Kodi chiŵerengero cha HPMC Hydroxypropyl methyl cellulose ndi simenti ndi chiyani?
Dongo lopanda madzi lopangira uinjiniya, mawonekedwe ake amadalira kulemera kwake kwazinthu zopangira: Konkire 30-340, zomangamanga zaumisiri zinyalala ufa wa njerwa 40-50, lignin fiber 20-24, calcium formate 4-6, hydroxypropyl methyl cellulose 7-9, silicon carbide powder 40-45 powder hydrndu20, 10-45 powder 10-12, youma waukulu mzinda silt ufa 30-35, Datong mzinda nthaka 40-45, zotayidwa sulphate 4-6, carboxymethyl Base wowuma 20-24, kusinthidwa zipangizo nanotechnology mpweya ufa 4-6, madzi 600-650; Mtondo wosakanizidwa ndi madzi wamtunduwu uli ndi kutentha kwamphamvu, kukana moto, kumangika mwamphamvu ndi khoma, kulimba mtima, kulimba mtima, kukana kukalamba bwino, kuteteza chilengedwe, kutetezedwa bwino kwa chinyezi, kukana ming'alu, kupewa kugwa. Lero tikambirana za kukhuthala kwa hydroxypropyl methyl cellulose aqueous solution ndi mbali ziti? Tiyeni tiphunzire izo.
1. Kulemera kwa maselo, kutentha kwa njira yamadzimadzi, kudula ndi njira yoyesera ya cellulose ether; 2. Kutentha kwa kutentha kwa galasi, kumapangitsa kuti thupi likhale lolemera kwambiri, kukhuthala kwa yankho kumakhala kokwezeka; 3. Zomwe zili pamwamba pa cellulose ether, ndipamwamba kukhuthala kwa njira yothetsera vutoli, kotero pakukhazikitsidwa kwa ntchitoyo tiyenera kumvetsera kuchuluka kwa kuphatikizika koyenera, kuteteza kuphatikizika ndipamwamba kwambiri, ndikukhudza mwachindunji makhalidwe a matope a simenti ndi simenti; 4. Monga njira zambiri zothetsera, kukhuthala kudzachepanso ndi kuwonjezeka kwa kutentha, kuphatikizapo apamwamba omwe ali ndi cellulose ether, kuwonongeka kwakukulu kwa kutentha; Kuphatikiza apo, kukhuthala kwenikweni kumasiyanasiyananso malinga ndi kuchuluka kwa madzi omwe amagwiritsidwa ntchito pa simenti ya epoxy.
Hydroxypropyl methyl cellulose amadzimadzi njira mamasukidwe akayendedwe akayendetsedwe komanso akhoza kutumikira monga kugwirizana kiyi kwa ndemanga pa makhalidwe a mapadi efa, ndi apamwamba mamasukidwe akayendedwe a amadzimadzi njira, ake wandiweyani wa epoxy simenti zipangizo ndi bwino, kumbuyo kwa katundu mbale gelling, koma ngati mamasukidwe akayendedwe ndi lalikulu kwambiri, kuvulaza epoxy chuma nthawi yomweyo madzimadzi simenti. Ponena za matope ena odzipangira okha omwe ali ndi madzi ambiri, kukhuthala kwa cellulose ether kudzafotokozedwa kukhala kotsika.
Ma cellulose ether amadzimadzi yankho ndi pseudoplastic thupi, ife mu siteji ya posachedwapa kudziwika kwa kumeta ubweya mlingo ndi waukulu, mamasukidwe akayendedwe ndi ang'onoang'ono.
Choncho, mwachidule ndi: ndi kugwirizana kwa simenti matope adzakhala yafupika ndi mphamvu kunja, amene ali opindulitsa kwa zomangamanga zomangamanga kumbuyo, koma mapadi etere amadzimadzi njira mu nkhani ya otsika kwambiri ndende mtengo, zidzachitika makhalidwe a madzi sanali Newtonian, M'malo mwake, pamene ndende mtengo chiwonjezeke, njira madzi zidzachitika pseudoplastic madzi makhalidwe.
Kusunga madzi kuchokera ku hydroxypropyl methyl cellulose ndi chimodzi mwazinthu zofunika kwambiri za hydroxypropyl methyl cellulose. Kuchuluka kwa evaporation kwa madzi mumatope osakanikirana ndi pulasitala kumakhudzidwa ndi kutentha kwa mpweya, kutentha ndi kuthamanga kwa mpweya. Chifukwa chake, munyengo zosiyanasiyana, kuphatikiza hydroxypropyl methyl cellulose kuchuluka komweko kwamadzi amadzimadzi kumakhala ndi zosiyana.
Nthawi zambiri, kukwezeka kwa mamasukidwe a hydroxypropyl methyl cellulose ndikomwe kumapangitsa kuti kusungirako madzi kukhale kwabwinoko, koma kuvulaza kwa mamasukidwe akayendedwe kakusungirako madzi kudzachepetsedwa pambuyo poti mamasukidwe akayendedwe apitilira 100,000 Mpa. s. Pamene kukhuthala kwa HYDROXYpropyl methyl cellulose kupitilira 100,000, kuchuluka kwa madzi osungirako kumatha kuwongolera kwambiri pakuwonjezera kuchuluka kwa hydroxypropyl methyl cellulose.
Pomanga mwatsatanetsatane, mphamvu yosungira madzi ya slurry imatha kusinthidwa posintha kuchuluka kwa hydroxypropyl methyl cellulose. Mankhwala a Hydroxypropyl methyl cellulose amatha kuthetsa vuto la kusunga madzi pansi pa kutentha kosalekeza. M'nyengo yotentha yopitilira, makamaka m'malo otentha komanso otopetsa komanso kupanga chromatography kumbali yadzuwa, HYDROXYpropyl methyl cellulose yapamwamba imafunika kuti pakhale kusungirako madzi kwa slurry.
Mkulu khalidwe la hydroxypropyl methyl mapadi, ali bwino bwino, tertiary butyl ndi hydroxypropyl mpweya magulu zinchito pamodzi CHIKWANGWANI maselo unyolo dongosolo olowa kugawa, akhoza kukhala methyl aldehyde gulu ndi mpweya, ndi khalidwe la madzi a digito mawonekedwe covalent zomangira akhoza, kukhala omangidwa madzi ndi madzi a kubalalitsidwa, ndiye mogwira kulamulira madzi kutentha kutentha chifukwa cha kutentha kwapamwamba kwambiri.
Mkulu khalidwe la hydroxypropyl methyl mapadi angagwirizane lotayirira ndi malonda dziko mu matope osakaniza ndi pulasitala mankhwala, ndi onse olimba particles chotupa, yonyowa pokonza, ozizira, ndi kupanga wosanjikiza filimu, chinyezi mu zolimbitsa yaitali pang'onopang'ono kumasulidwa m'munsi, ndi isanayambike organic pawiri kusakanizikana wa hydration anachita, ndiye zimatsimikizira kugwirizana kwa zopangira mphamvu compressive ndi khumi mphamvu. Mu kupitiriza kutentha chilimwe ntchito yomanga Choncho, kufika madzi kwenikweni, ayenera mogwirizana ndi Chinsinsi cha kuchuluka ndi khalidwe la mankhwala hydroxypropyl methyl mapadi, apo ayi, adzasonyeza wotopetsa mofulumira kwambiri ndi kuchititsa osakwanira hydration, kuchepetsa compressive mphamvu, kugawanika, popped makhalidwe monga metope chopanda ng'oma ndi kukayikira, komanso pamodzi ndi wogwira ntchito yomanga movutikira. Pamene kutentha kumatsika, kuchuluka kwa hydroxypropyl methyl cellulose kumatha kuchepetsedwa pang'onopang'ono ndipo zotsatira zomwezo zosungira madzi zimatha kutheka.
Ngati mapadi efa si anawonjezera, ndi chromatography watsopano simenti matope mwamsanga youma, kupanga konkire sangathe hydrated mwachibadwa, chifukwa simenti matope sangakhale olimba primed ndi kupeza bwino adhesion. Pa nthawi yomweyi, kuwonjezera pa cellulose ether kumapangitsa matope a simenti kukhala ndi ductility wabwino komanso kusinthasintha, komanso kumapangitsa kuti pakhale mphamvu yolumikizirana yamatope a simenti.
1, hydroxypropyl methyl cellulose kukula kwa tinthu
Kukula kwa tinthu ta cellulose ether kumawononga kusungunuka kwake. Kuchuluka kwa cellulose ether ndiko, kufulumira kwa kusungunuka kwake m'madzi ndi kukwezera makhalidwe ake osunga madzi. Chifukwa chake, kukula kwa tinthu ta cellulose ether kuyenera kuphatikizidwa pakufufuza kwa chimodzi mwazinthu zake. Ambiri, mapadi etere tinthu kukula 80 mauna zochokera.
2, hydroxypropyl methyl cellulose youma popanda mphamvu yokoka
Dry manic palibe mphamvu yokoka, imatanthawuza kutentha kwa manic manic cellulose efa, kutayika kwa khalidwe la mankhwala kunakhala chitsanzo choyambirira cha khalidwe lachitsanzo. Pakuti ena khalidwe la mapadi efa mu youma popanda mlingo mphamvu yokoka ndi mkulu kwambiri, kuchepetsa zigawo zikuluzikulu mu mapadi efa, kuvulaza zotsatira zenizeni za ntchito makampani kumtunda, komanso kusintha mtengo wogula. Kawirikawiri youma cellulose ether popanda mphamvu yokoka si upambana 5.0%.
3, hydroxypropyl methyl cellulose potaziyamu thiocyanate phulusa
Pakuti ena khalidwe la mapadi etere mu phulusa zili kwambiri, kuchepetsa mapadi efa mu zigawo zikuluzikulu, kuvulaza zotsatira zenizeni za ntchito makampani kumtunda, mapadi etere potaziyamu thiocyanate phulusa zili ndi kuganizira kwambiri makhalidwe ake index mtengo.
4, hydroxypropyl methyl cellulose viscosity
Hydroxypropyl methyl cellulose kusungidwa kwa madzi ndi kukhuthala ndiye chinsinsi chowonjezera simenti ya cellulose cellulose ether mu kukhuthala kwake komanso kuphatikiza kwake.
5, hydroxypropyl methyl cellulose PH mtengo
Kukhuthala kwa zinthu za hydroxypropyl methyl cellulose kumachepa pang'onopang'ono pa kutentha kwakukulu kapena kusungidwa kwa nthawi yayitali, makamaka pazinthu zowoneka bwino kwambiri, chifukwa chake pH iyenera kukhala yochepa. Nthawi zambiri zimanenedwa kuti gulu la PH la cellulose ether liyenera kugwiritsidwa ntchito ngati 5-9.
6. Kutumiza kwa hydroxypropyl methyl cellulose
Ubwino ndi kuipa kwa kutumiza kwa hydroxypropyl methyl cellulose kumatha kukhudza mwachindunji momwe amagwiritsidwira ntchito pazomangira. Zinthu zazikulu zomwe zimawononga kufalikira kwa cellulose ether ndi
1) ubwino wa zipangizo; (2) zotsatira zenizeni za kupha; (3) Kukonzekera kwaukadaulo wopanga; (4) organic zosungunulira kukonzekera; (5) Zotsatira zenizeni za zhonghe.
Malinga ndi momwe ntchito ikugwiritsidwira ntchito, kutumiza kwa cellulose ether kuyenera kukhala kosachepera 80%.
7, hydroxypropyl methyl cellulose akuganiziridwa kutentha
Hydroxypropyl methyl cellulosemu zigawo za simenti monga chinsinsi chowonjezera zomatira, kukhuthala ndi kusungira madzi, kotero kukhuthala ndi kutentha kwa gel ndikofunikira kwambiri index ya hydroxypropyl methyl cellulose. Kutentha kumagwiritsidwa ntchito kuweruza mtundu ndi ndondomeko ya cellulose ether, ndipo mlingo wa m'malo mwa cellulose ether umagwirizana.
8. Kuonjezera apo, mchere ndi zotsalira zidzawononganso kutentha kwa guluu. Pamene kutentha kwa njira yamadzimadzi kumakwera, fiber polima imasowa madzi pang'onopang'ono, ndipo kukhuthala kwa njira yamadzimadzi kumachepa. Pamene zomatira zafika, polima imauma kwathunthu ndipo zomatira zimapangidwa. Choncho, kutentha kwa ntchito kwa mamembala a simenti nthawi zambiri kumakhala pansi pa kutentha koyambirira kwa guluu. Pansi pa muyeso uwu, kutentha kutsika, kukwezeka kwa viscosity, komanso zotsatira zenizeni za viscosification ndi kusunga madzi.
Nthawi yotumiza: Apr-25-2024