Anxin Cellulose Co., Ltd ndi kampani yopanga zinthu zopangidwa ndi Hydroxypropyl methyl cellulose HPMC yomwe imapanga zinthu zopangidwa ndi fakitale ku China, yokhala ndi dzina lapamwamba kwambiri la AnxinCel® Cellulose ethers.
Kuwona mwachangu kwa hydroxypropyl methylcellulose HPMC
Choyamba, kodi ntchito yaikulu ya hydroxypropyl methyl cellulose ndi yotani?
HPMC IMAGWIRITSIDWA NTCHITO KWAMBIRI MU ZIPANGIZO ZAMANGIDWE, ZOKHUTIRA, ZOSANGIDWA, ZAMADERA, MANKHWALA, CHAKUDYA, NSALU, Ulimi, ZOZOLETSA, FODYA NDI MAGWIRA NTCHITO ENA. HPMC ikhoza kugawidwa m'magulu a mafakitale, kalasi ya chakudya ndi kalasi ya mankhwala malinga ndi kagwiritsidwe ntchito kake.
Chachiwiri, hydroxypropyl methyl cellulose imagawidwa m'mitundu ingapo, pakati pa yomwe pali kusiyana kotani?
HPMC ingagawidwe m'magulu a instant type (grade suffix “S”) ndi hot soluble type, instant solvent products, m'madzi ozizira zimafalikira mwachangu, zimasowa m'madzi, panthawiyi madziwo alibe viscosity, chifukwa HPMC imangofalikira m'madzi, palibe kusungunuka kwenikweni. Pafupifupi (sakanizani) kwa mphindi ziwiri, viscosity ya madziwo imawonjezeka pang'onopang'ono, ndikupanga colloid yowoneka bwino yokhuthala. Zinthu zosungunuka zotentha, m'madzi ozizira, zimatha kufalikira mwachangu m'madzi otentha, zimasowa m'madzi otentha, monga kutentha mpaka kutentha kwina (malinga ndi kutentha kwa gel kwa chinthucho), viscosity imawonekera pang'onopang'ono, mpaka kupanga colloid yowoneka bwino yokhuthala.
Chachitatu, njira yothetsera hydroxypropyl methyl cellulose ili ndi chiyani?
1. Mitundu yonse ikhoza kuwonjezeredwa ku zinthuzo pogwiritsa ntchito njira yosakaniza youma;
2, ayenera kuwonjezeredwa mwachindunji ku madzi otentha, ndi bwino kugwiritsa ntchito madzi ozizira omwe amabalalitsa, mutatha kuwonjezera madziwo kwa mphindi 10-90 kuti muwakule (kusakaniza, kusakaniza, kusakaniza)
3. Chitsanzo chofala choyamba chimasakanizidwa posakaniza ndi madzi otentha, kenako chimasungunuka powonjezera madzi ozizira pambuyo posakaniza ndi kuziziritsa.
4. Ngati chochitika cha kuyika ndi kukulunga chikuchitika pamene chikusungunuka, ndi chifukwa chakuti kusakaniza sikukwanira kapena chitsanzo chachizolowezi chimawonjezedwa mwachindunji m'madzi ozizira. Panthawiyi, chiyenera kusunthidwa mwachangu.
5. Ngati thovu limapangidwa litasungunuka, limatha kusiyidwa kwa maola 2-12 (nthawi yeniyeniyo imatsimikiziridwa ndi kukhazikika kwa yankho) kapena kuchotsedwa pogwiritsa ntchito vacuum-extract, pressurization ndi njira zina, ndipo kuchuluka koyenera kwa mankhwala oletsa thovu kungawonjezedwenso.
Chachinayi, kodi n'kosavuta komanso kothandiza bwanji kudziwa momwe hydroxypropyl methyl cellulose imakhalira kapena momwe imagwera?
1, kuyera, ngakhale kuti sikungathe kudziwa ngati HPMC ndi yabwino, ndipo ngati iwonjezeredwa mu njira yopangira, choyeracho chidzakhudza ubwino wake, koma, zinthu zabwino makamaka kuyera ndi zabwino.
2, kupyapyala: Kupyapyala kwa HPMC nthawi zambiri kumakhala ndi mauna 80 ndi mauna 100, 120 kuchepera, ndipo kupyapyala kumakhala bwino.
3, kufalikira kwa kuwala: HPMC m'madzi, kupanga colloid yowonekera, kuwona kufalikira kwake kwa kuwala, kukulirapo kwa chinthu chabwino, kufotokoza kuti sichisungunuka mkati, ketulo yoyima yochitapo kanthu ndi madigiri ambiri ndi yabwino, idzatumiza ketulo yoyima yochitapo kanthu, koma singathe kufotokoza kuti khalidwe la kupanga ketulo yoyima ndi labwino kuposa kupanga ketulo, pali zinthu zambiri zomwe zimatsimikiza khalidwe la chinthu.
4, chiŵerengero: chiŵerengerocho chikakhala chachikulu, cholemera kwambiri chimakhala chabwino kuposa chachikulu, nthawi zambiri chifukwa chakuti kuchuluka kwa hydroxypropyl kuli kokwera, kuchuluka kwa hydroxypropyl kumakhala kwakukulu, ndiye kuti kusunga madzi kumakhala bwino.
Zisanu, hydroxypropyl methyl cellulose mu kuchuluka kwa ufa wa putty?
HPMC imagwiritsa ntchito mlingo weniweni, malinga ndi nyengo, kutentha, phulusa la calcium m'deralo, ufa wa putty ndi zofunikira za makasitomala za mtundu wosiyana, ndipo pali kusiyana pakati pa 4-5 kg.
Six, hydroxypropyl methyl cellulose viscosity ndi yabwino kwambiri?
Musatope ndi ufa wa mwana ndi wa ANTHU ONSE 100,000, chabwino, CHOFUNIKA MU MTOTO NDI CHAMBIRI, MUKUFUNA 150,000 KUTI MUKHALE ABWINO KUGWIRITSA NTCHITO, ndipo, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kenako ndikukhuthala. Mu ufa wa putty, bola ngati kusunga madzi kuli bwino, kukhuthala kuli kochepa (7-8), n'zothekanso, ndithudi, kukhuthala kumakhala kwakukulu, kusungunuka kwa madzi kumakhala bwino, pamene kukhuthala kuli koposa 100,000, kukhuthala sikukhudza kwambiri kusungunuka kwa madzi.
Zisanu ndi ziwiri, kodi zizindikiro zazikulu zaukadaulo za hydroxypropyl methyl cellulose ndi ziti?
Kuchuluka kwa hydroxypropyl
Kuchuluka kwa Methyl
kukhuthala
phulusa
Kuchepetsa thupi kouma
Zisanu ndi zitatu, kodi zinthu zazikulu zopangira hydroxypropyl methyl cellulose ndi ziti?
Zipangizo zazikulu za HPMC: thonje loyengedwa, chloromethane, propylene oxide, zipangizo zina zopangira, mapiritsi a alkali, acid toluene.
Nine, hydroxypropyl methyl cellulose mu ntchito ya putty powder, udindo waukulu, kaya mankhwala?
Mu ufa wa putty, umagwira ntchito zitatu: kukhuthala, kusunga madzi ndi kumanga. Kukhuthala, cellulose imatha kupindika kuti ikhale ngati suspension, 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 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.
Hydroxypropyl methyl cellulose ndi ether ya cellulose yosakhala ionic, ndiye kodi non-ionic ndi chiyani?
Kawirikawiri, zinthu zopanda mphamvu sizimagwira nawo ntchito ya mankhwala.
CMC (carboxymethyl cellulose) ndi ya cationic cellulose, kotero kukumana ndi imvi ya calcium kumakhala ngati nyemba zouma.
11. Kodi kutentha kwa gel kwa hydroxypropyl methylcellulose kumakhudzana bwanji ndi?
Kutentha kwa gel ya HPMC kumagwirizana ndi kuchuluka kwa methoxy komwe kuli. Kuchuluka kwa methoxy komwe kuli kotsika, kutentha kwa gel kumakhala kwakukulu.
Twelve, ufa wa putty ndi hydroxypropyl methyl cellulose sizili ndi ubale?
Ndikofunikira!! HPMC ndi yosasunga madzi mokwanira, imayambitsa ufa.
13. Kodi kusiyana pakati pa yankho la madzi ozizira ndi yankho lotentha la hydroxypropyl methyl cellulose ndi kotani pakupanga?
Mtundu wosungunuka m'madzi ozizira a HPMC umatha kutsukidwa ndi glyoxal pamwamba, m'madzi ozizira umafalikira mwachangu, koma susungunuka kwenikweni, kukhuthala kumakwera, ndipo umasungunuka. Mtundu wosungunuka m'madzi ozizira sunatsukidwe ndi glyoxal pamwamba. Kuchuluka kwa glyoxal ndi kwakukulu, kufalikira kwake ndi kwachangu, koma kukhuthala kwake ndi pang'onopang'ono, kukhuthala kwake ndi kochepa, m'malo mwake.
14, fungo la hydroxypropyl methyl cellulose ndi momwe mungabwezeretsere udindo?
HPMC yopangidwa ndi njira yosungunulira imapangidwa ndi toluene ndi isopropyl alcohol ngati chosungunulira. Ngati kutsuka sikuli bwino, padzakhala kukoma kotsalira. (Kubwezeretsa fungo loipa ndiye njira yofunika kwambiri yopangira fungo)
15, ntchito zosiyanasiyana, momwe mungasankhire hydroxypropyl methyl cellulose yoyenera?
Ufa wa putty: wofunika kwambiri kuti madzi asungidwe bwino, wosavuta kumanga (kalasi yoyenera: 7010N)
Simenti yamba yochokera ku simenti: kusunga madzi ambiri, kukana kutentha kwambiri, kukhuthala nthawi yomweyo (kalasi yoyenera: HPK100M)
Kugwiritsa ntchito guluu womangira: zinthu zongogwira ntchito mwachangu, kukhuthala kwakukulu. (Mtundu wovomerezeka: HPK200MS)
Dothi la gypsum: kusungira madzi ambiri, kukhuthala kwapakati ndi kotsika, kukhuthala kwa nthawi yomweyo (kalasi yovomerezeka: HPK600M)
16, hydroxypropyl methyl cellulose ndi chiyani dzina lake?
HPMC kapena MHPC yotchedwa hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
Khumi ndi zisanu ndi ziwiri, hydroxypropyl methyl cellulose mu kugwiritsa ntchito ufa wa putty, putty powder bubble chifukwa chiyani?
HPMC mu ufa wa putty, imagwira ntchito zitatu monga kukhuthala, kusunga madzi ndi kapangidwe kake, chifukwa cha thovu:
1. Madzi ochulukirapo amawonjezedwa.
2. Pansi pake sipauma, pamwamba pa gawo lina la kukanda, komanso n'zosavuta kuphukira.
Khumi ndi zisanu ndi zitatu, hydroxypropyl methyl cellulose ndi MC pali kusiyana kotani:
MC ndi methylcellulose, yomwe imapangidwa ndi thonje loyengedwa bwino pambuyo pa mankhwala a alkali ndi methane chloride ngati etherification kudzera muzochita zingapo kuti apange cellulose ether. Kawirikawiri, mlingo wa kusintha ndi 1.6-2.0, ndipo kusungunuka kwa madigiri osiyanasiyana a kusinthana ndi kosiyana, komwe ndi kwa 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, ngati kuchuluka kwa kuwonjezera kuli kwakukulu, kusalala ndi kochepa ndipo kukhuthala ndi kwakukulu, kuchuluka kwa kusungunuka kwa madzi kumakhala kwakukulu. Kuchuluka kwa kuwonjezera kumakhudza kwambiri kuchuluka kwa kusungunuka kwa madzi, ndipo kukhuthala sikukhudzana ndi kuchuluka kwa kusungunuka kwa madzi. Kuthamanga kwa kusungunuka kumadalira makamaka pa mlingo wa kusintha kwa pamwamba pa tinthu tating'onoting'ono ta cellulose ndi kusalala kwa tinthu tating'onoting'ono. Mu cellulose yomwe ili pamwambapa, kuchuluka kwa kusungunuka kwa madzi kwa methyl cellulose ndi hydroxypropyl methyl cellulose kumakhala kwakukulu.
(2) Methyl cellulose imatha kusungunuka m'madzi ozizira, kusungunuka kwa madzi otentha kudzakumana ndi zovuta, yankho lake lamadzi lomwe lili pakati pa pH = 3-12 ndi lokhazikika kwambiri, ndipo wowuma, komanso kuyanjana kwa surfactant ambiri kumakhala bwino, kutentha kukafika kutentha kwa gelation, chinthu chodziwika bwino cha gelation chidzachitika.
(3) Kusintha kwa kutentha kudzakhudza kwambiri kuchuluka kwa madzi omwe amasungidwa mu methyl cellulose, nthawi zambiri kutentha kukakhala kwakukulu, komwe kumakhudza kwambiri kusungidwa kwa madzi. Ngati kutentha kwa matope kupitirira madigiri 40, kusungidwa kwa madzi kwa methyl cellulose kudzakhala koipa kwambiri, zomwe zidzakhudza kwambiri kapangidwe ka matope.
(4) Methyl cellulose imakhudza kwambiri kapangidwe ndi kumatirira kwa matope. Pano, kumatirira kumatanthauza mphamvu yomatira yomwe imamveka pakati pa chida chomatira cha ogwira ntchito 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.
Nthawi yotumizira: Sep-07-2022