1 Nhanganyaya
Cellulose ether (MC) inoshandiswa zvakanyanya muindasitiri yezvinhu zvekuvaka uye inoshandiswa zvakanyanya. Inogona kushandiswa semubati wemvura, mubati wemvura, muchina wekunamira uye muchina wekunamira. Mudhaka rakajairika rakasanganiswa nemvura, dhaka rekunze rinodziisa madziro, dhaka rinozvienzanisa, dhaka remataira, putty yekuvaka inoshanda zvakanyanya, putty yemukati nekunze inodzivisa kupwanyika, dhaka risingapindi mvura rakasanganiswa nemvura, gypsum plaster, muchina wekunamira mvura nezvimwe zvinhu, cellulose Ethers ine basa rakakosha. Cellulose ether ine simba guru pakuchengetwa kwemvura, kudiwa kwemvura, kubatana, kunonoka uye kuvaka kwehurongwa hwedhaka.
Kune mhando dzakasiyana siyana uye zvirevo zve cellulose ethers. Cellulose ethers dzinoshandiswa zvakanyanya mumunda wezvinhu zvekuvaka dzinosanganisira HEC, HPMC, CMC, PAC, MHEC, nezvimwewo, izvo zvinoshandiswa mumasisitimu akasiyana emortar zvichienderana nehunhu hwadzo. Vamwe vanhu vakaita tsvakurudzo pamusoro pesimba remhando dzakasiyana uye huwandu hwakasiyana hwe cellulose ether pasystem yemortar yesimende. Chinyorwa chino chinotarisa pane izvi uye chinotsanangura masarudzo akasiyana uye zvirevo zve cellulose ethers muzvigadzirwa zvakasiyana zvemortar.
2 Hunhu hwekushanda kwe cellulose ether mudura resimende
Semusanganiswa wakakosha mumota yeupfu hwakaoma, cellulose ether ine mabasa akawanda mumota. Basa guru re cellulose ether mumota yesimende nderekuchengetedza mvura nekukora. Pamusoro pezvo, nekuda kwekubatana kwayo nesystem yesimende, inogonawo kuita basa rekubatsira mukusimbisa mhepo, kudzoreredza mamiriro, uye kuvandudza simba rekubatanidza.
Chinhu chinonyanya kukosha che cellulose ether mumortar ndechekuchengetedza mvura. Cellulose ether inoshandiswa semusanganiswa wakakosha mune zvese zvigadzirwa zvemortar, kunyanya nekuda kwekuchengetedza kwayo mvura. Kazhinji, kuchengetedza mvura kwe cellulose ether kunoenderana nekusimba kwayo, huwandu hwekuwedzera uye saizi yezvikamu.
Cellulose ether inoshandiswa semuchina wekukora, uye simba rayo rekukora rine chekuita nedanho re etherification, saizi yezvikamu, viscosity uye danho rekuchinja re cellulose ether. Kazhinji, kana simba re etherification uye viscosity ye cellulose ether yakakwira, zvikamu zvidiki, simba rekukora rinowedzera kuoneka. Nekugadzirisa hunhu hweMC hwataurwa pamusoro apa, mortar inogona kuwana simba rakakodzera rekudzivirira kudonha uye viscosity yakanakisa.
Mu cellulose ether, kuiswa kweboka realkyl kunoderedza simba repamusoro remvura ine cellulose ether, kuitira kuti cellulose ether ive nemhepo inopinza simende. Kuisa mabubbles emhepo akakodzera mumortar kunovandudza mashandiro ekuvaka kwemortar nekuda kwe "ball effect" yemabubbles emhepo. Panguva imwe chete, kuiswa kwemabubbles emhepo kunowedzera mwero wekubuda kwemortar. Ehe, huwandu hweair-entrainment hunofanira kudzorwa. Air-entrainment yakawandisa inokanganisa simba remortar, nekuti mabubbles emhepo ane njodzi anogona kuiswa.
2.1 Cellulose ether inononotsa kunyorova kwesimbi, nokudaro ichideredza kugadzika kwesimbi uye kuoma kwayo, uye ichiwedzera nguva yekuvhurwa kwesimbi zvinoenderana, asi izvi hazvina kunaka kune simbi munzvimbo dzinotonhora. Pakusarudza cellulose ether, chigadzirwa chakakodzera chinofanira kusarudzwa zvichienderana nemamiriro ezvinhu chaiwo. Kunonoka kwesimbi ye cellulose ether kunonyanya kuwedzerwa nekuwedzera kwe etherification yayo, kushandurwa kwayo uye viscosity.
Pamusoro pezvo, cellulose ether, sechinhu chinoshanda sepolymer, inogona kuvandudza mashandiro ekubatanidza ne substrate mushure mekuwedzerwa kune simende system pasi pepfungwa yekuchengetedza hunyoro hweslurry zvizere.
2.2 Hunhu hwe cellulose ether mumortar hunosanganisira: kuchengetedza mvura, kukora, kuwedzera nguva yekugadzika, kupinza mweya uye kuvandudza simba rekusungana, nezvimwewo. Zvichienderana nehunhu hwataurwa pamusoro apa, zvinoratidzwa nehunhu hweMC pachayo, hunoti: viscosity, kugadzikana, huwandu hwezvinhu zvinoshanda (huwandu hwekuwedzera), huwandu hwekutsiva etherification uye kufanana kwayo, huwandu hwekuchinja, huwandu hwezvinhu zvinokuvadza, nezvimwewo. Saka, pakusarudza MC, cellulose ether ine hunhu hwayo hunogona kupa mashandiro akakodzera inofanira kusarudzwa zvichienderana nezvinodiwa zvechigadzirwa chemortar chaiyo kuti ishande zvakanaka.
3 Hunhu hwe cellulose ether
Kazhinji, mirairo yechigadzirwa inopiwa nevagadziri ve cellulose ether inosanganisira zviratidzo zvinotevera: chitarisiko, viscosity, mwero wekutsiva boka, kupfava, huwandu hwezvinhu zvinoshanda (kuchena), huwandu hwehunyoro, nzvimbo dzinokurudzirwa uye chiyero, nezvimwewo. Zviratidzo izvi zvekushanda zvinogona kuratidza chikamu chebasa re cellulose ether, asi pakuenzanisa nekusarudza cellulose ether, zvimwe zvinhu zvakaita sekuumbwa kwayo kwemakemikari, mwero wekuchinja, mwero we etherification, mwero we NaCl, uye kukosha kweDS zvinofanirawo kuongororwa.
3.1 Kupenya kwe cellulose ether
Kuwanda kwe cellulose ether kunokanganisa kuchengetwa kwemvura, kukora kwayo, kunonoka kwayo nezvimwe zvinhu. Saka, chiratidzo chakakosha chekuongorora nekusarudza cellulose ether.
Tisati takurukura nezve viscosity ye cellulose ether, zvinofanira kucherechedzwa kuti kune nzira ina dzinowanzo shandiswa pakuedza viscosity ye cellulose ether: Brookfield, Hakke, Höppler, uye rotational viscometer. Midziyo, huwandu hwemhinduro uye nzvimbo yekuyedza inoshandiswa nenzira ina dzakasiyana, saka mhedzisiro ye MC solution imwe chete yakaedzwa nenzira ina dzakasiyanawo. Kunyangwe kune mhinduro imwe chete, uchishandisa nzira imwe chete, kuyedza mumamiriro akasiyana ezvakatipoteredza, viscosity
Mhedzisiro yacho inosiyanawo. Saka, pakutsanangura viscosity ye cellulose ether, zvakakosha kuratidza kuti ndeipi nzira inoshandiswa pakuedza, kuyera mhinduro, rotor, kumhanya kwekutenderera, tembiricha yekuedza nehunyoro nezvimwe zvinhu zvekunze. Kukosha uku kwe viscosity kunokosha. Hazvina zvazvinoreva kungotaura kuti "viscosity yeimwe MC chii".
3.2 Kugadzikana kwechigadzirwa cheCellulose Ether
MaCellulose ether anozivikanwa kuti anogona kurwiswa ne cellulosic molds. Kana fungus ikaparadza cellulose ether, inotanga yarwisa unetherified glucose unit iri mu cellulose ether. Semusanganiswa wemutsara, kana glucose unit yaparadzwa, molecular chain yese inotyoka, uye viscosity yechigadzirwa inodonha zvakanyanya. Mushure mekunge glucose unit yapiswa, mold haizokanganisi nyore nyore molecular chain. Saka, kana etherification substitution (DS value) ye cellulose ether yakakwira, kugadzikana kwayo kunowedzera.
3.3 Zviri mukati me cellulose ether
Kana zvinhu zvinoshanda zviri mu cellulose ether zvakakwirira, mutengo wechinhu chacho unowedzera, saka mhedzisiro iri nani inogona kuwanikwa nechiyero chimwe chete. Chinhu chinoshanda mu cellulose ether i cellulose ether molecule, inova chinhu cheorganic. Saka, kana uchiongorora huwandu hwezvinhu zvinoshanda mu cellulose ether, inogona kuratidzwa zvisina kunanga neash value mushure me calcination.
3.4 NaCl zvirimo mu cellulose ether
NaCl chinhu chinobva mukugadzirwa kwe cellulose ether, iyo inowanzo fanirwa kubviswa nekugezwa kakawanda, uye nguva yakawanda yekugezwa, NaCl shoma inoramba iripo. NaCl injodzi inozivikanwa zvikuru yekuora kwesimbi nesimbi. Saka, kunyangwe kurapwa kwetsvina yekugezwa kweNaCl kakawanda kuchigona kuwedzera mutengo, pakusarudza zvigadzirwa zveMC, tinofanira kuedza nepese patinogona kusarudza zvigadzirwa zvine NaCl shoma.
4 Nheyo dzekusarudza cellulose ether yezvigadzirwa zvakasiyana zvedhaka
Pakusarudza cellulose ether yezvigadzirwa zvemortar, chekutanga, zvichienderana netsananguro yebhuku rechigadzirwa, sarudza zviratidzo zvayo zvekushanda (zvakadai sekupenya, mwero wekutsiva etherification, huwandu hwezvinhu zvinoshanda, huwandu hweNaCl, nezvimwewo) Hunhu hwebasa uye misimboti yekusarudza
4.1 Sisitimu yakatetepa yepurasita
Tichitora dhaka rekupurasita rehurongwa hwekupurasita hwakatetepa semuenzaniso, sezvo dhaka rekupurasita rinosangana zvakananga nekunze, pamusoro paro rinorasikirwa nemvura nekukurumidza, saka mwero wepamusoro wekuchengetedza mvura unodiwa. Kunyanya panguva yekuvaka muzhizha, zvinodiwa kuti dhaka rigone kuchengetedza hunyoro zviri nani pakupisa kwakanyanya. Zvinodiwa kusarudza MC ine mwero wepamusoro wekuchengetedza mvura, izvo zvinogona kufungwa zvizere kuburikidza nezvinhu zvitatu: viscosity, saizi yezvidimbu, uye huwandu hwekuwedzera. Kazhinji, mumamiriro ezvinhu akafanana, sarudza MC ine viscosity yakakwira, uye tichifunga nezvezvinodiwa zvekushanda, viscosity haifanirwe kunge yakakwira zvakanyanya. Naizvozvo, MC yakasarudzwa inofanira kunge ine mwero wepamusoro wekuchengetedza mvura uye viscosity yakaderera. Pakati pezvigadzirwa zveMC, MH60001P6 nezvimwewo zvinogona kukurudzirwa kune system yekupurasita ine adhesive yeplasita yakatetepa.
4.2 Dhaka rekupurasita rakagadzirwa nesimende
Kupurasita dhaka kunoda kufanana kwedhaka, uye zviri nyore kushandisa zvakaenzana pakupurasita. Panguva imwe chete, zvinoda kushanda zvakanaka kunodzivirira kudonha, kugona kupomba kwakawanda, kuyerera kwemvura uye kushanda zvakanaka. Nokudaro, MC ine viscosity yakaderera, kupararira nekukurumidza uye kukura kwakasimba (zvidimbu zvidiki) mudhaka resimende inosarudzwa.
Mukugadzira tile adhesive, kuitira kuti ive nechokwadi chekuti yakachengeteka uye inoshanda zvakanaka, zvinonyanya kudiwa kuti tile ive nenguva yakareba yekuvhura uye ishande zvakanaka inodzivirira kutsvedza, uye panguva imwe chete inoda chisungo chakanaka pakati pe substrate netile. Naizvozvo, tile adhesives dzine zvinodiwa zvakanyanya zveMC. Zvisinei, MC inowanzova nehuwandu hwakawanda mu tile adhesives. Pakusarudza MC, kuti isvike nguva yakareba yekuvhura, MC pachayo inofanirwa kuva nehuwandu hwakawanda hwekuchengetedza mvura, uye mwero wekuchengetedza mvura unoda viscosity yakakodzera, huwandu hwekuwedzera uye saizi yezvikamu. Kuti isvike pakushanda kwakanaka kwekudzivirira kutsvedza, mhedzisiro yekukora kweMC yakanaka, kuitira kuti tile ive nekudzivirira kwakasimba kwekuyerera kwemvura, uye mashandiro ekukora ane zvinodiwa pa viscosity, etherification degree uye saizi yezvikamu.
4.4 Duri rekugayiwa rinozvienzanisa
Dura rinozvienzanisa rine zvinodiwa zvakanyanya pakuenzana kwedura, saka zvakakodzera kusarudza zvigadzirwa zve cellulose ether zvine viscosity yakaderera. Sezvo kuzvienzanisa kuchida kuti dura rakasanganiswa zvakanaka rigone kuenzana pasi, kuyerera kwemvura uye kupomba zvinodiwa, saka chiyero chemvura nezvinhu chakakura. Kuti kudzivirira kubuda ropa, MC inodiwa kudzora kuchengetwa kwemvura pamusoro uye kupa viscosity kudzivirira kudonha kwemvura.
4.5 Dura rekugadzira matombo
Nekuti dhaka rekugadzira masonry rinosangana zvakananga nepamusoro pedhaka rekugadzira masonry, rinowanzova chivakwa chine jira rakakora. Dhaka rekugadzira masonry rinofanirwa kuve nekushanda kwakanyanya uye kuchengetedza mvura, uye rinogonawo kuve nechokwadi chekuti simba rekubatanidza nedhaka rekugadzira masonry riri kushanda zvakanaka, kuvandudza kushanda zvakanaka, uye kuwedzera kushanda zvakanaka. Saka, MC yakasarudzwa inofanira kukwanisa kubatsira dhaka kuti rivandudze mashandiro ari pamusoro apa, uye viscosity ye cellulose ether haifanirwe kunge yakanyanya kukwira.
4.6 Kuputira slurry
Sezvo slurry yekupisa inopisa ichinyanya kushandiswa nemaoko, zvinodikanwa kuti MC yakasarudzwa igone kupa dhaka kugona kushanda zvakanaka, kushanda zvakanaka uye kuchengetedza mvura zvakanaka. MC inofanirawo kuva nehunhu hwekusviba kwakanyanya uye kupinza mhepo zvakanyanya.
5 Mhedziso
Mabasa e cellulose ether mumota yesimende ndeekuchengetedza mvura, kukora, kudzikamisa mhepo, kunonoka uye kuvandudza simba rekubatanidza tensile, nezvimwewo.
Nguva yekutumira: Ndira-30-2023