Desguzation gypsum gasi rinogadzirwa neyekurohwa kweSarufa-ine mafuta ekuchenesa yezvisikwa zvekuvaka gypsum. Naizvozvo, kune zvimwe zvinowanikwa uye zvinoshandiswa nekushandisa kushungurudzika gypsum panzvimbo yemasikirwo eGypsum kuti uburitse kuzvimiririra. Organic Polymer Admixtures akadai semagetsi achideredza mumiririri, mvura inochengetedza mumiririri uye kudzoreredza zvinhu zvakakosha zvinoshanda muzvinyorwa zvekuzvimanikidza. Kubatanidzwa uye maitiro ezviviri nezvinhu zvekumisikidza zvinhu zvinetso zvakakodzera kutariswa. Nekuda kwehunhu hwegadziriro yekuumbwa, iyo yakajeka yekushambadzira gypsum idiki (saizi yehukuru inonyanya kugoverwa pakati pe40 neyekutsamwa Slurry yakagadzirirwa naRinowanzo kuve nyore kusarudzika, kugadzikana uye kubuda ropa kuitika. Cellulose ether ndiyo inonyanya kushandiswa kushandiswa mudhiri, uye yakasanganiswa yekushandiswa nekudzora kwemvura muruvimbiso yekuzvidzivirira kwezvinhu zvakashata
Muro pepa iri, kukosha kwehunhu kunoshandiswa seyakagadziriswa index (kuparadzira degree 145 mm ± 5 mm) -kushandisa zvinhu, kurasikirwa kwekunyepedzera nekufamba kwenguva, uye kuwanda kwemutemo wekushandura kwenzvimbo dzekutanga dzakadai senguva uye yekutanga michina. Panguva imwecheteyo, edza mutemo wekushandura cellulose kusunungurwa nekushambadzira kwehykuwedzera kwehykukwana .
1. Zvishandiso zvekushandisa uye nzira dzekuyedza
1.1 zvinhu zvakagadzirwa
Gypsum Powder: Ashamwarti Gypsum Poda inogadzirwa nekambani muTangshan, iyo huru yemaminerari manyoro ndeyeHegahydrate Gypsum, kuumbwa kwayo kwemakemikari kunoratidzwa muTafura 1, uye zvivakwa zvaro zvepanyama zvinoratidzwa muTafura 2.
mufananidzo
mufananidzo
Admixture inosanganisira: cellulose ether (hydroxyprupyl methylcellose, hpmc kwenguva pfupi); Superplasticastizer WR; defoamer B-1; Eva Raderedzwa Latex Poda S-05, zvese zviri zviripo.
Aggregate: Sangano rerwizi rweRwizi rweRwizi, rakagadzirwa nejecha rakanaka rakanyoroveswa kuburikidza ne1.6 mm sieve.
1.2 bvunzo nzira
Yakagadziriswa Desulfutization Gypsum: Sand: Mvura = 1: 0.5: ) 0, 0.5 ‰, 1,0 ‰, 2.0 ‰, 3.0 ‰ Cellulose ether (Hpmc-zviuru makumi maviri); Kuenderera mberi gadzirisa dosage ye cellulose e, sarudza HPMC-zviuru makumi maviri, HPMC-105,000 ProhylEllose ), kudzidza iyo dosage uye suremu (viscosity kukosha) kwemheremellose inosimbisa maitiro ezvivakwa zveGypsum Darm, uye pesvedzero yeiyo fluidity, yekuisa nguva uye yekutanga michina ye Iyo yakashambadzwa gypsum yekuzvimiririra marara musanganiswa unokurukurwa. Iyo chaiyo bvunzo nzira inoitwa zvinoenderana nezvinodiwa neGB / T 17669.3-1999 "Kutsunga kweMuchina Zvivakwa zveGypsum".
Kupisa kwehydration bvunzo kunoitwa uchishandisa sampuli isina gakava uye samples ine cellulose echitatu
2. Mhedzisiro uye kuongororwa
2.1 Mhedzisiro ye cellulose ether zvirimo pane zvakakosha zvivakwa zve moter
Nekuwedzera kwezvemukati, kubatikana uye kubatana kwedhaka zvakanyatsogadziriswa, kurasikirwa kwekunyepedzera nekufamba kwenguva kwakaderedzwa zvakanyanya, uye kuita kwakaomarara kwakanakisa, uye kuseka kwakaomarara hakuna kutsvedza, uye kusekwa kwemusoro, Kuseka uye aesthetics yakagadziridzwa kwazvo. Panguva imwecheteyo, iyo mvura yekudhara yemutema kuti izadzise iyo imwecheteyo fluidity yakawedzera zvakanyanya. At 5 Iyo yekutanga michina yekugadzira yemutumbi yakaderera zvakanyanya nekuwedzera kwezvinhu zvemukati meruculose ether. Kana zvirimo zve cellulose e Simba rekumanikidza ndeye 39.47% uye 23.45% yemuenzaniso usina chinhu zvakateerana. Zvakakosha kuziva kuti nekuwedzera kwehuwandu hwemutauriri wemvura, kubva kuhuwandu hwehudyu zvakare hwakadzikira zvakanyanya, kubva muna 2069 kg / m3 kusvika 1747 kg / m3 na5 ‰, kuderera kwe1.56%. Iko kushambadzira kweiyo motsi kunoderera uye iko kupokana kunowedzera, ndechimwe chezvikonzero zvekudzikira kuri pachena mune zvekuita muchina chemuchina.
Cellulose ether is a-ionic polymer. Mapoka eHydroxyl ari muCellulose Ether Coms uye maatomu eOthensi pane iyo Ether Bond inogona kuunganidza mabhandi eHydrogen, kutendeukira mvura yakasungwa mumvura, nekudaro ichitamba basa rekuchengeta mvura. Macroscopically inoratidzwa seinowedzera mukubatana kweiyo slurry [5]. Kuwedzera kweVanhu vechiSleurry hakuzowedzera mvura yemvura, asi zvakare yakanyungudutswa constulose ether ichashambadzirwa pamusoro peiyo gypsum zvimedu, ichitadzisa hydration yekuita uye yekuwedzera nguva yekugara; Munguva yekukurudzira, huwandu hukuru hwemhepo hubbles huchaunzwawo. VOIDS ichaumba seyakaomarara, pakupedzisira ichidzora simba remufungo. Inonzwisisika kufunga kwemvura isingazivikanwe yemvura musanganiswa, kuita zvekugadzira, kugadzirisa nguva uye kufungidzira kwemheremesi
2.2 mhedzisiro yemanyorerwe uremu hwe cellulose ether pane kuitwa kwemutumbi
Kazhinji, yakakwira visikopa uye iyo yakanakisa iyo yakajeka ye cellulose ether, iri nani kuchengetwa kwemvura uye kuwedzera simba rekubatanidza. kuita kuchakanganiswa zvisina kunaka. Naizvozvo, pesvedzero ye cellulose ana vana mitezo yakasiyana yemanyorerwo pazvinhu zvekutanga zvezvinhu zveGypsum-yakavakirwa motokari yekuzvimiririra yakawedzerwa. Iyo yekuda kwemvura yakawedzera kune imwe nhanho, asi yakanga isina mukana uri pachena pane iyo nguva uye fluidity. Panguva imwecheteyo, masimba anoshanduka uye anomanikidza uye anomanikidza mumotokari mune imwe nyika akadzika maitiro, asi kuderera kwacho kwaishayisa pesvedzero yemuteresi ecofical nezvemakambani. Mukupfupikisa, kuwedzera kweiyo molecular uremu hwe cellulose ether haina hutsinye mukuita kwemubhadharo wemauto. Kufunga nezve nyore nyore kuvaka, yakaderera-viscosity uye madiki-molecular-uremu cellulose ether inofanira kusarudzwa seyakawisirwa gypsum-inokonzerwa nekuzvibatanidza zvinhu.
2.3 Mhedzisiro ye cellulose ether pane kupisa kwehydration yeashama gypsum
Nekuwedzera kwezviratidzo zveCellulose ether, iyo Exothermic Peak yeHydration Gypsum zvishoma nezvishoma yakadzikira zvishoma nezvishoma, uye nzvimbo yekupisa kwe hydration yakaderera, asi kwete pachena. Izvi zvinoratidza kuti cellulose ether inogona kunonoka iyo hydration chiyero uye hydration degree redhivha yeiyo gypsum kune imwe nhanho, saka dosage haifanire kunge yakakura, uye inofanira kudzorwa mukati me1 ‰. Zvinogona kuoneka kuti iyo colloidal firimu yakaumbwa mushure mekunge cellulose ether inosangana nemvura inodhindwa pamusoro pehusimbe gypsum zvimedu zveGypsum pamberi pe 2 h. Panguva imwecheteyo, iyo yakasarudzika mvura yekuchengetwa uye inokonzeresa kudzora kwemvura yekubuda kwemvura uye kusagadzikana inobatsira kune imwe hydration yeashama yehuswa mune imwe nhanho. Kuti upedze kumusoro, apo dosi rakakodzera rinodzorwa, cellulose ether ane mashoma pesvedzero pane hydration chiyero uye hydration degree rekushambadzira gypsum pachayo. Panguva imwecheteyo, kuwedzera kwemherombolose ether zvemukati uye molecular uremu huchanyanya kuwedzera viscosity yeiyo slurry uye inoratidza yakanakisa kudzokorora kwemvura. Kuti ave nechokwadi chekunyepedzera kweshungu dzekuzvidza gypsum yekuzvimirira, iyo mvura yemvura ichawedzera zvakanyanya, iyo inokonzerwa nenguva yekugara kwenguva refu. Chikonzero chikuru chekuderera muchimiro chivakwa.
3. Mhedziso
. Kuenzaniswa nezviri mukati, uremu hwemanyorerwe hwemasero ether kuti kuwedzera kwacho kwave kushoma pane izvo zviri pamusoro zvivakwa zvevhu. Kufunga nezvekunzwisisa, cellulose ether kunofanirwa kusarudzwa nehuremu hwemulecular uremu (viscosity kukosha kwakaderera kupfuura 20
(2. Kuwedzera kwemvura uye kuderera kwemvura uye kuderera kwemvura yakawanda ndiwo zvikonzero zvikuru zvekudzikira pazvinhu zvechinhinha zvemakwenzi ezvakashongedzwa gypsum-based frar.
Kutumira Nguva: May-08-2023