1, kodi ntchito yaikulu ya hydroxypropyl methyl cellulose (HPMC) ndi yotani?
HPMC imagwiritsidwa ntchito kwambiri pa zipangizo zomangira, zokutira, utomoni wopangidwa, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC ikhoza kugawidwa m'magulu awa: kalasi yomanga, kalasi ya chakudya ndi kalasi ya zamankhwala pogwiritsira ntchito. Pakadali pano, kalasi yambiri yomanga m'nyumba, mu kalasi yomanga, mlingo wa ufa wa putty ndi waukulu, pafupifupi 90% imagwiritsidwa ntchito popanga ufa wa putty, yotsalayo imagwiritsidwa ntchito popanga matope a simenti ndi guluu.
2, hydroxypropyl methyl cellulose (HPMC) yagawidwa m'magulu angapo, kodi kusiyana kwake ndi kotani?
HPMC ingagawidwe m'magulu awiri: mankhwala ofulumira ndi otentha, mankhwala ofulumira, m'madzi ozizira amafalikira mofulumira, amasowa m'madzi, panthawiyi madziwo alibe kukhuthala, chifukwa HPMC imangofalikira m'madzi, palibe kusungunuka kwenikweni. Pafupifupi mphindi ziwiri, kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono, ndikupanga colloid yowonekera bwino. Zinthu zosungunuka zotentha, m'madzi ozizira, zimatha kufalikira mwachangu m'madzi otentha, zimasowa m'madzi otentha, kutentha kukatsika kufika kutentha kwina, kukhuthala kumawonekera pang'onopang'ono, mpaka kupanga colloid yowonekera bwino. Mankhwala otentha angagwiritsidwe ntchito mu ufa wa putty ndi matope, mu guluu wamadzimadzi ndi utoto, padzakhala chochitika chamagulu, sichingagwiritsidwe ntchito. CHITSANZO CHA Instant SOLUTION, KUGWIRITSA NTCHITO NDI KOCHEPA KWAMBIRI, KUTOPA NDI UFA WA ANA NDI MTOTO, NDIPONSO MU GULU NDI CHIKUTO CHA MADZI, ONSE ATHA KUGWIRITSA NTCHITO, POPANDA KULETSA.
3, njira zosungunula za hydroxypropyl methyl cellulose (HPMC) zili ndi zimenezo?
– A: Njira yosungunula madzi otentha: chifukwa HPMC siisungunuka m'madzi otentha, kotero HPMC yoyambirira imatha kufalikira mofanana m'madzi otentha, kenako n’kusungunuka mofulumira ikazizira, njira ziwiri zodziwika bwino zafotokozedwa motere: 1), m’chidebecho mu kuchuluka kwa madzi otentha ofunikira, ndikutenthedwa kufika pa 70℃. Pang’onopang’ono onjezerani hydroxypropyl methylcellulose mukasakaniza pang’onopang’ono, HPMC inayamba kuyandama pamwamba pa madzi, kenako pang’onopang’ono imapanga slurry, pansi pa kusakaniza kuziziritsa slurry. 2), onjezerani kuchuluka kofunikira kwa 1/3 kapena 2/3 madzi m’chidebecho, ndikutenthetsa kufika pa 70℃, malinga ndi njira ya 1), kufalikira kwa HPMC, kukonzekera slurry ya madzi otentha; Kenako onjezerani madzi ozizira otsala ku slurry yotentha, sakanizani ndikuziziritsa chisakanizocho. Njira yosakanizira ufa: Ufa wa HPMC ndi zosakaniza zina zambiri za ufa, zosakaniza bwino ndi blender, mutawonjezera madzi kuti asungunuke, ndiye HPMC ikhoza kusungunuka panthawiyi, koma osati kugwirizana, chifukwa ngodya iliyonse yaying'ono, ufa wochepa wa HPMC, madzi adzasungunuka nthawi yomweyo. – Makampani opanga ufa wa putty ndi matope akugwiritsa ntchito njira iyi. Hydroxypropyl METHYL cellulose (HPMC) IMAGWIRITSIDWA NTCHITO NJINGA YOTHIRA NDI YOGWIRITSA NTCHITO MMENE IMATHIRA NDIPONSO YOGWIRITSA NTCHITO MMENE IMATHIRA ...
4, kodi ndi kosavuta komanso kodabwitsa bwanji kudziwa mtundu wa hydroxypropyl methyl cellulose (HPMC)?
– Yankho: (1) kuyera: ngakhale kuyera sikungathe kudziwa ngati HPMC ndi yabwino kugwiritsa ntchito, ndipo ngati iwonjezeredwa mu njira yopangira choyeretsera, idzakhudza ubwino wake. Komabe, zinthu zabwino nthawi zambiri zimakhala zoyera. (2) kuyera: Kuyera kwa HPMC nthawi zambiri kumakhala ndi ma mesh 80 ndi ma mesh 100, cholinga chochepera 120, Hebei HPMC nthawi zambiri kumakhala ndi ma mesh 80, kuyera kocheperako kumakhala kocheperako, nthawi zambiri kumakhala bwino. (3) kutumiza: hydroxypropyl methyl cellulose (HPMC) m'madzi, kupangika kwa colloid yowonekera, kuwona kutumiza kwake, kufalikira kwake kumakhala kwakukulu, kumakhala bwino, zinthu zosasungunuka mkati mwake zimakhala zochepa. Kulowa kwa choyeretsera choyima nthawi zambiri kumakhala bwino, choyeretsera choyima chimakhala choipa, koma sichingawonetse kuti mtundu wa kupanga choyeretsera choyima ndi wabwino kuposa kupanga choyeretsera choyima, khalidwe la chinthu limatsimikiziridwa ndi zinthu zambiri. (4) mphamvu yeniyeni: mphamvu yeniyeni ikakula, kulemera kwake kumakhala bwino. Kuposa kofunikira, nthawi zambiri chifukwa chakuti hydroxypropyl ili ndi kuchuluka, hydroxypropyl ili ndi kuchuluka, ndiye kuti kusunga madzi kumakhala bwino.
5, hydroxypropyl methyl cellulose (HPMC) mu kuchuluka kwa ufa wa putty?
– Yankho: HPMC pogwiritsira ntchito mlingo weniweni, malinga ndi nyengo, kutentha, mtundu wa phulusa la calcium m'deralo, fomula ya ufa wa putty ndi “zofunikira za makasitomala za khalidwe”, ndipo pali zosiyana. Kawirikawiri, mlingo wa putty wosagwira madzi mu 4 kg – 5 kg pakati. Mwachitsanzo: ufa wa putty wa Beijing, makamaka umayikidwa 5 kg; Ku Guizhou, ambiri mwa iwo ndi 5 kg m'chilimwe ndi 4.5 kg m'nyengo yozizira. Kuchuluka kwa Yunnan ndi kochepa, nthawi zambiri 3 kg -4 kg ndi zina zotero. Ndipo mlingo wa HPMC mu putty wa 821 nthawi zambiri umakhala 2 ~ 3 kg.
6, hydroxypropyl methyl cellulose (HPMC) kodi kukhuthala koyenera ndi kotani?
– Yankho: TOTOLENI NDI UFU WA ANA ANTHU ONSE 100,000 CHABWINO, CHOFUNIKA MU MTOTO NDI CHAMBIRI, MUKUFUNA KUGWIRITSA NTCHITO 150,000. Komanso, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati kusunga madzi kuli bwino, kukhuthala kuli kochepa (7-80,000), n'zothekanso, ndithudi, kukhuthala kumakhala kwakukulu, kusunga madzi kumakhala bwino, pamene kukhuthala kuli koposa 100,000, kukhuthala sikukhudza kwambiri kusunga madzi.
7, hydroxypropyl methyl cellulose (HPMC) zizindikiro zazikulu zaukadaulo ndi ziti?
A: Kuchuluka kwa hydroxypropyl ndi kukhuthala, zomwe anthu ambiri amada nkhawa nazo. Kuchuluka kwa hydroxypropyl ndi kwakukulu, kusunga madzi nthawi zambiri kumakhala bwino. Kukhuthala, kusunga madzi, wachibale (koma osati kwathunthu) ndikonso kuli bwino, ndipo kukhuthala, mu simenti matope ndi bwino kugwiritsa ntchito zina.
8, hydroxypropyl methyl cellulose (HPMC) zinthu zazikulu zopangira ndi chiyani?
– Yankho: hydroxypropyl methyl cellulose (HPMC) ya zipangizo zazikulu zopangira: thonje loyengedwa, chloromethane, propylene oxide, zipangizo zina zopangira zili ndi, mapiritsi a alkali, asidi, toluene, isopropyl alcohol, ndi zina zotero.
9, HPMC pogwiritsira ntchito ufa wa putty, ntchito yaikulu ndi iti, kaya ndi chemistry?
HPMC mu ufa wa putty, kukhuthala, kusunga madzi ndi kumanga ntchito zitatu. Kukhuthala: Cellulose ikhoza kukhuthala kuti ikhale ndi kuyimitsidwa, kotero kuti yankho likhale lofanana mmwamba ndi pansi, loletsa kuyenda kwa madzi. Kusunga madzi: kumapangitsa ufa wa putty kuumitsa pang'onopang'ono, phulusa lothandizira calcium reaction pansi pa mphamvu ya madzi. Kapangidwe: Cellulose imakhala ndi mphamvu yopaka mafuta, ingapangitse ufa wa putty kukhala ndi kapangidwe kabwino. HPMC sichita nawo machitidwe aliwonse a mankhwala, imangokhala ndi gawo lothandizira. Madzi owonjezera a putty powder, pakhoma, ndi mankhwala, chifukwa pamakhala kupanga zinthu zatsopano, ufa wa putty pakhoma kuchokera pakhoma, kuphwanyidwa kukhala ufa, kenako nkugwiritsidwa ntchito, sipadzakhalanso, chifukwa chapanga chinthu chatsopano (calcium carbonate). Zigawo zazikulu za ufa wa imvi wa calcium ndi izi: Ca(OH)2, CaO ndi kuchuluka kochepa kwa CaCO3 osakaniza, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O calcium phulusa m'madzi ndi mpweya pansi pa zochita za CO2, mapangidwe a calcium carbonate, ndi HPMC yokha kusunga madzi, wothandiza calcium phulusa bwino kuchitapo kanthu, yake sinachite nawo chilichonse.
10, HPMC si ionic cellulose ether, ndiye kodi si ionic ndi chiyani?
A: Kawirikawiri, nonionic ndi chinthu chomwe chili m'madzi chomwe sichipanga ioni. Ionization ndi njira yomwe electrolyte imagawikana kukhala ma ayoni oyendetsedwa momasuka mu chosungunulira china chake, monga madzi kapena mowa. Mwachitsanzo, sodium chloride (NaCl), mchere womwe timadya tsiku lililonse, umasungunuka m'madzi ndikupanga ma ayoni kuti apange ma ayoni a sodium oyenda momasuka (Na+) omwe ali ndi mphamvu zabwino komanso ma ayoni a chloride (Cl) omwe ali ndi mphamvu zoyipa. Mwanjira ina, HPMC m'madzi simagawikana kukhala ma ayoni oyendetsedwa, koma imapezeka ngati mamolekyu.
11, kutentha kwa gel ya hydroxypropyl methylcellulose ndi chiyani chomwe chikugwirizana nacho?
– Yankho: Kutentha kwa gel ya HPMC kumagwirizana ndi kuchuluka kwa methoxy komwe ili nako. Kuchuluka kwa methoxy komwe kuli kotsika, kutentha kwa gel kumakhala kwakukulu.
12. Kodi pali ubale uliwonse pakati pa ufa wa putty ndi HPMC?
– Yankho: ufa wa putty ndi ubwino wa calcium zili ndi ubale wabwino kwambiri, ndipo HPMC ilibe ubale wochuluka. Kuchepa kwa calcium mu calcium ndi kuchuluka kwa CaO, Ca(OH)2 mu calcium ash sikoyenera, kungayambitse kugwa kwa ufa. Ngati zikugwirizana ndi HPMC, ndiye kuti kusunga madzi kwa HPMC ndi kochepa, kungayambitsenso kugwa kwa ufa. Pazifukwa zinazake, chonde onani funso 9.
13, hydroxypropyl methylcellulose yosungunuka m'madzi ozizira ndi yosungunuka yotentha popanga, kodi kusiyana kwake ndi kotani?
– Mtundu wa :HPMC wosungunuka m'madzi ozizira umayikidwa m'madzi ozizira omwe amafalikira mwachangu, koma osasungunuka kwenikweni, kukhuthala kumakwera, ndipo umasungunuka. Mtundu wosungunuka m'madzi ozizira sunakonzedwe pamwamba ndi glyoxal. Kuchuluka kwa glyoxal ndi kwakukulu, kufalikira kwake kumathamanga, koma kukhuthala kwake kumachepa, kukhuthala kwake ndi kochepa, m'malo mwake.
14, hydroxypropyl methyl cellulose (HPMC) ili ndi fungo la zomwe zikuchitika?
– Yankho: HPMC yopangidwa ndi njira yosungunulira imapangidwa ndi toluene ndi isopropyl alcohol ngati chosungunulira. Ngati kutsuka sikuli bwino, padzakhala kukoma kotsalira.
15, ntchito zosiyanasiyana, momwe mungasankhire hydroxypropyl methyl cellulose (HPMC) yoyenera?
– Yankho: Kupaka ufa wa putty: chofunikira ndi chotsika, kukhuthala ndi 100,000, palibe vuto, chinthu chofunikira ndikusunga madzi bwino. Kugwiritsa ntchito matope: chofunika ndi chokwera, chofunikira ndi kukhuthala kwakukulu, 150,000 kuyenera kukhala bwino. Kugwiritsa ntchito guluu: kumafuna zinthu zomwe zimagwira ntchito mwachangu, kukhuthala kwakukulu.
16, hydroxypropyl methylcellulose ndi chiyani dzina lodziwika bwino?
A: Hydroxypropyl Methyl Cellulose, Chingerezi: Hydroxypropyl Methyl Cellulose chidule: HPMC kapena dzina lina la MHPC: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC pogwiritsira ntchito ufa wa putty, ufa wa putty chifukwa chiyani?
HPMC mu ufa wa putty, kukhuthala, kusunga madzi ndi kapangidwe kake ndi ntchito zitatu. Sizitenga nawo mbali pa chilichonse. Chifukwa cha thovu: 1, madzi amathiridwa kwambiri. 2, pansi sipauma, pamwamba pake pali wosanjikiza, komanso n'zosavuta kuphukira.
18. Fomula ya ufa wa putty wa makoma amkati ndi akunja?
– Yankho: ufa wa putty wosalowa madzi wa khoma lamkati: 750~ 850KG ya calcium yolemera, 150~250KG ya calcium imvi, 4~5KG ya ether ya cellulose, ndi 1~2KG ya ufa wa polyvinyl alcohol ukhoza kuwonjezeredwa moyenera; Ufa wa putty wakunja wa khoma: simenti yoyera 350KG, calcium yolemera 500-550kg, calcium imvi 100-150kg, ufa wa latex 8-12kg, ether ya cellulose 5KG, ulusi wamatabwa 3KG.
19. Kodi kusiyana pakati pa HPMC ndi MC ndi kotani?
– MC ya methyl cellulose, ndi thonje loyengedwa bwino pambuyo pochiza alkali, ndi methane chloride ngati etherification, kudzera muzochita zingapo ndi cellulose ether. Kawirikawiri, mlingo wa kusintha ndi 1.6 ~ 2.0, ndipo kusungunuka kumasiyana malinga ndi mlingo wa kusintha. Ndi non-ionic cellulose ether.
(1) Kusunga madzi kwa methyl cellulose kumadalira kuchuluka kwa kuwonjezera kwake, kukhuthala, kusalala kwa tinthu tating'onoting'ono ndi liwiro la kusungunuka. Kawirikawiri kuwonjezera kuchuluka kwake, kusalala pang'ono, kukhuthala, kuchuluka kwa madzi osungira. Pakati pawo, kuchuluka kwa madzi owonjezeredwa ku kuchuluka kwa madzi osungira kumakhudza kwambiri, kukhuthala ndi kuchuluka kwa madzi osungira sikufanana ndi ubale. Kusungunuka kwa madzi kumadalira makamaka pa mlingo wa kusintha kwa pamwamba ndi kusalala kwa tinthu tating'onoting'ono ta tinthu ta cellulose. Mu cellulose ether yomwe ili pamwambapa, kuchuluka kwa madzi osungira methyl cellulose ndi hydroxypropyl methyl cellulose kumakhala kwakukulu.
(2) Methyl cellulose imatha kusungunuka m'madzi ozizira, madzi otentha osungunuka amakumana ndi zovuta, yankho lake lamadzi lomwe lili mu pH=3~12 ndi lokhazikika kwambiri. Limagwirizana bwino ndi starch, guanidine gum ndi ma surfactants ambiri. Gelation imachitika kutentha kukafika pa gelation temperature.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa madzi omwe amasungidwa mu methyl cellulose. Nthawi zambiri, kutentha kukakhala kwakukulu, madzi omwe amasungidwa amakhala oipa kwambiri. Ngati kutentha kwa matope kupitirira 40℃, madzi omwe amasungidwa mu methyl cellulose adzakhala oipa kwambiri, zomwe zidzakhudza kwambiri kapangidwe ka matope.
(4) Methyl cellulose imakhudza kwambiri kapangidwe ndi kumatirira kwa matope. Pano, "kumatirira" kumatanthauza mphamvu yomatirira yomwe imamveka pakati pa chida chogwiritsira ntchito cha wantchito ndi khoma, ndiko kuti, kukana kukakamira kwa matope. Mphamvu yomatira ndi yayikulu, kukana kukakamira kwa matope ndi yayikulu, ndipo mphamvu yomwe ogwira ntchito amafunikira pakugwiritsa ntchito matope ndi yayikulu, kotero mphamvu yomangira matope ndi yotsika.
Mu zinthu zopangidwa ndi cellulose ether, methyl cellulose adhesion imakhala pamlingo wapakati. HPMC ya hydroxypropyl methyl cellulose, imapangidwa ndi thonje loyengedwa bwino pambuyo pochiza alkalizing, ndi propylene oxide ndi chloromethane ngati etherifying agent, kudzera muzochita zingapo ndipo imapangidwa ndi non-ionic cellulose mixed ether. Mlingo wosinthira nthawi zambiri umakhala 1.2 ~ 2.0. Katundu wake amakhudzidwa ndi kuchuluka kwa methoxy ndi hydroxypropyl.
(1) hydroxypropyl methyl cellulose ikasungunuka m'madzi ozizira, madzi otentha akasungunuka amakumana ndi zovuta. Koma kutentha kwake kwa gelation m'madzi otentha kumakhala kwakukulu kwambiri kuposa kwa methyl cellulose. Kusungunuka kwa methyl cellulose m'madzi ozizira nakonso kwawonjezeka kwambiri.
(2) kukhuthala kwa hydroxypropyl methyl cellulose kumakhudzana ndi kulemera kwake kwa mamolekyulu, ndipo kulemera kwakukulu kwa mamolekyulu ndi kukhuthala kwakukulu. Kutentha kudzakhudzanso kukhuthala kwake, kutentha kumawonjezeka, kukhuthala kumachepa. Komabe, kukhuthala kwa kutentha kwakukulu kumakhala kotsika kuposa kwa methyl cellulose. Yankho limakhala lokhazikika likasungidwa kutentha kwa chipinda.
(3) hydroxypropyl methyl cellulose ndi yokhazikika ku asidi ndi alkali, ndipo yankho lake lamadzi ndi lokhazikika kwambiri pa pH = 2 ~ 12. Caustic soda ndi madzi a laimu sizikhudza kwambiri mawonekedwe ake, koma alkali imatha kufulumizitsa kusungunuka kwake ndikuwonjezera kukhuthala kwa pini. Hydroxypropyl methyl cellulose imakhala yokhazikika ku mchere wamba, koma pamene mchere uli wambiri, kukhuthala kwa yankho la hydroxypropyl methyl cellulose kumawonjezeka.
(4) Kusunga madzi kwa hydroxypropyl methyl cellulose kumadalira kuchuluka kwa kuwonjezeredwa kwake, kukhuthala kwake, ndi zina zotero, kuchuluka komweko kwa kusunga madzi ndi kwakukulu kuposa methyl cellulose.
(5) hydroxypropyl methyl cellulose ikhoza kusakanikirana ndi mankhwala a polymer osungunuka m'madzi kuti ikhale yankho lofanana komanso lolimba kwambiri. Monga polyvinyl alcohol, starch ether, plant gum ndi zina zotero.
(6) Kugwirizana kwa hydroxypropyl methyl cellulose ku matope opangidwa ndi matope n'kokwera kuposa kwa methyl cellulose.
(7) hydroxypropyl methyl cellulose ili ndi kukana kwa enzymatic bwino kuposa methyl cellulose, ndipo kuthekera kwa enzymatic kuwonongeka kwa yankho lake ndi kochepa kuposa kwa methyl cellulose.
20, ubale pakati pa kukhuthala ndi kutentha kwa HPMC, womwe uyenera kuganiziridwa pogwiritsira ntchito?
– Yankho: Kukhuthala kwa HPMC kumasiyana malinga ndi kutentha, kutanthauza kuti kukhuthala kumawonjezeka ndi kuchepa kwa kutentha. Tikamalankhula za kukhuthala kwa chinthu, tikutanthauza zotsatira za kuyeza yankho lake lamadzi la 2% pa kutentha kwa madigiri 20 Celsius. Pogwira ntchito, m'malo omwe kutentha kwake kuli kosiyana kwambiri pakati pa chilimwe ndi nyengo yozizira, chisamaliro chiyenera kuperekedwa ku malangizo oti mugwiritse ntchito kukhuthala kochepa m'nyengo yozizira, komwe kumakhala kothandiza kwambiri pakupanga. Kupanda kutero, kutentha kukakhala kochepa, kukhuthala kwa cellulose kudzawonjezeka, pamene mukukanda, kumva kudzakhala kolemera. Kukhuthala kwapakati :75000-100000 kumagwiritsidwa ntchito makamaka pa chifukwa cha putty: kusunga bwino madzi, kukhuthala kwakukulu :150000-200000 kumagwiritsidwa ntchito makamaka pa tinthu ta polystyrene, kutenthetsa, kuphimba, ndi mikanda yagalasi, kutenthetsa, ndi kutenthetsa. Chifukwa: kukhuthala kwakukulu, kukhuthala sikuli kosavuta kugwetsa phulusa ndi madzi, kukonza kapangidwe kake. Koma nthawi zambiri, kukhuthala kwakukulu, kusunga madzi kumakhala bwino, kotero mafakitale ambiri ouma amaganizira mtengo wake, ndi cellulose yapakatikati (75,000-100000) kuti ilowe m'malo mwa cellulose yotsika (20,000-40000) kuti achepetse kuchuluka kwa kuwonjezera.
Nthawi yotumizira: Feb-05-2024