1. Dzina lachinthu:
01. Dzina la mankhwala: hydroxypropyl methylcellulose
02. Dzina lonse mu Chingerezi: Hydroxypropyl Methyl Cellulose
03. Chidule cha Chingerezi: HPMC
2. Thupi ndi mankhwala:
01. Maonekedwe: ufa woyera kapena woyera.
02. Kukula kwa tinthu; chiphaso cha 100 mauna ndi wamkulu kuposa 98,5%; chiphaso cha 80 mauna ndi chachikulu kuposa 100%.
03. Kutentha kwa carbonization: 280°300℃
04. Kachulukidwe kowoneka: 0.25～0.70/cm3 (kawirikawiri pafupifupi 0.5g/cm3), mphamvu yokoka yeniyeni 1.26-1.31.
05. Kutentha kwa kutentha: 190 ~ 200℃
06. Kuvuta kwa pamwamba: 2% yankho lamadzi ndi 42 ~ 56dyn / cm.
07. Zosungunuka m'madzi ndi zosungunulira zina, monga ethanol / madzi, propanol / madzi, trichloroethane, ndi zina zotero moyenerera.
Madzi amadzimadzi amagwira ntchito pamtunda. Kuwonekera kwakukulu, magwiridwe antchito okhazikika, kutentha kwa gel osakaniza ndi mitundu yosiyanasiyana
Zosiyana, solubility zimasintha ndi mamasukidwe akayendedwe, m'munsi mamasukidwe akayendedwe, kusungunuka kwakukulu, magwiridwe antchito amitundu yosiyanasiyana ya hydroxypropyl methylcellulose (HPMC) ali ndi kusiyana kwina, kusungunuka kwa hydroxypropyl methylcellulose (HPMC) m'madzi sikukhudzidwa ndi phindu la PH. .
08. Ndi kuchepa kwa methoxyl, gel point imawonjezeka, kusungunuka kwa madzi kumachepa, ndipo ntchito ya hydroxypropyl methylcellulose (HPMC) imachepanso.
09. Hydroxypropyl methylcellulose (HPMC) imakhalanso ndi mphamvu zowonjezera, kukana mchere, ufa wochepa wa phulusa, kukhazikika kwa PH, kusungirako madzi, kukhazikika kwapakati, kupanga mafilimu abwino kwambiri, komanso kukana kwa ma enzyme osiyanasiyana, makhalidwe obalalika monga kugonana ndi zomatira.
Makhalidwe atatu, hydroxypropyl methylcellulose (HPMC):
Chogulitsacho chimaphatikiza zinthu zambiri zakuthupi ndi zamankhwala kuti zikhale chinthu chapadera chomwe chimagwiritsidwa ntchito kangapo, ndipo mawonekedwe ake ndi awa:
(1) Kusunga madzi: Imatha kusunga madzi pamalo otsekeka monga matabwa a simenti ndi njerwa.
(2) Kapangidwe ka filimu: Itha kupanga filimu yowonekera, yolimba komanso yofewa yokhala ndi mafuta abwino kwambiri.
(3) Organic solubility: Mankhwalawa amasungunuka mu zosungunulira za organic, monga ethanol/madzi, propanol/madzi, dichloroethane, ndi zosungunulira zomwe zimapangidwa ndi zosungunulira ziwiri za organic.
(4) Gelation yotentha: Pamene njira yamadzimadzi ya mankhwala itenthedwa, imapanga gel osakaniza, ndipo gel opangidwa adzakhala yankho kachiwiri pambuyo kuzirala.
(5) Ntchito yapamtunda: Perekani ntchito zapamtunda mu yankho kuti mukwaniritse emulsification yofunikira ndi colloid yoteteza, komanso kukhazikika kwa gawo.
(6) Kuyimitsidwa: Kungathe kulepheretsa mpweya wa tinthu tating'onoting'ono, motero kulepheretsa mapangidwe a matope.
(7) Colloid yodzitchinjiriza: imatha kuteteza madontho ndi tinthu ting'onoting'ono kuti tisagwirizane kapena kukhazikika.
(8) Zomatira: Zimagwiritsidwa ntchito ngati zomatira popangira utoto, fodya, ndi zopangidwa ndi mapepala, zimakhala ndi ntchito yabwino kwambiri.
(9) Kusungunuka kwamadzi: Chogulitsacho chimatha kusungunuka m'madzi mosiyanasiyana, ndipo ndende yake yayikulu imangokhala ndi viscosity.
(10) Kusakhazikika kwa ionic: Chopangidwacho ndi ether yosakhala ionic cellulose, yomwe sagwirizana ndi mchere wachitsulo kapena ma ion ena kuti apange madzi osasungunuka.
(11) Kukhazikika kwa acid-base: koyenera kugwiritsidwa ntchito mkati mwa PH3.0-11.0.
(12) Zosakoma komanso zopanda fungo, zosakhudzidwa ndi metabolism; amagwiritsidwa ntchito ngati zowonjezera zakudya ndi mankhwala, sizidzasinthidwa muzakudya ndipo sizipereka zopatsa mphamvu.
4. Hydroxypropyl methylcellulose (HPMC) njira yothetsera:
Zinthu za hydroxypropyl methylcellulose (HPMC) zikawonjezedwa mwachindunji m'madzi, zimakhazikika ndikusungunuka, koma kusungunuka kumeneku kumakhala pang'onopang'ono komanso kovuta. Pali njira zitatu zoyankhira pansipa, ndipo ogwiritsa ntchito amatha kusankha njira yabwino kwambiri malinga ndi momwe amagwiritsidwira ntchito:
1. Njira yamadzi otentha: Popeza hydroxypropyl methylcellulose (HPMC) sisungunuka m'madzi otentha, gawo loyambirira la hydroxypropyl methylcellulose (HPMC) limatha kumwazikana m'madzi otentha, ndiyeno litakhazikika, njira zitatu za A zimafotokozedwa ngati. zotsatirazi:
1). Ikani madzi otentha ofunikira mumtsuko ndikutenthetsa pafupifupi 70 ° C. Pang'onopang'ono yonjezerani hydroxypropyl methylcellulose (HPMC) pansi pa kugwedezeka pang'onopang'ono, hydroxypropyl methylcellulose (HPMC) imayamba kuyandama pamwamba pa madzi, ndipo pang'onopang'ono imapanga slurry, kuziziritsa slurry pansi pa kugwedeza.
2). Kutenthetsa 1/3 kapena 2/3 (kuchuluka kofunikira) kwa madzi mumtsuko ndikutenthetsa mpaka 70 ° C. Malinga ndi njira ya 1), kumwaza hydroxypropyl methylcellulose (HPMC) kukonzekera madzi otentha slurry Kenako onjezerani madzi ozizira otsalawo kapena madzi oundana mumtsuko, kenaka yikani hydroxypropyl methylcellulose (HPMC) slurry wamadzi otentha omwe tatchulawa. madzi ozizira, ndi kusonkhezera, ndiyeno kuziziritsa osakaniza.
3). Onjezerani 1/3 kapena 2/3 ya madzi ofunikira mumtsuko ndikutenthetsa mpaka 70 ° C. Malinga ndi njira ya 1), kumwaza hydroxypropyl methylcellulose (HPMC) kukonzekera madzi otentha slurry; Madzi otsala a madzi ozizira kapena ayezi amawonjezeredwa ku slurry yamadzi otentha ndipo kusakaniza kumakhazikika pambuyo poyambitsa.
2. Njira yophatikizira ufa: hydroxypropyl methylcellulose (HPMC) tinthu tating'onoting'ono ta ufa ndi wofanana kapena wokulirapo wa zosakaniza zina za powdery zimamwazikana ndi kusakaniza kowuma, kenako kusungunuka m'madzi, ndiye hydroxypropyl methylcellulose Base cellulose (HPMC) imatha kusungunuka popanda agglomeration. . 3. Organic zosungunulira kunyowetsa njira: pre-kumwazikana kapena yonyowa hydroxypropyl methylcellulose (HPMC) ndi organic solvents monga ethanol, ethylene glycol kapena mafuta, ndiyeno kupasuka m'madzi. Panthawiyi, hydroxypropyl methylcellulose (HPMC) imathanso kusungunuka bwino.
5. Ntchito zazikulu za hydroxypropyl methylcellulose (HPMC):
Hydroxypropyl methylcellulose (HPMC) itha kugwiritsidwa ntchito ngati thickener, dispersant, emulsifier and film-forming agent. Zogulitsa zake zamafakitale zitha kugwiritsidwa ntchito pamankhwala atsiku ndi tsiku, zamagetsi, ma resin opangira, zomangamanga ndi zokutira.
1. Kuyimitsidwa polymerization:
Popanga ma resins opangidwa monga polyvinyl chloride (PVC), polyvinylidene chloride ndi ma copolymers ena, kuyimitsidwa kwa polymerization kumagwiritsidwa ntchito kwambiri ndipo ndikofunikira kukhazikitsira kuyimitsidwa kwa ma hydrophobic monomers m'madzi. Monga polima wosungunuka m'madzi, hydroxypropyl methylcellulose (HPMC) mankhwala ali ndi ntchito yabwino kwambiri padziko lapansi ndipo amakhala ngati colloidal zoteteza, zomwe zingalepheretse kuphatikizika kwa tinthu ta polima. Komanso, ngakhale hydroxypropylmethylcellulose (HPMC) ndi madzi sungunuka polima, komanso pang'ono sungunuka mu hydrophobic monomers ndi kumawonjezera porosity wa monomers kumene polymeric particles amapangidwa, kotero kuti Amapereka ma polima ndi luso kwambiri kuchotsa monomers otsalira. ndi kuwonjezera kuyamwa kwa plasticizers.
2. Popanga zida zomangira, hydroxypropyl methylcellulose (HPMC) itha kugwiritsidwa ntchito:
1). zomatira ndi caulking wothandizira kwa gypsum ofotokoza zomatira tepi;
2). Kumanga njerwa za simenti, matailosi ndi maziko;
3). stucco yopangidwa ndi pulasitiki;
4). pulasitala wopangidwa ndi simenti;
5). Mu chilinganizo cha utoto ndi utoto remover.
Nthawi yotumiza: May-24-2023