Kodi Hydroxypropyl Methylcellulose HPMC ndi chiyani?

Hydroxypropyl Methylcellulose HPMC, yomwe imadziwikanso kuti Cellulose ether, ndi polima yopangira, yosungunuka m'madzi yomwe imachokera ku cellulose. Amapangidwa ndikusintha ma cellulose achilengedwe, omwe ndi gawo loyambirira lazomera, kudzera munjira zingapo zamankhwala.

Industrial grade hydroxypropyl methylcellulose amasiyanitsidwa ndi mamasukidwe akayendedwe. Nthawi zambiri amagwiritsidwa ntchito ndi magiredi otsatirawa (malinga ndi mamasukidwe akayendedwe).

Low mamachulukidwe akayendedwe: 400 makamaka ntchito matope okha-leveling, koma nthawi zambiri kunja. Chifukwa: otsika mamasukidwe akayendedwe, ngakhale kusungirako madzi ndi osauka, koma kusanja bwino, kachulukidwe matope ndi mkulu.

Wapakatikati ndi mkulu mamasukidwe akayendedwe: 20000-70000 makamaka ntchito matailosi zomatira, wothandizila caulking, matope zosagwira matope, matenthedwe kutchinjiriza chomangira matope, etc. Zifukwa: workability wabwino, madzi ochepa, ndi mkulu matope kachulukidwe.

Kodi hydroxypropyl methylcellulose (HPMC) amagwiritsidwa ntchito bwanji?

Mtengo wa HPMCamagwiritsidwa ntchito kwambiri mu zomangamanga, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola, fodya ndi mafakitale ena. HPMC akhoza kugawidwa mu: nyumba, chakudya ndi mankhwala. Pakalipano, nyumba zambiri zomwe zimapangidwa m'nyumba zimakhala zamtundu wa zomangamanga. Pomanga kalasi, kuchuluka kwa ufa wa putty ndi waukulu kwambiri, pafupifupi 90% amagwiritsidwa ntchito popanga ufa wa putty, ndipo enawo amagwiritsidwa ntchito ngati matope a simenti ndi guluu.

Pali mitundu ingapo ya hydroxypropyl methylcellulose (HPMC). Kodi pali kusiyana kotani pakugwiritsa ntchito kwawo?

Mtengo wa HPMCakhoza kugawidwa m'magulu osungunuka nthawi yomweyo ndi otentha-osungunuka, osungunuka mofulumira. Ikamwazikana mofulumira m’madzi ozizira, imathera m’madzi. Panthawi imeneyi, madzi alibe mamasukidwe akayendedwe chifukwa HPMC kokha omwazika m'madzi ndipo palibe kuvunda kwenikweni. Pafupifupi 2 mphindi, mamasukidwe akayendedwe a madzi pang'onopang'ono anakula, kupanga mandala viscous colloid. Mankhwala amtundu wotentha, pamadzi ozizira, amatha kumwazikana m'madzi otentha ndikutha m'madzi otentha. Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka mawonekedwe a viscous colloid apangidwa. Mtundu wosungunuka wotentha ukhoza kugwiritsidwa ntchito mu putty ufa ndi matope. Mu guluu wamadzimadzi ndi utoto, padzakhala chodabwitsa cha clumping, chomwe sichingagwiritsidwe ntchito. Amapezeka m'mitundu yambiri yogwiritsira ntchito, mu putty powder ndi matope, komanso mu zomatira zamadzimadzi ndi zokutira. Palibe contraindications.

Kodi njira zosungunulira za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Njira yosungunula madzi otentha: Popeza HPMC sisungunuka m'madzi otentha, HPMC yoyambirira imatha kumwazikana m'madzi otentha kenako ndikusungunuka mwachangu pakuzizira. Njira ziwiri zodziwika bwino zikufotokozedwa motere: 1), kuyikidwa mchidebe Lowetsani kuchuluka kwamadzi otentha ndi kutentha pafupifupi 70 ° C. Hydroxypropyl methylcellulose inawonjezeredwa pang'onopang'ono ndikugwedeza pang'onopang'ono, ndipo HPMC inayandama pamwamba pa madzi, ndiyeno slurry inapangidwa pang'onopang'ono, ndipo slurry inakhazikika ndi kusonkhezera. 2) Kuonjezera 1/3 kapena 2/3 ya madzi ofunikira m'chombo ndi kutentha kwa 70 ° C, kufalitsa HPMC molingana ndi 1) kukonzekera slurry madzi otentha; kenaka kuwonjezera madzi otsala otsala kumadzi otentha Mu slurry, kusakaniza kunakhazikika pambuyo poyambitsa. Njira yosakaniza ufa: ufa wa HPMC umasakanizidwa ndi zinthu zambiri za ufa, zosakaniza bwino ndi blender, kenako zimasungunuka ndi madzi. Panthawi imeneyi, HPMC akhoza kusungunuka popanda agglomeration, chifukwa ngodya yaing'ono iliyonse ili ndi HPMC yochepa chabe. Ufa udzasungunuka nthawi yomweyo ukakumana ndi madzi. - Njirayi imagwiritsidwa ntchito ndi putty powder ndi opanga matope. Hydroxypropyl methylcellulose (HPMC) amagwiritsidwa ntchito ngati thickener ndi kusunga madzi mu putty mortar.

Momwe mungaweruzire mtundu wa hydroxypropyl methylcellulose (HPMC) mophweka komanso mwachilengedwe?

(1) Kuyera: Ngakhale kuyera sikungadziwe ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati iwonjezeredwa ku chowunikira panthawi yopanga, idzakhudza ubwino wake. Komabe, zinthu zabwino zambiri zimakhala zoyera. (2) Fineness: Ubwino wa HPMC nthawi zambiri umakhala ndi mauna 80 ndi mauna 100, ndipo mauna 120 ndiwocheperako. Kukongoletsedwa bwino, kumakhala bwinokonso. (3) Transmittance: Ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti mupange colloid yowonekera, ndikuwona kuwonekera kwake. Kutumiza kwabwinoko, kumachepetsanso zinthu zosasungunuka. . The ofukula riyakitala ali wabwino permeability, ndi yopingasa riyakitala ndi zoipa, koma sizikutanthauza kuti khalidwe ofukula riyakitala ndi bwino kuposa ketulo. Ubwino wa mankhwalawa umatsimikiziridwa ndi zinthu zambiri. (4) Mphamvu yokoka yeniyeni: Pamene mphamvu yokoka ikukulirakulira, m’pamenenso kulemera kwake kumakulirakulira. The chiŵerengero chachikulu, zambiri chifukwa zili hydroxypropyl gulu ndi mkulu, ndipo zili hydroxypropyl gulu ndi mkulu, madzi posungira bwino.

Kodi hydroxypropyl methylcellulose (HPMC) mu putty powder ndi chiyani?

Mtengo wapatali wa magawo HPMCzomwe zimagwiritsidwa ntchito pazochitika zenizeni zimasiyanasiyana ndi nyengo, kutentha, khalidwe la calcium la phulusa la m'deralo, ufa wa putty powder ndi "khalidwe lofunidwa ndi makasitomala". Nthawi zambiri, pakati pa 4 kg ndi 5 kg. Mwachitsanzo: ozizira m'dera putty ufa, ambiri kuika 5 makilogalamu; Malo otentha nthawi zambiri amakhala 5 kg m'chilimwe ndi 4.5 kg m'nyengo yozizira.

Kodi kukhuthala kwa hydroxypropyl methylcellulose (HPMC) ndi chiyani?

Pakhoma putty ufa nthawi zambiri amakhala 100,000, ndipo matope owuma amafunika kukhala apamwamba. Ndikofunikira kugwiritsa ntchito 150,000. Komanso, ntchito yofunika kwambiri ya HPMC ndi kusunga madzi, kenako thickening. Mu ufa wa putty, bola ngati kusungirako madzi kuli bwino, kukhuthala kumakhala kotsika (70,000-80,000), ndikothekanso. Kumene, mamasukidwe akayendedwe ndi zazikulu, wachibale madzi posungira ndi bwino. Pamene mamasukidwe akayendedwe amaposa 100,000, zotsatira za mamasukidwe akayendedwe pa kusunga madzi si lalikulu kwambiri.

Kodi zizindikiro zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Zomwe zili ndi Hydroxypropyl ndi viscosity, ogwiritsa ntchito ambiri amakhudzidwa ndi zizindikiro ziwirizi. Ngati hydroxypropyl ili pamwamba, kusungirako madzi kumakhala bwinoko. Viscosity, kusunga madzi, wachibale (osati mtheradi), ndi kukhuthala kwakukulu, bwino mumatope a simenti.

Kodi zida zazikulu za hydroxypropyl methylcellulose (HPMC) ndi ziti?

Zopangira zazikulu za hydroxypropyl methylcellulose (HPMC): thonje woyengedwa, methyl chloride, propylene oxide, zopangira zina, monga caustic soda, asidi, toluene, isopropanol.

Kodi ntchito yayikulu ya HPMC pakugwiritsa ntchito ufa wa putty ndi iti?

HPMC imagwira ntchito yokulitsa, kusunga madzi ndikumanga mu putty powder. Kunenepa: Ma cellulose amatha kukulitsidwa kuti ayimitse, sungani yankholo mofanana, ndikukana kugwa. Kusunga madzi: Ufa wa putty umawuma pang'onopang'ono, ndipo phulusa la calcium lothandizira limagwira pansi pamadzi. Zomangamanga: Ma cellulose amakhala ndi mafuta, omwe angapangitse ufa wa putty kukhala ndi ntchito yabwino. HPMC sitenga nawo gawo pazosintha zilizonse zamakina ndipo imangothandiza. Putty ufa ndi madzi, pakhoma, ndi mankhwala anachita. Chifukwa cha kupangidwa kwa zinthu zatsopano, ufa wa putty pakhoma umachotsedwa pakhoma, pansi kukhala ufa, ndikugwiritsidwanso ntchito, sudzagwira ntchito, chifukwa chinthu chatsopano chapangidwa (calcium carbonate). ). Zigawo zazikulu za ufa wa phulusa la calcium ndi: Ca(OH)2, osakaniza CaO ndi CaCO3 pang'ono, CaO+H2O=Ca(OH)2-Ca(OH)2+CO2=CaCO3+H2O phulusa calcium mu madzi ndi mpweya Pansi pa zochita za CO2, calcium carbonate imapangidwa, ndipo HPMC imangokhala ndi madzi, imathandizira kuti phulusa la calcium liziyenda bwino, ndipo silitenga nawo mbali pazochita zilizonse zokha. 

HPMC ndi non-ionic cellulose ether, ndiye non-ion ndi chiyani?

Nthawi zambiri, si-ion ndi chinthu chomwe sichikhala m'madzi ndipo sichimayinidwa. Ionization imatanthawuza njira yomwe electrolyte imasiyanitsidwa kukhala ion yoyendetsedwa momasuka muzosungunulira zina monga madzi kapena mowa. Mwachitsanzo, mchere womwe umadyedwa tsiku lililonse, sodium chloride (NaCl), umapangidwa ndi ionized kuti apange ma ion a sodium (Na +) okhala ndi mpweya wabwino komanso chloride (Cl) yoyipa. Ndiko kunena kuti, HPMC imayikidwa m'madzi ndipo sichimalekanitsa mu ma ion opangidwa, koma imakhala ngati mamolekyu.

Kodi kutentha kwa gel wa hydroxypropyl methylcellulose ndi chiyani?

Kutentha kwa gel osakaniza a HPMC kumagwirizana ndi zomwe zili mu methoxy. Kutsika kwa methoxy, kumapangitsa kutentha kwa gel.

Kodi ufa wa putty ufa uli ndi ubale uliwonse ndi HPMC?

Ufa wa ufa wa putty umagwirizana makamaka ndi khalidwe la imvi calcium, ndipo alibe chochita ndi HPMC. Kashiamu yochepa ya phulusa la calcium ndi chiŵerengero chosayenera cha CaO ndi Ca(OH)2 mu phulusa la calcium zidzachititsa kuti ufa uwonongeke. Ngati zikugwirizana ndi HPMC, ndiye ngati kusungidwa kwa madzi kwa HPMC kuli koipa, kungayambitsenso kutaya ufa.

Kodi pali kusiyana kotani pakati pa madzi ozizira nthawi yomweyo ndi mtundu wosungunuka wa hydroxypropyl methylcellulose popanga? HPMC madzi ozizira nthawi yomweyo mtundu pamwamba mankhwala ndi glyoxal , ndipo mwamsanga omwazikana m'madzi ozizira, koma kwenikweni kusungunuka. Pamene mamasukidwe akayendedwe akukwera, amasungunuka. Mawonekedwe osungunuka otentha samathandizidwa ndi glyoxal. Pamene kuchuluka kwa glyoxal kuli kwakukulu, kubalalitsidwa kumathamanga, koma kukhuthala kumachedwa. 

Kodi fungo la hydroxypropyl methylcellulose (HPMC) ndi chiyani?

HPMC yopangidwa ndi njira yosungunulira imagwiritsa ntchito toluene ndi mowa wa isopropyl ngati zosungunulira. Ngati kutsuka sikuli bwino, padzakhala kukoma kotsalira.

Kodi mungasankhire bwanji hydroxypropyl methylcellulose (HPMC) pazolinga zosiyanasiyana?

Kugwiritsa ntchito ufa wa putty: chofunikira ndichotsika, kukhuthala ndi 100,000, zili bwino, chofunikira ndikusunga madzi bwino. Kugwiritsa ntchito matope: zofunika kwambiri, kukhuthala kwakukulu, 150,000 ndizabwinoko. Glue ntchito: Amafunikira mtundu waposachedwa, kukhuthala kwakukulu.

Kodi hydroxypropyl methylcellulose ndi chiyani?

Hydroxypropyl methylcellulose, HydroxypropylMethylCellulose Chidule cha HPMC kapena MHPC alias: hypromellose; cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose ether, 2-hydroxypropylmethyl Cellulos eether. Cellulose hydroxypropyl methyl ether, Hyprolose.

Kugwiritsa ntchito HPMC mu putty powder, chifukwa cha thovu mu putty powder ndi chiyani?

HPMC imagwira ntchito yokulitsa, kusunga madzi ndikumanga mu putty powder. Osachita nawo chilichonse. Chifukwa cha kuwira: 1, madzi ndi ochuluka. 2, wosanjikiza wapansi siwouma, ingopakani wosanjikiza pamwamba, ndikosavuta kutulutsa thovu.　

Njira yamkati ndi kunja kwa khoma la putty?

Mkati khoma putty ufa: heavy calcium 800KG imvi kashiamu 150KG (wowuma etere, koyera wobiriwira, penmine nthaka, citric acid, polyacrylamide, etc. akhoza bwino anasankha kuwonjezera)

Kunja khoma putty ufa: simenti 350KG, heavy calcium 500KG, quartz mchenga 150KG, latex Powder 8-12KG, mapadi etere 3KG, wowuma etha 0.5KG, matabwa CHIKWANGWANI 2KG

Kodi pali kusiyana kotani pakati pa HPMC ndi MC?

MC ndi methyl cellulose. Pambuyo pa thonje loyengedwa ndi mankhwala a alkali, chloromethane imagwiritsidwa ntchito ngati etherifying agent, ndipo zochitika zingapo zimapangidwira kukonzekera cellulose ether. Mlingo wolowa m'malo nthawi zambiri umakhala 1.6 mpaka 2.0, ndipo kuchuluka kwa kusintha kumasiyana kutengera kusungunuka kwake. Ndi ya nonionic cellulose ether.

(1) Kusungidwa kwa madzi kwa methyl cellulose kumadalira kuchuluka kwa kuwonjezera, kukhuthala, kuwongolera kwa tinthu ndi kusungunuka. Kawirikawiri, kuchuluka kwa kuonjezera kumakhala kwakukulu, fineness ndi yaying'ono, ndi mamasukidwe akayendedwe ndi aakulu, ndipo mlingo wosungira madzi ndi wapamwamba. Kuchulukitsa kowonjezera kumakhudza kwambiri kuchuluka kwa kusungidwa kwa madzi, ndipo kuchuluka kwa mamasukidwe akayendedwe sikuli kofanana ndi kuchuluka kwa kusungirako madzi. Mlingo wa kuwonongeka zimadalira makamaka mlingo wa padziko kusinthidwa kwa mapadi particles ndi fineness wa particles. Pakati pa ma cellulose ethers omwe ali pamwambawa, methylcellulose ndi hydroxypropylmethylcellulose ali ndi kuchuluka kwa madzi osungira.

(2) Methylcellulose amasungunuka m’madzi ozizira, ndipo n’zovuta kusungunuka m’madzi otentha. Njira yamadzimadzi imakhala yokhazikika pa pH = 3 ~ 12. Zimagwirizana bwino ndi wowuma, guar chingamu ndi ma surfactants ena ambiri. Kutentha kukafika kutentha kwa gelation, chinthu cha gelation chimachitika.

(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa kusunga madzi kwa methyl cellulose. Nthawi zambiri, kutentha kumapangitsa kuti madzi asamasungidwe kwambiri. Ngati kutentha kwa matope kupitirira 40 ° C, kusungidwa kwa madzi kwa methyl cellulose kudzawonongeka kwambiri, zomwe zimakhudza kwambiri kugwira ntchito kwa matope.

(4) Methyl cellulose imakhudza kwambiri magwiridwe antchito komanso kumamatira kwa matope. “Kumatira” m'menemo kumatanthauza mphamvu yomatira yomwe imamveka pakati pa chida chogwiritsira ntchito ndi khoma, ndiko kuti, kukana kukameta ubweya wa matope. Kumamatira ndi kwakukulu, kukana kukameta ubweya wa matope ndi kwakukulu, mphamvu yofunikira ndi wogwira ntchito panthawi yogwiritsira ntchito imakhalanso yaikulu, ndipo ntchito yamatope imakhala yosauka.

Methylcellulose adhesion ndi yapakatikati pazinthu za cellulose ether. HPMC ndi hydroxypropylmethylcellulose, amene ndi nonionic mapadi wosakaniza efa wokonzedwa ndi mndandanda wa zochita ntchito okusayidi acetal ndi methyl kolorayidi monga etherifying agent pambuyo alkalization wa thonje woyengeka. Mlingo wolowa m'malo nthawi zambiri ndi 1.2 mpaka 2.0. Chikhalidwe chake ndi chosiyana kutengera chiŵerengero cha methoxyl zomwe zili ndi hydroxypropyl.

(1) Hydroxypropyl methylcellulose imasungunuka mosavuta m’madzi ozizira, ndipo zingakhale zovuta kusungunula m’madzi otentha. Komabe, kutentha kwake kwa gelation m'madzi otentha ndikokwera kwambiri kuposa kwa methyl cellulose. Kusungunuka m'madzi ozizira ndikwabwino kwambiri kuposa methyl cellulose. -

(2) Kukhuthala kwa hydroxypropylmethylcellulose kumagwirizana ndi kulemera kwa maselo ake, ndipo kukhuthala kwake kumakhala kwakukulu pamene kulemera kwa maselo kuli kwakukulu. Kutentha kumakhudzanso mamasukidwe ake, kutentha kumakwera, ndipo mamasukidwe ake amachepa. Komabe, kukhuthala kwake kumakhala ndi kutentha kochepa kuposa methyl cellulose. Yankho lake ndi lokhazikika kutentha.

(3) Hydroxypropyl methylcellulose ndi yokhazikika ku ma acid ndi maziko, ndipo njira yake yamadzimadzi imakhala yokhazikika pa pH = 2 ~ 12. Koloko ndi madzi a mandimu sakhala ndi zotsatira zambiri pa katundu wawo, koma zamchere zimathandizira kusungunuka kwawo ndikuwonjezera kukhuthala. Hydroxypropyl methylcellulose imakhala ndi kukhazikika kwa mchere wambiri, koma pamene mchere wa mchere uli wambiri, kukhuthala kwa hydroxypropyl methylcellulose njira kumawonjezeka.

(4) Kusungidwa kwa madzi kwa hydroxypropyl methylcellulose kumadalira kuchuluka kwa kuwonjezera, kukhuthala, ndi zina zotero, ndipo madzi osungira madzi pansi pa mlingo womwewo ndi wapamwamba kuposa wa methylcellulose.

(5) Hydroxypropyl methylcellulose akhoza kusakaniza ndi madzi sungunuka polima pawiri kupanga yunifolomu, apamwamba mamasukidwe akayendedwe njira. Monga mowa wa polyvinyl, wowuma ether, chingamu chamasamba ndi zina zotero.

(6) Hydroxypropyl methylcellulose imakhala yomatira kwambiri kumatope kuposa methyl cellulose.

(7) Hydroxypropyl methylcellulose imakhala ndi kukana kwa enzymatic kuposa methylcellulose, ndipo yankho lake silingawonongeke kwambiri kuposa methylcellulose.

HPMC mamasukidwe akayendedwe ndi kutentha ubale, kodi tiyenera kulabadira chiyani mu ntchito zothandiza?

The mamasukidwe akayendedwe a HPMC ndi inversely proportional kutentha, ndiko, mamasukidwe akayendedwe ukuwonjezeka ndi kuchepa kutentha. Kukhuthala kwa chinthu chomwe timakonda kunena ndizomwe zimachitika poyesa njira yake yamadzi 2% pa kutentha kwa madigiri 20 Celsius. Muzochita zothandiza, m'madera omwe ali ndi kusiyana kwakukulu kwa kutentha pakati pa chilimwe ndi nyengo yozizira, ziyenera kukumbukiridwa kuti tikulimbikitsidwa kugwiritsa ntchito kukhuthala kochepa kwambiri m'nyengo yozizira, yomwe imakhala yabwino kwambiri pomanga. Apo ayi, kutentha kukakhala kotsika, kukhuthala kwa cellulose kumawonjezeka, ndipo ikaphwanyidwa, dzanja limakhala lolemera. Sing'anga mamasukidwe akayendedwe: 75000-100000 Makamaka ntchito putty Chifukwa: madzi posungira mkulu mamasukidwe akayendedwe: 150000-200000 zimagwiritsa ntchito polystyrene granule kutchinjiriza matope ufa ndi vitrified microbead kutchinjiriza matope. Chifukwa: kukhuthala kwakukulu, matope sikophweka kugwa Inde, sag, zomangamanga bwino. Koma ambiri, kukwezeka kwa mamasukidwe ake kumapangitsa kuti madzi asungidwe bwino, motero mbewu zambiri zowuma zowuma zimaganizira mtengo wake, m'malo mwa sing'anga ndi otsika mamasukidwe a cellulose ndi sing'anga mamasukidwe akayendedwe mapadi (75000-100000). (20000-40000) kuti muchepetse ndalama zomwe zawonjezeredwa.