Cellulose ether ine mvura yakawandisa inochengetedza mvura, iyo inogona kudzivirira hunyoro mudhaka rakanyorova kuti risatsvedze nguva isati yakwana kana kuti rinyudzwe nehwaro hwepasi, uye inoita shuwa kuti simende yanyorova zvakakwana, nokudaro ichivimbisa hunhu hwemuchina wedhaka, izvo zvinonyanya kubatsira kune dhaka rakatetepa uye hwaro hwepasi hunotora mvura Kana dhaka rakavakwa mumamiriro ekupisa kwakanyanya uye akaoma. Mhedzisiro yekuchengetedza mvura ye cellulose ether inogona kuchinja maitiro ekuvaka echinyakare uye kuvandudza kufambira mberi kwekuvaka. Semuenzaniso, kuvaka plaster kunogona kuitwa pa substrates dzinotora mvura pasina kunyorovesa.
Kuwanda kwemvura, chiyero, tembiricha yemhepo uye chimiro chemamorekuru che cellulose ether zvine simba guru pakushanda kwayo kwekuchengetedza mvura. Mumamiriro akafanana, kukura kwe cellulose ether, ndiko kukura kwekuchengetedza mvura; chiyero chakakwira, ndiko kukura kwekuchengetedza mvura. Kazhinji, huwandu hushoma hwe cellulose ether hunogona kuvandudza zvakanyanya kuchengetedza mvura yemortar. Kana chiyero chasvika pane chimwe Kana chiyero chekuchengetedza mvura chikawedzera, mwero wekuchengetedza mvura unoderera; kana tembiricha yemhepo yakwira, kuchengetedza mvura kwe cellulose ether kunowanzo kudzikira, asi mamwe ma modified cellulose ethers anewo kuchengetedza mvura kuri nani mumamiriro ekupisa kwakanyanya; fibers dzine madhigirii akaderera ekuchinja Vegan ether ine kushanda kuri nani kwekuchengetedza mvura.
Boka rehydroxyl riri pamorekuru ye cellulose ether neatomu yeokisijeni riri pabond ye ether zvichabatana nemorekuru yemvura kuti zvigadzire hydrogen bond, zvichishandura mvura yakasununguka kuita mvura yakasungwa, nokudaro zvichiita basa rakanaka mukuchengetedza mvura; molekyuru yemvura ne cellulose ether molecular chain Interdiffusion inobvumira mamorekuru emvura kupinda mukati me cellulose ether macromolecular chain uye inosangana nemasimba akasimba ekubatanidza, nokudaro ichiumba mvura yakasungwa nemvura yakasungwa, izvo zvinovandudza kuchengetedza mvura kwe cement slurry; cellulose ether inovandudza slurry ye cement itsva. Hunhu hwe rheological, chimiro che porous network uye osmotic pressure kana hunhu hwe cellulose ether hunoita kuti mvura isapararire.
Cellulose ether inopa dhaka rakanyorova viscosity yakanaka kwazvo, izvo zvinogona kuwedzera kugona kwekubatanidza pakati pedhaka rakanyorova nehwaro hwepasi, uye kuvandudza mashandiro edhaka rinodzivirira kudonha. Rinoshandiswa zvakanyanya mudhaka rekupurasita, dhaka rekubatanidza zvidhinha uye sisitimu yekudzivirira madziro ekunze. Kukora kwe ether ye cellulose kunogonawo kuwedzera kugona kwekudzivirira kupararira uye homogeneity yezvinhu zvitsva zvakasanganiswa, kudzivirira kupatsanurwa kwezvinhu, kuparadzaniswa uye kubuda ropa, uye rinogona kushandiswa mu faibha concrete, pasi pemvura concrete uye concrete inozvibatanidza.
Kusimba kwe cellulose ether pazvinhu zvakagadzirwa nesimende kunobva mukusimba kwe cellulose ether solution. Mumamiriro ezvinhu akafanana, kusimba kwe cellulose ether kwakakwira, kusimba kwechinhu chakagadziriswa che simende kunowedzera, asi kana kusimba kwakanyanya, zvinokanganisa kusimba uye kushanda kwechinhu ichi (sekunamira banga rekupurasita). Dura rinozvienzanisa uye kongiri inozvibatanidza, izvo zvinoda kusimba kwakanyanya, zvinoda kusimba kushoma kwe cellulose ether. Pamusoro pezvo, kusimba kwe cellulose ether kuchawedzera kudiwa kwemvura kwezvinhu zvakagadzirwa nesimende uye kuwedzera goho redu.
Kuwanda kwemvura inonyungudika yemushonga we cellulose ether kunoenderana nezvinhu zvinotevera: huremu hwemamorekuru e cellulose ether, kuwanda, tembiricha, mwero wekuchekwa uye nzira yekuyedza. Mumamiriro ezvinhu akafanana, kuwanda kwemvura inonyungudika ye cellulose ether, kuwanda kwemvura inonyungudika; kuwanda kwemvura inonyungudika, kuwanda kwemvura inonyungudika. Paunenge uchiishandisa, chenjerera kudzivirira kuwanda kwemvura uye kukanganisa mashandiro emushonga nekongiri; cellulose ether Kuwanda kwemvura inonyungudika ye ether kuchaderera nekuwedzera kwetembiricha, uye kuwanda kwemvura inonyungudika, kuwanda kwemvura inonyungudika; cellulose ether solution inowanzova mvura yepseudoplastic ine hunhu hwekuchekwa kwemvura, kuwanda kwemvura inonyungudika panguva yekuyedzwa, kuwanda kwemvura inonyungudika kushoma, saka, kubatana kwemushonga kuchaderera pasi pesimba rekunze, izvo zvinobatsira pakuvaka mushonga, kuitira kuti musanganiswa ugone kushanda zvakanaka uye kubatana panguva imwe chete; nekuti mhinduro ye cellulose ether haisi yeNewtonian. Kune mvura, kana nzira dzekuedza, zvishandiso nemidziyo kana nzvimbo dzekuyedza dzinoshandiswa kuyedza viscosity dzakasiyana, mhedzisiro yekuyedza yemhinduro imwechete ye cellulose ether ichave yakasiyana zvikuru.
Mamorekuru e-cellulose ether anogona kugadzirisa mamwe mamorekuru emvura echinhu chitsva pamucheto wecheni yemamorekuru, nokudaro achiwedzera viscosity yemushonga. Maketani emamorekuru e-cellulose ether akabatana kuti aumbe chimiro chenetwork chine mativi matatu, izvo zvinoitawo kuti mhinduro yayo yemvura ive neviscosity yakanaka.
Mhinduro yemvura ine viscosity cellulose ether ine thixotropy yakakwira, iyo inovawo hunhu hukuru hwe cellulose ether. Mhinduro dzemvura dzemethyl cellulose dzinowanzova nepseudoplastic uye non-thixotropic fluidity pasi petembiricha yayo yegel, asi dzinoratidza hunhu hweNewtonian flow pamazinga akaderera ekucheka. Pseudoplasticity inowedzera nehuremu hwemolecular kana huwandu hwe cellulose ether, zvisinei nerudzi rwe substituent uye mwero wekutsiva. Naizvozvo, cellulose ethers dzemhando imwechete ye viscosity, zvisinei nemc, HPmc, HEmc, dzichagara dzichiratidza hunhu hwakafanana hwe rheological chero bedzi huwandu netembiricha zvichiramba zvakagadzikana. Ma gels echimiro anoumbwa kana tembiricha yakwidzwa, uye kuyerera kwakanyanya kwethixotropic kunoitika. Ma ether e cellulose ane viscosity yakakwira uye yakaderera anoratidza thixotropy kunyangwe pasi petembiricha yegel. Hunhu uhwu hunobatsira zvikuru pakugadziriswa kwekuenzana uye kudzikira mukuvaka mortar yekuvaka. Zvinofanira kutsanangurwa pano kuti kana viscosity ye cellulose ether yakakwira, kuchengetedza mvura kuri nani, asi viscosity yakakwira, huwandu hwemamorekuru e cellulose ether hwakakwira, uye kudzikira kwakafanana kwekunyungudika kwayo, izvo zvine mhedzisiro yakaipa pakuwanda kwemortar uye mashandiro ekuvaka. Viscosity yakakwira, mhedzisiro yekukora kwayo iri pachena, asi haina kuenzana zvachose. Viscosity yepakati nepasi, asi modified cellulose ether ine mashandiro ari nani mukuvandudza simba rekuvaka remortar yakanyorova. Nekuwedzera kweviscosity, kuchengetedza mvura kwe cellulose ether kunovandudzika.
Nguva yekutumira: Kukadzi-28-2023