I-ether ye-cellulose yinto eyongeziweyo eyongeziweyo kwizinto zokwakha, ezisetyenziselwa ukunyusa ukusebenza kolwakhiwo kunye neempawu zomatshini zodaka. Ukulunga yenye yeempawu ezibalulekileyo ze-cellulose ether, ebhekiselele ekuhanjisweni kobungakanani bamasuntswana.
Iimpawu kunye nokusetyenziswa kwe-cellulose ether
I-ether ye-cellulose ibandakanya ikakhulu i-hydroxypropyl methylcellulose (HPMC), i-hydroxyethyl cellulose (HEC), njl. Imisebenzi yabo ephambili ekwakheni udaka iquka:
Ukugcinwa kwamanzi: ngokunciphisa ukuphuphuma kwamanzi, ukwandisa ixesha lokufakwa kwesamente, kunye nokwandisa amandla odaka.
Ukutyebisa: Ukwandisa i-viscosity yodaka kunye nokuphucula ukusebenza kolwakhiwo.
Ukuphucula ukumelana nokuqhekeka: Ipropathi yokugcina amanzi ye-cellulose ether inceda ukulawula ukucutheka kwesamente, ngaloo ndlela kuncitshiswe ukwenzeka kweentanda kwidaka.
Ubuhle be-ether ye-cellulose buchaphazela ukuchithwa kwayo, ukunyibilika kunye nokusebenza kakuhle kudaka, ngaloo ndlela kuchaphazela ukusebenza ngokubanzi kodaka.
Umphumo we-cellulose ether fineness kumandla odaka unokucazululwa kule miba ilandelayo:
1. Izinga lokuchithwa kunye ne-dispersibility
Izinga lokuchithwa kwe-cellulose ether emanzini linxulumene ngokusondeleyo nokucoleka kwayo. Amasuntswana eether eselulosi anokulunga okuphezulu anyibilika ngokulula ngakumbi emanzini, ngaloo ndlela enze ukusasazwa okufanayo. Oku kuhanjiswa okufanayo kunokuqinisekisa ukugcinwa kwamanzi okuzinzileyo kunye nokuqina kuyo yonke inkqubo yodaka, ukukhuthaza ukuqhubela phambili okufanayo kwe-cement hydration reaction, kunye nokuphucula amandla okuqala omdaka.
2. Umthamo wokugcina amanzi
Ukulunga kwe-cellulose ether kuchaphazela ukusebenza kwayo kokugcinwa kwamanzi. Amasuntswana e-ether cellulose anokulunga okuphezulu abonelela ngomphezulu ongaphezulu wendawo ethile, ngaloo ndlela kwakheka amanzi angaphezulu okugcina izakhiwo zemicroporous eludaka. Ezi micropores zinokugcina amanzi ngokufanelekileyo, zandise ixesha lokuphendula i-samente hydration, zikhuthaze ukubunjwa kweemveliso ze-hydration, kwaye ngaloo ndlela ziphucula amandla odaka.
3. Ukudityaniswa kwe-interface
Ngenxa ye-dispersibility yabo elungileyo, amasuntswana e-ether cellulose anokulunga okuphezulu anokwenza umaleko wokudityaniswa okufanayo phakathi kodaka kunye ne-aggregate, kwaye iphucule ujongano lokudityaniswa kodaka. Esi siphumo sinceda udaka lugcine iplastiki elungileyo kwinqanaba lokuqala, ukunciphisa ukuvela kokuqhekeka kwe-shrinkage, kwaye ngaloo ndlela kuphuculwe amandla onke.
4. Ukukhuthaza ukuhanjiswa kwesamente
Ngethuba lenkqubo ye-cement hydration, ukubunjwa kweemveliso ze-hydration kufuna umlinganiselo othile wamanzi. I-ether ye-cellulose ene-fineness ephezulu inokwenza iimeko ezifanayo ze-hydration kwi-mortar, igweme ingxaki yokungonelanga okanye ubuninzi bomswakama wendawo, iqinisekise inkqubela epheleleyo ye-hydration reaction, kwaye ngaloo ndlela iphucula amandla omdaka.
Uphononongo lovavanyo kunye nohlalutyo lweziphumo
Ukuze kuqinisekiswe isiphumo se-cellulose ether fineness kumandla odaka, ezinye izifundo zovavanyo zilungelelanise ukucoleka kwe-cellulose ether kwaye zavavanya iimpawu zayo zomatshini wodaka phantsi komlinganiselo owahlukileyo.
Uyilo lovavanyo
Uvavanyo lukholisa ukusebenzisa iisampulu ze-cellulose ether zezohlwayo ezahlukeneyo kwaye zongeze kudaka lwesamente ngokulandelelanayo. Ngokulawula ezinye izinto eziguquguqukayo (ezifana nomlinganiselo wamanzi-samente, umlinganiselo we-aggregate, ixesha lokuxuba, njl.), Kuphela ukuguqulwa kwe-ether ye-cellulose kutshintshiwe. Uthotho lweemvavanyo zamandla, kubandakanywa amandla acinezelayo kunye nokomelela okuguquguqukayo, emva koko kwenziwa.
Iziphumo zovavanyo zidla ngokubonisa:
Iisampulu ze-ether ze-cellulose ezine-fineness ephezulu zinokuphucula kakhulu amandla oxinzelelo kunye namandla aguquguqukayo odaka kwinqanaba lokuqala (njengeentsuku ze-3 kunye neentsuku ze-7).
Ngokwandiswa kwexesha lokunyanga (njengeentsuku ze-28), i-ether ye-cellulose ene-fineness ephezulu inokuqhubeka nokubonelela ngokugcinwa kwamanzi kunye nokudibanisa, kubonisa ukukhula okuzinzile.
Umzekelo, kuvavanyo, amandla acinezelayo we-cellulose ethers kunye ne-fineness ye-80 mesh, 100 mesh, kunye ne-120 mesh kwiintsuku ezingama-28 yayiyi-25 MPa, 28 MPa, kunye ne-30 MPa, ngokulandelelanayo. Oku kubonisa ukuba okukhona kuphezulu ukucoleka kwe-cellulose ether, kokukhona amandla acinezelayo odaka.
Ukusetyenziswa okusebenzayo kwe-cellulose ether fineness optimization
1. Lungisa ngokwendawo yokwakha
Xa kwakhiwa kwindawo eyomileyo okanye phantsi kweemeko zobushushu obuphezulu, i-cellulose ether ene-fineness ephezulu inokukhethwa ukunyusa ukugcinwa kwamanzi kudaka kunye nokunciphisa ilahleko yamandla ebangelwa kukuphuma kwamanzi.
2. Sebenzisa kunye nezinye izongezo
I-ether ye-cellulose ene-fineness ephezulu ingasetyenziselwa kunye nezinye izongezo (ezifana nezinciphisi zamanzi kunye nee-agent zokungenisa umoya) ukuqhubela phambili ukunyusa ukusebenza kodaka. Ngokomzekelo, ukusetyenziswa kokunciphisa amanzi kunokunciphisa umlinganiselo we-samente yamanzi kunye nokwandisa ubuninzi bomdaka, ngelixa i-cellulose ether inikeza ukugcinwa kwamanzi kunye nemiphumo yokomeleza. Ukudibanisa kwezi zibini kunokuphucula kakhulu amandla omdaka.
3. Ukuphucula inkqubo yokwakha
Ngexesha lenkqubo yokwakha, kuyimfuneko ukuqinisekisa ukuba i-cellulose ether iyachithwa ngokupheleleyo kwaye ihlakazekile. Oku kunokufezekiswa ngokunyusa ixesha lokuxuba okanye ukusebenzisa izixhobo ezifanelekileyo zokuxuba ukuqinisekisa ukuba i-fineness advantage ye-cellulose ether isetyenziswa ngokupheleleyo.
Ukulunga kwe-ether ye-cellulose kunempembelelo ebalulekileyo kumandla omdaka. I-ether ye-cellulose enobuhle obuphezulu inokudlala ngcono indima yokugcina amanzi, ukujiya kunye nokuphucula ukudibanisa i-interface, kunye nokuphucula amandla okuqala kunye neempawu zexesha elide zodaka. Kwizicelo ezisebenzayo, ukulungiswa kwe-ether ye-cellulose kufuneka kukhethwe ngokufanelekileyo kwaye kusetyenziswe ngokwemiqathango ethile yokwakha kunye neemfuno zokuphucula ukusebenza kodaka kunye nokuphucula umgangatho weprojekthi.
Ixesha lokuposa: Jun-24-2024