Kumatira kwa matayala a sile ndiye ntchito yayikulu kwambiri ya matope osakanikirana. Ndi mtundu wa organic kapena osakanikirana ndi simenti ngati zinthu zazikulu zoyambira ndi zowonjezera zoyambira, wosunga madzi, wokhazikika wamadzi, woyambirira wambiri. kusakaniza. Nthawi zambiri, zimangofunika kusakanikirana ndi madzi. Poyerekeza ndi simenti wamba ya simenti, imatha kukonza mphamvu yapakati pa nkhani yoyang'anizana ndi gawo lapansi, ili ndi malo abwino odana ndi kukana kwa madzi abwino komanso kukana madzi. Amagwiritsidwanso ntchito zokongoletsera za mkati ndi ma tazatchi, matailosi pansi ndi zida zina zokongoletsa. Amagwiritsidwa ntchito kwambiri pokongoletsa makoma amkati ndi kunja, pansi, mabafa, makhitchini, ndi zina zambiri. Ndi matayala ambiri. Zinthu zomangira.
Nthawi zambiri, tikamaweruza magwiridwe antchito a tiles, tiyenera kusamala ndi mphamvu zake ndikutsegula powonjezera ntchito yawo komanso luso lakelo. Kuphatikiza pa kukhudza zinthu zamphongo za rateni, monga kusalala kogwirira ntchito, mpeni womata, ethel, cellulose ether imathandizira mphamvu yamakina a matabwa a matailosi.
1. Nthawi yotseguka
LitiKubwezeretsedwa Polimer Polyderndicellulose etherCoexist mu matope onyowa, mitundu ina ya data imawonetsa kuti ufa wamphamvu umakhala ndi mphamvu ya sinic yolumikizidwa ndi mankhwala a sinrate, ndipo ether ether amapezekanso m'madzi am'mimba, omwe amakhudzanso zambiri. Maonekedwe ndikukhazikitsa nthawi ya matope. Mavuto am'madzi a cellulose ndi okulirapo kuposa ufa wa mphira, ndikupindulitsa kwa masentimita angapo pa mawonekedwe a matope omwe ali pachiwopsezo cha pansi ndi ether.
Mu matope onyowa, madzi mu matope amatuluka, ma cellulose ether amalemedwa pansi, ndipo kanema amapangidwa pansi pa matope mkati mwa mphindi 5, zomwe zimachepetsa kuchuluka kwa matope, pomwe madzi ambiri amawuma kuchokera matope. Gawo la kusamuka kwa woonda woonda wa osanjikiza, kutsegulira koyamba kwa nembane, ndipo kusamuka kwamadzi kumadzetsa ma cellulose kukhala pamwamba pa matope.
Mapangidwe a filimu a cellulose padziko lapansi ali pamwamba pa matope ali ndi mphamvu yayikulu pakuchita kwa matope:
Choyamba, kanema wopangidwa ndi wowonda kwambiri, udzasungunuka kawiri, satha kuchepetsa madzi, kuchepetsa mphamvu.
Chachiwiri, kanema wopangidwa ndi wandiweyani, ndende ya maselo a cellulose mu matope a matope omwe amayendamo ndi okwera, ndipo ma visy ndi akulu. Pamene matayala aikidwa, sizophweka kuthyola filimuyo.
Kuchokera pamenepa, akumvetsetsa kuti filimuyi imapanga mawonekedwe a cellulose ether kukhala ndi chikopa chachikulu panthawi yotseguka. Mtundu wa etherse ether (hpmc,Hemo, MC, ndi zina.
2, mphamvu
Kuphatikiza pa kupatsira mitundu yosiyanasiyana yophunzitsidwa pamwambapa ndi matope, cellulose ether amabwezera kinetics ya simenti. Kubweza kumeneku kumachitika makamaka chifukwa cha Adsorption ya ma cellulose ethel mamolekyulu opanga michere yosiyanasiyana ya michere, koma nthawi zambiri ma celluor ndi calcium hydroxide. Pa mankhwala, samakonda kuvomerezedwa pa gawo loyambirira la mineral. Kuphatikiza apo, chifukwa chowonjezeka kwa mafayilo a pore, cellulose emeul emeul emes achepetsa kusuntha kwa ma ions (CA2 +, 2,)
Mawonekedwe ndi gawo lina lofunikira lomwe limayimira mankhwala a cellulose eder. Monga tafotokozera pamwambapa, maonedwewa amakhudzanso kuchuluka kwamadzi komanso kumapangitsanso kuti pakhale matope omwe mwatsopano. Komabe, maphunziro oyesera awona kuti mamasukidwe a cellulose ether ali ndi zotsatira za hydration kinetics. Kulemera kwa maselo sikuthandiza kwambiri pa hydration, komanso kusiyana kwakukulu pakati pa zolemera zosiyana ndi mphindi 10 zokha. Chifukwa chake, kulemera kwa maselo si gawo lofunikira kuti muchepetse simenti hydration.
"Kugwiritsa ntchito matope ogulitsa matope owuma ndi matope owuma" kumanenanso kuti kutaya kwa cellulose ethel ethel ethelu kumatengera kapangidwe kake. Zomwe zimachitika mwachidule zomwe zimadziwika kuti ndi za Mic, zokwera kwambiri za methylation, zocheperako zobwezeredwa kwa cellulose ether ether ether. Kuphatikiza apo, ma hydrophilic zolowetsa (monga zopindika kwa hec) ndizosangalatsa kuposa ma hydrophobic zolowetsa (monga zopindika kwa mh, Michec). Zobwezera zobwezeretsa za cellulose ether zimakhudzidwa kwambiri ndi magawo awiri a mtundu ndi kuchuluka kwa gulu lam'munsi.
Kuyesera kwathu ka kachitidwe ka kachitidwe ka kachitidwe ka kachitidwe ka kachitidwe ka malo opezeka kumasemphana ndi gawo lofunikira mu mphamvu yamakina omatira. Tinawunikira magwiridwe antchito a HPMC omwe ali ndi madigiri osiyanasiyana a kulowetsa, ndikuyesa ma cellulose a eleulse. Mphamvu ya makina omata a tile, Chithunzi 2 ndi Chithunzi 3 ndizovuta za kusintha kwa methoxy (ms) zokhala ndi mphamvu ya matailosi.
Maonekedwe 2
Maonekedwe 3
Poyesedwa, timaganiziraHydroxypropyl methyl cellulose (hpmc), yomwe ili mbali yovuta. Chifukwa chake, tiyenera kuyika ziwerengero ziwirizo limodzi. Kwa HPMC, timafunikira kuperekera kuwonetsetsa kuti madzi akusungunuka ndi kuwala. Tikudziwa zomwe zili m'malo am'mbuyomu. Zimasankhanso kutentha kwa gelc, komwe kumatsimikizira chilengedwe chomwe HPMC imagwiritsidwa ntchito. Chifukwa chake, zomwe zili mu HPMC yomwe imagwiritsidwa ntchito kawirikawiri imapangidwanso m'njira zosiyanasiyana. Momwe mungaphatikizire memoxy ndi hydroxyprophoxy magulu omwe ali pamtunduwu kuti mukwaniritse zotsatira zabwino ndi zomwe timaphunzira. Chithunzi 2 chikuwonetsa kuti mkati mwa mitundu ina, kuwonjezeka kwa methoxyl komwe kumapangitsa kuti chikakoke chikakomerere, pomwe hydroxyprophoroxyl yomwe ingachulukitse komanso mphamvu yokoka. Kwa nthawi yotseguka, pali zotsatirazi.
Post Nthawi: Dec-18-2018