Cellulose ether ndi chowonjezera chodziwika bwino muzomangira, chomwe chimagwiritsidwa ntchito kupititsa patsogolo ntchito yomanga komanso makina amakina amatope. Fineness ndi chimodzi mwazinthu zofunika kwambiri za cellulose ether, zomwe zimatanthawuza kugawa kwake kwa tinthu.
Makhalidwe ndi kagwiritsidwe ka cellulose ether
Ma cellulose ether makamaka amaphatikizapo hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC), ndi zina. Ntchito zawo zazikulu pomanga matope ndi monga:
Kusunga madzi: pochepetsa kutuluka kwa madzi, kukulitsa nthawi ya simenti, komanso kukulitsa mphamvu yamatope.
Kunenepa: Kuchulukitsa kukhuthala kwa matope ndikuwongolera ntchito yomanga.
Limbikitsani kukana kwa ming'alu: Katundu wosunga madzi wa cellulose ether amathandiza kuwongolera kuchepa kwa simenti, potero kuchepetsa kuchitika kwa ming'alu yamatope.
The fineness wa mapadi ether zimakhudza dispersibility ake, solubility ndi dzuwa mu matope, potero zimakhudza ntchito wonse wa matope.
Zotsatira za cellulose ether fineness pa mphamvu yamatope zitha kuwunikidwa kuchokera kuzinthu izi:
1. Mlingo wa kuwonongeka ndi dispersibility
Kusungunuka kwa cellulose ether m'madzi kumagwirizana kwambiri ndi ubwino wake. Ma cellulose ether particles okhala ndi fineness apamwamba amasungunuka mosavuta m'madzi, motero amapanga kubalalitsidwa kofanana. Kugawa yunifolomu kumeneku kumatha kupangitsa kuti madzi azikhala okhazikika komanso akukhuthala mumtundu wonse wamatope, kulimbikitsa kupita patsogolo kofananira kwa simenti ya hydration, ndikuwongolera mphamvu yoyambira yamatope.
2. Mphamvu yosungira madzi
Ubwino wa cellulose ether umakhudza kasungidwe ka madzi. Ma cellulose ether particles okhala ndi fineness apamwamba amapereka malo okulirapo enieni, potero amapanga tinthu tating'ono tomwe timasunga madzi mumatope. Ma micropores awa amatha kusunga madzi bwino, kutalikitsa nthawi ya simenti ya hydration, kulimbikitsa mapangidwe azinthu zamadzimadzi, motero kumapangitsanso mphamvu yamatope.
3. Kulumikizana kwa mawonekedwe
Chifukwa dispersibility wawo wabwino, mapadi etere particles ndi apamwamba fineness akhoza kupanga kwambiri yunifolomu kugwirizana wosanjikiza pakati matope ndi akaphatikiza, ndi kusintha mawonekedwe kugwirizana kwa matope. Izi zimathandiza kuti matope azikhala ndi pulasitiki wabwino koyambirira, kuchepetsa kuchitika kwa ming'alu ya shrinkage, motero kumapangitsa mphamvu zonse.
4. Kukwezeleza kwa simenti hydration
Panthawi ya simenti ya hydration, kupanga zinthu za hydration kumafuna madzi ambiri. Ma cellulose ether okhala ndi fineness apamwamba amatha kupanga zinthu zofananirako za hydration mumatope, kupewa vuto la chinyezi chosakwanira kapena chochulukirapo, kuonetsetsa kuti hydration ikupita patsogolo, ndikuwonjezera mphamvu yamatope.
Kuphunzira moyesera ndi kusanthula zotsatira
Pofuna kutsimikizira zotsatira za ubwino wa cellulose ether pa mphamvu yamatope, kafukufuku wina woyesera anasintha ubwino wa cellulose ether ndikuyesa makina ake amatope mosiyanasiyana.
Mapangidwe oyesera
Kuyeserako nthawi zambiri kumagwiritsa ntchito zitsanzo za cellulose ether za fineness zosiyanasiyana ndikuziwonjezera pamatope a simenti motsatana. Polamulira zosintha zina (monga chiŵerengero cha simenti ya madzi, chiŵerengero cha aggregate, nthawi yosakaniza, etc.), ubwino wa cellulose ether umasinthidwa. Mayesero angapo amphamvu, kuphatikiza mphamvu zopondereza ndi mphamvu zosinthika, amachitidwa.
Zotsatira zoyeserera nthawi zambiri zimawonetsa:
Ma cellulose ether zitsanzo okhala ndi fineness apamwamba amatha kusintha kwambiri mphamvu yopondereza komanso mphamvu yosinthika yamatope kumayambiriro (monga masiku atatu ndi masiku 7).
Ndi kuwonjezereka kwa nthawi yochiritsa (monga masiku 28), cellulose ether yokhala ndi fineness yapamwamba ikhoza kupitiriza kupereka kusungirako madzi abwino ndi kugwirizana, kusonyeza kukula kwamphamvu kwamphamvu.
Mwachitsanzo, pakuyesa, mphamvu yopondereza ya ma cellulose ether okhala ndi fineness ya 80 mesh, 100 mesh, ndi 120 mesh m'masiku 28 anali 25 MPa, 28 MPa, ndi 30 MPa, motsatana. Izi zikuwonetsa kuti kukweza kwa cellulose ether kumapangitsa kuti matope azikhala ndi mphamvu zambiri.
Kugwiritsa ntchito bwino kwa cellulose ether fineness kukhathamiritsa
1. Sinthani molingana ndi malo omanga
Pomanga pamalo owuma kapena kutentha kwambiri, ether ya cellulose yokhala ndi fineness yapamwamba imatha kusankhidwa kuti ipititse patsogolo kusungidwa kwamadzi mumatope ndikuchepetsa kutayika kwa mphamvu komwe kumachitika chifukwa cha kutuluka kwa madzi.
2. Gwiritsani ntchito ndi zina zowonjezera
Ma cellulose ether okhala ndi fineness apamwamba angagwiritsidwe ntchito molumikizana ndi zowonjezera zina (monga zochepetsera madzi ndi mpweya wolowetsa mpweya) kuti apititse patsogolo magwiridwe antchito a matope. Mwachitsanzo, kugwiritsa ntchito zochepetsera madzi kumatha kuchepetsa kuchuluka kwa simenti yamadzi ndikuwonjezera kuchuluka kwa matope, pomwe cellulose ether imapereka kusungirako madzi komanso kulimbitsa. Kuphatikizana kwa awiriwa kumatha kusintha kwambiri mphamvu yamatope.
3. Kukhathamiritsa kwa ntchito yomanga
Panthawi yomanga, ndikofunikira kuwonetsetsa kuti cellulose ether imasungunuka ndikubalalika. Izi zikhoza kutheka poonjezera nthawi yosakaniza kapena kugwiritsa ntchito zipangizo zoyenera zosakaniza kuti zitsimikizire kuti ubwino wa cellulose ether umagwiritsidwa ntchito mokwanira.
Ubwino wa cellulose ether umakhudza kwambiri mphamvu ya matope. Ma cellulose ether okhala ndi fineness apamwamba amatha kugwira bwino ntchito yosunga madzi, kukhuthala ndikuwongolera kulumikizana kwa mawonekedwe, ndikuwongolera mphamvu zoyambira komanso zida zamakina amatope. M'malo ogwiritsira ntchito, ubwino wa cellulose ether uyenera kusankhidwa moyenerera ndikugwiritsidwa ntchito molingana ndi momwe zimapangidwira komanso zofunikira kuti ziwongolere bwino ntchito yamatope ndikuwongolera ntchito yabwino.
Nthawi yotumiza: Jun-24-2024