I-cellulose ether yeyona nto isetyenziswa ngokuqhelekileyo kumgubo wodaka owomileyo. I-ether ye-cellulose idlala indima ebalulekileyo kwi-powder mortar eyomileyo. Emva kokuba i-cellulose ether kwi-mortar ichithwe emanzini, umphumo osebenzayo we-cementitious material kwi-system uqinisekisiwe ngenxa yomsebenzi ongaphezulu. Njenge-colloid ekhuselayo, i-cellulose ether "igoqa" iincinci eziqinileyo kwaye yenze ifilimu yokuthambisa kwindawo yayo yangaphandle, eyenza inkqubo yodaka ibe yinto ezinzileyo kwaye iphucule umbane kunye nokuzinza kodaka ngexesha lokuxuba. Ukuguda kolwakhiwo. Ngenxa yesakhiwo sayo se-molekyuli, isisombululo se-cellulose ether senza amanzi kumdaka angabi lula ukulahleka, kwaye ngokuthe ngcembe akhuphe ixesha elide, enikezela udaka ngokugcina amanzi kunye nokusebenza kakuhle. Ukugcinwa kwamanzi kwe-cellulose ether yeyona nto ibalulekileyo kwaye isisiseko. Ugcino lwamanzi lubhekiselele kumyinge wamanzi agcinwe ngudaka olusandul’ ukuxutywa kwisiseko sokufunxa emva kwesenzo se-capillary. Uvavanyo lokugcinwa kwamanzi lwe-cellulose ether okwangoku alukho iindlela zokuvavanya ezifanelekileyo kweli lizwe, kwaye abavelisi ngokuqhelekileyo ababoneleli ngeeparitha zobugcisa, ezizisa ukuphazamiseka kubasebenzisi ekusebenziseni kunye nokuvavanya. Ngokubhekiselele kwiindlela zokuvavanya zezinye iimveliso, ezi zilandelayo ze-cellulose ethers zishwankathelwe Indlela yokuvavanya ukugcinwa kwamanzi yingxoxo.
1. Indlela yokumpompa ngevacuum
Ukufuma kwi-slurry emva kokuhluzwa kokufunxa
Indlela ibhekisela kwi-JC / T517-2005 "Plastering Gypsum" yoshishino olusemgangathweni, kwaye indlela yokuvavanya ibhekisela kumgangatho wokuqala waseJapan (JISA6904-1976). Ngethuba lovavanyo, gcwalisa i-funnel ye-Buchner ngodaka oluxutywe namanzi, lubeke kwibhotile yokucoca ukufunxa, qalisa impompo yokucoca, kunye ne-20 imizuzu phantsi koxinzelelo olubi lwe (400±5) mm Hg. Emva koko, ngokwenani lamanzi kwi-slurry ngaphambi nangemva kokuhluzwa kwe-suction, bala izinga lokugcinwa kwamanzi ngolu hlobo lulandelayo.
Ugcino lwamanzi (%)=ukufuma okuludaka emva kokufunxa ukuhluzwa/ukufuma okuludaka phambi kokuhluzwa kokufunxa)KX)
Indlela yokucoca ichanekile ngakumbi ekulinganiseni izinga lokugcinwa kwamanzi, kwaye impazamo incinci, kodwa ifuna izixhobo ezikhethekileyo kunye nezixhobo, kwaye utyalo-mali lukhulu kakhulu.
2. Indlela yephepha lokucoca
Indlela yephepha lokucoca kukugweba ukugcinwa kwamanzi kwi-ether ye-cellulose ngokufunxwa kwamanzi kwephepha lokucoca. Iqulethwe ngundo wokuvavanya intsimbi enobude obuthile, iphepha lokucoca kunye nepleyiti yokuxhasa iglasi. Kukho iileya ezi-6 zephepha lokucoca phantsi komngundo wovavanyo, umaleko wokuqala liphepha lokucoca elikhawulezayo, kwaye i-5 eseleyo liphepha lokucoca elicothayo. Sebenzisa ibhalansi echanekileyo yokulinganisa ubunzima be-pallet kunye neengqimba ezi-5 zephepha lokucoca elicothayo kuqala, uthele udaka kwi-mold yokuvavanya emva kokuxuba kunye nokukrazula, kwaye uvumele ukuba ume imizuzu eyi-15; uze ke ukale ubunzima bepalethi kunye nee maleko ezi-5 zobunzima bephepha lokucoca olucothayo. Ibalwe ngokwefomula ilandelayo:
M=/S
M—ilahleko yamanzi, g/nm?
ubunzima be-nu_pallet + 5 iileya zephepha lokucoca elicothayo; g
m2_ Ubunzima bepallet + 5 iileya zephepha elicothayo lokucoca emva kwemizuzu eyi-15; g
S_area isitya kungundo trial?
Unako kwakhona ukujonga ngokuthe ngqo iqondo lokufunxa kwamanzi kwephepha lokucoca, okukhona usezantsi ukufunxwa kwamanzi kwiphepha lokucoca, ngcono ukugcinwa kwamanzi. Indlela yokuvavanya kulula ukuyisebenzisa, kwaye amashishini ngokubanzi angahlangabezana neemeko zovavanyo.
3. Indlela yokuvavanya ixesha lokumisa umphezulu:
Le ndlela inokubhekisa kwi-GB1728 "Ukumiselwa kwexesha lokomisa iFilimu yePeyinti kunye neFilimu yePutty", ukukrazula udaka olushukumayo kwibhodi yesamente yeasbestos, kwaye ulawule ubukhulu be-3mm.
Indlela yoku-1: indlela yebhola yekotoni
Beka ngobunono ibhola yomqhaphu efunxayo kumphezulu wodaka, kwaye ngamaxesha aqhelekileyo, sebenzisa umlomo wakho ukugcina ibhola yomqhaphu i-10-15 intshi kude nebhola yomqhaphu, kwaye uvuthele ngobunono ibhola yomqhaphu kwicala elithe tye. Ukuba inokuvuthelwa kude kwaye akukho ntambo yomqhaphu eshiywe kumphezulu wodaka, umphezulu uthathwa njengowomileyo, ixesha elide lekhefu, ngcono ukugcinwa kwamanzi.
Indlela yesibini, indlela yokubamba umnwe
Chukumisa ngobunono ubuso bomdaka ngeminwe ecocekileyo ngamaxesha aqhelekileyo. Ukuba ivakalelwa yinto encinci, kodwa akukho mdaka emnweni, kunokuqwalaselwa ukuba umphezulu womile. Ukuba lide ixesha lekhefu, kokukhona kungcono ukugcinwa kwamanzi.
Ezi ndlela zingasentla, indlela yephepha lokucoca kunye nendlela yokuchukumisa umnwe isetyenziswa ngokuqhelekileyo kwaye ilula; abasebenzisi banokugweba kwangaphambili umphumo wokugcina amanzi we-cellulose ether ngokusebenzisa iindlela ezingentla.
Ixesha lokuposa: Feb-14-2023