Kuyamba kwa Hydroxypropyl methyl cellulose HPMC

1. Mwachidule

Hydroxypropyl Methyl Cellulose (HPMC) ndi ether yosakhala ionic cellulose yopangidwa kuchokera ku zinthu zachilengedwe za polima - mapadi kudzera munjira zingapo zama mankhwala. Hydroxypropyl methylcellulose (HPMC) ndi ufa wopanda fungo, wopanda pake, wopanda poizoni wodzipangira utoto, womwe ukhoza kusungunuka m'madzi ozizira kuti upangire njira yowonekera yowoneka bwino, yomwe ili ndi ntchito za thickening, kugwirizana, kubalalitsa, emulsifying, kupanga filimu, ndi kuyimitsa, kutsatsa, kuyika gelation, zochitika zapamtunda, kusunga chinyezi komanso chitetezo cha colloid.

Hydroxypropyl methylcellulose (HPMC) angagwiritsidwe ntchito pomanga, zokutira, utomoni kupanga, zoumba, mankhwala, chakudya, nsalu, ulimi, zodzoladzola ndi mafakitale fodya.
2, Zogulitsa ndi magulu Zogulitsa zimagawidwa m'madzi ozizira sungunuka mtundu S ndi mtundu wamba
Mafotokozedwe Wamba aHydroxypropyl Methyl Cellulose

Mawonekedwe a viscosity

3,mankhwala chikhalidwe

Katundu: Izi ndi zoyera kapena zoyera ufa, zopanda fungo, zopanda pake komansozopanda poizoni.

Kusungunuka kwamadzi komanso kukulitsa mphamvu: Izi zitha kusungunuka m'madzi ozizira kuti apange njira yowonekera yowonekera.

Kusungunuka mu zosungunulira za organic: Chifukwa zimakhala ndi magulu ena a hydrophobic methoxyl, mankhwalawa amatha kusungunuka muzosungunulira zina, ndipo amathanso kusungunuka mu zosungunulira zosakanikirana ndi madzi ndi zinthu zamoyo.

Kukaniza mchere: Popeza mankhwalawa ndi polima osakhala ndi ionic, amakhala okhazikika mumiyendo yamadzi yamchere yamchere kapena ma electrolyte achilengedwe.

Zochita zapamtunda: Njira yamadzimadzi ya mankhwalawa imakhala ndi zochitika zapamtunda, ndipo imakhala ndi ntchito ndi zinthu monga emulsification, chitetezo cha colloid ndi kukhazikika kwachibale.

Thermal gelation: Pamene njira yamadzimadzi ya mankhwalawa imatenthedwa ndi kutentha kwina, imakhala yosamveka mpaka imapanga (poly) flocculation state, kotero kuti yankho limataya mamasukidwe ake. Koma pambuyo pa kuziziritsa, izo zidzasandulika kukhala njira yothetsera vutoli kachiwiri. Kutentha komwe kumapezeka gelation kumadalira mtundu wa mankhwala, kuchuluka kwa yankho ndi kuchuluka kwa kutentha.

Kukhazikika kwa PH: Kukhuthala kwa njira yamadzimadzi ya mankhwalawa ndi yokhazikika mkati mwa PH3.0-11.0.

Mphamvu yosungira madzi: Popeza mankhwalawa ndi hydrophilic, amatha kuwonjezeredwa kumatope, gypsum, utoto, ndi zina zotero kuti asunge madzi osungira madzi muzinthuzo.

Kusungirako mawonekedwe: Poyerekeza ndi ma polima ena osungunuka m'madzi, njira yamadzimadzi yamtunduwu imakhala ndi ma viscoelastic apadera. Kuwonjezera kwake kumatha kusunga mawonekedwe a zinthu za ceramic extruded osasinthika.

Lubricity: Kuwonjezera mankhwalawa kumatha kuchepetsa kugundana ndikuwongolera kukhathamiritsa kwa zinthu zadothi zopangidwa ndi ceramic ndi zinthu za simenti.

Kapangidwe ka filimu: Izi zimatha kupanga filimu yosinthika, yowonekera bwino yokhala ndi makina abwino kwambiri, ndipo imakhala ndi mafuta abwino komanso kukana mafuta.

4. Thupi ndi mankhwala katundu

Kukula kwa tinthu: 100 mesh pass rate ndi yayikulu kuposa 98.5%, 80 mesh pass rate ndi 100%

Kutentha kwa carbonization: 280 ~ 300 ℃

Kachulukidwe wowoneka: 0.25 ~ 0.70 / masentimita mphamvu yokoka 1.26 ~ 1.31

Kutentha kwa kutentha: 190 ~ 200 ℃

Kupanikizika kwapamtunda: 2% yankho lamadzi ndi 42 ~ 56dyn / cm

Kusungunuka: Kusungunuka m'madzi ndi zosungunulira zina, njira yamadzimadzi imakhala ndi ntchito yapamwamba. Kuwonekera kwapamwamba. Kuchita kokhazikika, kusintha kwa kusungunuka ndi mamasukidwe akayendedwe, kutsika kwa mamasukidwe akayendedwe, kumapangitsanso kusungunuka.

HPMC alinso ndi makhalidwe thickening luso, kukana mchere, PH bata, kusunga madzi, dimensional bata, kwambiri mafilimu kupanga katundu, ndi osiyanasiyana enzyme kukana, dispersibility ndi cohesiveness.

5, cholinga chachikulu

Industrial kalasi HPMC zimagwiritsa ntchito ngati dispersant kupanga polyvinyl kolorayidi, ndipo ndi wothandizila waukulu wothandiza pokonzekera PVC ndi kuyimitsidwa polymerization. Kuphatikiza apo, itha kugwiritsidwa ntchito ngati thickener, stabilizer, emulsifier, excipient, ndi wothandizira madzi popanga mafuta ena a petrochemicals, zokutira, zomangira, zochotsa utoto, mankhwala aulimi, inki, kusindikiza nsalu ndi utoto, zoumba, mapepala. , zodzoladzola, etc. , filimu kupanga wothandizila, etc. The ntchito mu utomoni kupanga akhoza kupanga mankhwala analandira ndi makhalidwe a particles wokhazikika ndi lotayirira, oyenera mphamvu yokoka ndi ntchito yabwino processing, motero m'malo gelatin ndi polyvinyl mowa monga dispersants.

Njira zisanu zochotsera:

(1). Tengani madzi otentha ofunikira, ikani mu chidebe ndikutenthetsa pamwamba pa 80 ° C, ndipo pang'onopang'ono yonjezerani mankhwalawa moyambitsa pang'onopang'ono. Ma cellulose amayandama pamadzi poyamba, koma amamwazikana pang'onopang'ono kuti apange matope ofanana. The yankho utakhazikika pamene akuyambitsa.

(2). Kapenanso, tenthetsani 1/3 kapena 2/3 ya madzi otentha pamwamba pa 85 ° C, onjezani mapadi kuti mupeze madzi otentha, kenaka yikani madzi ozizira otsalawo, pitirizani kuyambitsa, ndi kuziziritsa kusakaniza kwake.

(3). Ukonde wa cellulose ndi wabwino kwambiri, ndipo umapezeka ngati tinthu tating'ono tating'ono mu ufa wosakanikirana bwino, ndipo umasungunuka mwachangu ukakumana ndi madzi kuti apange mamasukidwe ofunikira.

(4). Pang'onopang'ono ndi mofanana onjezerani cellulose kutentha kwa firiji, kuyambitsa mosalekeza mpaka yankho lowonekera lipangidwe.