Kodi chiŵerengero cha HPMC Hydroxypropyl methyl cellulose ndi simenti ndi chiyani?
Chomangira choteteza madzi chomwe chimateteza madzi, makhalidwe ake amadalira kulemera kotsatira kwa zinthu zopangira zopangidwa: Konkriti 30-340, ufa wa njerwa zomangidwa ndi uinjiniya 40-50, ulusi wa lignin 20-24, calcium formate 4-6, hydroxypropyl methyl cellulose 7-9, ufa wa silicon carbide 40-45, ufa wa calcium hydroxide 10-20, ufa wa brown corundum 10-12, ufa wouma wa silt wa mzinda waukulu 30-35, nthaka ya mzinda wa Datong 40-45, aluminiyamu sulfate 4-6, carboxymethyl Base starch 20-24, zinthu zosinthidwa nanotechnology carbon powder 4-6, madzi 600-650; Chomangira choteteza madzi chomwe chimateteza madzi cha mankhwalawa chili ndi kutentha kwamphamvu, kukana moto bwino, kugwirizana mwamphamvu ndi khoma, mphamvu yokakamiza, kugwira ntchito bwino, kukana kukalamba bwino, kuteteza chilengedwe bwino, kukana chinyezi bwino, kukana ming'alu, kupewa kugwa. Lero tikambirana za kukhuthala kwa yankho lamadzi la hydroxypropyl methyl cellulose, ndipo zonsezi zili ndi mbali ziti? Tiyeni tiphunzire.
1. Kulemera kwa mamolekyulu, kutentha kwa madzi, kuchuluka kwa kudula ndi njira yoyesera ya cellulose ether; 2. Kutentha kwa kusintha kwa galasi kukakhala kwakukulu, kulemera kwa mamolekyulu kumakhala kwakukulu, kukhuthala kwa yankho kumakhala kwakukulu mwachilengedwe; 3. Kuchuluka kwa ether ya cellulose, kukhuthala kwa yankho kumakhala kwakukulu, kotero pakuyika ntchito tiyenera kulabadira kuchuluka koyenera kophatikizidwa, kupewa kuti kuphatikiza kukhale kwakukulu kwambiri, ndikukhudza mwachindunji mawonekedwe a simenti ndi simenti; 4. Monga yankho lalikulu, kukhuthala kudzachepanso ndi kuwonjezeka kwa kutentha, kuphatikiza kuchuluka kwa ether ya cellulose, kuvulaza kwa kutentha kumakulirakulira; Kuphatikiza apo, mphamvu yeniyeni yokhuthala imasiyananso malinga ndi kuchuluka kwa madzi omwe amagwiritsidwa ntchito pa simenti ya epoxy.
Hydroxypropyl methyl cellulose aqueous solution viscosity ingagwiritsidwenso ntchito ngati ulalo wofunikira wofotokozera za makhalidwe a cellulose ether, kukhuthala kwa yankho lamadzimadzi kukakhala kwakukulu, zinthu zake za epoxy simenti zimakhala bwino kumbuyo kwa mbale, koma ngati kukhuthala kuli kwakukulu kwambiri, kudzavulaza simenti ya epoxy nthawi yomweyo kukhala yamadzimadzi komanso yogwira ntchito. Ponena za matope ena odziyimira pawokha okhala ndi madzimadzi ambiri, kukhuthala kwa ether ya cellulose kudzafotokozedwa kuti ndi kotsika.
Yankho la madzi la cellulose ether ndi thupi lopangidwa ndi pseudoplastic, pamene tizindikira kuti shear rate ndi yayikulu, ndipo ma viscosity ndi ochepa.
Choncho, mwachidule ndi izi: mgwirizano wa matope a simenti udzachepetsedwa ndi mphamvu yakunja, zomwe zimathandiza pa zomangamanga zomwe zili kumbuyo, koma yankho lamadzimadzi la cellulose ether ngati mtengo wotsika kwambiri wa ndende udzachitika, makhalidwe a madzi osakhala a Newtonian adzachitika, m'malo mwake, pamene mtengo wa ndende ukuwonjezeka, yankho la madzi lidzachitika makhalidwe amadzimadzi a pseudoplastic.
Kusunga madzi kuchokera ku hydroxypropyl methyl cellulose ndi chimodzi mwa zinthu zofunika kwambiri za hydroxypropyl methyl cellulose. Kuchuluka kwa madzi omwe amatuluka mu matope osakanikirana ndi zinthu zopangidwa ndi plaster kumakhudzidwa ndi kutentha kwa mpweya, kutentha ndi kuthamanga kwa mpweya. Chifukwa chake, m'nyengo zosiyanasiyana, kuphatikiza hydroxypropyl methyl cellulose, kuchuluka komweko kwa mphamvu ya madzi ya chinthucho kuli ndi kusiyana kwina.
Kawirikawiri, kukhuthala kwa hydroxypropyl methyl cellulose kukakhala kwakukulu, zotsatira zenizeni za kusunga madzi zimakhala bwino, koma kuwonongeka kwa kukhuthala kwa kusunga madzi kudzachepa pambuyo poti kukhuthala kwapitirira 100,000 Mpa. Pamene kukhuthala kwa HYDROXYpropyl methyl cellulose kupitirira 100,000, kuchuluka kwa kusunga madzi kumatha kuchepetsedwa kwambiri powonjezera kuchuluka kwa hydroxypropyl methyl cellulose.
Mu njira yomanga mwatsatanetsatane, mphamvu yosungira madzi ya slurry ingasinthidwe mwa kusintha kuchuluka kwa hydroxypropyl methyl cellulose. Zogulitsa za hydroxypropyl methyl cellulose zimatha kuthetsa vuto la kusunga madzi pansi pa kutentha kwakukulu kosalekeza. Mu nyengo yotentha yosalekeza, makamaka m'malo otentha komanso osasangalatsa komanso kupanga chromatography kumbali ya dzuwa, HYDROXYpropyl methyl cellulose yapamwamba imafunika kuti pakhale kusunga madzi kwa slurry.
Hydroxypropyl methyl cellulose ndi yabwino kwambiri, ndipo ili ndi mgwirizano wabwino, magulu ake ogwira ntchito a butyl ndi hydroxypropyl oxygen pamodzi ndi ulusi wa unyolo wa ulusi, imatha kupanga gulu la methyl aldehyde ndi mpweya, ndipo khalidwe la madzi a digito limatha kukhala logwirizana ndi madzi ndi madzi, kenako limalamulira bwino kutentha kwambiri komwe kumachitika chifukwa cha kusungunuka kwa madzi, kusunga madzi ambiri.
Ubwino wa hydroxypropyl methyl cellulose ukhoza kukwanira malo otayirira ndi amalonda mu matope osakanikirana ndi zinthu za pulasitala, ndipo tinthu tonse tolimba timapanga cyst, tonyowa, tozizira, ndikupanga wosanjikiza wa filimu, chinyezi pang'onopang'ono chimatulutsidwa pang'onopang'ono kuchokera pansi, ndikuyamba kwa organic compound admixture ya hydration reaction, kenako ndikutsimikizira mgwirizano wa zipangizo zopangira mphamvu yokakamiza ndi mphamvu yokoka. Chifukwa chake, munthawi yokhazikika yachilimwe yomanga, kuti ikwaniritse zotsatira za madzi, iyenera kukhala motsatira njira yopangira kuchuluka ndi mtundu wa zinthu za hydroxypropyl methyl cellulose, apo ayi, idzawonetsa kusasangalatsa mwachangu kwambiri ndikupangitsa kuti madzi asakwane, kuchepetsa mphamvu yokakamiza, kugawanika, kufalikira kwa makhalidwe monga metope empty drum ndi doubt, komanso kuphatikiza ndi coefficient ya ntchito yomanga. Pamene kutentha kukutsika, kuchuluka kwa hydroxypropyl methyl cellulose kumatha kuchepetsedwa pang'onopang'ono ndipo zotsatira zomwezo zosungira madzi zitha kupezeka.
Ngati cellulose ether siwonjezeredwa, chromatography ya matope atsopano a simenti idzauma mwachangu, zomwe zimapangitsa kuti konkriti isanyowe bwino, zomwe zimapangitsa kuti matope a simenti asamangidwe bwino komanso kuti azigwirana bwino. Nthawi yomweyo, kuwonjezera kwa cellulose ether kumapangitsa kuti matope a simenti akhale ndi mphamvu komanso kusinthasintha kwabwino, komanso kumawonjezera mphamvu yomangirira ya matope a simenti.
1, kukula kwa tinthu ta hydroxypropyl methyl cellulose
Kukula kwa tinthu ta cellulose ether kumawononga kusungunuka kwake. Kapangidwe ka cellulose ether kamakhala kofewa kwambiri, komwe kumawonongeka mwachangu m'madzi komanso komwe kumakulitsa mawonekedwe ake osungira madzi. Chifukwa chake, kukula kwa tinthu ta cellulose ether kuyenera kuphatikizidwa pakufufuza za chimodzi mwa makhalidwe ake. Kawirikawiri, kukula kwa tinthu ta cellulose ether ndi ma mesh 80 kutengera.
2, hydroxypropyl methyl cellulose youma popanda mphamvu yokoka
Manic youma yopanda mphamvu yokoka, imatanthauza kutentha kwina kwa manic cellulose ether youma, kutayika kwa khalidwe la mankhwala kunapangitsa kuti pakhale gawo loyambirira la khalidwe la chitsanzo. Kuti mtundu wina wa cellulose ether mu youma popanda mphamvu yokoka ndi wokwera kwambiri, kuchepetsa zigawo zofunika mu cellulose ether, kuvulaza zotsatira zenizeni za kugwiritsa ntchito makampani otsika, komanso kusintha mtengo wogulira. Kawirikawiri ether youma yopanda mphamvu yokoka siyenera kupitirira 5.0%.
3, hydroxypropyl methyl cellulose potaziyamu thiocyanate phulusa
Kuti mtundu winawake wa efa ya cellulose mu phulusa ukhale wokwera kwambiri, umachepetsa efa ya cellulose mu zigawo zoyenera, ndipo zotsatira zake zenizeni za kugwiritsa ntchito makampani otsika, kuchuluka kwa phulusa la cellulose etha potaziyamu thiocyanate ndiye chinthu chachikulu chomwe chimaganiziridwa kuti ndi chizindikiro cha makhalidwe ake.
4, kukhuthala kwa hydroxypropyl methyl cellulose
Kusunga madzi a hydroxypropyl methyl cellulose ndi kukhuthala kwake ndiye njira yofunika kwambiri yowonjezera simenti ya cellulose ether mu kukhuthala kwake ndi kuphatikiza kwake.
5, hydroxypropyl methyl cellulose PH value
Kukhuthala kwa zinthu za hydroxypropyl methyl cellulose kumachepa pang'onopang'ono kutentha kwambiri kapena kusungidwa kwa nthawi yayitali, makamaka pazinthu za kukhuthala kwakukulu, kotero pH iyenera kukhala yochepa. Kawirikawiri zimanenedwa kuti gulu la PH la ether ya cellulose liyenera kugwiritsidwa ntchito ngati 5-9.
6. Kutumiza kwa hydroxypropyl methyl cellulose
Ubwino ndi kuipa kwa kufalikira kwa hydroxypropyl methyl cellulose kungakhudze mwachindunji momwe imagwiritsidwira ntchito popanga zinthu zomangira. Zinthu zazikulu zomwe zimawononga kufalikira kwa ether ya cellulose ndi izi:
1) ubwino wa zipangizo zopangira; (2) zotsatira zenizeni za kuchotsa utsi; (3) Kukonzekera ukadaulo wokonza; (4) kukonzekera zosungunulira zachilengedwe; (5) Zotsatira zenizeni za zhonghe.
Malinga ndi momwe ntchitoyo imagwiritsidwira ntchito, mphamvu ya cellulose ether siyenera kukhala yochepera 80%.
7, kutentha kwa hydroxypropyl methyl cellulose komwe kumaganiziridwa kuti ndi koyenera
Hydroxypropyl methyl celluloseMu simenti, zinthu monga chinsinsi chowonjezera zomatira, kukhuthala ndi chosungira madzi, kotero kukhuthala ndi kutentha kwa gel ndiye chizindikiro chachikulu cha hydroxypropyl methyl cellulose. Kutentha kumagwiritsidwa ntchito kuweruza mtundu ndi mawonekedwe a ether ya cellulose, ndipo kuchuluka kwa kusintha kwa ether ya cellulose kumakhudzana.
8. Kuphatikiza apo, mchere ndi zotsalira zimawononganso kutentha kwa guluu. Kutentha kwa madzi akakwera, ulusi wa polima umasowa madzi pang'onopang'ono, ndipo kukhuthala kwa madzi akamachepa. Pamene mfundo yomatira yafika, polima imauma kwathunthu ndipo guluu imapangidwa. Chifukwa chake, kutentha kwa simenti nthawi zambiri kumakhala kotsika kuposa kutentha koyambirira kwa guluu. Pansi pa muyezo uwu, kutentha kukakhala kotsika, kukhuthala kumakwera, ndipo zotsatira zenizeni za kukhuthala ndi kusunga madzi zimakhala zofunika kwambiri.
Nthawi yotumizira: Epulo-25-2024