Cellulose ethers rudzi rwepolymer inonyungudika mumvura inoumbwa mushure mekushandurwa kwemakemikari e cellulose. Inoshandiswa zvakanyanya muzvinhu zvekuvaka, kunyanya kana ikashandiswa mudura ine mhedzisiro yakakosha.
Hunhu hwekutanga hwe ethers dze cellulose
Cellulose ethers imhando yepolymer inowanikwa nekushandisa makemikari e cellulose yechisikigo. Ma ether e cellulose anowanzo sanganisira hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), carboxymethylcellulose (CMC) nezvimwewo. Ane kugona kunyungudika uye kukora zvakanaka, uye anogona kugadzira mhinduro dzakafanana uye dzakagadzikana dze colloidal mumvura. Izvi zvinoita kuti cellulose ethers dzishandiswe zvakanyanya mukuvaka.
Hunhu hukuru hwe ethers dze cellulose hunosanganisira:
Kukora: kunogona kuwedzera zvakanyanya viscosity yemasisitimu emvura.
Kuchengeta mvura: Inokwanisa kuchengetedza mvura zvakanyanya uye inogona kudzivirira kuti mvura isarasika panguva yekuvaka.
Hunhu hwekugadzira firimu: Inogona kugadzira firimu rakafanana pamusoro pechinhu kuti chidzivirire uye chiwedzere kunaka kwacho.
Kunyorova: Kunovandudza mashandiro ekuvaka kwedhaka, zvichiita kuti zvive nyore kuisa uye kugadzira chimiro.
Basa guru re cellulose ether mudura
Basa re cellulose ether mudura rinonyanya kuratidzwa muzvinhu zvinotevera:
1. Kuvandudza kuchengetwa kwemvura
Mortar inowanzo rasikirwa nesimba uye matambudziko ekutsemuka nekuda kwekurasikirwa nemvura panguva yekuvaka. Cellulose ether ine mukana wakanaka wekuchengetedza mvura uye inogona kugadzira network structure mumortar kuti ivhare hunyoro uye ideredze kubuda kwemvura nekurasikirwa, nokudaro ichivandudza kuchengetedza mvura mumortar. Izvi hazvingoiti kuti mortar irambe ichivhurwa chete, asiwo zvinoita kuti mortar ive nemvura yakakwana panguva yekuoma kwayo, zvichiwedzera simba rayo nekugara kwenguva refu.
2. Kuvandudza mashandiro ekuvaka
Kurovera kwe cellulose ether kunoita kuti dhaka rive rakapfava panguva yekuvaka, zvive nyore kuisa nekupararira, uye zvinovandudza kushanda zvakanaka kwekuvaka. Panguva imwe chete, hunhu hwekukora kwe cellulose ether hunoita kuti dhaka rive nethixotropy yakanaka, kureva kuti, rinova rakatetepa kana rikachekwa simba uye rinodzokera kuhunhu hwaro hwepakutanga mushure mekunge simba rekuchekwa rapera. Hunhu uhwu hunoita kuti dhaka risanyanya kudonha panguva yekuvaka uye kuchengetedza chimiro chakanaka chekuvaka.
3. Wedzera kunamira kwedhaka
Cellulose ether inogona kugadzira network yakafanana mumota, kuwedzera simba rekunamira remota, uye kunatsiridza kunamira kwayo kune substrate. Izvi zvinogona kudzivirira mota kuti isaparadzaniswe nezvinhu zvepasi panguva yekuoma uye kuderedza kuitika kwematambudziko emhando yepamusoro akadai sekuora kwevhu nekudonha.
4. Kuvandudza kusimba kwekuputika kwematombo
Hunhu hwe cellulose ether hunogadzira firimu hunoita kuti dhaka riite firimu rakatetepa pamusoro panguva yekuoma, izvo zvinoita basa rekudzivirira uye zvinoderedza kukanganiswa kwekunze kwedhaka. Panguva imwe chete, kuchengetedza mvura uye kukora kwayo zvinogonawo kuderedza kupwanyika kwematombo kunokonzerwa nekurasikirwa nemvura mudhaka uye kuvandudza kuramba kwayo kupwanyika.
Migumisiro chaiyo ye cellulose ethers pahunhu hwedhaka
Kukanganiswa kwakanangana kwe cellulose ether pakushanda kwedhaka kunogona kuongororwa zvakadzama kubva pazvinhu zvinotevera:
1. Kugona kushanda
Mortar inowedzerwa ne cellulose ether inoshanda zviri nani pakushanda kwayo. Kuchengeta kwayo mvura uye mafuta ayo zvakanaka zvinoita kuti mortar ive yakapfava panguva yekuvaka, ive nyore kushandisa, uye ive nyore kugadzira. Panguva imwe chete, kukora kwe cellulose ether kunogona kuvandudza thixotropy yemortar, kuitira kuti mortar igone kuchengetedza chimiro chayo zvakanaka panguva yekuvaka uye haisi nyore kudonha nekudonha.
2. Simba
Kuchengetwa kwemvura kwe cellulose ether kunogonesa dhaka kuchengetedza hunyoro hwakakwana panguva yekuoma, kukurudzira hydration reaction yesimende, uye kuumba chimiro chemvura chakasimba, nokudaro zvichivandudza simba redhaka. Pamusoro pezvo, kugoverwa kwakafanana uye kubatana kwe cellulose ether kunogonawo kuita kuti chimiro chemukati chedhaka chigadzikane, kuderedza kuitika kwe micro-cracks, uye kuvandudza simba rose.
3. Kugara kwenguva refu
Nekuti cellulose ether inogona kuchengetedza hunyoro mumota, mota inogona kugadzira chimiro chakafanana panguva yekuoma, ichideredza kuwanda kwematombo, nokudaro ichivandudza kugara kwenguva refu kwemota. Firimu rinogadzirwa ne cellulose ether rinogonawo kuchengetedza pamusoro pemota kusvika pamwero wakati, kuderedza kuputsika kwemota nekunze, uye kuwedzera kugara kwayo kwenguva refu.
4. Kuchengetwa kwemvura uye kuramba kutsemuka
Cellulose ether inogona kuvandudza zvakanyanya kuchengetwa kwemvura mudhaka, zvichiita kuti dhaka rirambe rakakwana panguva yekuoma uye kuderedza kuitika kwekutsemuka kwetsandanyama. Pamusoro pezvo, hunhu hwekugadzira firimu hwe cellulose ether hunoita kuti dhaka rigadzire firimu rinodzivirira pamusoro, zvichideredza kukanganiswa kwekunze kwedhaka uye kuvandudza kuramba kwaro kutsemuka.
Kushandiswa kwe cellulose ether mumortar kune mhedzisiro yakakosha. Kuchengeta kwayo mvura zvakanaka, kukora, kugadzira firimu uye kunyorova kwakavandudza zvakanyanya mashandiro ekuvaka, simba, kugara kwenguva refu nezvimwe zvinhu zvemortar. Nokudaro, cellulose ether, sechinhu chakakosha chekuwedzera, yave ichishandiswa zvakanyanya muzvishandiso zvemazuva ano zvekuvaka uye yave nzira yakakosha yekuvandudza mashandiro emortar.
Nguva yekutumira: Chikunguru-12-2024