1. Kodi hydroxypropyl methylcellulose ndi chiyani?
Hydroxypropyl methylcellulose (HPMC)ndi ether yopanda poizoni komanso yopanda vuto yomwe siionic cellulose ether, yomwe imagwiritsidwa ntchito kwambiri pomanga, chakudya, mankhwala, zodzoladzola ndi zina. Lili ndi ntchito za thickening, kusunga madzi, kupanga mafilimu, kugwirizanitsa, kudzoza ndi kuyimitsidwa, ndipo zimatha kusungunuka m'madzi kuti apange njira yowonekera kapena yowoneka bwino.
2. Ntchito wamba ndi ntchito HPMC
Ntchito yomanga
HPMC amagwiritsidwa ntchito pomanga zinthu monga matope simenti, putty ufa, matailosi zomatira, etc.:
Ntchito: Kupititsa patsogolo ntchito yomanga, kupititsa patsogolo kusungirako madzi, kuwonjezera nthawi yotsegula, ndi kukonza mgwirizano.
Njira yogwiritsira ntchito:
Onjezani mwachindunji ku matope osakaniza owuma, ndalama zovomerezeka ndi 0.1% ~ 0.5% ya unyinji wa simenti kapena gawo lapansi;
Pambuyo oyambitsa kwathunthu, kuwonjezera madzi ndi kusonkhezera mu slurry.
Makampani opanga zakudya
HPMC angagwiritsidwe ntchito monga thickener, stabilizer ndi emulsifier, ndipo ambiri amapezeka zakudya monga ayisikilimu, odzola, mkate, etc.:
Ntchito: Sinthani kukoma, khazikitsani dongosolo, ndikuletsa kusanja.
Kagwiritsidwe:
Sungunulani m'madzi ozizira, mlingo woyenera umasinthidwa pakati pa 0.2% ndi 2% malinga ndi mtundu wa chakudya;
Kutenthetsa kapena makina oyambitsa akhoza imathandizira kuvunda.
Makampani opanga mankhwala
HPMC imagwiritsidwa ntchito nthawi zambiri pakupaka piritsi lamankhwala, matrix omasulidwa okhazikika kapena chipolopolo cha kapisozi:
Ntchito: kupanga filimu, kuchedwa kutulutsidwa kwa mankhwala, ndi kuteteza zochita za mankhwala.
Kagwiritsidwe:
Konzani yankho ndi ndende ya 1% mpaka 5%;
Utsi wogawana pamwamba pa piritsi kupanga woonda filimu.
Zodzoladzola
Mtengo wa HPMCamagwiritsidwa ntchito ngati thickener, emulsion stabilizer kapena filimu kupanga wothandizira, ambiri ntchito masks kumaso, lotions, etc.:
Ntchito: Sinthani kapangidwe kake ndikuwonjezera kumverera kwa chinthucho.
Kagwiritsidwe:
Onjezani ku matrix odzikongoletsera molingana ndi kusonkhezera mofanana;
Mlingo nthawi zambiri umakhala 0.1% mpaka 1%, wosinthidwa malinga ndi zofunikira zamalonda.
3. HPMC kuvunda njira
Kusungunuka kwa HPMC kumakhudzidwa kwambiri ndi kutentha kwa madzi:
Ndizosavuta kusungunuka m'madzi ozizira ndipo zimatha kupanga njira yofanana;
Izo sizisungunuka m'madzi otentha, koma zimatha kumwazikana ndikupanga colloid pambuyo pozizira.
Masitepe apadera otha:
Kuwaza HPMC pang'onopang'ono m'madzi, pewani kuthira mwachindunji kuti mupewe kuyika;
Gwiritsani ntchito oyambitsa kusakaniza mofanana;
Sinthani ndende yankho ngati pakufunika.
4. Njira zodzitetezera pogwiritsa ntchito HPMC
Kuwongolera Mlingo: M'malo osiyanasiyana ogwiritsira ntchito, mlingowo umakhudza mwachindunji magwiridwe antchito ndipo umayenera kuyesedwa malinga ndi zosowa.
Kusungirako zinthu: Iyenera kusungidwa pamalo ozizira, owuma, olowera mpweya wabwino kupewa chinyezi ndi kutentha kwambiri.
Chitetezo cha chilengedwe: HPMC ndi yowola ndipo siiwononga chilengedwe, komabe iyenera kugwiritsidwa ntchito moyenera kuti ipewe zinyalala.
Mayeso ofananira: Mukawonjezeredwa kuzinthu zovuta (monga zodzoladzola kapena mankhwala), kuyanjana ndi zosakaniza zina kuyenera kuyesedwa.
5. Ubwino wa HPMC
Non-poizoni, wochezeka chilengedwe, mkulu chitetezo;
Zosiyanasiyana, zosinthika kuzinthu zosiyanasiyana zofunsira;
Kukhazikika kwabwino, kumatha kusunga magwiridwe antchito kwa nthawi yayitali.
6. Mavuto odziwika ndi mayankho
Vuto la Agglomeration: Samalani zowonjezera zobalalika mukamagwiritsa ntchito ndikugwedezani nthawi yomweyo.
Nthawi yayitali yosungunuka: Kukonzekera kwamadzi otentha kapena kuyambitsa makina kungagwiritsidwe ntchito kufulumizitsa kusungunuka.
Kuwonongeka kwa magwiridwe antchito: Samalani ndi malo osungiramo kuti mupewe chinyezi ndi kutentha.
Pogwiritsa ntchito HPMC mwasayansi komanso mwanzeru, mawonekedwe ake amitundu yambiri amatha kugwiritsidwa ntchito mokwanira kuti apereke mayankho apamwamba kwambiri pamafakitale osiyanasiyana.
Nthawi yotumiza: Dec-10-2024