Ufa wa putty umagwiritsidwa ntchito makamaka pokhazikitsa ndikukonza makoma pomanga. Komabe, ufa wachikhalidwe umakonda kusungunuka ndikuwoloka ndikadzazidwa ndi madzi, kukhudzana ndi ntchito yomanga ndi moyo wanyumbayo. Hydroxypyl methylcellulose (hpmc), monga chowonjezera chofunikira, chitha kusintha madzi kukana madzi a punty.
1. Mankhwala ndi ntchito zoyambira za HPMC
Hydroxypropyll Methyllulose (hpmc) ndi ma en-celly celluuse ether ether etch ndi ntchito zosiyanasiyana monga kukula, kupanga mafilimu, kunyowetsa, ndikunyowa. Amagwiritsidwa ntchito kwambiri pazomangira, mankhwala, chakudya ndi minda ina. Makina a HPMC ali ndi magulu a hydrophilic hydroxyl (-Oh) ndi hydrophobic ma hydrocarbon a hydrocarbon (-3,-) Zinthu izi zimathandizira kuti HPMC ikhale yothetsera ma colloidal mayankho a colloidal m'madzi ndikupanga mawonekedwe am'madzi omwe ali ndi ma network pakuchiritsa, potero kukonza zinthu zakuthupi.
2. Makina kuti musinthe madzi
2.1. Kukula
HPMC imatha kuwonjezera mawiti a putty ufa wosalala, kulola kusalala kuti apange dongosolo loyimitsidwa kwambiri m'madzi. Mbali inayi, kukula kwake kumathandizanso kuyendetsa bwino kwa slurry ndikuchepetsa chodabwitsa cha kuchepetsedwa ndi magazi; Kumbali inayi, popanga mawonekedwe owoneka bwino, hpmc amachepetsa mamolekyulu amadzi, potengera mphamvu ya ufa wa punty. Kutsutsana ndi madzi atachirikiza.
2.2. Mawonekedwe opanga filimu
Pa nthawi yochiritsa ufa wa putty, hpmc apanga filimu yowonda pakati pa simenti, madzi ndi zosakaniza zina. Inmbrane iyi ili ndi kuchuluka kwa madzi otsitsa madzi ndipo amatha kuletsa kulowa kwa chinyezi. Kanema wopangidwa ndi HPMC imatha kusintha mphamvu zake ndikuvala zakuthupi, kuyikanso madzi kukana madzi a punty.
2.3. Sinthani kukana
Mwa kukonza soluc modulus ndi shra, mawonekedwe a ufa wa putty, hpmc amatha kuchepetsa chiopsezo chowonongeka chifukwa cha kusintha kwa shrinkage ndi kutentha. Kuchepetsa kupezeka kwa ming'alu kudzathandizanso kukonza madzi kukana ufa wa punty, chifukwa ming'alu ikhala njira yayikulu yamadzi kulowa m'madzi.
2.4. Kuwongolera kwa Matenda Othandizira
HPMC imatha kuchedwetsa kuchuluka kwa simenti, kulola ufa kuti ufa kukhala ndi nthawi yayitali kuti mudziutse komanso kuwumitsa nthawi yolimba. Kuchita pang'onopang'ono kumathandiza kupanga mivi mitropteructionructionrusteliction, poyerekeza ndi kachilombo kakang'ono ka ufa ndi kukonza magwiridwe ake a zinthuzo.
3. Kugwiritsa Ntchito Mphamvu ya HPMC mu ufa
3.1. Sinthani magwiridwe antchito
HPMC imachepetsa mphamvu ya sheet, ndikupangitsa kuti isakhale yosavuta kugwira ndi ntchito yosalala. Chifukwa cha kuchuluka kwake kwakukulu ndi madzi osasunga madzi, putty ufa umatha kukhala ndi malo oyenera otetezeka akamagwiritsa ntchito, kuchepetsa kupezeka kwa ming'alu youma ndikuwongolera mtundu wa zomangamanga.
3.2. Kumathandizira makina omaliza a zinthu zomalizidwa
Mafuta a putty adawonjezera ndi HPMC ili ndi mphamvu zapamwamba komanso zomata atachiritsa, kuchepetsa kuthekera kwa kusweka ndi kusambira. Izi zimawongolera kukongola kwathunthu kwa nyumbayo.
3.3. Sinthani madzi kukana zophimba komaliza
Kuyesera kumawonetsa kuti mphamvu ya putty yowonjezeredwa ndi HPMC imachepetsa pang'ono atanyowa m'madzi, ndipo zikuwonetsa bwino hydrolysis ndi kukhazikika. Izi zimapangitsa ufa wogwiritsa ntchito bwino pogwiritsa ntchito bwino ma hpmc omanga m'malo otentha.
4. Kugwiritsa ntchito njira mosamala
Ngakhale HPMC imathandiza kwambiri kukonza madzi kukana ufa wa punty, mfundo zotsatirazi zikuyenera kudziwa ntchito zothandiza:
4.1. Sankhani Mlingo moyenerera
Mlingo wa HPMC iyenera kusinthidwa molingana ndi njira ndi zofunikira pakupanga ufa. Kugwiritsa ntchito kwambiri kumatha kupangitsa kuti malo otsekeseke akhale owoneka bwino kwambiri, akukhudza ntchito zomanga; Kugwiritsa ntchito kokwanira sikungathandize kukulitsa zotsatira zopangidwa ndi mawonekedwe.
4.2. Synergy yokhala ndi zina zowonjezera
HPMC imagwiritsidwa ntchito molumikizana ndi cellulose ina ya cellulose, ufa wa latedx, pulasitala, pulasitala ndi zina zowonjezera kuti mukwaniritse bwino. Kusankhidwa koyenera ndikufananitsa zowonjezera izi kumatha kukonza magwiridwe ake a punty ufa.
4.3. Kuwongolera kutentha ndi chinyezi
Mphamvu zam'madzi za HPMC zitha kukhudzidwa mukamagwiritsa ntchito kutentha kwambiri kapena chinyezi chochepa. Ntchito yomanga iyenera kuchitika pansi pa kutentha kwake komanso chinyezi momwe mungathere, ndikuyenera kulipidwa kuti musunge chinyezi.
HPMC moyenera kumasintha madzi kukana ufa wa putty kudzera pamawu angapo monga kukula, kuwongolera kukana kwa hydration kukhazikika kwa malo achinyontho. Izi sizingosintha bwino mtundu ndi luso la ntchito yomanga, komanso imathandizira kuti nyumbayo ikhale. Pogwiritsa ntchito, kusankha koyenera komanso kugwiritsa ntchito kwa HPMC ndi zina zowonjezera kumatha kukulitsa magwiridwe antchito a putty ndikukwaniritsa zotsatira zapamwamba.
Post Nthawi: Jun-26-2024