Cellulose ether ndiyo inonyanya kushandiswa kuwedzera muvhu rakaoma dhaka. Cellulose ether inoita basa rinokosha muvhu rakaoma dhaka. Mushure mokunge cellulose ether mumatope yakanyungudutswa mumvura, kushanda kwesementitious zvinhu muhurongwa kunovimbiswa nekuda kwebasa repamusoro. Sechidziviriro colloid, cellulose ether "inoputira" zvimedu zvakasimba uye inoumba firimu yemafuta pamusoro pekunze kwayo, iyo inoita kuti dhaka rigadzikane uye rinovandudza fluidity uye kugadzikana kwevhu panguva yekusanganiswa. Kupfava kwekuvaka. Nekuda kwechimiro chayo chemorekuru, iyo cellulose ether mhinduro inoita kuti mvura iri mudhaka isave nyore kurasikirwa, uye zvishoma nezvishoma inoiburitsa kwenguva yakareba, ichipa dhaka nekuchengetedza mvura kwakanaka uye kushanda. Kuchengetwa kwemvura ye cellulose ether ndiyo inonyanya kukosha uye yakakosha chiratidzo. Kuchengetedzwa kwemvura kunoreva huwandu hwemvura inochengetwa nedhaka richangobva kusanganiswa pagadziko rinosveta mushure mekuita kwecapillary. Muedzo wekuchengetedza mvura we cellulose ether parizvino hauna nzira dzekuyedza dzakakodzera munyika, uye vagadziri kazhinji havape tekinoroji paramita, izvo zvinounza kusagadzikana kune vashandisi mukushandisa uye kuongorora. Tichitaura nezve nzira dzekuedza dzezvimwe zvigadzirwa, anotevera cellulose ether anopfupikiswa Iyo yekuyedza nzira yekuchengeta mvura ndeyekukurukurirana.
1. Vacuum kupomba nzira
Kunyorova mumatope mushure mekusefa
Iyo nzira inoreva iyo JC/T517-2005 "Plastering Gypsum" indasitiri chiyero, uye nzira yekuyedza inoreva iyo yekutanga chiyero cheJapan (JISA6904-1976). Panguva yekuyedzwa, zadza funnel yeBuchner nedhaka yakasanganiswa nemvura, woiisa pabhodhoro rekusveta sefa, tanga vacuum pombi, uye sefa kwemaminetsi makumi maviri pasi pekumanikidza kwakashata kwe (400±5) mm Hg. Zvadaro, maererano nehuwandu hwemvura mune slurry isati yasvika uye shure kwekutsvaira, verenga chiyero chekuchengetedza mvura sezvinotevera.
Kuchengeta mvura (%)=unyoro muslurry mushure mekusveta kusefa/unyoro muslurry isati yasvetwa sefa)KX)
Iyo nzira yevacuum yakanyatso kuyera chiyero chekuchengetedza mvura, uye chikanganiso idiki, asi chinoda zvakakosha zviridzwa uye midziyo, uye mari yacho yakakura.
2. Sefa mapepa nzira
Iyo sefa yebepa nzira ndeyekutonga kuchengetwa kwemvura ye cellulose ether nekutorwa kwemvura kwesefa bepa. Iyo inoumbwa nesimbi ring test mold ine humwe hurefu, sefa bepa uye girazi rekutsigira ndiro. Pane 6 akaturikidzana epepa resefa pasi peyedzo mold, yekutanga layer inokurumidza kusefa bepa, uye mashanu asara mapeji anononoka kusefa. Shandisa chiyero chechokwadi kuyera uremu hwepallet uye 5 zvidimbu zveanononoka sefa mapepa kutanga, dururira dhaka mukati mebvunzo mold mushure mekusanganisa uye kuikwesha yakatsetseka, uye rega imire kwemaminitsi gumi nemashanu; wozoyera huremu hwepallet uye zvikamu zvishanu zvehuremu hwepepa resefa rinononoka. Yakaverengerwa maererano neinotevera formula:
M=/S
M—kurasikirwa nemvura, g/nm?
uremu hwe nu_pallet + 5 zvidimbu zvepepuru inononoka; g
m2_ Huremu hwepallet + 5 zvidimbu zveanononoka sefa mapepa mushure memaminitsi gumi nemashanu; g
S_area dish yekuedza mold?
Iwe unogona zvakare kuona zvakananga dhigirii rekunyudzwa kwemvura kwepepa resefa, kudzikisa kunyura kwemvura kwepepa resefa, zviri nani kuchengetedza mvura. Iyo nzira yekuyedza iri nyore kushanda, uye mabhizinesi akajairwa anogona kusangana nemamiriro ekuyedza.
3. Pamusoro pekuomesa nguva yekuyedza nzira:
Iyi nzira inogona kureva GB1728 "Kutsunga Kwekuomesa Nguva yePaint Firimu uye Putty Firimu", kukwenya dhaka rakamutswa pabhodhi reasbestos simende, uye kudzora ukobvu pa3mm.
Nzira 1: nzira yekotoni bhora
Zvinyoro nyoro isa bhora redonje rinonyudza pamusoro pedhaka, uye nguva nenguva, shandisa muromo wako kuchengetedza bhora rekotoni 10-15 inches kure nebhora redonje, uye zvinyoro pfupfudza bhora redonje nenzira yakachinjika. Kana ichigona kupeperetswa uye pasina shinda yekotoni yasara pamusoro pevhu, iyo nzvimbo inonzi yakaoma, iyo yakareba nguva yenguva, zviri nani kuchengetedza mvura.
Nzira yechipiri, munwe kubata nzira
Bata zvinyoro pamusoro pevhu neminwe yakachena nguva nenguva. Kana ichinzwa zvishoma, asi pasina dhaka pamunwe, inogona kufungidzirwa kuti nzvimbo yacho yakaoma. Kurebesa nguva yenguva, zviri nani kuchengetedza mvura.
Nzira dziri pamusoro apa, nzira yekusefa mapepa uye nzira yemunwe yekubata ndiyo inonyanya kushandiswa uye iri nyore; vashandisi vanogona kutanga kutonga kuchengetwa kwemvura kweselulosi ether kuburikidza nenzira dziri pamusoro.
Nguva yekutumira: Feb-14-2023