Mumakore achangopfuura, nekushandiswa zvishoma nezvishoma kwemitemo yakakodzera yekutevedzera pfungwa yekuvandudza sainzi uye kuvaka nzanga inochengetedza zviwanikwa, dhaka rekuvaka renyika yangu riri kutarisana nekuchinja kubva padhaka rekare kuenda kudhaka rakasanganiswa rakaoma, uye indasitiri yedhaka rakasanganiswa rakaoma rekuvaka yakapinda mukukura nekukurumidza.
Semusanganiswa unonyanya kukosha mukuvaka zvigadzirwa zvemortar zvakasanganiswa zvakaoma, cellulose ether ine basa guru mukushanda uye mutengo wemortar yakasanganiswa zvakaoma. Kune mhando mbiri dze cellulose ethers: imwe ionic, senge sodium carboxymethyl cellulose (CMC), uye imwe isiri ionic, senge methyl cellulose (MC), hydroxyethyl cellulose (HEC), Hydroxypropyl cellulose (HPMC), nezvimwewo.
Parizvino, zvigadzirwa zvakawanda zve ether zvepasi rose zve cellulose zvinoshandiswa mukuvaka. Nekukura nekukurumidza kweindasitiri ye dry-mixed mortar, cellulose ether yenyika yangu yave kugona kuwanikwa munzvimbo yayo, uye mamiriro ezvinhu ezvigadzirwa zvekunze zviri kutonga musika apera. Nekuwedzera kukurumbira kwekushandiswa kwezvigadzirwa zve dry-mixed mortar, nyika yangu ichave mugadziri mukuru we dry-mixed mortar pasi rose, kushandiswa kwe cellulose ether kuchawedzera, uye vagadziri vayo nemarudzi ezvigadzirwa zvichawedzerawo. Kushanda kwechigadzirwa che cellulose ether mu dry-mixed mortar kwave chinhu chinonyanya kutariswa nevagadziri nevashandisi.
Chinhu chinonyanya kukosha che cellulose ether kuchengetedza mvura muzvinhu zvekuvaka. Pasina kuwedzerwa cellulose ether, chidimbu chakatetepa chemortar itsva chinooma nekukurumidza zvekuti simende haigone kunyorova nenzira yakajairika uye mortar haigone kuoma uye kuwana kubatana kwakanaka. Panguva imwe chete, kuwedzerwa cellulose ether kunoita kuti mortar ive ne plasticity yakanaka uye kuchinjika, uye kunovandudza simba rekubatanidza mortar. Ngatitaurei nezvemhedzisiro pakushandiswa kwemortar yakasanganiswa yakaoma kubva pakushanda kwechigadzirwa che cellulose ether.
1. Kupfava kweselulosi
Kupfava kwe cellulose ether kunokanganisa kunyungudika kwayo. Semuenzaniso, kana kupfava kwe cellulose ether kwakaderera, kunyungudika kwayo mumvura nekukurumidza uye kuvandudzwa kwekushanda kwekuchengetedza mvura. Saka, kupfava kwe cellulose ether kunofanirwa kuverengerwa seimwe yehunhu hwayo hwekuongorora. Kazhinji, kupfava kwe sieve ye cellulose ether kunodarika 0.212mm hakufanirwe kupfuura 8.0%.
2. Kuomesa huremu hwekuderedza uremu
Kurema kwekuomesa kunoreva huwandu hwehuremu hwezvinhu zvinorasika muhuremu hwemuenzaniso wekutanga kana cellulose ether yaoma patembiricha yakati. Kune imwe mhando ye cellulose ether, huremu hwekuomesa hwakanyanya kukwira, izvo zvinoderedza huwandu hwezvinhu zvinoshanda mu cellulose ether, zvinokanganisa mashandiro emakambani ari pasi, uye zvinowedzera mutengo wekutenga. Kazhinji, kudzikira kwehuremu pakuomesa cellulose ether hakupfuuri 6.0%.
3. Sulfate ash content ye cellulose ether
Kune imwe mhando ye cellulose ether, huwandu hwedota hwakanyanya kukwira, izvo zvinoderedza huwandu hwezvinhu zvinoshanda mu cellulose ether uye zvinokanganisa mashandiro emakambani ari pasi. Hunhu hwe sulfate ash hwe cellulose ether chinhu chakakosha pakushanda kwayo. Pamwe chete nemamiriro ekugadzirwa aripo evagadziri ve cellulose ether vemunyika yangu, kazhinji huwandu hwedota hweMC, HPMC, HEMC hahufanirwe kudarika 2.5%, uye huwandu hwedota hweHEC cellulose ether hahufanirwe kudarika 10.0%.
4. Kupenya kwe cellulose ether
Kuchengetwa kwemvura uye kusimba kwe cellulose ether kunonyanya kutsamira pakukora uye chiyero che cellulose ether pachayo inowedzerwa kune simende slurry.
5. pH kukosha kwe cellulose ether
Kuwanda kwemidziyo ye cellulose ether kunodzikira zvishoma nezvishoma mushure mekuchengetwa patembiricha yakakwira kana kwenguva yakareba, kunyanya kune michina ine viscosity yakakwira, saka zvakakosha kuganhurira pH. Kazhinji, zvinokurudzirwa kudzora huwandu hwepH ye cellulose ether kusvika pa5-9.
6. Kutapurirana kwechiedza che cellulose ether
Kufambiswa kwechiedza kwe cellulose ether kunokanganisa zvakananga mashandiro ayo muzvinhu zvekuvaka. Zvinhu zvikuru zvinokanganisa kufambiswa kwechiedza kwe cellulose ether ndeizvi: (1) mhando yezvinhu zvakagadziriswa; (2) mhedzisiro ye alkalizing; (3) chiyero chemaitiro; (4) chiyero che solvent; (5) mhedzisiro ye neutralization.
Zvichienderana nekushandiswa, kufambiswa kwechiedza che cellulose ether hakufanirwe kunge kuri pasi pe80%.
7. Kupisa kwegel kwe cellulose ether
Cellulose ether inonyanya kushandiswa se viscosifier, plasticizer uye chinhu chinochengetedza mvura muzvigadzirwa zvesimende, saka viscosity uye tembiricha yegel zviyero zvakakosha kuratidza mhando ye cellulose ether. Tembiricha yegel inoshandiswa kuona rudzi rwe cellulose ether, iyo ine chekuita nehuwandu hwekutsiva mamwe ma cellulose ether. Pamusoro pezvo, munyu nekusachena zvinogonawo kukanganisa tembiricha yegel. Kana tembiricha yemushonga ikakwira, cellulose polymer inorasikirwa nemvura zvishoma nezvishoma, uye viscosity yemushonga inoderera. Kana gel point yasvika, polymer inobviswa mvura zvachose uye inoumba gel. Naizvozvo, muzvigadzirwa zvesimende, tembiricha inowanzo dzorwa pasi petembiricha yekutanga yegel. Pasi pemamiriro aya, tembiricha yakaderera, viscosity yakakwira uye mhedzisiro yekukora uye kuchengetedza mvura inoonekwa zviri pachena.
Nguva yekutumira: Kukadzi-10-2023