Zvigadzirwa zvesimende, zvakaita sekongiri, dhaka, nezvimwe zvinhu zvekuvaka, zvinoshandiswa zvakanyanya muzvivakwa zvemazuva ano. Cellulose ethers (senge hydroxypropyl methylcellulose (HPMC), hydroxyethyl methylcellulose (HEMC), nezvimwewo) zvinhu zvakakosha zvinogona kuvandudza mashandiro ezvigadzirwa zvesimende. Kuti uwane hunhu hwakanaka uhwu, zvakakosha kuti uve nyanzvi uye utonge mashandiro e cellulose ethers.
1. Hunhu hwekutanga uye mashandiro e ethers e cellulose
Cellulose ethers iboka remakemikari anobva mu cellulose yechisikigo, umo boka rehydroxyl rinotsiviwa zvishoma neboka re ether kuburikidza ne etherification reaction. Mhando dzakasiyana dze cellulose ethers dzinogona kugadzirwa zvichienderana nerudzi uye huwandu hwezvinotsiva, uye mhando yega yega ine basa rakasiyana muzvigadzirwa zvesimende.
Kupenya kwe ethers dze cellulose:
Kusimba kwe cellulose ethers kunokanganisa zvakananga rheology uye kugadzikana kwe simende paste. High-viscosity cellulose ethers inogona kuvandudza kuchengetedza mvura uye simba rekubatanidza kwe paste, asi inogona kuderedza kusimba kwayo. Low-viscosity cellulose ethers inobatsira kuvandudza kushanda uye kusimba kwayo.
Dhigirii rekutsiva (DS) uye rekutsiva molar (MS):
Kuwanda kwekutsiva uye kuchinjana kwemasero emusanganiswa we cellulose ethers kunoratidza kunyungudika kwayo uye kunaka kwemusanganiswa. Kuwanda kwekutsiva uye kuchinjana kwemasero emusanganiswa we high molar zvinowanzo vandudza kuchengetedza mvura uye kugadzikana kwemasero emusanganiswa we cellulose ethers.
Kunyunguduka kwe ethers dze cellulose:
Mwero wekunyungudika uye kunyungudika kwe cellulose ethers kunokanganisa kufanana kwe simende paste. Cellulose ethers ine kunyungudika kwakanaka inogona kugadzira mhinduro yakafanana nekukurumidza, zvichiita kuti paste ive yakafanana uye yakagadzikana.
2. Sarudza ma ether e cellulose akakodzera
Mamiriro akasiyana ekushandiswa ane zvinodiwa zvakasiyana zvekushanda kwe cellulose ethers. Kusarudza mhando chaiyo uye kutsanangurwa kwe cellulose ether kunogona kuvandudza zvakanyanya mashandiro ezvigadzirwa zvesimende:
Zvinosunga:
Mukushandiswa kwakadai sekunamatira emataira ne plaster mortars, ma ether ane viscosity high-viscosity cellulose (akadai seHPMC) anogona kupa kunamira kuri nani uye kunyorova kwenguva refu, nokudaro zvichivandudza mashandiro ekuvaka uye simba rekupedzisira rekubatanidza.
Zvinhu zvinochengetedza mvura:
Mumamortars anozvienzanisa uye ma tile akagadzirwa nesimende, ma cellulose ethers ane mvura yakawanda (senge HEMC) anodiwa. Mvura yakawanda inobatsira kudzivirira kurasikirwa nemvura nguva isati yakwana, nokudaro zvichiita kuti mvura irambe ichinaya zvakakwana uye kuti ishande kwenguva yakareba.
Zvinhu zvinosimbisa:
Cellulose ethers dzinoshandiswa kuwedzera simba rezvigadzirwa zvesimende dzinofanira kuva nekupararira kwakanaka uye kusimba kuri pakati nepakati kuti dziwedzere kufanana uye simba rematrix.
3. Gadzirisa nzira yekuwedzera
Kudzora nzira yekuwedzera cellulose ether muzvigadzirwa zvesimende kwakakosha kuti ibudirire zvakanyanya. Idzi ndidzo nzira dzakawanda dzekugadzirisa zvinhu:
Nzira yekutanga kusanganisa:
Sanganisa cellulose ether nezvimwe zvinhu zveupfu hwakaoma pachine nguva. Nzira iyi inogona kudzivirira kuungana kwe cellulose ether mushure mekusangana zvakananga nemvura, nokudaro ichivimbisa kupararira kwayo kwakafanana mumatope.
Nzira yekusanganisa yakanyorova:
Wedzera cellulose ether ku cement slurry zvishoma nezvishoma. Nzira iyi yakakodzera mamiriro ezvinhu apo cellulose ether inonyunguduka nekukurumidza uye inobatsira kugadzira suspension yakasimba.
Nzira yekuwedzera yakakamurwa:
Mukugadzirira simende, kuwedzera cellulose ether muzvikamu kunogona kuita kuti ipararire zvakaenzana panguva yekugadzirira uye kuderedza kuungana kwesimbi.
4. Dzora zvinhu zvekunze
Zvinhu zvekunze zvakaita sekupisa, pH, uye stirging rate zvine simba guru pakushanda kwe cellulose ether.
Kudzora tembiricha:
Kunyungudika uye kusimba kwe cellulose ether zvinonzwa zvakanyanya tembiricha. Kupisa kwakanyanya kunobatsira cellulose ether kuti inyungudike nekukurumidza, asi kunogonawo kukonzera kusimba kwemushonga kudzikira. Tembiricha inofanira kugadziriswa zvichienderana nemamiriro ezvinhu chaiwo ekushandiswa kuti ive nechokwadi chekuti inoshanda zvakanaka uye inoshanda zvakanaka.
Kugadziriswa kwepH: pH kukosha kwe simende paste inowanzo kuve muhuwandu hwe alkaline yakawanda, ukuwo kunyungudika uye kusimba kwe cellulose ether kuchichinja nekuchinja kwe pH kukosha. Kudzora pH kukosha mukati mehuwandu hwakakodzera kunogona kudzikamisa mashandiro e cellulose ether.
Kukurunga: Kukurunga kunokanganisa kupararira kwe cellulose ether mu simende paste. Kukurunga kwakanyanya kunogona kukonzera kupinza kwemhepo uye kuungana kwe cellulose ether, nepo kukurunga kuri pakati nepakati kuchibatsira kugovanisa nekunyungudutsa cellulose ether zvakaenzana.
5. Kuongorora nyaya uye mazano anoshanda
Kuburikidza nekuongorora nyaya chaiyo, tinogona kunzwisisa zvakanyanya mashandisirwo uye nzira yekugadzirisa cellulose ether muzvigadzirwa zvakasiyana zvesimende:
Kunamira mataira zvine simba guru: Kambani payaigadzira kunamira mataira zvine simba guru, zvakaonekwa kuti kuchengetwa kwemvura kwechigadzirwa chekutanga kwakanga kusina kukwana, zvichikonzera kudzikira kwesimba rekubatanidza mushure mekuvakwa. Nekuisa HEMC ine simba rekuchengetedza mvura yakawanda uye kugadzirisa huwandu hwayo hwekuwedzera uye nzira yekuwedzera (uchishandisa nzira yekutanga yekusanganisa), kuchengetwa kwemvura uye simba rekubatanidza mataira zvakavandudzwa zvinobudirira.
Zvinhu zvepasi zvinozvienzanisa: Zvinhu zvepasi zvinozvienzanisa zvakashandiswa mune imwe purojekiti zvaive zvisina kupfava uye zvisina kupfava pamusoro mushure mekuvakwa. Nekusarudza HPMC ine viscosity yakaderera uye kugadzirisa kumhanya kwekukurunga uye kudzora tembiricha, kupfava uye mashandiro ekuvaka kweslurry zvinovandudzika, zvichiita kuti pasi rekupedzisira rive rakapfava.
Kudzora mashandiro e cellulose ether muzvigadzirwa zvesimende ndiyo kiyi yekuvandudza mashandiro ezvinhu uye kunaka kwekuvaka. Nekusarudza mhando chaiyo ye cellulose ether, kugadzirisa nzira yekuwedzera, uye kudzora zvinhu zvinopesvedzera zvekunze, hunhu hwakakosha hwezvigadzirwa zvesimende zvakaita sekuchengetedza mvura, kunamira, uye kuyerera kwemvura zvinogona kuvandudzwa zvakanyanya. Mukushandisa kwakakodzera, zvakakosha kugara uchigadzirisa uye uchigadzirisa kushandiswa kwe cellulose ether zvichienderana nezvinodiwa chaizvo uye mamiriro ekushandisa kuti uwane mhedzisiro yakanaka.
Nguva yekutumira: Chikumi-26-2024