1. Dzina la malonda:
01. Dzina la mankhwala: hydroxypropyl methylcellulose
02. Dzina lonse mu Chingerezi: Hydroxypropyl Methyl Cellulose
03. Chidule cha Chingerezi: HPMC
2. Kapangidwe ka thupi ndi mankhwala:
01. Maonekedwe: ufa woyera kapena wosakhala woyera.
02. Kukula kwa tinthu tating'onoting'ono; kuchuluka kwa maukonde 100 ndi kokulirapo kuposa 98.5%; kuchuluka kwa maukonde 80 ndi kokulirapo kuposa 100%.
03. Kutentha kwa kaboni: 280 ～300 ℃
04. Kuchuluka kooneka: 0.25~0.70/cm3 (nthawi zambiri pafupifupi 0.5g/cm3), mphamvu yokoka yeniyeni 1.26-1.31.
05. Kutentha kwa mtundu: 190 ～200 ℃
06. Kukanika kwa pamwamba: 2% yankho lamadzi ndi 42 ～56dyn/cm.
07. Sungunuka m'madzi ndi zinthu zina zosungunulira, monga ethanol/madzi, propanol/madzi, trichloroethane, ndi zina zotero. moyenerera.
Mayankho amadzi amagwira ntchito pamwamba. Kuwonekera bwino, magwiridwe antchito okhazikika, kutentha kwa zinthu za gel zokhala ndi mawonekedwe osiyanasiyana
Mosiyana, kusungunuka kumasintha ndi kukhuthala, kukhuthala kutsika, kusungunuka kumakhala kwakukulu, magwiridwe antchito a hydroxypropyl methylcellulose (HPMC) ali ndi kusiyana kwina, kusungunuka kwa hydroxypropyl methylcellulose (HPMC) m'madzi sikukhudzidwa ndi PH value effect.
08. Pamene kuchuluka kwa methoxyl kumachepa, mfundo ya gel imawonjezeka, kusungunuka kwa madzi kumachepa, ndipo ntchito ya pamwamba ya hydroxypropyl methylcellulose (HPMC) imachepanso.
09. Hydroxypropyl methylcellulose (HPMC) ilinso ndi mphamvu yokhuthala, kukana mchere, ufa wochepa wa phulusa, kukhazikika kwa PH, kusunga madzi, kukhazikika kwa mawonekedwe, mphamvu yabwino kwambiri yopangira filimu, komanso kukana ma enzyme osiyanasiyana, makhalidwe osiyanasiyana monga kugonana ndi kumamatira.
Zitatu, makhalidwe a hydroxypropyl methylcellulose (HPMC):
Chogulitsachi chimaphatikiza zinthu zambiri zakuthupi ndi zamakemikolo kuti chikhale chinthu chapadera chokhala ndi ntchito zosiyanasiyana, ndipo zinthu zosiyanasiyana ndi izi:
(1) Kusunga madzi: Kumatha kusunga madzi pamalo obowoka monga matabwa a simenti pakhoma ndi njerwa.
(2) Kupanga filimu: Imatha kupanga filimu yowonekera bwino, yolimba komanso yofewa yokhala ndi mphamvu yabwino kwambiri yolimbana ndi mafuta.
(3) Kusungunuka kwa zinthu zachilengedwe: Chogulitsachi chimasungunuka m'zinthu zina zachilengedwe monga ethanol/madzi, propanol/madzi, dichloroethane, ndi njira yosungunulira yopangidwa ndi zinthu ziwiri zachilengedwe.
(4) Kutenthetsa: Madzi a chinthucho akatenthedwa, amapanga gel, ndipo gel yopangidwayo idzakhalanso yankho pambuyo pozizira.
(5) Ntchito ya pamwamba: Perekani ntchito ya pamwamba mu yankho kuti mukwaniritse emulsification yofunikira ndi colloid yoteteza, komanso kukhazikika kwa gawo.
(6) Kuyimitsidwa: Kungalepheretse kuti tinthu tolimba tisalowe m'madzi, motero kuletsa mapangidwe a matope.
(7) Colloid yoteteza: imatha kuletsa madontho ndi tinthu tating'onoting'ono kuti tisagwirizane kapena kukhuthala.
(8) Kumatirira: Imagwiritsidwa ntchito ngati guluu wa utoto, zinthu zopangidwa ndi fodya, ndi zinthu zopangidwa ndi mapepala, ndipo imagwira ntchito bwino kwambiri.
(9) Kusungunuka kwa madzi: Chogulitsachi chikhoza kusungunuka m'madzi mosiyanasiyana, ndipo kuchuluka kwake kwakukulu kumachepetsedwa ndi kukhuthala.
(10) Kusagwira ntchito kwa ionic: Chogulitsachi ndi ether ya cellulose yosakhala ionic, yomwe sigwirizana ndi mchere wachitsulo kapena ma ayoni ena kuti apange ma precipitates osasungunuka.
(11) Kukhazikika kwa asidi: koyenera kugwiritsidwa ntchito mkati mwa PH3.0-11.0.
(12) Zopanda kukoma komanso fungo, sizimakhudzidwa ndi kagayidwe kachakudya; zimagwiritsidwa ntchito ngati zowonjezera pazakudya ndi mankhwala, sizingagayidwenso m'zakudya ndipo sizipereka ma calories.
4. Njira yosungunula ya Hydroxypropyl methylcellulose (HPMC):
Zinthu za hydroxypropyl methylcellulose (HPMC) zikawonjezedwa mwachindunji m'madzi, zimaundana kenako zimasungunuka, koma kusungunuka kumeneku kumakhala pang'onopang'ono komanso kovuta. Pali njira zitatu zosungunula zomwe zaperekedwa pansipa, ndipo ogwiritsa ntchito amatha kusankha njira yosavuta kwambiri malinga ndi momwe amagwiritsira ntchito:
1. Njira ya madzi otentha: Popeza hydroxypropyl methylcellulose (HPMC) siisungunuka m'madzi otentha, gawo loyamba la hydroxypropyl methylcellulose (HPMC) likhoza kufalikira mofanana m'madzi otentha, kenako likaziziritsidwa, njira yachizolowezi imafotokozedwa motere:
1). Ikani madzi otentha okwanira mu chidebecho ndikutenthetsa mpaka pafupifupi 70°C. Pang'onopang'ono onjezerani hydroxypropyl methylcellulose (HPMC) mukasakaniza pang'onopang'ono, hydroxypropyl methylcellulose (HPMC) imayamba kuyandama pamwamba pa madzi, kenako pang'onopang'ono imapanga slurry, kuziziritsa slurry mukasakaniza.
2). Tenthetsani 1/3 kapena 2/3 (kuchuluka kofunikira) kwa madzi mu chidebecho ndikutenthetsa mpaka 70°C. Malinga ndi njira ya 1), falitsani hydroxypropyl methylcellulose (HPMC) kuti mukonze slurry ya madzi otentha. Kenako onjezerani madzi ozizira otsala kapena madzi oundana mu chidebecho, kenako onjezerani slurry ya madzi otentha ya hydroxypropyl methylcellulose (HPMC) yomwe yatchulidwa pamwambapa ku madzi ozizira, ndikusakaniza, kenako muziziziritse chisakanizocho.
3). Onjezani 1/3 kapena 2/3 ya madzi ofunikira mu chidebecho ndikutenthetsa mpaka 70°C. Malinga ndi njira ya 1), falitsani hydroxypropyl methylcellulose (HPMC) kuti mukonze slurry ya madzi otentha; Madzi ozizira kapena ayezi otsalawo amawonjezeredwa ku slurry ya madzi otentha ndipo chisakanizocho chimaziziritsidwa mukasakaniza.
2. Njira yosakanizira ufa: tinthu ta ufa wa hydroxypropyl methylcellulose (HPMC) ndi zosakaniza zina zofanana kapena zambiri za ufa zimasakanizidwa mokwanira posakaniza mouma, kenako zimasungunuka m'madzi, kenako hydroxypropyl methylcellulose Base cellulose (HPMC) imatha kusungunuka popanda kusonkhana. 3. Njira yonyowetsa organic solvent: pre-disperse kapena wet hydroxypropyl methylcellulose (HPMC) yokhala ndi organic solvents monga ethanol, ethylene glycol kapena mafuta, kenako imasungunuka m'madzi. Pakadali pano, hydroxypropyl methylcellulose (HPMC) imathanso kusungunuka bwino.
5. Ntchito zazikulu za hydroxypropyl methylcellulose (HPMC):
Hydroxypropyl methylcellulose (HPMC) ingagwiritsidwe ntchito ngati chokhuthala, chosungunula, chosakaniza ndi chopangira filimu. Zogulitsa zake zapamwamba kwambiri zitha kugwiritsidwa ntchito mu mankhwala a tsiku ndi tsiku, zamagetsi, ma resini opangidwa, zomangamanga ndi zokutira.
1. Kupoletsa kwa suspension:
Pakupanga ma resini opangidwa monga polyvinyl chloride (PVC), polyvinylidene chloride ndi ma copolymer ena, suspension polymerization imagwiritsidwa ntchito kwambiri ndipo ndiyofunikira kuti ikhazikitse kuyimitsidwa kwa ma monomers a hydrophobic m'madzi. Monga polima wosungunuka m'madzi, zinthu za hydroxypropyl methylcellulose (HPMC) zimakhala ndi ntchito yabwino kwambiri pamwamba ndipo zimagwira ntchito ngati choteteza cha colloidal, chomwe chingalepheretse bwino kusonkhana kwa tinthu ta polymer. Kuphatikiza apo, ngakhale hydroxypropylmethylcellulose (HPMC) ndi polima wosungunuka m'madzi, imasungunukanso pang'ono mu ma monomers a hydrophobic ndipo imawonjezera porosity ya ma monomers omwe tinthu ta polymeric timapangidwa, kotero kuti imatha Kupatsa ma polima mphamvu yabwino kwambiri yochotsa ma monomers otsala ndikuwonjezera kuyamwa kwa ma plasticizer.
2. Popanga zipangizo zomangira, hydroxypropyl methylcellulose (HPMC) ingagwiritsidwe ntchito pa:
1). Chogwirizira ndi cholumikizira cha tepi yomatira yopangidwa ndi gypsum;
2). Kumangirira njerwa, matailosi ndi maziko pogwiritsa ntchito simenti;
3). Stucco yopangidwa ndi plasterboard;
4). Pulasitiki yopangidwa ndi simenti;
5). Mu njira yochotsera utoto ndi utoto.
Nthawi yotumizira: Meyi-24-2023