhetha iintlobo ezahlukeneyo kunye neenkcukacha ze-cellulose ethers kwiimveliso ezahlukeneyo ze-mortar.
2 Iimpawu zokusebenza kwe-cellulose ether kwi-samente mortar
Njengomxube obalulekileyo kwi-dry powder mortar, i-cellulose ether inemisebenzi emininzi kwi-mortar. Eyona ndima ibalulekileyo ye-cellulose ether kwi-samente mortar kukugcina amanzi kunye nokuqina. Ukongeza, ngenxa yokusebenzisana kwayo nenkqubo yesamente, inokudlala indima encedisayo ekufakeni umoya, ekubuyiseleni umva, nasekuphuculeni amandla e-tensile bond.
Eyona nto ibalulekileyo eyenziwa yi-cellulose ether kwi-mortar kukugcinwa kwamanzi. I-Cellulose ether isetyenziswa njengomxube obalulekileyo phantse kuzo zonke iimveliso ze-mortar, ikakhulu ngenxa yokugcina amanzi kwayo. Ngokubanzi, ukugcinwa kwamanzi kwe-cellulose ether kunxulumene ne-viscosity yayo, ubungakanani bayo bokongeza kunye nobukhulu bamasuntswana.
I-Cellulose ether isetyenziswa njengesithambisi, kwaye isiphumo sayo sokutyeba sinxulumene neqondo lokuthambisa, ubungakanani besuntswana, i-viscosity kunye neqondo lokuguqulwa kwe-cellulose ether. Ngokubanzi, okukhona inqanaba lokuthambisa kunye ne-viscosity ye-cellulose ether liphezulu, kokukhona amasuntswana emancinci, kokukhona isiphumo sokutyeba sibonakala ngakumbi. Ngokulungisa iimpawu ze-MC ezingasentla, i-mortar inokufezekisa ukusebenza okufanelekileyo kokulwa nokugoba kunye ne-viscosity engcono.
Kwi-cellulose ether, ukungeniswa kweqela le-alkyl kunciphisa amandla omphezulu wesisombululo samanzi esine-cellulose ether, ukuze i-cellulose ether ibe nefuthe lokungenisa umoya kwi-samente mortar. Ukungenisa amaqamza omoya afanelekileyo kwi-mortar kuphucula ukusebenza kokwakhiwa kwe-mortar ngenxa "yempembelelo yebhola" yamaqamza omoya. Kwangaxeshanye, ukungeniswa kwamaqamza omoya kwandisa izinga lokukhupha i-mortar. Kakade ke, ubungakanani bokungenisa umoya kufuneka bulawulwe. Ukungena komoya kakhulu kuya kuba nefuthe elibi kumandla e-mortar, kuba amaqamza omoya anobungozi anokungeniswa.
2.1 I-Cellulose ether iya kulibazisa inkqubo yokufunxa isamente, ngaloo ndlela icothise inkqubo yokubeka kunye nokuqinisa isamente, kwaye yolule ixesha lokuvula isamente ngokufanelekileyo, kodwa esi siphumo asilunganga kwisamente kwiindawo ezibandayo. Xa ukhetha i-cellulose ether, imveliso efanelekileyo kufuneka ikhethwe ngokwemeko ethile. Isiphumo sokulibazisa se-cellulose ether sandiswa kakhulu ngokwanda kwenqanaba layo le-etherification, inqanaba lokuguqulwa kunye ne-viscosity.
Ukongeza, i-cellulose ether, njengesixhobo se-polymer esine-long-chain, inokuphucula ukusebenza kwe-bonding kunye ne-substrate emva kokuba yongezwe kwinkqubo yesamente phantsi kwesiseko sokugcina ngokupheleleyo umxholo wokufuma kwe-slurry.
2.2 Iimpawu ze-cellulose ether kwi-mortar ziquka ikakhulu: ukugcinwa kwamanzi, ukuqina, ukwandisa ixesha lokubeka, ukufaka umoya kunye nokuphucula amandla okubopha okuxineneyo, njl. Ngokuhambelana nezi mpawu zingasentla, kubonakala kwiimpawu ze-MC ngokwayo, ezizezi: i-viscosity, uzinzo, umxholo wezithako ezisebenzayo (ubungakanani bokongeza), inqanaba lokutshintshwa kwe-ether kunye nokufana kwayo, inqanaba lokuguqulwa, umxholo wezinto ezinobungozi, njl. Ke ngoko, xa ukhetha i-MC, i-cellulose ether eneempawu zayo ezinokubonelela ngokusebenza okufanelekileyo kufuneka ikhethwe ngokweemfuno ezithile zemveliso ethile ye-mortar yokusebenza okuthile.
Iimpawu ezi-3 ze-cellulose ether
Ngokubanzi, imiyalelo yemveliso enikezelwa ngabavelisi be-cellulose ether iya kubandakanya ezi mpawu zilandelayo: inkangeleko, i-viscosity, inqanaba lokutshintshwa kweqela, ubunono, umxholo wezinto ezisebenzayo (ubumsulwa), umxholo womswakama, iindawo ezicetyiswayo kunye nomthamo, njl. Ezi zibonakaliso zokusebenza zinokubonisa inxalenye yendima ye-cellulose ether, kodwa xa kuthelekiswa nokukhetha i-cellulose ether, ezinye iinkalo ezifana nokwakheka kwayo kweekhemikhali, inqanaba lokuguqulwa, inqanaba le-etherification, umxholo we-NaCl, kunye nexabiso le-DS nazo kufuneka zihlolwe.
3.1 Ukuqina kwe-cellulose ether
Ukuqina kwe-cellulose ether kuchaphazela ukugcinwa kwamanzi, ukuqina kwayo, ukulibaziseka kwayo kunye nezinye izinto. Ke ngoko, sisalathisi esibalulekileyo sokuhlola nokukhetha i-cellulose ether.
Ngaphambi kokuba sixoxe nge-viscosity ye-cellulose ether, kufuneka kuqatshelwe ukuba kukho iindlela ezine ezisetyenziswa rhoqo ukuvavanya i-viscosity ye-cellulose ether: iBrookfield, iHakke, iHöppler, kunye ne-rotational viscometer. Izixhobo, uxinaniso lwesisombululo kunye nendawo yovavanyo esetyenziswa ziindlela ezine zahlukile, ngoko ke iziphumo zesisombululo se-MC esifanayo esivavanywe ziindlela ezine nazo zahlukile kakhulu. Nokuba kwisisombululo esifanayo, kusetyenziswa indlela efanayo, ukuvavanya phantsi kweemeko ezahlukeneyo zendalo, i-viscosity
Iziphumo nazo ziyahluka. Ke ngoko, xa kucaciswa i-viscosity ye-cellulose ether, kuyimfuneko ukubonisa ukuba yeyiphi indlela esetyenziselwa uvavanyo, uxinaniso lwesisombululo, i-rotor, isantya esijikelezayo, ukuvavanya ubushushu kunye nokufuma kunye nezinye iimeko zokusingqongileyo. Eli xabiso le-viscosity lixabisekile. Akunamsebenzi ukuthi nje "yintoni i-viscosity ye-MC ethile".
3.2 Uzinzo lweMveliso yeCellulose Ether
Ii-ether ze-cellulose zaziwa ngokuba zinokuhlaselwa zii-mold ze-cellulosic. Xa i-fungus itshabalalisa i-ether ye-cellulose, iqala ihlasele iyunithi ye-glucose engatshintshwanga kwi-ether ye-cellulose. Njenge-compound ethe ngqo, xa iyunithi ye-glucose itshatyalalisiwe, lonke uthotho lwee-molecular luyaphuka, kwaye i-viscosity yemveliso iya kwehla ngokukhawuleza. Emva kokuba iyunithi ye-glucose itshintshwa, i-mold ayizukuyitshabalalisa ngokulula i-molecular chain. Ke ngoko, okukhona inqanaba lokutshintshwa kwe-etherification (ixabiso le-DS) le-ether ye-cellulose liphezulu, kokukhona uzinzo lwayo luya kuba phezulu.
3.3 Umxholo wesithako esisebenzayo se-cellulose ether
Okukhona umxholo wezithako ezisebenzayo kwi-cellulose ether uphezulu, kokukhona ukusebenza kwexabiso lemveliso kuphezulu, ukuze iziphumo ezingcono zifumaneke ngedosi efanayo. Isithako esisebenzayo kwi-cellulose ether yi-cellulose ether molecule, eyinto yendalo. Ke ngoko, xa kuhlolwa umxholo wezinto ezisebenzayo kwi-cellulose ether, inokubonakaliswa ngokungathanga ngqo lixabiso lothuthu emva kokuba i-calcination inyukile.
3.4 Umxholo weNaCl kwi-cellulose ether
I-NaCl yimveliso engenakuphepheka ekuvelisweni kwe-cellulose ether, ekufuneka isuswe ngokuhlanjwa izihlandlo ezininzi, kwaye okukhona amaxesha amaninzi okuhlanjwa, kokukhona i-NaCl incinci. I-NaCl yingozi eyaziwayo yokugqwala kweentsimbi zentsimbi kunye ne-mesh yentsimbi. Ke ngoko, nangona unyango lwelindle lokuhlamba i-NaCl amaxesha amaninzi lunokunyusa iindleko, xa sikhetha iimveliso ze-MC, kufuneka sizame konke okusemandleni ethu ukukhetha iimveliso ezinomthamo ophantsi we-NaCl.
Imigaqo emi-4 yokukhetha i-cellulose ether kwiimveliso ezahlukeneyo zedaka
Xa ukhetha i-cellulose ether kwiimveliso ze-mortar, okokuqala, ngokwenkcazo yencwadana yemveliso, khetha izalathisi zayo zokusebenza (ezifana ne-viscosity, inqanaba lokutshintshwa kwe-etherification, umxholo wezinto ezisebenzayo, umxholo we-NaCl, njl.njl.) Iimpawu zokusebenza kunye nemigaqo yokukhetha
4.1 Inkqubo yeplasta ebhityileyo
Ukuthatha i-plastering mortar yenkqubo yokuplasta ebhityileyo njengomzekelo, ekubeni i-plastering mortar idibana ngqo nokusingqongileyo kwangaphandle, umphezulu ulahlekelwa ngamanzi ngokukhawuleza, ngoko ke kufuneka izinga eliphezulu lokugcina amanzi. Ingakumbi ngexesha lokwakha ehlotyeni, kufuneka i-mortar ikwazi ukugcina umswakama ngcono kubushushu obuphezulu. Kufuneka ukhethe i-MC enezinga eliphezulu lokugcina amanzi, enokuthathwa ingqalelo ngokupheleleyo kwiinkalo ezintathu: i-viscosity, ubungakanani bamasuntswana, kunye nobungakanani bokongeza. Ngokubanzi, phantsi kweemeko ezifanayo, khetha i-MC ene-viscosity ephezulu, kwaye uqwalasele iimfuno zokusebenza, i-viscosity akufuneki ibe phezulu kakhulu. Ke ngoko, i-MC ekhethiweyo kufuneka ibe nezinga eliphezulu lokugcina amanzi kunye ne-viscosity ephantsi. Phakathi kweemveliso ze-MC, i-MH60001P6 njl. ingacetyiswa kwinkqubo yokuplasta enamathelayo yokuplasta ebhityileyo.
4.2 Udaka lokuplasta olusekwe kwisamente
Ukudibanisa i-mortar neplasta kufuna ukulingana okuhle kwe-mortar, kwaye kulula ukuyisebenzisa ngokulinganayo xa udibanisa i-plasta. Kwangaxeshanye, ifuna ukusebenza kakuhle kokungagungqi, amandla aphezulu okupompa, ukunyibilika kunye nokusebenza lula. Ke ngoko, kukhethwa i-MC ene-viscosity ephantsi, ukusasazeka ngokukhawuleza kunye nophuhliso oluhambelanayo (amasuntswana amancinci) kwi-mortar yesamente.
Ekwakhiweni kwe-adhesive yethayile, ukuqinisekisa ukhuseleko kunye nokusebenza kakuhle, kufuneka ngokukodwa ukuba i-mortar ibe nexesha elide lokuvula kunye nokusebenza okungcono kokulwa nokutyibilika, kwaye kwangaxeshanye ifuna unxibelelwano oluhle phakathi kwe-substrate kunye nethayile. Ke ngoko, ii-adhesive zethayile zineemfuno eziphezulu ze-MC. Nangona kunjalo, i-MC ngokubanzi inomxholo ophezulu kwii-adhesive zethayile. Xa ukhetha i-MC, ukuze ihlangabezane neemfuno zexesha elide lokuvula, i-MC ngokwayo kufuneka ibe nezinga eliphezulu lokugcina amanzi, kwaye izinga lokugcina amanzi lifuna i-viscosity efanelekileyo, ubungakanani bokongeza kunye nobukhulu be-particle. Ukuze ihlangabezane nokusebenza okuhle kokulwa nokutyibilika, isiphumo sokutyeba se-MC silungile, ukuze i-mortar ibe nokumelana okuqinileyo kokuhamba ngokuthe nkqo, kwaye ukusebenza kokutyeba kuneemfuno ezithile kwi-viscosity, i-etherification degree kunye nobukhulu be-particle.
4.4 Udaka oluzilinganiselayo
I-self-leveling mortar ineemfuno eziphezulu ekusebenzeni kwe-leveling mortar, ngoko ke kufanelekile ukukhetha iimveliso ze-cellulose ether ezine-viscosity ephantsi. Ekubeni i-self-leveling ifuna ukuba i-mortar evuselelwe ngokulinganayo ikwazi ukuhlanjwa ngokuzenzekelayo emhlabeni, kufuneka ukugeleza kunye nokumpompa, ngoko ke umlinganiselo wamanzi kwizinto mkhulu. Ukuze kuthintelwe ukopha, i-MC iyadingeka ukulawula ukugcinwa kwamanzi kumphezulu kwaye ibonelele nge-viscosity ukuthintela ukubola.
4.5 Udaka lokwakha
Ngenxa yokuba udaka lokwakha ludibana ngqo nomphezulu wodaka, ngokubanzi lulwakhiwo olunobukhulu obuqinileyo. Udaka luyimfuneko ukuba lusebenze kakuhle kwaye lugcine amanzi, kwaye lunokuqinisekisa amandla okubopha kunye nodaka, luphucule ukusebenza kakuhle, kwaye lonyuse ukusebenza kakuhle. Ke ngoko, i-MC ekhethiweyo kufuneka ikwazi ukunceda udaka ukuphucula ukusebenza okungentla, kwaye i-viscosity ye-cellulose ether akufuneki ibe phezulu kakhulu.
4.6 Uludaka lokuvala ubushushu
Ekubeni i-thermal insulation slurry isetyenziswa kakhulu ngesandla, kufuneka ukuba i-MC ekhethiweyo inike i-mortar amandla okusebenza kakuhle, amandla okusebenza kakuhle kunye nokugcinwa kwamanzi okuhle kakhulu. I-MC kufuneka ibe neempawu ze-viscosity ephezulu kunye nokungena komoya okuphezulu.
5 Isiphelo
Imisebenzi ye-cellulose ether kwi-samente mortar kukugcina amanzi, ukuqina, ukungenisa umoya, ukulibaziseka kunye nokuphucula amandla e-tensile bond, njl.
Ixesha lokuposa: Jan-30-2023