Cellulose ether ipolymer isiri yeionic semi-synthetic, inonyungudika mumvura uye inonyungudika. Ine mhedzisiro dzakasiyana mumaindasitiri akasiyana. Semuenzaniso, muzvinhu zvekuvaka zvemakemikari, ine mhedzisiro inotevera yecomposite: ① chinhu chinochengetedza mvura ② chinosimbisa ③ chimiro chekuyera ④ chimiro chinoita firimu ⑤ chinosunga; muindasitiri yepolyvinyl chloride, imulsifier uye dispersant; muindasitiri yemishonga, imushonga wekubatanidza uye kurongedza. Bvisa zvinhu zveskeleton, nezvimwewo, nekuti cellulose ine mhedzisiro dzakasiyana-siyana, saka minda yayo yekushandisa ndiyo yakanyanya kuwanda. Tevere, ndichatarisa pakushandiswa uye kushanda kwecellulose ether muzvinhu zvekuvaka zvekuchengetedza zvakatipoteredza.
1. Pendi yelatex
Muindasitiri yependi yelatex, kusarudza hydroxyethyl cellulose, dhairekitori yakaenzana ye viscosity iRT30000-50000cps, iyo inoenderana nedhairekitori yeHBR250, uye chiyero chereferensi chinowanzo kuve 1.5‰-2‰. Basa guru rehydroxyethyl mupendi yelatex nderekukora, kudzivirira gelation yepigment, kubatsira kupararira kwepigment, kugadzikana kwelatex, uye kuwedzera viscosity yezvikamu, izvo zvinobatsira mukuita kwekuenzanisa kwekuvaka: Hydroxyethyl cellulose iri nyore kushandisa. Inogona kunyungudutswa mumvura inotonhora nemvura inopisa, uye haikanganisike ne pH value. Inogona kushandiswa zvakachengeteka pakati pePI value 2 ne12. Nzira dzekushandisa ndeidzi:
(1) Wedzera zvakananga mukugadzirwa:
Panzira iyi, hydroxyethyl cellulose delayed type inofanira kusarudzwa, uye hydroxyethyl cellulose ine nguva yekunyungudika kweanopfuura maminetsi makumi matatu inoshandiswa. Matanho acho ndeaya anotevera: ① Isa huwandu hwakati hwemvura yakachena mumudziyo wakashongedzwa neagitator ine high-shear ② Tanga kukurunga nguva dzose nekumhanya kwakaderera, uye panguva imwe chete wedzera zvishoma nezvishoma boka rehydroxyethyl mumushonga zvakaenzana ③Ramba uchikurunga kusvika zvese zvakanyungudika zvanyorova ④Wedzera zvimwe zvinowedzera uye zvekuwedzera zvekutanga, nezvimwewo. ⑤Kurunga kusvika zvese zvikamu zvehydroxyethyl zvanyungudika zvachose, wobva wawedzera zvimwe zvikamu mufomura wozvikuya kusvika chigadzirwa chapera.
(2) Yakashongedzerwa nedoro remumba kuti rizoshandiswa gare gare:
Nzira iyi inogona kusarudza mhando inokurumidza, uye ine cellulose inodzivirira kukora. Chakanakira nzira iyi ndechekuti ine kuchinjika kukuru uye inogona kuwedzerwa zvakananga kupende yelatex. Nzira yekugadzirira yakafanana nematanho ①-④.
(3), yakasanganiswa kuita porridge kuti izoshandiswa gare gare:
Sezvo zvinonyungudutsa zve organic zvisiri zvinonyungudutsa zvakanaka (zvisinganyungudike) zve hydroxyethyl, zvinonyungudutsa izvi zvinogona kushandiswa kugadzira porridge. Zvinonyungudutsa zve organic zvinonyanya kushandiswa i organic liquids mu latex pendi formulations, dzakadai se ethylene glycol, propylene glycol, uye firimu-forming agents (senge diethylene glycol butyl acetate). Porridge hydroxyethyl cellulose inogona kuwedzerwa zvakananga mupendi. Ramba uchikurunga kusvika yanyungudika zvachose.
2. Puti yekukwesha pamadziro
Parizvino, mumaguta mazhinji munyika yangu, putty isingapindi mvura uye isingapindi scrub yave ichikosheswa nevanhu. Inogadzirwa ne acetal reaction yevinyl alcohol uye formaldehyde. Saka, chinhu ichi chinobviswa zvishoma nezvishoma nevanhu, uye zvigadzirwa zve cellulose ether zvinoshandiswa kutsiva chinhu ichi. Kureva kuti, pakugadzira zvinhu zvekuvaka zvisingapindi zvakatipoteredza, cellulose ndiyo chete chinhu chiripo parizvino.
Muputty isingapindi mvura, yakakamurwa kuita mhando mbiri: putty yeupfu hwakaoma neputty paste. Pakati pemhando mbiri idzi dzeputty, methyl cellulose yakagadziriswa uye hydroxypropyl methyl inofanira kusarudzwa. Hunhu hwe viscosity hunowanzova pakati pe30000-60000cps. Mabasa makuru e cellulose muputty ndeyekuchengetedza mvura, kubatana uye kunyorovesa.
Sezvo maformula eputty evagadziri vakasiyana-siyana akasiyana, mamwe igrey calcium, light calcium, white cement, nezvimwewo, uye mamwe igypsum powder, grey calcium, light calcium, nezvimwewo, saka marongero, viscosity uye kupinda kwecellulose mumaformula maviri akasiyanawo. Huwandu hwakawedzerwa hunenge 2‰-3‰.
Mukuvaka putty yekukwenya madziro, sezvo pasi pemadziro paine mwero wakati wekukwenya mvura (mwero wekukwenya mvura pamadziro ezvidhinha i13%, uye mwero wekukwenya mvura pakongiri i3-5%), pamwe chete nekubuda kwemvura kunze kwenyika, kana putty ikarasikirwa nemvura nekukurumidza, Izvi zvinotungamira mukutsemuka kana kubviswa kwehupfu, izvo zvinoderedza simba reputty. Saka, kuwedzera cellulose ether kuchagadzirisa dambudziko iri. Asi mhando yefiller, kunyanya mhando yecalcium yedota, yakakoshawo zvikuru. Nekuda kwekunaka kwakanyanya kwecellulose, kubhururuka kweputty kunowedzerwawo, uye chiitiko chekudzikama panguva yekuvaka chinodziviswawo, uye chinonyaradza uye chinochengetedza basa mushure mekukwenya.
Zviri nyore kuwedzera cellulose ether mupowder putty. Kugadzirwa kwayo uye kushandiswa kwayo zviri nyore. Filler nezvimwe zvinowedzerwa zvinogona kusanganiswa zvakaenzana mudry powder.
3. Dura rekongiri
Mudhaka rekongiri, kuti simende iwane simba rayo guru, simende inofanira kunge yakanyoroveswa zvizere. Kunyanya mukuvakwa kwezhizha, dhaka rekongiri rinorasikirwa nemvura nekukurumidza, uye zviyero zvekunyoroveswa zvakakwana zvinoshandiswa kuchengetedza nekusasa mvura. Kutambisa zviwanikwa uye kushanda zvisina kunaka, chinhu chikuru ndechekuti mvura iri pamusoro chete, uye kunyoroveswa kwemukati hakusati kwakwana, saka mhinduro yedambudziko iri ndeyekuwedzera zvinhu zvisere zvinochengetedza mvura mudhaka rekongiri, kazhinji sarudza hydroxypropyl methyl kana methyl Cellulose, specification ye viscosity iri pakati pe20000-60000cps, uye huwandu hwekuwedzera i2%-3%. Mwero wekuchengetedza mvura unogona kuwedzerwa kusvika kupfuura 85%. Nzira yekushandisa mudhaka rekongiri ndeyekusanganisa upfu hwakaoma zvakaenzana wodurura mumvura.
4. Mukupurasita gypsum, gypsum yekubatanidza, gypsum yekubatanidza
Nekukura kuri kuita indasitiri yekuvaka nekukurumidza, kuda kwevanhu zvinhu zvitsva zvekuvaka kuri kuwedzerawo zuva nezuva. Nekuda kwekuwedzera kweruzivo rwevanhu nezvekuchengetedzwa kwezvakatipoteredza uye kuvandudzwa kuri kuramba kuchienderera mberi kwekushanda zvakanaka kwekuvaka, zvigadzirwa zvegypsum zvine simende zvave kukura nekukurumidza. Parizvino, zvigadzirwa zvegypsum zvinonyanya kushandiswa iplastering gypsum, bonded gypsum, inlaid gypsum, uye tile adhesive.
Kupurasita gypsum chinhu chemhando yepamusoro chekupurasita madziro nedenga remukati. Rutivi rwemadziro rwakagadzirwa narwo rwakanaka uye rwakatsetseka. Chinonamira bhodhi idzva rekuvaka chinhu chinonamira chakagadzirwa negypsum sechinhu chepakutanga nezvimwe zvinhu zvakasiyana-siyana. Chakakodzera kubatanidza pakati pezvinhu zvakasiyana-siyana zvemadziro ekuvaka zvisina organic. Hachina chepfu, Hachinhuhwiriri, chine simba rekutanga uye chinokurumidza kuiswa, chine simba rekubatanidza nezvimwe zvinhu, chinhu chinotsigira mapuranga ekuvaka nekuvaka mabhuroko; gypsum caulking agent chinhu chinozadza gap pakati pemabhodhi egypsum nechinozadza kugadzirisa madziro nemakomba.
Zvigadzirwa zvegypsum izvi zvine mabasa akasiyana-siyana. Pamusoro pebasa regypsum nezvimwe zvinozadza zvine chekuita nazvo, nyaya huru ndeyekuti zvimwe zvinowedzerwa zve cellulose ether zvinotamba basa guru. Sezvo gypsum yakakamurwa kuita gypsum isina mvura uye hemihydrate gypsum, gypsum dzakasiyana dzine mhedzisiro yakasiyana pakushanda kwechigadzirwa, saka kukora, kuchengetedza mvura uye kunonoka kunosarudza mhando yezvinhu zvekuvaka zvegypsum. Dambudziko rinowanzoitika rezvinhu izvi nderekutsemuka nekupwanyika, uye simba rekutanga harigone kusvikwa. Kugadzirisa dambudziko iri, kusarudza rudzi rwe cellulose uye nzira yekushandisa compound ye retarder. Panyaya iyi, methyl kana hydroxypropyl methyl 30000 inowanzo sarudzwa. -60000cps, huwandu hwekuwedzera i1.5%–2%. Pakati pavo, cellulose inotarisa pakuchengetedza mvura uye kunonoka kwe lubrication.
Zvisinei, hazvigoneke kuvimba ne cellulose ether se retarder, uye zvakakosha kuwedzera citric acid retarder kuti uisanganise uye ushandise pasina kukanganisa simba rekutanga.
Kuchengetwa kwemvura kunowanzoreva kuti mvura yakawanda sei icharasika pasina kutorwa kwemvura kubva kunze. Kana madziro akaoma zvakanyanya, kutorwa kwemvura uye kupwa kwemvura kubva pasi kuchaita kuti chinhu chacho chirasikirwe nemvura nekukurumidza, uye maburi nekuputika zvichaitikawo.
Nzira iyi yekushandisa inosanganiswa neupfu hwakaoma. Kana ukagadzira mhinduro, ndapota tarisa nzira yekugadzira mhinduro yacho.
5. Kupisa kwemvura dhaka
Dura rekudzivirira kupisa imhando itsva yezvinhu zvinodzivirira kupisa mukati memadziro munzvimbo yekuchamhembe. Imidziyo yekudzivirira kupisa yakagadzirwa nezvinhu zvinodzivirira kupisa, dura uye binder. Muzvinhu izvi, cellulose inoita basa guru mukubatanidza uye kuwedzera simba. Kazhinji sarudza methyl cellulose ine viscosity yakakwira (inenge 10000eps), chiyero chinowanzova pakati pe2‰-3‰), uye nzira yekushandisa ndeyekusanganisa upfu hwakaoma.
6. Mumiririri weinterface
Sarudza HPNC 20000cps yemushonga wekubatanidza, sarudza 60000cps kana kupfuura yemushonga wekubatanidza mataira, uye tarisa pane chinosimbisa chiri mumushonga wekubatanidza, izvo zvinogona kuvandudza simba rekudhonza uye simba rekudzivirira museve.
Nguva yekutumira: Kukadzi-17-2023