Chii chinonzi kuchengetwa kwemvura kwemethyl cellulose ether (MC)

Chii chinonzi kuchengetwa kwemvura kwemethyl cellulose ether (MC)

Mhinduro: Chiyero chekuchengetedza mvura ndicho chimwe chezviratidzo zvakakosha zvekuyera kunaka kwemethyl cellulose ether, kunyanya mumucheka wakaonda wekugadzira simenti-based uye gypsum-based mortar. Kuwedzerwa kuchengetedza kwemvura kunogona kudzivirira zvinobudirira chiitiko chekurasikirwa kwesimba uye kuputika kunokonzerwa nekunyanya kuomesa uye kusakwana hydration. Kuchengetedzwa kwemvura kwakanakisa kwemethyl cellulose ether pasi pemamiriro ekushisa kwakanyanya ndechimwe chezviratidzo zvakakosha kusiyanisa kushanda kwemethyl cellulose ether. Mumamiriro ezvinhu akajairwa, methyl cellulose ethers yakawanda inoderedza kuchengetwa kwemvura sezvo tembiricha inokwira. Kana kutonhora kuchikwira kusvika ku40 ° C, kuchengetwa kwemvura kwekazhinji methyl cellulose ethers kwakaderedzwa zvikuru, iyo inonyanya kukosha munzvimbo dzinopisa uye dzakaoma Uye kuvakwa kwakaonda-kumativi ezuva muzhizha kuchava nemigumisiro yakakomba. Nekudaro, kugadzira kushaikwa kwekuchengetwa kwemvura kuburikidza nechiyero chepamusoro kuchaita kuti viscosity yakakwira yezvinhu nekuda kweiyo dosage yakakwira, izvo zvinokonzeresa kusagadzikana pakuvaka.

Kuchengetwa kwemvura kwakakosha zvakanyanya kukwidziridza kuomarara kwemaitiro emamineral gelling system. Pasi pechiito che cellulose ether, mvura inoburitswa zvishoma nezvishoma kuenda kunheyo yepasi kana mhepo kwenguva yakareba, nekudaro kuve nechokwadi chekuti simenti (samende kana gypsum) ine nguva yakareba yakakwana yekudyidzana nemvura uye zvishoma nezvishoma kuoma.

Ndeapi maitiro emethyl cellulose ether?

Mhinduro: Chete chidimbu chemethyl cellulose ether chinowedzerwa, uye iyo chaiyo yekushanda yegypsum mortar ichavandudzwa zvakanyanya.

(1) Chinja kuwirirana

Methyl cellulose ether inoshandiswa seyakakora kugadzirisa kuenderana kwehurongwa.

(2) Chinja kudiwa kwemvura

Mune gypsum mortar system, kudiwa kwemvura chinhu chakakosha parameter. Chinhu chakakosha chemvura chinodiwa, uye yakabatana nedhaka kubuda, zvinoenderana nekugadzirwa kwegypsum mortar, kureva kuwanda kwe limestone, perlite, nezvimwe. Iko kubatanidzwa kwemethyl cellulose ether kunogona kunyatso gadzirisa kudiwa kwemvura uye dhaka kubuda kwegypsum mortar.

(3) Kuchengeta mvura

Kuchengetwa kwemvura kwemethyl cellulose ether, munhu anogona kugadzirisa nguva yekuvhura uye coagulation process yegypsum mortar system, kuitira kuti agadzirise nguva yekushanda yehurongwa; iyo miviri yemethyl cellulose ether inogona kusunungura mvura zvishoma nezvishoma kwenguva yakareba Kukwanisa kunyatsoita kusungirirana pakati pechigadzirwa uye substrate.

(4) Gadzirisa rheology

Kuwedzerwa kwemethyl cellulose ether kunogona kunyatsogadzirisa rheology yeplastering gypsum system, nekudaro ichivandudza mashandiro ekushanda: iyo gypsum mortar ine zvirinani kushanda, zvirinani anti-sag performance, hapana kunamatira nematurusi ekuvaka uye yakakwirira pulping performance, nezvimwe.

Nzira yekusarudza yakakodzera methyl cellulose ether?

Mhinduro: Methyl cellulose ether zvigadzirwa zvine hunhu hwakasiyana zvichienderana neiyo etherification nzira, dhigirii etherification, viscosity yeaqueous solution, zvinhu zvemuviri senge particle fineness, solubility maitiro uye nzira dzekugadzirisa. Kuti uwane mashandisiro akanakisa, zvinodikanwa kuti usarudze mhando chaiyo ye cellulose ether kune akasiyana masimidhi ekushandisa, uye yakasarudzwa mhando yemethyl cellulose ether inofanirwa kuenderana neyedhaka system inoshandiswa.

Methyl cellulose ethers inowanikwa mune akasiyana viscosities kuti ienderane nezvinodiwa zvakasiyana. Methyl cellulose ether inogona kungoita basa mushure mekunyungudutswa, uye chiyero chayo chekunyungudika chinofanira kuchinjirwa kumunda wekushandisa uye maitiro ekuvaka. Iyo yakanaka poda chigadzirwa chakakodzera kune yakaoma-yakasanganiswa dhaka masisitimu (senge spray plastering plaster). Izvo zvakanyanya kunaka zvimedu zvemethyl cellulose ether zvinogona kuve nechokwadi chekukurumidza kupera, kuitira kuti kuita kwayo kwakanakisa kugone kushandiswa zvinobudirira munguva pfupi mushure mekuumbwa kwedhaka rakanyorova. Inowedzera kuwirirana uye kuchengetwa kwemvura kwedhaka munguva pfupi. Ichi chimiro chinonyanya kukodzera kuvakwa kwemagetsi, nokuti kazhinji, nguva yekusanganiswa kwemvura uye yakaoma-musanganiswa wedhaka ipfupi zvikuru panguva yekugadzira michina.

Chii chinonzi kuchengetwa kwemvura kwemethyl cellulose ether?

Mhinduro: Kunyanya kukosha kwekuita kwemagiredhi akasiyana emethyl cellulose ether (MC) ndiko kugona kwavo kuchengetedza mvura mukuvaka masisitimu. Kuti uwane kushanda kwakanaka, zvinodikanwa kuchengetedza hunyoro hwakakwana mudhaka kwenguva yakareba. Nekuda kwekuti mvura inoshanda semafuta uye inonyungudutsa pakati pezvinhu zvisingaoneki, dhaka rakatetepa rinogona kuiswa makadhi uye dhaka rakapurasitwa rinogona kuparadzirwa nematrowel. Madziro emadziro kana mataira haafanire kuve akanyorova mushure mekushandisa cellulose ether-yakawedzera dhaka. Saka MC inogona kuunza nekukurumidza uye nehupfumi mhedzisiro yekuvaka.

Kuti uise, zvinhu zvesimende senge gypsum zvinoda kuvezwa nemvura. Huwandu hunonzwisisika hweMC hunogona kuchengetedza hunyoro mudhaka kwenguva yakareba yakakwana, kuitira kuti kuseta uye kuomesa maitiro kuenderere mberi. Huwandu hweMC hunodiwa kuti uwane yakakwana yekuchengeta mvura hunoenderana nekunyura kwechigadziko, kuumbwa kwedhaka, ukobvu hwedhaka redhaka, kudiwa kwemvura kwedhaka, uye nguva yekumisikidzwa kwesimende.

Iyo yakanyanya kunaka saizi ye MC, iyo inokurumidza kukora dhaka.