Ma cellulose ethers ndi gulu la ma polima olemera kwambiri osungunuka ndi madzi ochokera ku cellulose. Zakhala zikugwiritsidwa ntchito kwambiri pantchito yomanga ngati zowonjezera zopangira zinthu zopangidwa ndi simenti komanso gypsum. Mwa iwo, hydroxypropyl methylcellulose (HPMC) ndi imodzi mwama cellulose ethers ofunikira kwambiri pa putty.
Monga katswiri wopanga HPMC, tidzakufotokozerani ntchito ya cellulose ether mu putty. Tikukhulupirira kuti positi iyi ili ndi zidziwitso zothandiza kwa omwe ali ndi chidwi ndi mutuwu.
1. Kusunga madzi
Imodzi mwa ntchito zazikulu za cellulose ether kwa putty ndikusunga madzi. Putty ndi zinthu zonga phala zomwe zimagwiritsidwa ntchito kudzaza mipata ndi ming'alu pamalo monga makoma, kudenga ndi pansi. Madzi ndi chinthu chofunikira kwambiri pakupanga ma putty chifukwa amathandizira kusungunula zosakaniza ndikupereka magwiridwe antchito. Komabe, madzi ochulukirapo angapangitse kuti putty iume ndikuchepa msanga, zomwe zimapangitsa kuti pakhale kusweka komanso kutsika kwapamwamba.
Cellulose ether, makamaka HPMC, imapanga mawonekedwe ngati gel osakaniza ndi madzi, zomwe zingapangitse kusungirako madzi kwa putty. Magulu a hydrophilic a HPMC amatha kuyamwa mamolekyu amadzi ndikuwaletsa kuti asatuluke mwachangu. Izi zimalola nthawi yayitali yogwira ntchito komanso mawonekedwe osasinthika a putty.
2. Kuwongolera magwiridwe antchito
Ntchito ina yofunika ya cellulose ether kwa putty ndikuwongolera magwiridwe antchito ake. Kugwira ntchito kumatanthauza kumasuka komwe putty amagwiritsidwa ntchito ndikuwumbidwa kuti apeze malo osalala. Ma cellulose ether amatha kupititsa patsogolo kusungunuka ndi kufalikira kwa putty pochepetsa kukangana pakati pa tinthu tating'onoting'ono ndikuwonjezera kutsekemera kwadongosolo.
Kuphatikizika kwa ma cellulose ethers ku putties kumachepetsanso kutsekeka kwa mpweya komwe kumachitika chifukwa cha kusakanikirana, komwe kungayambitse malo osagwirizana komanso kusamata bwino. Kugwiritsa ntchito ma cellulose ethers kumapangitsa kusalala komanso kusasinthika kwa putty, zomwe zimapangitsa kuti pakhale ntchito yabwino komanso kumaliza kowoneka bwino.
3. Wonjezerani kumamatira
Phindu lina la cellulose ether kwa putty ndikuwonjezera kumamatira. Ma putty amagwiritsidwa ntchito kudzaza mipata ndi ming'alu, komanso kupanga malo osalala a utoto kapena zomaliza zina. Chifukwa chake, putty iyenera kumamatira ku gawo lapansi ndikupereka mgwirizano wamphamvu.
Ma cellulose ether, makamaka HPMC, amatha kuwongolera kumamatira kwa putty popanga filimu pamwamba pa gawo lapansi. Kanemayu amathandizira kulumikizana pakati pa putty ndi gawo lapansi ndipo amathandizira kudzaza zolakwika. Izi zimabweretsa mgwirizano wamphamvu komanso kutha kolimba.
4. Chepetsani kuchepa
Shrinkage ndi vuto lofala ndi putty, chifukwa limatha kuyambitsa kusweka komanso kutsika kwapamwamba. Ma cellulose ethers angathandize kuchepetsa kuchepa kwa putty mwa kukonza kusungika kwa madzi komanso kugwira ntchito kwa putty. Madzi amasanduka nthunzi pang'onopang'ono, zomwe zimapangitsa kuti putty awoneke bwino lomwe limathandiza kupewa ming'alu ndi ming'alu kupanga poyanika.
Kuphatikiza apo, ether ya cellulose imathanso kuchepetsa kutsika kwa pulasitiki kwa putty, ndiko kuti, kuchepa komwe kumachitika panthawi yoyambira. Katunduyu ndi wofunikira kwambiri pakuyika ma putties mwachangu, chifukwa amathandizira kuti kukhulupirika kwa pamwamba ndikulepheretse kupanga ming'alu.
5. Kupititsa patsogolo kukhazikika
Pomaliza, ma cellulose ethers amatha kukulitsa kukhazikika kwa putty mwa kukulitsa kukana kwake kuzinthu zachilengedwe monga kusintha kwa kutentha, chinyezi ndi kuyabwa. Mafilimu opanga mafilimu a cellulose ether angapereke chotchinga chotetezera pa putty pamwamba kuti asalowetse madzi ndi zowononga zina.
Kuphatikiza apo, ether ya cellulose imathanso kupititsa patsogolo mphamvu yosunthika komanso kulimbikira kwa putty, kupangitsa kuti ikhale yosamva kusweka ndi kuphulika. Katunduyu ndi wofunikira makamaka pamapulogalamu omwe ma putty amagwiridwa pafupipafupi kapena kukhudzidwa, monga pokonza kapena zomaliza zokongoletsa.
Pomaliza
Pomaliza, ma cellulose ethers, makamaka HPMC, ndiwofunikira kwambiri pakuwonjezera magwiridwe antchito. Ntchito zawo zimaphatikizapo kusunga madzi, kusinthika kwachangu, kumamatira, kuchepetsa kuchepa komanso kukhazikika. Kugwiritsa ntchito ma cellulose ethers kumathandizira kuwongolera bwino komanso magwiridwe antchito a putty, zomwe zimapangitsa kumaliza bwino komanso moyo wautali. Monga akatswiri opanga HPMC, tadzipereka kupereka makasitomala apamwamba kwambiri a cellulose ether ndi chithandizo chaukadaulo.
Nthawi yotumiza: Jul-20-2023