Zvigadzirwa zvesimende, zvakaita sekongiri, dhaka, uye zvimwe zvekuvakisa, zvinoshandiswa zvakanyanya muzvivako zvemazuva ano. Cellulose ethers (yakadai sehydroxypropyl methylcellulose (HPMC), hydroxyethyl methylcellulose (HEMC), nezvimwewo) zvakakosha zvinowedzera zvinogona kuvandudza zvakanyanya kushanda kwezvigadzirwa zvesimenti. Kuti uwane izvi zvakanakisa zvivakwa, zvakakosha kugona uye kudzora mashandiro e cellulose ethers.
1. Zvinhu zvakakosha uye mabasa e cellulose ethers
Cellulose ethers ikirasi yemakemikari anobva ku natural cellulose, umo boka re hydroxyl rinotsiviwa zvishoma neboka re ether kuburikidza ne etherification reaction. Mhando dzakasiyana dze cellulose ethers dzinogona kugadzirwa zvichienderana nerudzi uye nhamba yezvinotsiva, uye mhando yega yega ine basa rakasiyana muzvigadzirwa zvesimende.
Viscosity ye cellulose ethers:
Iyo viscosity ye cellulose ether inobata zvakananga rheology uye kugadzikana kwesamende paste. High-viscosity cellulose ethers inogona kuvandudza kuchengetwa kwemvura uye kusimba kwekubatanidza kwenamira, asi inogona kuderedza kuyerera kwayo. Low-viscosity cellulose ethers inobatsira kuvandudza kushanda uye fluidity.
Dhigirii rekutsiva (DS) uye molar substitution (MS):
Iyo dhigirii yekutsiva uye molar inotsiva cellulose ether inotarisa kunyungudika kwayo uye viscosity yemhinduro. Yakakwirira dhigirii yekutsiva uye yakakwirira molar inotsiva inogona kazhinji kuvandudza kuchengetwa kwemvura uye kugadzikana kwe cellulose ethers.
Solubility ye cellulose ethers:
Mwero wekunyungudika uye kunyungudika kwe cellulose ethers kunokanganisa kufanana kwesamende paste. Cellulose ethers ine yakanaka solubility inogona kuumba yunifomu mhinduro nekukurumidza, nekudaro kuve nechokwadi chekufanana uye kugadzikana kwepaste.
2. Sarudza akakodzera cellulose ethers
Mamiriro ekushandisa akasiyana ane akasiyana ekuita zvinodiwa zve cellulose ethers. Kusarudza mhando chaiyo uye kutsanangurwa kwe cellulose ether kunogona kuvandudza zvakanyanya mashandiro ezvigadzirwa zvesimende:
Binders:
Mumashandisirwo akadai semataira anonamira uye plaster dhaka, yakakwira-viscosity cellulose ethers (yakadai seHPMC) inogona kupa kunamatira kuri nani uye kunyorova kwekusingaperi, nekudaro kunatsiridza kuita kwekuvaka uye kwekupedzisira kusungirira simba.
Zvishandiso zvekuchengetedza mvura:
Mumadhaka ekuzvimisa-leveling uye simenti-based tile adhesives, cellulose ethers nepamusoro pekuchengetedza mvura (yakadai seHEMC) inodiwa. Kuchengetwa kwemvura kwakakwirira kunobatsira kudzivirira kurasikirwa kwemvura nguva isati yakwana, nekudaro kuve nechokwadi chekuti hydration reaction yakakwana uye nguva yakareba yekushanda.
Reinforcing materials:
Cellulose ethers inoshandiswa kuwedzera kusimba kwezvigadzirwa zvesimende inoda kuve nedispersibility yakanaka uye ine mwero viscosity kuti iwedzere kufanana uye kusimba kwematrix.
3. Gadzirisa nzira yekuwedzera
Kudzora nzira yekuwedzera ye cellulose ether muzvigadzirwa zvesimende kwakakosha kuti iwedzere kushanda kwayo. Izvi zvinotevera nzira dzinoverengeka dzakajairika optimization:
Premixing nzira:
Sanganisa cellulose ether nezvimwe zvakaoma zvinhu zvehupfu pamberi. Iyi nzira inogona kudzivirira kuumbwa kweagglomeration ye cellulose ether mushure mekusangana kwakananga nemvura, nekudaro kuve nechokwadi chekupararira kwayo kweyunifomu mune slurry.
Wet kusanganisa nzira:
Wedzera cellulose ether kune simende slurry zvishoma nezvishoma. Iyi nzira yakakodzera mamiriro ezvinhu apo cellulose ether inopera nokukurumidza uye inobatsira kuumba kumira kwakagadzikana.
Segmented yekuwedzera nzira:
Mukugadzira simende slurry, kuwedzera cellulose ether muzvikamu zvinogona kuve nechokwadi chekugovera kwayo yunifomu mukati megadziriro yese yekugadzirira uye kuderedza agglomeration.
4. Dzora zvinhu zvekunze
Zvinhu zvekunze zvakaita setembiricha, pH kukosha, uye nhanho yekukurudzira zvine simba rakakura pakuita kwe cellulose ether.
Kudzora tembiricha:
Kunyungudika uye viscosity ye cellulose ether inonyatso nzwisisa tembiricha. Kupisa kwepamusoro kunobatsira cellulose ether kunyungudika nekukasira, asi zvinogona kukonzera kuti viscosity yemushonga iderere. Iyo tembiricha inofanirwa kugadziridzwa zvinoenderana neiyo chaiyo application mamiriro kuti ive nechokwadi chekushanda kwakakwana uye kuita.
pH kugadzirisa: Kukosha kwepH yesimende paste kunowanzova munzvimbo yakakwirira yealkaline, nepo kunyungudika uye viscosity ye cellulose ether inoshanduka nekuchinja kwe pH kukosha. Kudzora kukosha kwepH mukati mechikamu chakakodzera kunogona kudzikamisa kushanda kwe cellulose ether.
Kukurudzira mwero: Chiyero chinokuchidzira chinokanganisa kupararira kweselulosi ether mune simende paste. Kunyanya kubvongodza mwero kunogona kutungamirira kukusumwa kwemhepo uye kuunganidzwa kwe cellulose ether, nepo mwero wepakati wekukurudzira uchibatsira kugovera zvakaenzana nekunyungudutsa cellulose ether.
5. Kuongorora nyaya uye mazano anoshanda
Kuburikidza nekuongorora chaiko kwekesi, tinogona kuenderera mberi nekunzwisisa mashandisiro uye optimization zano re cellulose ether mune zvakasiyana zvigadzirwa simende:
High-performance tile adhesive: Apo kambani yakanga ichigadzira yakakwirira-yekuita tile adhesive, zvakaonekwa kuti kuchengetwa kwemvura kwechigadzirwa chepakutanga kwakanga kusina kukwana, zvichiita kuti kuderera kwesimba rekubatanidza mushure mekuvaka. Nekuisa HEMC yakakwirira-yekuchengetedza mvura uye kugadzirisa huwandu hwayo hwekuwedzera uye nzira yekuwedzera (uchishandisa premixing nzira), kuchengetedza kwemvura uye kusungirirwa kwesimba rekunamatira tile zvakabudirira kuvandudzwa.
Kuzvimisikidza pauriri zvinhu: Iyo yekuzvimisikidza yepasi zvinhu yakashandiswa mune imwe purojekiti yaive isina kunyorova uye kusadzikama kwepasi mushure mekuvakwa. Nekusarudza yakaderera-viscosity HPMC uye nekugadzirisa iyo inosimudzira chiyero uye tembiricha kutonga, fluidity uye kuita kwekuvaka kweiyo slurry kunovandudzwa, zvichiita kuti iyo yekupedzisira pasi pevhu ive nyore.
Kudzora kuita kwe cellulose ether muzvigadzirwa zvesimende ndiyo kiyi yekuvandudza mashandiro emidziyo uye kunaka kwekuvaka. Nekusarudza mhando yakakodzera ye cellulose ether, optimize nzira yekuwedzera, uye kutonga kwekunze kupesvedzera zvinhu, zvakakosha zvesimende zvigadzirwa zvakadai sekuchengetedza mvura, adhesion, uye fluidity inogona kuvandudzwa zvakanyanya. Mumashandisirwo anoshanda, zvinodikanwa kuenderera mberi nekugadzirisa uye kugadzirisa kushandiswa kweselulosi ether zvinoenderana nezvinodiwa chaizvo uye mamiriro ekushandisa kuti uwane mhedzisiro yakanaka.
Nguva yekutumira: Jun-26-2024