Muzokongoletsera zomangira, putty ndiye chinthu chofunikira kwambiri pakukweza khoma ndi zoyambira, zomwe zimagwirizana mwachindunji ndi mtundu wa zomangamanga ndi kukongoletsa kwa zokutira zotsatizana, zithunzi zamapepala ndi zomaliza zina. Pofuna kupititsa patsogolo ntchito yomanga ndikugwiritsa ntchito ntchito ya putty, gawo lina lacellulose etherzowonjezera nthawi zambiri zimawonjezeredwa ku ndondomeko yake. M'zaka zaposachedwa, ether yosinthidwa ya cellulose pang'onopang'ono yakhala chinthu chofunikira kwambiri pakupanga putty chifukwa chakuchita bwino kwambiri.
1. Chidule cha ma ether osinthidwa a cellulose
Ma cellulose ether ndi gulu la mankhwala osungunuka m'madzi kapena otayika a polima opangidwa ndi etherifying ndikusintha gawo lamagulu a hydroxyl a cellulose yachilengedwe ndi njira zama mankhwala. Common cellulose ethers monga hydroxypropyl methylcellulose (HPMC), methyl cellulose (MC), sodium carboxymethyl mapadi (CMC-Na), etc. otchedwa "zosinthidwa" mapadi etero amatanthauza kumayambiriro zinchito m'malo kapena lamulo la kapangidwe kake pamaziko a zofunika mapaipi a cellulose, etc. kuti akwaniritse bwino zomwe zimafunikira pakugwirira ntchito kwazinthu zomanga.
2. Njira yochitira zinthu zosinthidwa za cellulose ether mu putty
Wall putty nthawi zambiri amapangidwa ndi zinthu zachilengedwe monga ufa wa laimu, simenti, ufa wa talcum, ndi zina. Zidazi ndizosavuta kutsitsa, kuwononga, kusweka kapena kusagwira bwino ntchito yomanga pambuyo powonjezera madzi ndi kusonkhezera. Pambuyo powonjezera ether yosinthidwa ya cellulose, imagwira ntchito zotsatirazi mu putty:
Kusungidwa kwa madzi: Kusinthidwa kwa cellulose ether kumakhala ndi mayamwidwe amphamvu kwambiri amadzi komanso kusunga madzi, omwe amatha kutseka madzi mwamphamvu, kuteteza madzi kuti asatuluke mwachangu kapena kutengeka ndi gawo loyambira pakumanga, potero kuwonetsetsa kuti putty imakhala ndi nthawi yokwanira ya hydration reaction, kuwongolera mphamvu yolumikizana ndikuchepetsa chiopsezo chosweka.
Kupititsa patsogolo ntchito yomanga: Cellulose ether imatha kupatsa ma putty kutsetsereka kwabwino kwambiri komanso kukwapula, kuchepetsa kukana pakumanga, ndikupangitsa kuti zomangamanga zikhale zosavuta komanso zosavuta. Nthawi yomweyo, kukulitsa kwake kumathanso kupititsa patsogolo kusungunuka ndi kuyimitsidwa kwa putty, ndikuletsa zinthuzo kuti zisamire ndi delamination.
Kupititsa patsogolo mphamvu yomangirira: Mapangidwe abwino a maukonde amapangidwa pakati pa ether yosinthidwa ya cellulose ndi simenti ya hydration, yomwe imathandizira kukulitsa kulumikizana kwapakati pakati pa putty ndi gawo loyambira ndikuwongolera kumamatira.
Zabwino kwambiri odana ndi sagging katundu: Good thixotropic katundu kupanga putty kuchepetsa nthawi yomangamanga, ndipo akhoza kupanga lathyathyathya, uniformly wandiweyani ❖ kuyanika, kuwongolera ntchito yomanga bwino ndi zotsatira zomaliza mankhwala.
Kukhazikika ndi kusungirako: Kusinthidwa kwa cellulose ether kumatha kulepheretsa kusanjika, mpweya, ndi kusakanikirana kwa putty panthawi yoyendetsa ndi kusungirako, ndikuwongolera kukhazikika kwa zinthuzo.
3. Njira zosinthira ndi kukhathamiritsa kwa magwiridwe antchito
Njira zosinthira zodziwika bwino zimaphatikizapo kuyambitsa magulu a hydrophobic, kusintha kuchuluka kwa m'malo, ndikuwongolera kagawidwe ka kulemera kwa maselo. Mwachitsanzo, hydrophobically kusinthidwa HPMC (monga HPMC-M) akhoza kupititsa patsogolo kukana madzi ndi ❖ kuyanika wandiweyani wa putty, ndi kulamulira zinthu etherification anachita, mankhwala ndi kutentha gel osakaniza ndi khalidwe rheological akhoza analandira kuti akwaniritse zosowa zomanga za nyengo zosiyanasiyana ndi zinthu m'munsi.
Palinso mankhwala apadera a cellulose ether omwe amapangidwira ntchito zosiyanasiyana, monga kutentha kwa gel osakaniza HPMC oyenera kumanga kutentha kwakukulu, kukhuthala kochepa komanso kusungirako madzi HPMC, ndi zina zotero, kuti akwaniritse zofunikira za msika ndi ndondomeko.
4. Njira zopewera kugwiritsa ntchito
Popanga mapangidwe a putty formula ndi kupanga, mfundo zotsatirazi ziyenera kuzindikirika mukamagwiritsa ntchito ether yosinthidwa ya cellulose:
Kuwongolera kuchuluka kwa kuwonjezera, kawirikawiri 0.2% mpaka 0.5% ya kulemera kwa putty youma ufa; kuchulukirachulukira kungakhudze nthawi yowumitsa ndi ntchito yomatira.
Kusakaniza koyambirira kowuma kuyenera kukhala kofanana ndikugwedezeka ndi madzi kuti muwonetsetse kuti cellulose ether imamwazika kwathunthu komanso yopanda zotupa.
Sankhani mtundu woyenera wa cellulose ether molingana ndi malo omangira (monga kutentha, chinyezi) ndi mtundu wa putty (khoma lamkati, khoma lakunja, mtundu wopanda madzi, ndi zina).
Monga chowonjezera chogwira ntchito ndikuchita bwino kwambiri,kusinthidwa cellulose etherimagwira ntchito yosasinthika komanso yofunikira pakupanga ndi kugwiritsa ntchito putty. Izo osati kwambiri bwino yomanga mosavuta ndi thupi katundu putty, komanso amapereka odalirika ndi kothandiza yothetsera chithandizo khoma m'munsi. Ndi kulimbikitsa mosalekeza kwa zomangamanga zobiriwira ndi malingaliro abwino omanga, kufunikira kwa putty wochita bwino kwambiri kukukulirakulira, ndipo chiyembekezo chogwiritsa ntchito ma cellulose ether osinthidwa pagawo la zida zomangira chidzakhala chokulirapo.
Nthawi yotumiza: May-15-2025